CN100568795C - The control method of wireless link synchronization/step-out in the wireless communication system - Google Patents
The control method of wireless link synchronization/step-out in the wireless communication system Download PDFInfo
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- CN100568795C CN100568795C CNB2004100888851A CN200410088885A CN100568795C CN 100568795 C CN100568795 C CN 100568795C CN B2004100888851 A CNB2004100888851 A CN B2004100888851A CN 200410088885 A CN200410088885 A CN 200410088885A CN 100568795 C CN100568795 C CN 100568795C
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Abstract
The invention discloses the control method of wireless link synchronization/step-out in a kind of wireless communication system, in the method, the physical layer of user terminal and base station obtains parameters such as the synchronous count threshold of local terminal and step-out count threshold in advance.After Radio Link is set up in user terminal and base station, step-out numeration and numeration synchronously are placed on physical layer and finish, have only after step-out/synchronometer numerical value reaches the same/step-out count threshold that obtains in advance, physical layer just can report signaling to the high level of local terminal, reduce the mutual flow of physical layer and high-level signaling thus, advanced the effect that this improves high-rise the processing synchronously/step-out.
Description
Technical field
The present invention relates to the communications field, relate in particular to the control method of wireless link synchronization/step-out in a kind of wireless communication system.
Background technology
Present 3G system is made up of three parts usually: CN (core net), UTRAN (UMTS Terrestrial radio access network) and UE (user terminal).Interface between CN and the UTRAN is called the Iu interface, and the interface between UTRAN and the UE is referred to as the Uu interface.Wherein, UTRAN is made up of one or more RNSs (RNS).Each RNS is made up of a radio network controller (RNC) and one or more base station (Node B).RNC can link to each other with another RNC by the Iur interface, links to each other by Iub interface between RNC and the Node B.
See also Fig. 1, its protocol architecture for being adopted in the 3G system.It mainly is divided into three layers, lowermost layer be physical layer (PHY) L1, being positioned on the physical layer is data link layer L2, being positioned on the data link layer is network layer L3.See that vertically protocol architecture is divided into the control plane and a user plane that is used to send data message of be used to transmit control signal (signaling).Data link layer is divided into several sublayers, and from control plane, it comprises media access control layer (MAC) and wireless chain control layer (RLC), and network layer mainly comprises radio resource control layer (RRC).The network layer of base station mainly refers to NBAP (node application protocol), in order to handle signaling that RNC transmits by Iub interface and the signaling of this base station is sent to RNC by Iub interface.
When a user terminal is connected by network side foundation conversation or other data with another user terminal or service content provider, wireless communication system needs all need carry out the control of wireless link synchronization/step-out in each terminal and network side, go up the quality of data to detect RL (communication link), and then guarantee under the situation of the quality of data severe exacerbation of Radio Link, upgrade fast the sub-district, go offline and then improve communication quality preventing.
See also Fig. 2, it is the control flow chart of the wireless link synchronization/step-out of wireless communication system in the prior art.It comprises:
S110: after synchronous communication was set up in user terminal and base station, user terminal and base station physical layer separately reported the wireless chaining status of this sense cycle to the high level of local terminal according to predefined sense cycle.What the base station was detected is the wireless chaining status of up link, and what user terminal detected is the wireless chaining status of down link.Described sense cycle is cycle time that physical layer detects wireless link synchronization/step-out.Usually the sense cycle that is provided with at the beginning of link establishment is 40ms, and the sense cycle that is provided with usually At All Other Times is 160ms.Wireless chaining status comprises synchronously and the step-out two states.When the check results that detects at least one special burst piece (special burst) or detect the CRC (cyclic redundancy check (CRC)) of at least one transmission block in sense cycle in transmission channel is correct, then this physical layer detects one subsynchronous on described Radio Link, otherwise this physical layer detects step-out one time on described Radio Link.High level typically refers to network layer, as NBAP or RRC;
S120: the high level separately of base station and user terminal whenever receives described wireless chaining status, judges whether described wireless chaining status is desynchronizing state, if then carry out step S130, otherwise enter step S140;
S130: high-rise elder generation adds 1 with the step-out count value in the step-out counter, and with the synchronometer numerical value zero clearing in the coincidence counter, judge then whether described step-out count value reaches predefined step-out count threshold, if, then start timer, and carry out step S150, otherwise carry out step S120 again;
S140: high-rise elder generation adds 1 with the synchronometer numerical value in the coincidence counter, and with the step-out count value zero clearing in the step-out counter;
S150: high-rise judgement is in timer is opened the predefined timing time in back, and whether described synchronometer numerical value reaches predefined synchronous count threshold, if close described timer, otherwise enter desynchronizing state.
If described base station is in desynchronizing state, then the base station indicates this user's UL (up link) to be in desynchronizing state by NBAP message to RNC.If when user terminal was in desynchronizing state, the rrc layer of user terminal can be initiated cell update message to RNC, tells the signal quality of the present UE of RNC to worsen, and the indication physical layer enters desynchronizing state.
User terminal and base station are controlled wireless link synchronization/step-out according to the disclosed mode of Fig. 2 respectively, but, in control procedure, because the every state that all will report this sense cycle through the one-time detection cycle of physical layer to high level, and the time that sense cycle is provided with is all shorter, therefore cause physical layer and high-level signaling frequent alternately, increased the high-rise complexity that wireless link synchronization/step-out is handled simultaneously, and because physical layer and high-rise letter are mutual frequent, make that the efficient of synchronous/step-out control is low, and then influence subsequent operations such as cell update, cause consequences such as impacting communication quality.
Summary of the invention
The object of the present invention is to provide the control method of wireless link synchronization/step-out in a kind of wireless communication system, to solve in the prior art in wireless link synchronization/step-out control procedure, physical layer and high-level signaling frequently cause the high-rise complexity that wireless link synchronization/step-out is handled alternately, and then influence the technical problem of communication quality.
For addressing the above problem, the present invention discloses the control method of wireless link synchronization/step-out in a kind of wireless communication system, described wireless communication system comprises RNS and user terminal at least, described RNS comprises base station and radio network controller, may further comprise the steps: a: base station and the user terminal high level by local terminal in advance will be dispensed to the physical layer of local terminal with/step-out count threshold; B: after Radio Link was set up, same/step-out numeration of base station and the user terminal physical layer statistics local terminal by separately when the same/step-out count value of physical layer statistics reaches described during with/step-out count threshold, reported signaling to the high level of local terminal.
Step (b) specifically comprises: (1) is after synchronous communication is set up in terminal and base station, the physical layer of base station and user terminal is calculated the wireless chaining status of this sense cycle respectively according to predefined sense cycle, and judge whether described state is desynchronizing state, if carry out step (2), otherwise carry out step (3); (2) physical layer adds 1 with the step-out count value earlier, and with the zero clearing of synchronometer numerical value, judges then whether described step-out count value equals described step-out count threshold, if then report step-out primitive to the local terminal high level, otherwise carry out step (1); (3) physical layer adds 1 with synchronometer numerical value earlier, and with the zero clearing of step-out count value, judges then whether described synchronometer numerical value equals described synchronous count threshold, if then report synchronization primitives to the local terminal high level, otherwise carry out step (1).
When the high level of base station/user terminal receives synchronization primitives, the then synchronometer numerical value zero clearing of physical layer, the Radio Link that the physical layer of local terminal is carried out next sense cycle again is with the state of/step-out; When the high level of base station/user terminal receives step-out primitive, open timer, judge whether the high level of local terminal receives described synchronization primitives in predefined timing time, if the timeing closing device, otherwise local terminal enters desynchronizing state.
The high level of described user terminal and base station further is dispensed to the second synchronometer numerical value of local terminal the physical layer of local terminal.
At the beginning of the Radio Link of described user terminal and base station is set up, the physical layer of user terminal and base station is consecutively detected in K sense cycle synchronously, then the high level to local terminal sends synchronization primitives, so that local terminal enters synchronous regime, K is the described second synchronometer numerical value.
The wireless chaining status that physical layer is calculated this sense cycle in the step (1) further comprises: physical layer detects at least one special burst piece or has the check results of cyclic redundancy check (CRC) of a transmission block correct in described sense cycle in the detected transmission channel in described sense cycle, then physical layer detects one subsynchronous on described Radio Link, otherwise physical layer detects step-out one time on described Radio Link.
When local terminal is in desynchronizing state, further comprise: if local terminal is a user terminal, then the terminal physical layer delivering power is controlled TPC and is set to " UP "; If local terminal is the base station, then base station physical layer TPC is set to " UP ", uses the increase transmitting power, recovers the quality of Radio Link.
Local terminal is handled desynchronizing state and further comprised: if local terminal is a user terminal, then the high level of described terminal indicates the down link of described terminal to be in desynchronizing state by cell update message to described radio network controller; If local terminal is the base station, then the high level of base station sends Radio Link Failure message to described radio network controller, indicates described up link to be in desynchronizing state.
Compared with prior art, the present invention has the following advantages: the physical layer of user terminal of the present invention and base station obtains parameters such as the synchronous count threshold of local terminal and step-out count threshold in advance, after Radio Link is set up in user terminal and base station, step-out numeration and numeration synchronously are placed on physical layer and finish, have only after step-out and synchronous count value reach the parameter value that obtains in advance, physical layer just can report signaling to the high level of local terminal, reduced the mutual flow of physical layer and high-level signaling thus, advance this improved high-rise processing synchronously/effect of step-out.
And, the high level of user terminal of the present invention and base station also will be after the Radio Link of user terminal physical layer and base station physical layer be set up, judgement enters the condition (the second synchronometer numerical value) of synchronous regime and allocates in advance to physical layer separately, when physical layer detect satisfy enter the synchronous regime condition after just to the high-rise synchronization primitives that sends of local terminal, also reduced the mutual flow of physical layer and high-level signaling thus, so improved high-rise processing synchronously/efficient of desynchronizing state.
Description of drawings
Fig. 1 is the protocol architecture that is adopted in the 3G system;
Fig. 2 is the control flow chart of the wireless link synchronization/step-out of wireless communication system in the prior art;
Fig. 3 is the flow chart of the control method of wireless link synchronization/step-out in the wireless communication system of the present invention;
Fig. 4 is a kind of specific implementation flow chart of the control method of wireless link synchronization/step-out in the wireless communication system of the present invention;
Fig. 5 connects the flow chart of setting up for the RRC signaling that adopts the wireless link synchronization/step-out control in the cordless communication network of the present invention.
Embodiment
Below in conjunction with accompanying drawing, specify the present invention.
Wireless communication system of the present invention mainly refers to 3G (third generation) system.Because in the control flow of the wireless link synchronization/step-out of existing 3GPP (3G (Third Generation) Moblie agreement) regulation, need that physical layer is every to send wireless chaining status information through a sense cycle to high level, cause physical layer and high-rise mutual frequent thus.For this reason, the applicant will be dispensed to physical layer by high level in advance with/parameters such as step-out count threshold, and physical layer is finished the counting work of synchronous regime and desynchronizing state, reduces thus synchronously/interaction times of the on the middle and senior level and physical layer of step-out control procedure, and then improves high-rise control efficiency.
See also Fig. 3, it is the flow chart of the control method of wireless link synchronization/step-out in the wireless communication system of the present invention.It may further comprise the steps: base station and the user terminal high level by local terminal in advance will be dispensed to the physical layer (step S10) of local terminal with/step-out count threshold; After Radio Link is set up, same/step-out numeration of base station and the user terminal physical layer statistics local terminal by separately, described with/step-out count threshold if the same/step-out count value of physical layer statistics reaches, then the high level to local terminal reports signaling (S20).
See also Fig. 4, it is an implementing procedure figure of wireless link synchronization/step-out control method in the wireless communication system of the present invention.It specifically comprises:
S210: the high level of base station and user terminal respectively with the step-out count threshold of local terminal and synchronously count threshold be dispensed to the physical layer of local terminal.In the regulation of 3GPP agreement, the step-out count threshold of base station is N_OUTSYNC_IND, and count threshold is N_INSYNC_IND synchronously; The step-out count threshold of user terminal is N313, and count threshold is N315 synchronously;
S220: after synchronous communication is set up in terminal and base station, the physical layer of base station and user terminal is calculated the wireless chaining status of this sense cycle respectively according to predefined sense cycle, and judge whether described state is desynchronizing state, if carry out step S230, otherwise carry out step S240.Physical layer detects at least one special burst piece or has the check results of cyclic redundancy check (CRC) of a transmission block correct in described sense cycle in the detected transmission channel in described sense cycle, then described wireless chaining status is a synchronous regime, otherwise described wireless chaining status is a desynchronizing state;
S230: physical layer adds 1 with the step-out count value earlier, and with the zero clearing of synchronometer numerical value, judges then whether described step-out count value equals described step-out count threshold, if, report step-out primitive to the local terminal high level, otherwise carry out step S220, to judge the wireless chaining status of next sense cycle.The initial value of step-out count value and synchronometer numerical value is zero;
S240: physical layer adds 1 with synchronometer numerical value earlier, and with the zero clearing of step-out count value, judges then whether described synchronometer numerical value equals described synchronous count threshold, if, then report synchronization primitives, otherwise carry out step S220, to judge the wireless chaining status of next sense cycle to the local terminal high level;
For the high level of base station/user terminal, when the high level of base station/user terminal receives synchronization primitives, the then synchronometer numerical value zero clearing of physical layer, the Radio Link that the physical layer of local terminal is carried out next sense cycle again is with the state of/step-out.If the signaling that receives is described step-out primitive, open timer, and judge whether the high level of local terminal receives described synchronization primitives in predefined timing time, if the timeing closing device, otherwise local terminal enters desynchronizing state.If the signaling that receives is described synchronous aphasia, then have only under the situation that timer opens, just can impel high-rise timeing closing device, otherwise, high-risely just directly abandon described synchronous aphasia.
At the beginning of the physical layer of the physical layer of user terminal and base station is set up Radio Link (after also comprising wireless link reconfigured coming into force), the physical layer of user terminal detects the synchronous regime of Radio Link in 312 sense cycle of N continuous, to the high-rise synchronization primitives that sends of UE, report this user terminal to enter synchronous regime.In the present embodiment, N312 is defined as the second synchronometer numerical value, this parameter can be dispensed to physical layer by high level in step S210, after the physical layer that is mainly used in the physical layer of indicating terminal and base station is set up Radio Link, judge the condition that terminal enters the initial synchronisation state.
At the beginning of the physical layer of the physical layer of user terminal and base station is set up Radio Link (after also comprising wireless link reconfigured coming into force), the physical layer of base station detects the synchronous regime of Radio Link in N continuous _ INSYNC_IND sense cycle, to the high-rise synchronization primitives that sends in base station, report this user terminal to enter synchronous regime.N_INSYNC_IND is the second synchronometer numerical value, and this parameter can be dispensed to physical layer by high level in step S210, after the physical layer that is mainly used in the physical layer of indicating terminal and base station is set up Radio Link, judges the condition that the base station enters the initial synchronisation state.
When user terminal was in desynchronizing state, at this moment, TPC (delivering power control) was set to " UP ", and the high level of described terminal indicates the down link of described terminal to be in desynchronizing state by cell update message to described radio network controller.
When the base station was in desynchronizing state, the physical layer TPC of this base station was set to " UP ", and the high level of base station indicates described up link to be in desynchronizing state to described radio network controller transmission Radio Link Failure Indication message.
Below process that connect to set up with RRC in the cordless communication network be example, specify to connect and set up in the process at RRC, how to use the present invention carry out user terminal and base station synchronously/step-out control.
See also Fig. 5, it connects the signaling process figure that sets up for using cordless communication network RRC of the present invention.This set up process based on cordless communication network comprise user terminal (UE), base station (NodeB) and RNC (radio network controller) at least.It may further comprise the steps:
As UE RRC in IDLE (free time) pattern the time, when the NAS layer (Non-Access Stratum) of UE need be set up signaling and connects, UE RRC initiated RRC connection request message (rrcConnectionRequest) to RNC.After RNC receives UE RRC connection request message, RNC sends Radio Link to NodeB and sets up request (Radio Link Setup Request), after NodeB NBAP receives Radio Link foundation request, then send NBAP_PHY_RL_Setup_Req message to NodeB PHY, set up the resource information (as parameter informations such as N312/N315/N_INSYNC_IND/N_OUTSYNC_IND) of RL for NodeB PHY configuration, successfully dispose after the resource information of finishing and set up RL at NodeBNBAP, then set up message (Radio Link Setup Response) to RNC response Radio Link, RNC sends RRC to UE RRC and connects foundation (rrcConnectionSetup) message after the RL that receives NodeB sets up response message.
UE RRC receive RRC that RNC transmits connect set up message after, set up the RL resource information of request (P_RRC_PHY_RL_SETUP_REQ) message arrangement UE PHY (physical layer of user terminal) by RL.After the RL of UE PHY resource information configuration successful, send the P_PHY_RRC_RL_SETUP_CNF response message to UE RRC.After initial synchronous requirement was satisfied, UE just returned to a RRC connection setup complete message of RNC (rrcConnectionSetupComplete).Meanwhile, the physical layer of base station is also carried out the initial synchronisation indication in the lump, after initially finishing synchronously, sends a wireless links to RNC and sets up indication (Radio Link Restore Indication).
After the Radio Link between terminal in the cordless communication network and base station was set up successfully, UE RRC was in the CELLDCH state.In this state, base station and terminal begin to monitor respectively the synchronous/desynchronizing state of local terminal Radio Link.Wherein, synchronous/desynchronizing state of base station monitoring up link, synchronous/desynchronizing state of terminal monitors down link.Because in the present invention, the high level of base station and user terminal respectively with the step-out count threshold of local terminal and synchronously count threshold allocate physical layer in advance to local terminal, add up synchronometer numerical value in the coincidence counter and the step-out count value in the step-out counter respectively according to the method physical layer of step S220-S240 among Fig. 4.The step-out count value of adding up when the physical layer of user terminal equals step-out count threshold N313, then send step-out primitive to UE RRC by P_PHY_RRC_SYNC_IND message, UE RRC starts timer T313, before T313 is overtime, UE RRC is not if receive the synchronization primitives of physical layer, and then UE RRC sends cell update message (CellUpdate) to RNC.The step-out count value of adding up when the physical layer of base station equals step-out count threshold N_OUTSYNC_IND, then send step-out primitive to Node B NBAP by RL_OUT_SYNC_PRIMITIVE message, Node BNBAP starts timer T_RLFAILURE, Node B NBAP before T_RLFAILURE is overtime is not if receive the synchronization primitives of physical layer, and then Node B NBAP indicates this user's UL (up link) to be in desynchronizing state by Radio link FailureIndication message to RNC.
If RNC thinks that UE can not continue communication, then RNC may send RRC connection release message (RRC CONNECTION RELEASE), discharges all resources of this user.
Above-mentioned flow process only illustrates synchronously/step-out is controlled at RRC and connects the implementation procedure of setting up in the process, other signaling processes for synchronously/the step-out control procedure is also similar, do not repeat them here.More than disclosed only be several specific embodiment of the present invention, but the present invention is not limited thereto, those skilled in the art can think variation, all should fall into protection scope of the present invention.
Claims (8)
1, the control method of wireless link synchronization/step-out in a kind of wireless communication system, described wireless communication system comprises RNS and user terminal at least, described RNS comprises base station and radio network controller, it is characterized in that, may further comprise the steps:
A: base station and the user terminal high level by local terminal in advance will be dispensed to the physical layer of local terminal with/step-out count threshold;
B: after Radio Link was set up, same/step-out numeration of base station and the user terminal physical layer statistics local terminal by separately when the same/step-out count value of physical layer statistics reaches described during with/step-out count threshold, reported signaling to the high level of local terminal.
2, the control method of the same/step-out of Radio Link in the wireless communication system as claimed in claim 1 is characterized in that, step (b) specifically comprises:
(1) after synchronous communication is set up in user terminal and base station, the physical layer of base station and user terminal is calculated the wireless chaining status of this sense cycle respectively according to predefined sense cycle, and judge whether described state is desynchronizing state, if carry out step (2), otherwise carry out step (3);
(2) physical layer adds 1 with the step-out count value earlier, and with the zero clearing of synchronometer numerical value, judges then whether described step-out count value equals described step-out count threshold, if then report step-out primitive to the local terminal high level, otherwise carry out step (1);
(3) physical layer adds 1 with synchronometer numerical value earlier, and with the zero clearing of step-out count value, judges then whether described synchronometer numerical value equals described synchronous count threshold, if then report synchronization primitives to the local terminal high level, otherwise carry out step (1).
3, the control method of the same/step-out of Radio Link in the wireless communication system as claimed in claim 2 is characterized in that, also comprises:
When the high level of base station/user terminal receives synchronization primitives, the then synchronometer numerical value zero clearing of physical layer, the Radio Link that the physical layer of local terminal is carried out next sense cycle again is with the state of/step-out;
When the high level of base station/user terminal receives step-out primitive, open timer, judge whether the high level of local terminal receives described synchronization primitives in predefined timing time, if the timeing closing device, otherwise local terminal enters desynchronizing state.
4, the control method of wireless link synchronization/step-out in the wireless communication system as claimed in claim 1 or 2 is characterized in that, the high level of described user terminal and base station further is dispensed to the second synchronometer numerical value of local terminal the physical layer of local terminal.
5. Radio Link is with the control method of/step-out in the wireless communication system as claimed in claim 4, it is characterized in that, at the beginning of the Radio Link of described user terminal and base station is set up, the physical layer of user terminal and base station is consecutively detected in K sense cycle synchronously, then the high level to local terminal sends synchronization primitives, so that local terminal enters synchronous regime, K is the described second synchronometer numerical value.
6, the control method of wireless link synchronization/step-out in the wireless communication system as claimed in claim 2 is characterized in that, the wireless chaining status that the middle physical layer of step (1) is calculated this sense cycle further comprises:
Physical layer detects at least one special burst piece or has the check results of cyclic redundancy check (CRC) of a transmission block correct in described sense cycle in the detected transmission channel in described sense cycle, then physical layer detects one subsynchronous on described Radio Link, otherwise physical layer detects step-out one time on described Radio Link.
7, the control method of wireless link synchronization/step-out in the wireless communication system as claimed in claim 2 is characterized in that, when local terminal is in desynchronizing state, further comprises:
If local terminal is a user terminal, then user terminal physical layer delivering power is controlled TPC and is set to " UP ";
If local terminal is the base station, then base station physical layer TPC is set to " UP ", uses the increase transmitting power, recovers the quality of Radio Link.
8, the control method of wireless link synchronization/step-out in the wireless communication system as claimed in claim 7 is characterized in that, local terminal is handled desynchronizing state and further comprised:
If local terminal is a user terminal, then the high level of described user terminal indicates the down link of described user terminal to be in desynchronizing state by cell update message to described radio network controller;
If local terminal is the base station, then the high level of base station sends Radio Link Failure message to described radio network controller, and the indication up link is in desynchronizing state.
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| BRPI0710322A2 (en) * | 2006-05-05 | 2011-08-09 | Interdigital Tech Corp | long-link up and down link radio link failure detection procedures and apparatus for this procedure |
| CN100455097C (en) * | 2006-11-27 | 2009-01-21 | 华为技术有限公司 | Solution method for call loss and wireless network controller |
| CN101478816B (en) * | 2008-01-02 | 2010-12-08 | 大唐移动通信设备有限公司 | In-sync and out-of-sync indication reporting method and apparatus, wireless link monitoring method and system |
| CN201887949U (en) * | 2008-09-22 | 2011-06-29 | 交互数字专利控股公司 | Wireless transmitting and receiving unit for determining failure of a wireless chain |
| CN101925036B (en) * | 2009-06-10 | 2015-02-11 | 大唐移动通信设备有限公司 | Transmitting method, system and device of terminal high-level signaling |
| CN102045872B (en) * | 2009-10-20 | 2014-11-05 | 中国移动通信集团公司 | Method, network side equipment and system for remedying call drop/disconnections |
| CN103228001A (en) * | 2013-03-22 | 2013-07-31 | 中兴通讯股份有限公司 | Radio link failure processing method and device |
| WO2017132994A1 (en) * | 2016-02-05 | 2017-08-10 | 华为技术有限公司 | Information sending method, information reception method, uplink synchronization method, data sending instruction method, and device |
| CN107155194B (en) * | 2016-03-04 | 2020-02-21 | 中国移动通信集团山东有限公司 | Signaling acquisition method and device |
| CN105898686B (en) * | 2016-06-12 | 2019-09-24 | 成都信息工程大学 | A kind of method and user equipment of Radio Link Failure recovery |
| CN109413690B (en) * | 2017-08-18 | 2020-09-29 | 维沃移动通信有限公司 | Multi-beam measurement reporting method, mobile terminal and network side equipment |
| US11690030B2 (en) | 2017-09-25 | 2023-06-27 | Beijing Xiaomi Mobile Software Co., Ltd. | Wireless link monitoring method and device and indication receiving method and device |
| CN109802735B (en) * | 2017-11-17 | 2022-01-28 | 中兴通讯股份有限公司 | Method and device for measuring wireless link, terminal, base station and storage medium |
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