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WO2008000184A1 - Procédé et système de gestion de la mobilité - Google Patents

Procédé et système de gestion de la mobilité Download PDF

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Publication number
WO2008000184A1
WO2008000184A1 PCT/CN2007/070151 CN2007070151W WO2008000184A1 WO 2008000184 A1 WO2008000184 A1 WO 2008000184A1 CN 2007070151 W CN2007070151 W CN 2007070151W WO 2008000184 A1 WO2008000184 A1 WO 2008000184A1
Authority
WO
WIPO (PCT)
Prior art keywords
bandwidth
cell
user terminal
information
capability information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2007/070151
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English (en)
Chinese (zh)
Inventor
Yinghui Yu
Yanyan Chen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2008000184A1 publication Critical patent/WO2008000184A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/10—Flow control between communication endpoints
    • H04W28/14—Flow control between communication endpoints using intermediate storage
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H04W28/20—Negotiating bandwidth
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point

Definitions

  • the present invention relates to the field of communication technologies, and in particular, to an implementation scheme for implementing mobility control on a user terminal, for example, a mobility processing technology considering bandwidth capability in an LTE (Long Term Evolution) system.
  • LTE Long Term Evolution
  • the cell reselection refers to a process in which a user reselects a neighboring cell with good quality of service as a serving cell according to the quality of service of a neighboring cell.
  • the implementation scheme of the corresponding cell reselection is as follows:
  • Step 1 After the mobile station compares according to a specific criterion (such as the UMTS H criterion or the R criterion ordering criterion), the signal of the neighboring cell is better than the cell currently served by the mobile station;
  • a specific criterion such as the UMTS H criterion or the R criterion ordering criterion
  • Step 2 When the signal of the neighboring cell is better than the duration of the cell currently served by the mobile station reaches or is higher than the T reselection (cell reselection timer duration), the cell will be reselected as the serving cell. In the prior art, if HCS is not considered
  • the R criterion for ranking the measured cells can be expressed as -
  • R Q , - Qoffset + Qoffmbms - TO * (1 - L ) ;
  • R is the ranking value of the serving cell
  • Q is the measured quality value of the serving cell
  • the value of the hysteresis of the cell reselection caused by the UE in the connected state is in the CELL_PCH, CELL_FACH state.
  • the value is sent by the system broadcast message.
  • R is the ranking value of the neighboring cell
  • Q I is the measured value of the neighboring cell
  • Qoffset is the partial cell reselection between the serving cell and the neighboring cell.
  • the value can be set and sent in the system broadcast message.
  • the component ⁇ can be expressed as:
  • the HCS is indicated in the system message; it is a timer applied to each neighboring cell.
  • ⁇ The value of ⁇ is started from zero.
  • the value of the timer ⁇ ⁇ is stopped.
  • Broadcast-multicast service Preferred frequency
  • the offset Qoffmbms can be ignored in the description of the above R criterion.
  • s is its measured value meas, s and a hysteresis value yst
  • the ranking value R is its measured value Q
  • the UE can reselect the new serving cell when the following conditions are met:
  • the cell reselection begins.
  • the UE in the connected state if in CELL_PCH
  • the time interval is Treselection (in Treselection under FACH).
  • the UE also uses a scaling rule for Treselection or Treselection or s s, PCH.
  • Treselection makes changes to facilitate the impact of the corresponding factors on cell reselection in Tres s, FACH
  • the zoom of the election is reflected.
  • the bandwidth of the system and the bandwidth of the UE are corresponding.
  • the bandwidth of the UE and the GSM system air interface is 200 KHz; and in the WCDMA system, the bandwidth of the UE and the WCDMA system air interface is 5 MHz, and the bandwidth of the system is fixed, so the above cell reselection scheme can be Goodly meet the needs of community re-election.
  • the peak rate of HSDPA High Speed Downlink Packet Access Technology
  • 3GPP Third Generation Partnership Project
  • the designed downlink peak rate is 100 Mbit/ s data transmission rate, and has good backward compatibility to protect existing investments.
  • the bandwidth capability of the UE is 20 MHz, and in future system development, the bandwidth of the UE may also be extended to be higher than 20 MHz.
  • the cell bandwidth on the network side is 1.25M, 2. 5M, 5M, 10M and 20M.
  • the first case is: A high-capacity UE resides in a cell with a low system bandwidth.
  • the problem that may occur is that when the UE wants to initiate high-speed services, the system cannot support these because the system does not have enough bandwidth.
  • the solutions that can be used include: The system either establishes the connection with the default configuration and then switches to the appropriate cell, or the system directly reselects the UE to the appropriate cell. Both schemes introduce additional processing or signaling overhead.
  • the second case is: A low-capacity UE resides in a cell with a high system bandwidth.
  • the problem that may occur is that since each UE is a shared system resource, the low-capability UE has no effect on the shared resources of the system.
  • the access of low-capacity UEs may cause a certain amount of system resources to be wasted. For example, when a UE with a bandwidth of 1.25 M accesses a system with a bandwidth of 20 M, the rate of the initiated service is not high each time the UE accesses through the RACH (random access channel) due to the capability limitation of the UE.
  • RACH random access channel
  • a 10M bandwidth UE accesses the same bandwidth system, although the 10M bandwidth UE also occupies the RACH resource, the service rate initiated by the UE may be higher, and therefore, the RACH or other public resources are also occupied. In this case, high-rate services can bring greater system throughput, which is beneficial to more rational use of system resources.
  • the existing cell handover processing scheme also has the bandwidth problem existing in the cell reselection processing scheme.
  • An object of embodiments of the present invention is to provide a method and system for implementing mobility control, such that in a system with variable bandwidth, a mobility control operation can be implemented by considering a bandwidth capability of a UE and/or a bandwidth capability of a cell. To ensure the reasonable and effective use of network resources.
  • An embodiment of the present invention provides a method for implementing mobility control, including:
  • An embodiment of the present invention provides an apparatus for implementing mobility control, including:
  • a bandwidth information acquiring unit configured to separately acquire and determine bandwidth capability information of the user terminal and/or bandwidth capability information of the cell;
  • the bandwidth information-based mobility control processing unit is configured to perform mobility control operations on the user terminal according to the obtained bandwidth capability information of the user terminal and/or bandwidth capability information of the cell.
  • the mobility control scheme considering the UE and/or the bandwidth capability of the cell proposed by the embodiment of the present invention enables the UE to change to the appropriate bandwidth according to the service requirement.
  • the camped cell can better implement the high-speed service that the terminal may initiate, reduce unnecessary cell reselection or handover, meet the bandwidth requirement of the UE, and reasonably utilize the bandwidth resource of the cell.
  • FIG. 1 is a schematic structural diagram of a specific implementation of an apparatus according to an embodiment of the present invention.
  • the embodiment of the present invention reflects the bandwidth influencing factors of the system in the mobility control process such as cell change.
  • the mobility control operation may specifically include, but is not limited to, cell reselection of the user terminal in an idle state, cell reselection of the user terminal in an activated state, cell handover of the user terminal in an activated state, and a cell.
  • Update, cell change, and cell relocation may be: after determining the bandwidth usage of the UE and/or the bandwidth usage of the target cell, the UE measures the neighboring cell and the currently served cell according to the UE. Certain sorting criteria (such as R criteria in UMTS (Universal Mobile Telecommunications System) after considering bandwidth factors) are sorted, and the cell with the best sorting result is selected for camping.
  • Certain sorting criteria such as R criteria in UMTS (Universal Mobile Telecommunications System) after considering bandwidth factors
  • the impact of the bandwidth factor in the R criterion of the UMTS is used to obtain the current serving cell and the neighboring cell.
  • the specific implementation manners of the embodiments of the present invention are described in the following, and the corresponding cell handover processing procedure is similar to the cell reselection processing procedure.
  • the network side decides handover, cell update, and retargeting target cell for the UE, the network side considers the UE's band.
  • the wide capability information and the bandwidth capability information of the target cell determine the target cell, handover the UE, and change or relocate the cell to a suitable cell.
  • the embodiment of the present invention may specifically according to the bandwidth information of the user terminal in the process of sorting by the cell reselection rule.
  • bandwidth capability information also known as bandwidth capability information
  • bandwidth capability information of the cell also known as bandwidth capability information
  • the influence of the bandwidth factor is reflected by the offset quantity, that is, when the cell is sorted, a separate bandwidth influence factor Qoffset is added, and the specific value may be defined by the UE according to the actual situation of the network.
  • the network side sets different bandwidth impact parameters according to the bandwidth capability information or system bandwidth capability information of the UE, that is, the network side may be based on different bandwidth capabilities of the UE or different bandwidth capability information of the system.
  • a set of offset parameters is given, and then the UE selects an appropriate offset according to its bandwidth capability information or the bandwidth information of the cell; or the network side may also correspond to the bandwidth capability information of the UE and the bandwidth capability information of the system.
  • the relationship is set to set different bandwidth impact parameters, that is, the network side sets a set of bandwidth influence parameters according to various different correspondences between the bandwidth capability information of the UE and the bandwidth capability information of the system, and then the UE according to its own bandwidth capability information and the bandwidth of the system.
  • the setting of the set of offset quantity parameters may be set separately for each parameter, or may be associated with each parameter, or may directly give a basic offset quantity, and a correction value of different bandwidth or Correct the step size.
  • R Q , + Qhyst ;
  • R Q , - F Qoffset ;
  • bandwidth influence factor The effect of the bandwidth factor is reflected by the bandwidth influence factor, that is, when the cell is sorted, the Qoff set is multiplied by a bandwidth influence factor F, and the change of the bandwidth influence factor affects the s, n bw of the cell.
  • w is equal to 1.
  • a (a>l ) is a variable whose value can be set according to network conditions.
  • the value of cell UE bw is greater than 1.
  • the value of a becomes larger, it means that the degree of mismatch becomes larger, and the value of the bandwidth influence factor F changes accordingly.
  • the value of cell UE bw is greater than 1.
  • the value of b becomes smaller, it means that the degree of mismatch increases, and the value of the bandwidth influence factor F becomes larger.
  • b (b ⁇ l ) is a variable whose value can be set according to network conditions.
  • any one of the three methods similar to the first embodiment may be adopted when setting the bandwidth influence factor:
  • the setting of a set of bandwidth impact factors may be set separately for each parameter, or may be an association setting between each parameter, or may directly give a basic bandwidth impact factor and different bandwidths. Correction value or correction step size.
  • the bandwidth scaling factor is increased by:
  • the essence is to adjust the ordering of the cells in the cell reselection process
  • the specific implementation manner 3 is to determine the reselection according to the bandwidth factor.
  • the timing of neighboring cells Therefore, in the specific implementation process, the embodiment of the present invention may select any one of the specific implementation manners 1, 2, and 3.
  • the specific implementation manner 1 and the specific implementation manner 3 may be selected, or the specific implementation manner is The combination with the third embodiment.
  • the bandwidth influence parameter may also be directly introduced in the Qo ffset, that is, the corresponding s, ns are considered in the process of obtaining the Qoffset. , n
  • the bandwidth affects the parameters to obtain a Qoffset value based on the bandwidth impact parameter, after which the ordering criteria
  • the embodiment of the present invention may be implemented by adding a processing unit to the user terminal to facilitate the terminal. Cell reselection is performed according to the corresponding bandwidth influence value.
  • ScalingFactor' is based on the assumption that high-capacity UEs are more likely to initiate high-rate services, and high-bandwidth systems are more capable of providing high-speed service support.
  • the UE does not initiate services that can reach its bandwidth capability, and because the network needs to support access of many UEs, it is difficult for the network to provide network system bandwidth for a single UE.
  • the high rate of service required by the UE Therefore, in the specific implementation process of the embodiment of the present invention, the calculation of the UE bandwidth and the cell bandwidth may be first evaluated, and then, according to the evaluation result, according to the foregoing
  • a specific implementation provides a cell reselection operation based on bandwidth factors.
  • the capability of the UE in R6 refers to the maximum rate of the UE in the uplink and downlink when a certain radio condition is met.
  • the capability is shown. Moreover, if the uplink and downlink power sharing, the uplink maximum rate and the downlink maximum rate may be used separately, so that more user categories may be derived, and the capabilities of different UEs represented by each user category may also be represented by B. .
  • the UE may also reserve the specific QoS settings obtained from the network side, so that the services that the UE may initiate (especially the services that guarantee the bit rate) may obtain the approximate bandwidth required by the service according to the setting of the Qo S. This value can be expressed in Btraffic.
  • the UE reads the values of B and B. If the two values are valid, the value of the actual used bandwidth of the UE is capability traf f ic
  • the maximum value is calculated; if the values of B and B are invalid, the bandwidth inherent to the UE is used.
  • the capability traffic inherent is the UE bandwidth.
  • the current camped cell of the UE is selected according to the past specific use status of the UE. That is, the UE selects a suitable camped cell according to the demand for cell bandwidth of the service initiated/accepted in the past period of time.
  • the specific implementation manner of the foregoing process is: adding a timer and a recording unit to the UE to record the bandwidth resources used by all services initiated by the UE in a certain period of time.
  • the maximum value Bmax of the bandwidth of the service received or initiated by the UE during the time T is recorded.
  • SP if the maximum cell bandwidth value required by the UE initiated service within a given time T is Bmax, when performing cell reselection, the UE preferentially selects a cell whose cell bandwidth is greater than or equal to this value.
  • two different specific embodiments (1) and (2) may be selected to determine the UE bandwidth, and then perform cell reselection according to the UE bandwidth. For example, in one case, when the UE does not initiate a service that can reach its current camped cell bandwidth capability, the SP, the bandwidth of the cell is high, but the UE does not need such a high bandwidth, and the manner can be The Bmax value determined by the method described in b) is used as a factor affecting cell reselection. [102] In addition, it should be noted that, when the cell reselection is implemented by using the foregoing implementation manner (2), if the UE has not initiated any service in a given time in the past, the following three methods may be selected. Cell reselection:
  • the effective bandwidth of a cell is related to the bandwidth allocation strategy and load within the cell.
  • the strategy in the cell is that the cell may not allocate the entire bandwidth for each UE, but allocate part of the bandwidth, such as a cell with a system bandwidth of 20 MHz, but the bandwidth allocated by the cell to the UE can only be accessed. Is 10MHz, which is half of the system bandwidth, and the allocated part of the bandwidth can be identified as B;
  • the load of the cell is a practical problem. If the load of a cell is very high, it may not be able to allocate any resources to the newly accessed UE at all, and even the new UE cannot access at all.
  • the UE can obtain the bandwidth and load condition of the cell that is allowed to access in a certain manner, the evaluation of the bandwidth of the access cell, that is, B
  • the UE can learn the corresponding UE bandwidth and the cell bandwidth parameter, and therefore, the corresponding UE bandwidth and the cell bandwidth can be used to determine the offset or partial offset in the corresponding cell reselection sorting process.
  • the value, and the bandwidth scaling factor, can be used to control the cell reselection operation based on the bandwidth factor.
  • the problem of mismatch with the bandwidth of the cell not only exists in the process of cell reselection of the UE in the idle state, but also in the cell reselection in the active state.
  • the corresponding processing is basically the same as the cell reselection process of the UE in the idle state, except that the UE is in an active state, so the history bandwidth usage record of the UE may also be used by the network. Available on the side.
  • the specific implementation of the embodiment of the present invention is specifically described by taking a cell reselection operation in which the user terminal is in an idle state or an activated state as an example.
  • the embodiment of the present invention can also be applied to the cell handover operation of the user terminal in the activated state.
  • the specific cell handover process is also basically the same as the cell reselection process, except that the handover is completely controlled by the network, so the corresponding cell handover operation process is performed by the network side.
  • the embodiment of the present invention further provides an implementation manner, that is, the network side divides the bandwidth of the cell into a group of sub-bands, according to the bandwidth information of the user terminal and the Corresponding relationship between the bandwidth information of a group of sub-bands, for the user terminal to select a corresponding one of the sub-bands as the selected cell band, thereby completing the corresponding cell change operation.
  • the system bandwidth of 20 MHz can be divided into 10MHz, 5MHz, 2. 5MHz, 1. 25MHz and other different frequency bands to meet the access of UEs with different capabilities.
  • This implementation can be controlled directly on the network side.
  • a cell change scheme that considers a UE and a cell bandwidth capability is provided, so that the UE can change to a suitable camping cell according to the bandwidth requirement of the service, and better implement the terminal.
  • High-speed services that may be initiated to reduce unnecessary cell reselection or handover.
  • the UE can select a cell with a better bandwidth capability before initiating the service or the service data arrives, which satisfies the bandwidth requirement of the UE. Waste the bandwidth resources of the cell. And by matching UE bandwidth capabilities And system bandwidth to reduce the extra processing and signaling overhead that may be introduced, or to increase the throughput of the system
  • the embodiment of the present invention further provides a device for implementing cell reselection.
  • the specific implementation structure of the device is as shown in FIG. 1.
  • the device in the embodiment of the present invention may be configured in a user terminal or on the network side.
  • SP when used for performing cell reselection on the user terminal in the idle state or the activated state, the device is set in the user terminal; when used to perform cell handover on the user terminal in the activated state,
  • the device is disposed in the network side entity.
  • the apparatus specifically includes the following processing unit:
  • a bandwidth information acquiring unit configured to separately acquire and determine bandwidth information of the user terminal and/or bandwidth information of the cell;
  • the bandwidth information acquiring unit may be specifically configured to determine a bandwidth of the user terminal according to the bandwidth of the user terminal, the capability of the user terminal, the historical bandwidth used by the user terminal, and/or the bandwidth of the cell where the subscription service of the user terminal is located. And determining bandwidth information of the cell according to the bandwidth of the cell itself and/or the bandwidth allocation policy or the cell load in the cell.
  • the bandwidth information acquiring unit may include:
  • the historical business record unit is used to record the business that has been carried out between the user terminal and the network in the past period of time;
  • the historical bandwidth determining unit is configured to determine a historical bandwidth used by the user terminal according to the information recorded by the historical service recording unit.
  • the bandwidth information acquiring unit may further include:
  • a terminal subscription service record unit configured to record service quality information required for a contract service between a terminal and an operator obtained from a network side during a registration process or a service change process;
  • the subscription bandwidth determining unit is configured to determine a subscription bandwidth of the user terminal according to the information recorded by the terminal subscription service recording unit.
  • the bandwidth information acquiring unit when the bandwidth information acquiring unit includes the historical bandwidth determining unit and the subscription bandwidth determining unit, the bandwidth information acquiring unit further includes a corresponding timer, where the timer is set. Within a certain period of time, if the terminal has initiated a service, it can determine the unit according to the historical bandwidth. The historical bandwidth information is used as the bandwidth information of the user terminal. If the terminal has not initiated any service within the time period of the timer, the subscription bandwidth information determined by the subscription bandwidth determining unit is used as the bandwidth information of the user terminal.
  • [2] (2) a bandwidth control-based mobility control processing unit, configured to perform mobility control operations on the user terminal according to bandwidth information of the user terminal and/or bandwidth information of the cell;
  • the bandwidth information-based mobility control processing unit may specifically include:
  • a correspondence determining unit configured to process the correspondence between the bandwidth information of the user terminal and the bandwidth information of the cell according to a predetermined rule to obtain corresponding parameter information, and then send the obtained parameter information to the mobility control operation.
  • a mobility control operation unit configured to obtain parameter information determined by the correspondence determining unit, and perform a mobility control operation for the user terminal according to the parameter information and the sorting criterion;
  • the cell change operation unit may be at least one of a cell reselection operation unit, a cell handover operation unit, a cell update unit, a cell change unit, and a cell relocation unit, where: [139] When the cell reselection is performed on the user terminal in the idle state or the activated state, the cell reselection operation unit is set in the user terminal;
  • the cell switching operation unit when used for performing cell handover on a user terminal in an activated state, the cell switching operation unit
  • At least one of a cell update unit, a cell change unit, and a cell relocation unit is disposed in the network side entity.
  • the embodiment of the present invention uses an offset or a bandwidth influence factor in the reselection ordering criterion or implicitly modifies the original parameter or in the selection time.
  • the bandwidth scaling factor is added to change the reselection criteria in the prior art, thereby reflecting the impact of the bandwidth variation of the system on the cell reselection.
  • the UE bandwidth and the cell bandwidth are re-evaluated in combination with the influencing factors in the actual application.
  • the UE can be reselected to the appropriate camping cell according to the bandwidth requirement of the service, better implement the high-speed service that the system may initiate, reduce unnecessary cell reselection or handover, and enable the UE to initiate service or service data.
  • the cell with the appropriate bandwidth is selected, which satisfies the bandwidth requirement of the UE and does not waste the bandwidth resource of the cell.
  • the additional processing and signaling overhead that may be introduced is reduced, or the throughput of the system is increased.
  • the embodiment of the present invention can also be applied to the operation process of cell handover, and can bring the same Such a beneficial effect.

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Un procédé et système de gestion de la mobilité incluant une solution d'exécution de la gestion de mobilité consiste à: déterminer l'information de largeur de bande de l'équipement utilisateur et cette information des cellules séparément, et de définir le paramètre d'influence de largeur de bande en fonction de ladite information de largeur de bande de l'équipement utilisateur et/ou de cette information des cellules, de régler la file d'attente des cellules mesurées, et de choisir une cellule en conséquence. La présente invention peut examiner la demande de service portant sur la largeur de bande et resélectionner la cellule résidente appropriée, et satisfaire à la demande de largeur de bande de l'équipement utilisateur et économiser de la ressource de largeur de bande de la cellule. La présente invention réduit également le traitement supplémentaire potentiel et les efforts de signalisation, et améliore le débit du système.
PCT/CN2007/070151 2006-06-21 2007-06-21 Procédé et système de gestion de la mobilité Ceased WO2008000184A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200610082959XA CN101052216B (zh) 2006-06-21 2006-06-21 实现小区变更的方法及系统
CN200610082959.X 2006-06-21

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CN109803312B (zh) 2017-11-17 2020-10-30 电信科学技术研究院 切换方法、终端和网络侧设备
CN107896382B (zh) * 2017-12-26 2020-12-22 Oppo广东移动通信有限公司 网络切换控制方法及装置
CN108882321B (zh) * 2018-06-13 2021-01-29 Oppo广东移动通信有限公司 一种小区重选方法、终端及计算机可读存储介质
WO2020047800A1 (fr) * 2018-09-06 2020-03-12 Qualcomm Incorporated Gestion de problèmes avec de petites cellules de largeur de bande
CN108834191B (zh) * 2018-09-11 2021-03-16 Oppo广东移动通信有限公司 小区重选方法、装置、电子设备及存储介质
CN112312505B (zh) * 2020-11-20 2022-08-16 Oppo（重庆）智能科技有限公司 一种小区选择的方法、装置、电子设备和存储介质
CN112911668B (zh) * 2021-01-28 2023-03-24 浙江大华技术股份有限公司 数据传输方法、装置、存储介质及电子装置

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