CN101568152B - Control channel design method - Google Patents
Control channel design method Download PDFInfo
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- CN101568152B CN101568152B CN2008100946287A CN200810094628A CN101568152B CN 101568152 B CN101568152 B CN 101568152B CN 2008100946287 A CN2008100946287 A CN 2008100946287A CN 200810094628 A CN200810094628 A CN 200810094628A CN 101568152 B CN101568152 B CN 101568152B
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Abstract
The invention discloses a control channel design method which comprises the following steps: setting one or a plurality of scheduling-based control instructions (SCI) in a superframe according to the scheduling of a base station, wherein each SCI controls a subframe or a subframe region which comprises a plurality of subframes in the current scheduling process of the base station, and each SCI carries control information which is used for controlling and indicating mapping signs; and setting one or a plurality of mapping signs in the subframe or the subframe region controlled by each SCI according to the control information in each SCI, wherein the mapping signs are used for indicating the resource allocation condition of one or a plurality of subframes. The invention realizes a new subframe-based control channel design method by adopting the technical scheme, thus the cost of a system for managing messages is reduced, and the performance of the system is improved.
Description
Technical field
The present invention relates to wireless communication field, particularly, relate to the control channel method for designing in the wireless communication system that adopts the base station to realize wireless resource scheduling.
Background technology
At OFDMA (Orthogonal Frequency Division Multiple Access; OFDM) in the wireless communication system; The base station is to show the equipment that the terminal provides service; The base station communicates through Uplink/Downlink and terminal, the descending direction that is meant the base station to the terminal, the up direction that is meant terminal to base station.A plurality of terminals can be sent data through up link to the base station simultaneously, also can receive data simultaneously from the base station through down link.
In addition, in the OFDMA wireless communication system, the transmission data resource is formed two-dimentional time-frequency domain resources piece by time-domain symbol and subcarrier in frequency domain respectively.Realize the unified planning scheduling to time-frequency domain resources through definition frame, frame structure successively can be divided into superframe, frame, subframe, the several levels of symbol.
The scheduling of all resources of OFDMA system distributes to be undertaken by the base station usually, for example, and the employable resource situation of institute etc. when uplink is carried out at resource allocation conditions when downlink transfer is carried out in the base station and terminal.Control channel comprises the control and management message that the terminal is realized MAC (Media AccessControl, medium access control) function, for example inserts, switches, economize on electricity etc.; On the other hand, control channel has also comprised and need be MAP (mapping) message of terminal indexed resource distribution condition.
In traditional wireless communication system; The base station is a dispatching cycle with a radio frames generally when the Radio Resource that scheduling is eated dishes without rice or wine; All resources in the radio frames can be dispatched in the base station in dispatching cycle, and the base station is that all terminals that the base station covers provide service through the resource in the scheduling radio frames.But in the wireless communication system of a new generation; As with LTE (Long TermEvolution; Long Term Evolution), UMB (Ultra Mobile Broadband, Ultra-Mobile Broadband) and IEEE 802.16m etc. are in the GSM of representative, in order to reduce the data transmission delay of system; Usually a radio frames is subdivided into a plurality of subframes or subframe zone (by a plurality of subframe cascades) again, thereby has increased the number of times of the base station scheduling in the radio frames.Thereby the design of control channel in the legacy wireless communication system can't have been satisfied the dispatching requirement in the new generation of wireless communication system, as to the requirement of data transmission delay with to the requirement of control expense.Therefore,, demonstrate fully the technical advantage of new generation of wireless communication system, need to propose a kind of new control channel design in order to adapt to the needs of new generation of wireless communication system.
Summary of the invention
Consider that there is the problem that expense is big, systematic function is low in the present control channel design that exists in the correlation technique and proposes the present invention, for this reason, the present invention aims to provide a kind of control channel method for designing, in order to address the above problem.
According to the present invention, a kind of control channel method for designing is provided.
Control channel method for designing according to the embodiment of the invention comprises following processing: according to the scheduling of base station one or more controls indications based on scheduling being set in superframe is SCI; Wherein, Each SCI controls a sub-frame of this scheduling of base station or the subframe zone of being made up of a plurality of subframes; And carry control information among the SCI, control information is used for control and indication map symbol; According to the control information among the SCI, in the subframe of SCI control or subframe zone, one or more mapping symbols are set, mapping symbols is used to indicate the resource allocation conditions of one or more subframes.
Wherein, the fixed-site of above-mentioned SCI in all superframes defined by agreement in advance.
Under above-mentioned situation, said method further comprises: the position of SCI is confirmed according to predefined agreement in the terminal, and judges the position of mapping symbols according to the control information among the SCI.
Perhaps, the fixed-site of above-mentioned SCI in superframe, and by superframe head or the indication of public broadcasting message.
In this case, said method further comprises following processing: the position of SCI is confirmed according to superframe head or public broadcasting message in the terminal, and judges the position of mapping symbols according to the control information among the SCI.Preferably; Said method can further include: can't confirm according to superframe head or public broadcasting message at the terminal under the situation of position of SCI; The terminal is searched in superframe, searches SCI, and judges the position of mapping symbols according to the control information among the SCI that searches.
Perhaps, the position of SCI in superframe is fixing, wherein, according to the dispatching requirement of base station the position is set.
Under above-mentioned situation, said method further comprises: the terminal is searched in superframe, searches SCI, and judges the position of mapping symbols according to the control information among the SCI that searches.
Perhaps, the position of SCI in superframe is fixing, wherein, according to the dispatching requirement of base station the position is set, and, carrying the indication information of next SCI among the current SCI, indication information comprises the positional information of next SCI at least.
Under above-mentioned situation, said method further comprises: the terminal is searched in superframe, searches first SCI, and confirms the position of follow-up SCI according to the indication information among first SCI, and judges the position of mapping symbols according to the control information among the SCI.
Perhaps, in superframe, the fixed-site of first SCI, and the SCI in superframe is more than under one the situation, and the position of other SCI except that first SCI is fixing, wherein, the position of other SCI is set according to the dispatching requirement of base station.Perhaps, in each frame of superframe, the fixed-site of first SCI, and the SCI in frame is more than under one the situation, and the position of other SCI except that first SCI is fixing, dynamically arranges the position of other SCI in superframe by the base station.
Under above-mentioned situation, said method further comprises: the position of first SCI is confirmed according to superframe head or public broadcasting message or predefined agreement in the terminal, and in superframe, searches for, and searches other SCI.
Perhaps, in superframe, the fixed-site of first SCI; And the SCI in superframe is more than under one the situation, and the position of other SCI outside first SCI is unfixing, and; Carry the indication information of next SCI among the current SCI, indication information comprises the positional information of next SCI at least.Perhaps; In each frame of superframe, the fixed-site of first SCI, and the SCI in frame is more than under one the situation; The position of other SCI except that first SCI is unfixing; And, carrying the indication information of next SCI among the current SCI, indication information comprises the positional information of next SCI at least.
Preferably; Under above-mentioned situation; The position of first SCI is by superframe head or the indication of public broadcasting message; Perhaps defined in advance by agreement, and said method further comprises following processing: the position of first SCI is confirmed according to superframe head or public broadcasting message or predefined agreement in the terminal, and confirms the position of follow-up SCI according to the indication information that carries among first SCI.
Preferably, said method further comprises: under the situation of the indication information that in can't obtaining current SCI, carries, the terminal is searched in superframe, searches next SCI.
Through the present invention, through SCI is set, and mapping symbols is set according to the control information among the SCI in frame, realized a kind of new control channel design based on subframe, reduced the expense of system management messages, improved systematic function.
Other features and advantages of the present invention will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used to explain the present invention with embodiments of the invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the sketch map according to the generic frame structure of correlation technique;
Fig. 2 is the flow chart according to the control channel method for designing of the embodiment of the invention;
Fig. 3 is the sketch map according to the control channel method for designing of the embodiment of the invention;
Fig. 4 is the sketch map according to the control channel method for designing of the embodiment of the invention one;
Fig. 5 is the sketch map according to the control channel method for designing of the embodiment of the invention two;
Fig. 6 is the sketch map according to the control channel method for designing of the embodiment of the invention three;
Fig. 7 is the sketch map according to the control channel method for designing of the embodiment of the invention four.
Embodiment
In the wireless communication system of a new generation; For example; With OFDM (OrthogonalFrequency Division Multiplexing; OFDM) and OFDMA (Orthogonal Frequency Division Multiple Address, orthogonal frequency division multiplexing multiple access) technology be in the wireless communication system on basis, the resource area that generally Radio Resource is divided into different brackets is dispatched; For example, the structure that Radio Resource is divided into the different brackets of superframe, frame, subframe and symbol is dispatched.Be illustrated in figure 1 as the frame structure pattern of WiMAX 16m.
Particularly, can at first Radio Resource be divided into continuous superframe of time, super frame period is 20 milliseconds.Each superframe is made up of the frame of four 5 millisecond periods, and the continuous a plurality of subframes of eight sub-frame are arranged in the frame, and each subframe is made up of 6 OFDM symbols.Radio Resource is divided into several less relatively zones (like subframe) to be dispatched; The essence of this type division is to increase the dispatcher meeting; Service quality (Quality of Service abbreviates QoS as) to satisfy the new generation of wireless communication system especially satisfies the requirement of system transmissions time delay.
Therefore, based on the frame structure of new generation of wireless communication system, like WiMAX 16m standard, the embodiment of the invention provides a kind of control channel method for designing based on subframe, to satisfy the scheduling requirement of communication system of new generation, the for example requirement of time delay.
As shown in Figure 1, Radio Resource is divided into 20 milliseconds and is the superframe in cycle.Each superframe has a superframe head, the inside place system synchronizing channel, structures such as system broadcast channel.And each superframe is made up of four 5 milliseconds of frames, and each frame then is made up of 8 sub-frame, and subframe is basic dispatcher-controlled territory.
Based on foregoing; In control channel method for designing according to the embodiment of the invention; Scheduling according to the base station is provided with control indicating device (the Scheduling-based Control Indicator based on scheduling in superframe; Abbreviate SCI as), wherein, a sub-frame of SCI control this scheduling of base station or the subframe zone of forming by a plurality of subframes.Wherein, In a frame; Since in variation, frame or the subframe of the difference of the traffic performance in when scheduling, channel condition the variation of the characteristic of Radio Resource or description scheme and base station for satisfy as disturb suppress, energy-conservation, HARQ, relaying (Relay) and multicast and broadcast service (MulticastBroadcast Service; Abbreviate MBS as) wait the scheduling needs of some specific function, the base station can determine to exist one or more SCI.
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
Based on foregoing, the embodiment of the invention has provided a kind of control channel method for designing, and Fig. 2 shows the flow chart according to the control channel method for designing of the embodiment of the invention.As shown in Figure 2, comprise following processing:
Step S202 is provided with one or more SCI according to the scheduling of base station, wherein in superframe; Each SCI controls a sub-frame of this scheduling of base station or the subframe zone of being made up of a plurality of subframes; And, carrying control information among the SCI, this control information is used for control and indication map symbol;
Step S204 according to the control information among the SCI, is provided with one or more mapping symbols (MAP) in the subframe of SCI control or subframe zone, mapping symbols is used to indicate the resource allocation conditions of one or more subframes.Also can understand like this, that is, the basic function of SCI is control and indication map symbol.
For example; In Fig. 3, position, length and the modulation coding mode of the MAP of subframe 0 and subframe 1 all indicated by the SCI of subframe 0, similarly; Resource unification in the subframe zone of subframe 2 and subframe 3 formations is by the MAP scheduling of subframe 2, and subframe 5 is by the MAP scheduling of subframe 4.The MAP of subframe 2 and subframe 5 is indicated by the SCI on the subframe 2.
Through technique scheme, through SCI is set in superframe, and use this SCI to control and the indication map symbol, can reduce the system management expense, improve systematic function.
In addition, need to prove that in the above-described embodiments, the position of SCI can be fixed, also can not fix, to the position of SCI, the embodiment below further having provided.
Embodiment one: SCI fixed-site and predetermined this control of position channel design method of stipulating in the communication standard agreement
In this embodiment, in the Radio Resource that superframe comprises, SCI fixes residing position in all superframes, and in the communication standard agreement, is fixed up.As shown in Figure 4, under the tdd mode, in the frame/when downlink percent is 5: 3 (5 descending sub frames, 3 sub-frame of uplink), the fixed-site of SCI in descending sub frame lays respectively in the 0th subframe and the 2nd subframe.The position of subframe MAP in the dispatcher-controlled territory of SCI control is dynamic, and the position of MAP, length, modulation and coding mode and transmission mode are indicated by SCI.
During the SCI fixed-site, the table of comparisons of SCI position under the special scenes is found according to the respective protocol standard in the terminal, and this table of comparisons is planned in standard agreement, and is fixed in the information of terminal stores.Indication information according to the SCI of fixed position comprises can judge needs receive subframe MAP on which subframe, therefore need not monitor all subframes, thereby reduce the power consumption at terminal.
Simultaneously, the position of the subframe MAP in the dispatcher-controlled territory of SCI control is dynamic.As shown in Figure 4, in frame 0, the SCI in the subframe 0 is controlling the subframe MAP of subframe 0 and the subframe MAP of subframe 1, and their position, length and modulation and coding mode are by this SCI indication; In the frame 0, the SCI in the subframe 2 is controlling the subframe MAP of subframe 2 and the subframe MAP of subframe 4, and subframe 3 does not have subframe MAP, and subframe 3 constitutes sub-frame zone with subframe 2, and the allocation of radio resources of subframe 3 is through the MAP description of subframe 2.
Because the SCI fixed-site, the terminal can go according to the indication information that SCI comprises to judge needs receive subframe MAP on which subframe, need not monitor all subframes, thereby reduce the power consumption at terminal.Further with reference to Fig. 4; In frame 1; The terminal can be known according to the SCI in the subframe 0 and only in subframe 0, has subframe MAP; And do not have subframe MAP in the subframe 1 of this SCI control, so the scheduling situation of subframe 1 only need just can be confirmed according to the MAP of subframe 0 in the terminal, thereby farthest reduced power consumption.
Embodiment two: the SCI fixed-site, and the control channel of indicating through superframe head or other CCCHs designs
In this embodiment, in the Radio Resource that superframe comprises, SCI fixes residing position, and in the indication of superframe head or other CCCHs, is fixed up.For example, under the tdd mode, in the frame/when downlink percent is 5: 3 (5 descending sub frames, 3 sub-frame of uplink), SCI respectively in 4 frames the position of subframe confirm, and through the indication of superframe head.Fixed-site in the descending sub frame lays respectively in the 0th subframe and the 2nd subframe.The position of subframe MAP in the dispatcher-controlled territory of SCI control is dynamic, and the position of MAP, length, modulation and coding mode and transmission mode are indicated by SCI.
During the SCI fixed-site; The terminal is according to the indication of superframe head or other CCCHs; Find the position of SCI in this superframe; And the indication information that can comprise according to the SCI of fixed position judges needs receive subframe MAP on which subframe, need not monitor all subframes, thereby reduce the power consumption at terminal.
Simultaneously, the position of the subframe MAP in the dispatcher-controlled territory of SCI control is dynamic.As shown in Figure 5, in frame 0, the SCI in the subframe 0 is controlling the subframe MAP of subframe 0 and the subframe MAP of subframe 1, and their position, length and modulation and coding mode are by this SCI indication; In the frame 0, the SCI in the subframe 2 is controlling the subframe MAP of subframe 2 and the subframe MAP of subframe 4, and subframe 3 does not have subframe MAP, and subframe 3 constitutes sub-frame zone with subframe 2, and the allocation of radio resources of subframe 3 is through the MAP description of subframe 2.
Because the SCI fixed-site, the terminal can go according to the indication information that SCI comprises to judge needs receive subframe MAP on which subframe, need not monitor all subframes, thereby reduce the power consumption at terminal.As shown in Figure 5; In frame 1, the terminal can be known according to the SCI in the subframe 0 and only in subframe 0, has subframe MAP, and there is not subframe MAP in the subframe 1 of this SCI control; So the terminal only needs just can confirm the scheduling situation of subframe 1 according to the MAP of subframe 0, thereby has farthest reduced power consumption.
Embodiment three: the control channel method for designing of SCI position dynamic
In this embodiment, in the Radio Resource that frame comprises, SCI does not fix residing position, but dynamic,, need confirm its position according to the scheduling of base station that is.The position of subframe MAP in the dispatcher-controlled territory of SCI control is dynamic.The position of MAP, length and modulation and coding mode are indicated by SCI.
During the SCI position dynamic, each position that SCI possibly occur need be monitored in the terminal, and then judges whether to exist SCI, and confirms subframe MAP according to SCI.
In addition, during the SCI position dynamic, because the subframe MAP of its control also is dynamic, the base station can be in any subframe response scheduling demand, thereby can reduce the data transmission delay of system.For example, when base station resolves go out HARQ be fed back to NACK the time, SCI can be immediately placed in next subframe in the base station once dispatched with corresponding subframe MAP, thereby has realized that HARQ retransmits fast.Otherwise, HARQ be fed back to ACK the time, just need not retransmit and not dispatch HARQ.In addition, when other patterns made a mistake, the terminal can change this pattern automatically over to, thereby guaranteed that control messages continues the correct protectiveness pattern that receives.
Particularly, Fig. 6 shows the unfixed control channel design in SCI position among this embodiment.As shown in Figure 6, the SCI in the frame 0 is arranged in subframe 0 and subframe 2, and the SCI in the frame 1 is arranged in subframe 0 and subframe 3, and all there is SCI in each subframe in the frame 2.
The position of subframe MAP in the dispatcher-controlled territory of SCI control is dynamic.As shown in Figure 6, in frame 0, two sub-frame (subframe 0 and subframe 1) of the SCI control in the subframe 0 all have subframe MAP separately, and in the frame 1, in two sub-frame of the SCI control in the subframe 0, have only subframe 0 that MAP is arranged, and subframe 1 do not have subframe MAP.But the position of subframe MAP, length and modulation and coding mode all are by corresponding SCI indication.
During the SCI position dynamic, each position that SCI possibly occur need be monitored in the terminal, and then judges whether to exist SCI, and confirms subframe MAP according to SCI.As shown in Figure 6, in frame 0, the terminal can be known in subframe 1 according to the SCI in the subframe 0 can not exist another SCI, so the terminal can begin to search for new SCI in the 2nd sub-frame, and then judges the resource allocation conditions beyond the SCI control area.
The continuity explanation of embodiment two and embodiment three:
In the process of the method for carrying out embodiment two; When the terminal because channel, for example run into the Rayleigh deep fade, the information that the terminal can not right demodulation excess of export frame head; Also just can not obtain the positional information of SCI in the superframe head; And then can't confirm the position of SCI, further, the terminal also just can not obtain MAP information.Therefore thereby the reception that all the resource allocation message terminals in this superframe all can not be exact has influenced the performance of system.
Therefore; When the terminal under the receiving mode of the foregoing description two; In the time of can not correctly receiving the SCI positional information of superframe head, the terminal need change the receiving mode of embodiment three in this superframe, promptly; Need dynamically search for the SCI information in each sub-frame, thereby guarantee that the resource allocation message in this superframe correctly receives.When next superframe arrived, the terminal still continued to receive according to the pattern among the embodiment two.
Embodiment four: the SCI position is through the control channel method for designing of self chain type indication
In the present embodiment, in the Radio Resource that superframe comprises, SCI does not fix residing position; But dynamic, that is, need confirm its position according to the scheduling of base station; And carry the information of next SCI among the current SCI, comprise positional information that whether has next SCI, next SCI etc., promptly; The existence of next SCI whether with and the position specify by a last SCI, finally form the SCI structure of a chain type.That is, the position of the subframe MAP in the dispatcher-controlled territory of SCI control remains dynamically, and the position of MAP, length and modulation and coding mode are still indicated by SCI.If the terminal initial connecting system, then the terminal is at first carried out dynamically and in superframe, each subframe is searched for searching SCI.After finding SCI,, confirm the position of next SCI according to the information of current SCI indication.
The base station is when carrying out current scheduling; If judge in certain follow-up sub-frame, possibly have the scheduling needs, then can specify the subframe position of next SCI appearance through current SCI (for example, among the current SCI indication information being set); Form chain type SCI, increase the chance of scheduling.
In the control channel design of chain type SCI, can possibly there be scheduling in the base station in following subframe according to the current information prediction.For example; In the wireless communication system of supporting HARQ; Owing to there is the decoding time delay; Do not receive the feedback of HARQ in current scheduling moment base station, in the time of still can after certain sub-frame, receiving the feedback of HARQ certainly, the position of scheduling next time can be confirmed through this chain type SCI in the base station.
For example, as shown in Figure 7, the SCI in the frame 0 is arranged in subframe 0 and subframe 2, and the SCI in the frame 1 is arranged in subframe 0 and subframe 3, and all there is SCI in each subframe in the frame 2, and the position of the SCI in three frames is different.With frame 0 is example, and whether the SCI of subframe 2 occurs and in which subframe occur is by SCI (being the SCI in the subframe 0) appointment of front; The SCI of the subframe 3 in the frame 1 is by the SCI appointment of the subframe in the frame 10; Similarly, in frame 2, the SCI of subframe 1 is subframe 0 appointment, and the like.
The position of subframe MAP in the dispatcher-controlled territory of SCI control remains dynamic.As shown in Figure 7, in frame 0, two sub-frame (subframe 0 and subframe 1) of the SCI control in the subframe 0 all have subframe MAP separately; In three sub-frame ( subframe 2,3 and 4) of the SCI control in the subframe 2, the resource allocation of subframe 2 and subframe 3 is described by the MAP of subframe 2, and subframe 4 has the MAP of oneself.In frame 1, three sub-frame ( subframe 0,1 and 2) of SCI in the subframe 0 control, subframe 0 and 1 resource allocation are by the MAP description of subframe 0, and subframe 2 has the MAP of oneself; In two sub-frame (subframe 3 and 4) of SCI in the subframe 3 control, subframe 3 and 4 resource allocation are by the MAP description of subframe 2.In frame 2, each subframe all has the SCI and corresponding subframe MAP of oneself.The subframe of all SCI controls or position, length and the modulation of the subframe MAP in the subframe zone are still indicated by its corresponding SCI with coding mode.
The control channel method for designing that provides among this embodiment can be called the control channel design of chain type SCI.As shown in Figure 7, in frame 0, the feedback of HARQ had been received in the base station before subframe 0; But owing to there is the decoding time delay; In current scheduling base station and do not know whether HARQ needs to retransmit constantly, but can affirm, can decipher out the feedback information of HARQ in subframe 2.At this moment, the base station can once be dispatched in subframe 2 by the indication of the SCI in the subframe 0 through this chain type SCI, so that be that possible HARQ retransmits distributing radio resource.
The continuity explanation of embodiment three and embodiment four:
During carrying out the method for embodiment four, when the terminal because channel for example runs into the Rayleigh deep fade; The terminal can not correct Solution accesses the information of some SCI, in case SCI information can not be correctly read at the terminal, not only the resource allocation information in this dispatcher-controlled territory takes defeat; Even more serious is; Because SCI carries the positional information of next SCI, thereby cause all SCI terminals, back all can not correctly receive, cause this terminal resource to distribute reception to fall flat.
, can not receive or the next SCI positional information of demodulation SCI the inside indication if the terminal detects, then the terminal changes the receiving mode of embodiment three in this superframe for this reason.That is to say that the terminal is in the time can not receiving correctly that SCI indicates next SCI positional information, the SCI information in each sub-frame is just dynamically searched at the terminal, thereby guarantees that the resource allocation message in this superframe correctly receives.
When the terminal received the link information of SCI again, the terminal still continued to receive according to the pattern of self chain type indication among the embodiment four.
Embodiment five: the SCI fixed-site with dynamically arrange the control channel method for designing that combines
Situation one: the fixed-site of first SCI in the superframe, other SCI positions are unfixing
In this case, according to service in base station scheduling needs, in superframe, possibly there is one or more SCI.Wherein, the position of first SCI in the superframe is fixed, and is arranged in first subframe of first frame of this superframe, and this can be fixed up in the communication standard agreement.That is to say on first subframe of first frame, to have a SCI to exist.
If the base station because scheduling needs, has in a superframe when existing more than one SCI, the base station is according to the scheduling needs so, and the location assignment through the dynamical fashion SCI that these are extra is in other non-first subframes of this superframe.
The terminal according to the agreement of communication standard agreement, receives the SCI information in first frame of superframe in receiving course.Afterwards, other SCI information is searched at the terminal again.The terminal receives the information of these SCI, just can know corresponding resource allocation MAP information.
Situation two: the fixed-site of first SCI in the every frame in the superframe, other SCI positions in every frame outside first SCI are unfixing
In this case, possibly there is one or more SCI according to the service dispatching needs in the base station in every frame, and wherein, the position of first SCI is fixed, and is arranged in first subframe of this frame, and this can be fixed up in the communication standard agreement.That is to say on first subframe of each frame, to have a SCI to exist.
If need there be the SCI existence more than the base station because scheduling needs in a frame, then the base station is according to the scheduling needs, and the location assignment through the dynamical fashion SCI that these are extra is in other non-first subframes of this frame.
The terminal according to the agreement of communication standard agreement, receives the SCI information in first subframe of each frame in receiving course, in addition, the SCI information of other non-first subframes is also searched at the terminal.The terminal receives the information of these SCI, just can know corresponding resource allocation MAP information.
Embodiment six: SCI fixed-site and the control channel method for designing that combines through the indication of self chain type
Situation one: the fixed-site of first SCI in the superframe, other SCI positions are unfixing
In this case, according to service in base station scheduling needs, in superframe, possibly there is one or more SCI.Wherein, the position of first SCI in the superframe is fixed, and is arranged in first subframe of first frame of this superframe, and this can be fixed up in the communication standard agreement.That is to say on first subframe of first frame, to have a SCI to exist.
If the base station is because scheduling need; In a superframe, have when existing more than one SCI; The base station is according to the scheduling needs so, through the position of self these extra SCI of chain type indicating mode indication, for example; Information in the next SCI position of first SCI the inside indication, second SCI indicates the information of the 3rd SCI position then.So analogize.
The terminal according to the agreement of communication standard agreement, receives the SCI information in first frame of superframe in receiving course.Afterwards, the terminal obtains the positional information of next SCI according to the information of the next SCI position of indicating in first SCI the inside.So analogize.The terminal receives the information of these SCI, just can know corresponding resource allocation MAP information.
Situation two: the fixed-site of first SCI in the every frame in the superframe, other SCI positions in every frame outside first SCI are unfixing
In this situation, possibly there is one or more SCI according to the service dispatching needs in the base station in every frame, and wherein, the position of first SCI is fixed, and is arranged in first subframe of this frame, and this can be fixed up in the communication standard agreement.That is to say on first subframe of each frame, to have a SCI to exist.
If the base station is because scheduling need; Need in the middle of a frame, there be SCI to exist more than one; Then the base station is according to the scheduling needs, through the position of self these extra SCI of chain type indicating mode indication, for example; Information in the next SCI position of first SCI the inside indication, second SCI indicates the information of the 3rd SCI position then.So analogize.
The terminal according to the agreement of communication standard agreement, receives the SCI information in first subframe of each frame in receiving course, in addition, the terminal obtains the positional information of next SCI also according to the information in the next SCI position of first SCI the inside indication.So analogize.The terminal receives the information of these SCI, just can know corresponding resource allocation MAP information.
Need to prove that in this embodiment, the terminal according to the information of the next SCI position of indicating in first SCI the inside, obtains the positional information of next SCI in receiving course.So analogize.In addition, can not receive in order to prevent in frame certain SCI indication, and the situation of " chain rupture " takes place, when in a single day the terminal can not receive the indication of a SCI, search for all subframes remaining in this frame automatically, whether inspection exists SCI.If search, then receive corresponding SCI information, the terminal receives the information of these SCI, just can know corresponding resource allocation MAP information.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (17)
1. a control channel method for designing is characterized in that, said method comprises:
According to the scheduling of base station one or more controls indications based on scheduling being set in superframe is SCI; Wherein, Each SCI controls a sub-frame of this scheduling of said base station or the subframe zone of being made up of a plurality of subframes; And carry control information among the said SCI, said control information is used for control and indication map symbol;
According to the said control information among the said SCI, in the said subframe of said SCI control or said subframe zone, one or more mapping symbols are set, said mapping symbols is used to indicate the resource allocation conditions of one or more subframes.
2. method according to claim 1 is characterized in that, the position of said SCI in all superframes is all fixing, is defined in advance by agreement.
3. method according to claim 2 is characterized in that, further comprises:
The position of said SCI is confirmed according to predefined said agreement in the terminal, and judges the position of said mapping symbols according to the control information among the said SCI.
4. method according to claim 1 is characterized in that, the fixed-site of said SCI in superframe, and by superframe head or the indication of public broadcasting message.
5. method according to claim 4 is characterized in that, further comprises:
The position of said SCI is confirmed according to said superframe head or public broadcasting message in the terminal, and judges the position of said mapping symbols according to the control information among the said SCI.
6. method according to claim 5 is characterized in that, further comprises:
Can't confirm according to said superframe head or public broadcasting message at said terminal under the situation of position of said SCI; Said terminal is searched in said superframe; Search said SCI, and judge the position of said mapping symbols according to the control information among the said SCI that searches.
7. method according to claim 1 is characterized in that, the position of said SCI in superframe is fixing, wherein, according to the dispatching requirement of said base station said position is set.
8. method according to claim 7 is characterized in that, further comprises:
The terminal is searched in said superframe, searches said SCI, and judges the position of said mapping symbols according to the control information among the said SCI that searches.
9. method according to claim 1; It is characterized in that the position of said SCI in superframe is unfixing, wherein; Dispatching requirement according to said base station is provided with said position; And, carrying the indication information of next SCI among the current SCI, said indication information comprises the positional information of said next SCI at least.
10. method according to claim 9 is characterized in that, further comprises:
The terminal is searched in said superframe, searches first SCI, and confirms the position of follow-up SCI according to the indication information among said first SCI, and judges the position of said mapping symbols according to the control information among the SCI.
11. method according to claim 1; It is characterized in that, in said superframe, the fixed-site of first SCI; And the SCI in said superframe is more than under one the situation; The position of other SCI except that said first SCI is unfixing, wherein, the position of said other SCI is set according to the dispatching requirement of said base station.
12. method according to claim 1; It is characterized in that; In each frame of said superframe, the fixed-site of first SCI, and the SCI in frame is more than under one the situation; The position of other SCI except that said first SCI is unfixing, dynamically arranges the position of said other SCI in superframe by said base station.
13. according to claim 11 or 12 described methods, it is characterized in that, further comprise:
The position of said first SCI is confirmed according to superframe head or public broadcasting message or predefined agreement in the terminal, and in said superframe, searches for, and searches said other SCI.
14. method according to claim 1 is characterized in that, in said superframe; The fixed-site of first SCI; And the SCI in said superframe is more than under one the situation, and the position of other SCI outside said first SCI is unfixing, and; Carry the indication information of next SCI among the current SCI, said indication information comprises the positional information of said next SCI at least.
15. method according to claim 1 is characterized in that, in each frame of said superframe; The fixed-site of first SCI; And the SCI in frame is more than under one the situation, and the position of other SCI except that said first SCI is unfixing, and; Carry the indication information of next SCI among the current SCI, said indication information comprises the positional information of said next SCI at least.
16., it is characterized in that the position of said first SCI is perhaps defined by agreement by superframe head or the indication of public broadcasting message in advance according to claim 14 or 15 described methods, said method further comprises:
The position of said first SCI is confirmed according to said superframe head or public broadcasting message or predefined said agreement in the terminal, and confirms the position of follow-up SCI according to the said indication information that carries among said first SCI.
17. method according to claim 16 is characterized in that, further comprises:
Under the situation of the said indication information that in can't obtaining current SCI, carries, said terminal is searched in said superframe, searches next SCI.
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| US9515795B2 (en) * | 2011-03-25 | 2016-12-06 | Nufront Mobile Communications Technology Co., Ltd. | Wireless communication system, network device, and terminal device |
| EP2782280A1 (en) * | 2013-03-20 | 2014-09-24 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Two-stage signaling for transmission of a datastream |
| WO2016123802A1 (en) | 2015-02-06 | 2016-08-11 | Panasonic Intellectual Property Corporation Of America | Wireless communication method, enodb and user equipment |
| WO2020237425A1 (en) * | 2019-05-24 | 2020-12-03 | Qualcomm Incorporated | Scheduling for improved throughput in enhanced machine-type communication |
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| US6532365B1 (en) * | 1993-11-01 | 2003-03-11 | Intel Corporation | PCS pocket phone/microcell communication over-air protocol |
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