WO2013067787A1 - 辅服务小区分组修改方法和终端 - Google Patents

辅服务小区分组修改方法和终端 Download PDF

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Publication number
WO2013067787A1
WO2013067787A1 PCT/CN2012/071447 CN2012071447W WO2013067787A1 WO 2013067787 A1 WO2013067787 A1 WO 2013067787A1 CN 2012071447 W CN2012071447 W CN 2012071447W WO 2013067787 A1 WO2013067787 A1 WO 2013067787A1
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Prior art keywords
serving cell
secondary serving
terminal
packet
uplink synchronization
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PCT/CN2012/071447
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English (en)
French (fr)
Inventor
陈中明
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中兴通讯股份有限公司
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Publication of WO2013067787A1 publication Critical patent/WO2013067787A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/20Selecting an access point

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a method and a terminal for modifying a secondary serving cell group.
  • the user equipment (UE) in the connected state needs to obtain uplink synchronization and downlink synchronization with the base station before transmitting data to the base station.
  • the UE performs measurement on a certain cell, it indicates that downlink synchronization with the cell has been obtained, otherwise a process similar to cell search needs to be performed.
  • the uplink synchronization is obtained by performing a random access procedure, and the transmission time advance (TA, Time Advance) is obtained at the same time.
  • TA Transmission Time Advance
  • the ⁇ is mainly used by the UE to determine the time for transmitting the data. After the UE acquires the uplink synchronization, the uplink synchronization timing is started.
  • TAT time Alignment Timer
  • LTE-A Long Term Evolution Advance
  • CA Carrier Aggregation
  • CC component carriers
  • DL downlink
  • An LTE-A UE with carrier aggregation capability can simultaneously transmit and receive data on multiple component carriers.
  • the UEs involved below are all such UEs unless otherwise specified.
  • the UE after the UE enters the connected state, it can communicate with the source base station through multiple component carriers (such as CC1 and CC2) at the same time.
  • the base station specifies a primary component carrier (PCC) by explicit configuration or according to the protocol.
  • the primary component carrier is called a secondary component carrier (SCC).
  • the serving cell on the PCC is called the primary cell (Pcell, Primary Cell), and the serving cell on the SCC is called the secondary cell.
  • the secondary serving cell is configured by the base station after the UE enters the connected state.
  • Each serving cell has a configured identifier, called a serving cell identifier, and the serving cell identifier of the Pcell is fixed to zero.
  • For the secondary serving cell in addition to the serving cell identity, there is a separate secondary serving cell identity, and the secondary serving cell identity of the secondary serving cell is the same as the corresponding serving cell identity.
  • the number of Scells is as small as one, and the scene is also limited. If the uplink radio head (RRH, Remote Radio Head) and repeater (repeater) are not supported, Therefore, only one TA exists. The UE only needs to initiate uplink synchronization on the Pcell, and the Scell does not initiate.
  • RRH Remote Radio Head
  • repeater repeater
  • the number of Scells will increase due to the increase in data volume. For example, if the number of Scells is increased to four, the scenario will be relaxed.
  • the uplink RRH and repeater are supported. Introduce multiple TAs. For ease of management, service areas that use the same TA are grouped into a TA group. At this time, the TA group containing the Pcell only needs to be processed according to the previous rules, that is, the uplink synchronization is initiated on the Pcell, and after the uplink synchronization, other cells in the group automatically enter the uplink synchronization state.
  • a TA group that does not contain a Pcell must initiate uplink synchronization on a certain Scell, and the random access procedure is performed after the Scell is activated.
  • the Scell must perform normal uplink data transmission after the uplink synchronization is completed. Similarly, the Scell.
  • After uplink synchronization other cells in the group automatically enter the uplink synchronization state.
  • the packet of the primary serving cell cannot be changed, and the packet of the secondary serving cell can be changed.
  • the secondary service cell group is changed, if the processing is not good, the service may be interrupted, and even the interruption may take a long time. Summary of the invention
  • the technical problem to be solved by the present invention is to provide a secondary service d, a method for modifying a group packet, and a terminal, so as to avoid service interruption as much as possible.
  • the present invention uses the following technical solutions:
  • a method for modifying a secondary service cell group includes:
  • the terminal After the terminal learns that the group to which the secondary serving cell belongs is modified, the terminal determines or determines the uplink synchronization state of the terminal in the secondary serving cell according to the indication of the base station, determines or decides according to the indication of the base station, that the terminal is in the secondary serving cell. Downlink synchronization status.
  • the step of obtaining, by the terminal, that the packet to which the secondary serving cell belongs is modified includes: receiving, by the terminal, a packet modification message sent by the base station, and obtaining, by using the packet modification message, a packet to which the secondary serving cell belongs.
  • the method for modifying a secondary serving cell group further includes:
  • the terminal After learning that the packet to which the secondary serving cell belongs is modified, the terminal maintains the activated state of the secondary serving cell.
  • the step of determining, according to the indication of the base station, the uplink synchronization status of the terminal in the secondary serving cell includes:
  • the uplink synchronization status of the secondary serving cell in the secondary serving cell is determined to be synchronized according to the notification message sent by the base station.
  • the step of determining, according to the indication of the base station, the downlink synchronization state of the terminal in the secondary serving cell includes:
  • the notification message is a packet modification message.
  • the step of determining, by the terminal, the uplink synchronization status of the terminal in the secondary serving cell includes:
  • the step of determining, by the terminal, the uplink synchronization state of the terminal in the secondary serving cell according to the uplink synchronization state of the packet to which the secondary serving cell belongs is:
  • the uplink synchronization status of the packet to which the secondary serving cell belongs is out of synchronization, it is determined that the uplink synchronization state of the terminal in the secondary serving cell is out of synchronization.
  • the step of determining, by the terminal, the downlink synchronization status of the terminal in the secondary serving cell includes: The terminal determines that the downlink synchronization state of the terminal in the secondary serving cell is synchronization.
  • the step of determining, by the terminal, the uplink synchronization status of the terminal in the secondary serving cell includes:
  • the terminal defaults that the uplink synchronization status of the terminal in the secondary serving cell is out of synchronization.
  • a terminal for implementing group modification of a secondary serving cell includes a packet state acquiring module, an uplink synchronization state determining module, and a downlink synchronization state determining module, where:
  • the grouping state obtaining module is configured to: enable the terminal to learn that a group to which a secondary serving cell belongs is tampered with;
  • the uplink synchronization state determining module is configured to: determine or determine, according to an indication of the base station, an uplink synchronization state of the terminal in the secondary serving cell;
  • the downlink synchronization state determining module is configured to: determine or determine, according to an indication of the base station, a downlink synchronization state of the terminal in the secondary serving cell.
  • the packet state obtaining module is configured to learn that a packet belonging to a secondary serving cell is modified by:
  • the packet state obtaining module receives a packet modification message sent by the base station, and learns, by using the packet modification message, a packet to which the secondary serving cell belongs.
  • the terminal further includes: an activation state holding module, where:
  • the activation state maintaining module is configured to: after the packet state obtaining module learns that the packet to which the secondary serving cell belongs is modified, maintain an active state of the secondary serving cell.
  • the uplink synchronization state determining module is configured to determine or determine the uplink synchronization state of the terminal in the secondary serving cell according to the indication of the base station in the following manner:
  • the uplink synchronization status of the terminal in the secondary serving cell is out of synchronization.
  • the downlink synchronization state determining module is configured to use the following manner according to the indication of the base station Determining or determining the downlink synchronization status of the terminal in the secondary serving cell:
  • the uplink synchronization state determining module is configured to use the secondary service state according to the following manner:
  • the uplink synchronization status of the packet to which the secondary serving cell belongs is out of synchronization, it is determined that the uplink synchronization state of the terminal in the secondary serving cell is out of synchronization.
  • Embodiment 1 is a flow chart of Embodiment 1 of the present invention.
  • Embodiment 2 is a flowchart of Embodiment 2 of the present invention.
  • Embodiment 3 is a flowchart of Embodiment 3 of the present invention.
  • FIG. 4 is a schematic structural diagram of a terminal according to Embodiment 4 of the present invention.
  • the terminal determines or decides the uplink synchronization state of the terminal in the secondary serving cell according to the indication of the base station, determines or decides according to the instruction of the base station, the terminal is in the auxiliary.
  • the downlink synchronization status of the serving cell is in the auxiliary.
  • the terminal keeps the auxiliary service small after learning that the group to which the secondary service cell belongs is modified.
  • the activation status of the zone That is, the packet change does not affect the change of the activation state, so that the uplink synchronization acquisition time is acquired later (the time for activating the secondary serving cell by the MAC CE is saved)
  • the secondary serving cell can be activated and deactivated. If the secondary serving cell is in the deactivated state, the modified packet has little effect on the uplink and downlink data transmission and reception, because currently there is no uplink and downlink data transmission and reception in the serving cell. If the secondary serving cell is in the active state and has normal uplink and downlink data transmission and reception, the modification of the packet may cause the uplink synchronization state to change, which may result in service interruption. Therefore, the uplink data transmission and reception needs to be resumed, that is, the uplink synchronization state is restored, because the secondary service is restored.
  • the cell always performs measurements, so the downlink synchronization state can be maintained at all times without being affected. Therefore, the terminal can determine the downlink synchronization state of the terminal in the secondary serving cell by itself. In addition, the terminal may also determine the downlink synchronization state of the terminal in the secondary serving cell according to the indication of the base station.
  • the initial uplink synchronization of the secondary serving cell needs to be obtained by acquiring the TA of the current serving cell, and the secondary serving cell needs to be activated before the TA of the current serving cell can be obtained. Therefore, the uplink data transmission and reception needs to consider two factors simultaneously, the activation state and the uplink synchronization. status.
  • the base station may notify the terminal of the new packet or notify the uplink synchronization state to be synchronous or out of synchronization at other times, or the terminal may judge according to the new packet, or the terminal of the secondary serving cell changes, and the terminal enters the uplink loss by itself. Step state, waiting for further indication from the base station.
  • the terminal or the base station can determine that the downlink synchronization state is synchronous, or the base station notifies due to other needs. The terminal goes down to the out-of-synchronization state.
  • the new packet is an already existing packet
  • the uplink synchronization state of the existing packet is continued to be used (if the uplink synchronization state of the already existing packet is If the out-of-synchronization is performed, the secondary serving cell cannot perform uplink data transmission and reception. If the uplink synchronization state of the existing packet is synchronous, the secondary serving cell can immediately perform uplink data transmission and reception.
  • the new packet is new, If it is increased, the default uplink synchronization state is out of synchronization, waiting for further indication from the base station.
  • the base station 1 is a base station having carrier aggregation capability.
  • Base station 1 governs three cells, Celll, Cell2, and Cell3. Some or all of the three cells may provide carrier aggregation capabilities to the user equipment to extend the bandwidth of the transmission.
  • the user equipment UE1 accesses the network through the Celll of the base station 1 (or the network switches the UE to the Celll of the base station 1), and the Celll provides the UE1 with non-access stratum (NAS) mobility information such as a public land mobile network (PLMN), a global cell.
  • NAS non-access stratum
  • PLMN public land mobile network
  • the information identifying the CGI, the location area identifier TAC, and the like is the primary cell (or primary serving cell) of the UE1, and the UE1 only receives the system message and the paging message of the primary cell.
  • the current Pcell is group 0, and the subsequent base station 1 configures Cell2 as the secondary serving cell according to the capability of UE1.
  • the serving cell identifier of Cell2 is 1 and belongs to group 1. After Cell2 is activated, the initial TA is obtained, and the uplink synchronization state is entered.
  • Celll, Cell2 is a normal cell, and Cell3 is configured with a repeater.
  • the cell IDs of Celll, Cell2, and Cell3 are 0, 1, and 2, respectively.
  • the three cells are frequency division duplex (FDD).
  • FDD frequency division duplex
  • TDD time division duplex
  • the base station 1 configures Cell3 as the auxiliary month service cell according to the capability of the UE1, and the cell 3 has the service cell identifier of 2, and belongs to the group 2, and immediately performs downlink synchronization, as shown in FIG. :
  • Step 110 The base station 1 activates Cell3 by sending a MAC layer control element (MAC CE, MAC Control Element), and UE1 obtains an initial TA on Cell3 through a random access procedure or other process, and UE1 enters an uplink synchronization state at Cell3, and starts normal operation.
  • MAC CE MAC layer control element
  • UE1 obtains an initial TA on Cell3 through a random access procedure or other process, and UE1 enters an uplink synchronization state at Cell3, and starts normal operation.
  • Step 120 The base station 1 decides to change the packet of Cell3 to group 1 according to the uplink signals sent by Cell3, Cell2, and Celll, that is, Cell3 and Cell2 belong to the same group, and tamper with the message notification by grouping ⁇ ' UE1 packet modification result;
  • Step 130 After receiving the packet modification message, UE1 determines that the downlink synchronization state in Cell3 is synchronous, and according to the uplink synchronization state of the adjusted packet (in this case, group 1) (this is synchronization) Policy in the uplink synchronization state of Cell3;
  • UE1 can maintain the activation state of Cell3 after receiving the packet modification message.
  • UE1 After UE1 enters the downlink synchronization state, it can perform downlink data transmission and reception on Cell3.
  • the UE1 determines the uplink synchronization state in the Cell3 according to the uplink synchronization state of the adjusted packet, including: If the group 1 is in the synchronization state, the UE1 determines that the new uplink synchronization state is synchronous, that is, the UE1 can perform uplink data transmission in the Cell3 (including receiving And if the group 1 is in the non-synchronized state, the UE1 determines that the new uplink synchronization state is out-of-synchronization (or non-synchronization), that is, the UE1 cannot transmit the uplink data in the Cell3.
  • the UE1 determines the downlink synchronization state of the secondary cell of the modified packet, and determines the uplink synchronization state of the secondary cell of the modified packet according to the uplink synchronization state of the modified packet.
  • Step 140 When the terminal moves to the coverage of the repeater in Cell3, the base station 1 decides to modify the packet of Cell3 to 2 according to the uplink signals sent by Cell3, Cell2, and Celll, that is, Cell3 and Cell2 are classified into different groups, and at the same time, by group ⁇ 'tamper message informs UE1 group ⁇ ⁇ ' tampering result;
  • Step 150 After receiving the packet modification message, UE1 keeps the activation state of Cell3, determines that the downlink synchronization state of Cell3 is synchronous, and can continue to perform downlink data transmission and reception in Cell3, and according to the adjusted packet (in this case, group 2) Uplink synchronization state (because it is a new group, initially non-synchronous) decides the uplink synchronization state in Cell3;
  • the UE1 determines that the uplink synchronization state of the cell 3 is out of synchronization, and stops the uplink data transmission and reception at the cell 3.
  • Step 160 The base station 1 notifies the UE1 to acquire the initial TA of the Cell3. After the UE1 obtains the initial TA of the Cell3, the UE1 enters the uplink synchronization state in the Cell3, and starts to perform uplink data transmission and reception in the Cell3.
  • steps 140-160 are after steps 110-130, steps 140-160 are not necessarily logically associated with steps 110-130, and in other embodiments, only steps 110-130 may be included, or only steps 140-160 may be included. .
  • Embodiment 2 The base station 1 configures Cell3 as the auxiliary month service cell according to the capability of the UE1, and the cell 3 has the serving cell identifier of 2, and belongs to the group 2, and immediately performs downlink synchronization, as shown in FIG. 2, including :
  • Step 210 The base station 1 activates the Cell3 by sending the MAC CE, and the UE1 obtains the initial TA on the Cell3 through the random access process or other processes, and the UE enters the uplink synchronization state in the Cell3, and starts normal uplink and downlink data transmission and reception;
  • Step 220 The base station 1 decides to modify the packet of Cell3 to be group 1 according to the uplink signals sent by Cell3, Cell2, and Celll, that is, Cell3 and Cell2 are classified into the same packet, and notify the UE1 of the packet modification result by the subscription modification message, and notify The following information of UE1:
  • the uplink synchronization state of UE1 in Cell3 is synchronous, and uplink data transmission and reception can be performed;
  • the UE does not need to make its own decision on the uplink synchronization state of the cell (Cell3) of the modified packet, but is configured and notified by the base station.
  • Step 230 After receiving the packet modification message, UE1 maintains the activation state of Cell3, performs uplink data transmission and reception in Cell3 according to the notification of the base station, and determines that the downlink synchronization state in Cell3 is synchronous, that is, downlink data transmission and reception can also be performed in Cell3;
  • UE1 cannot perform uplink data transmission and reception in Cell3, and only performs downlink data transmission and reception.
  • the configuration may be configured and notified by the base station.
  • the base station may notify UE1 that: when the downlink synchronization state of Cell3 is out of synchronization, UE1 maintains the active state of Cell3 after receiving it, but stops downlink data transmission and reception at Cell3.
  • Step 240 When the terminal moves to the coverage of the repeater in Cell3, the base station 1 decides to modify the packet of Cell3 to group 2 according to the uplink signals sent by Cell3, Cell2, and Celll, that is, Cell3 and Cell2 belong to different groups, and at the same time pass the grouping.
  • Step 250 After receiving the packet modification message, UE1 maintains the activation state of Cell3, according to the base station. The notification stops the uplink data transmission and reception performed by Cell3, and determines that the downlink synchronization state in Cell3 is synchronous, and continues to perform downlink data transmission and reception in Cell3;
  • Step 260 The base station 1 notifies the UE1 to acquire the initial TA of the Cell3. After the UE1 obtains the initial TA of the Cell3, the UE1 enters the uplink synchronization state in the Cell3, and starts to perform uplink data transmission and reception in the Cell3.
  • the base station may also notify the UE1 that the downlink synchronization state of the Cell3 is synchronous, and after receiving the terminal, the downlink data transmission and reception of the Cell3 is started.
  • Steps 240-260 are not necessarily logically associated with steps 210-230, and in other embodiments, may include only steps 210-230, or only steps 240-260.
  • the base station 1 configures Cell3 as the auxiliary month service cell according to the capability of the UE1, and the cell 3 has the service cell identifier of 2, and belongs to the group 2, and immediately performs downlink synchronization, as shown in FIG. 3, including :
  • Step 310 The base station 1 activates the Cell3 by sending the MAC CE, and the UE1 obtains the initial TA on the Cell3 through the random access procedure or other process, and the UE enters the uplink synchronization state in the Cell3, and starts normal uplink and downlink data transmission and reception;
  • Step 320 The base station 1 determines, according to the uplink signals sent by Cell3, Cell2, and Cell1, that the packet of Cell3 is modified into group 1, that is, Cell3 and Cell2 are classified into the same packet, and UE1 is notified of the packet modification result;
  • Step 330 After receiving the packet modification message, the UE1 keeps the activation state of the Cell3. Since the UE does not receive the notification of the base station, the UE1 defaults to the uplink synchronization state of the Cell3 as the out-of-synchronization state, but the UE1 determines its downlink synchronization state in the Cell3 by itself. For synchronization;
  • the base station 1 If the base station 1 has not notified UE1, the UE cannot perform uplink data transmission and reception at Cell3.
  • the downlink synchronization state of the UE is determined by the UE, and the uplink synchronization state of the UE is configured by the base station in a default manner, that is, if the base station does not notify the UE that uplink data transmission and reception is possible, the uplink data transmission and reception cannot be performed by default.
  • Step 340 The terminal moves to the coverage of the repeater in Cell3, and the base station 1 decides to modify the packet of Cell3 to be group 2 according to the uplink signals sent by Cell3, Cell2, and Celll, that is, Cell3 and Cell2 belong to different groups, and notify the UE1 packet. Modify the result;
  • Step 350 After receiving the packet modification message, UE1 maintains the activation state of Cell3, while keeping its uplink synchronization state in Cell3 out of synchronization, and the downlink synchronization state is synchronization;
  • Step 360 The base station 1 notifies the UE1 to acquire the initial TA of the Cell3. After acquiring the initial TA of the Cell3, the UE1 enters the uplink synchronization state and starts to perform uplink data transmission and reception in the Cell3.
  • Steps 340-360 are not necessarily logically associated with steps 310-330, i.e., in other embodiments, only steps 310-330 may be included, or only steps 340-360 may be included.
  • the terminal includes a packet state acquiring module, an uplink synchronization state determining module, and a downlink synchronization state determining module, where: the packet state acquiring module is configured to: The terminal learns that the group to which the secondary service cell belongs is modified;
  • the uplink synchronization state determining module is configured to: determine or determine, according to an indication of the base station, an uplink synchronization state of the terminal in the secondary serving cell;
  • the downlink synchronization state determining module is configured to: determine or determine, according to an indication of the base station, a downlink synchronization state of the terminal in the secondary serving cell.
  • the packet state obtaining module is configured to learn that a packet belonging to a secondary serving cell is modified by: the packet state obtaining module receives a packet modification message sent by the base station, and obtains, by using a packet modification message, a packet to which the secondary serving cell belongs.
  • the terminal further includes: an activation state maintaining module, configured to: after the packet state obtaining module learns that a packet to which the secondary serving cell belongs is modified, maintaining an activation state of the secondary serving cell.
  • an activation state maintaining module configured to: after the packet state obtaining module learns that a packet to which the secondary serving cell belongs is modified, maintaining an activation state of the secondary serving cell.
  • the uplink synchronization state determining module is configured to determine or determine the uplink synchronization state of the terminal in the secondary serving cell according to the indication of the base station in the following manner: Determining, by the notification message sent by the base station, that the uplink synchronization status of the terminal in the secondary serving cell is synchronized; or
  • the uplink synchronization status of the terminal in the secondary serving cell is out of synchronization.
  • the downlink synchronization state determining module is configured to determine or determine the downlink synchronization state of the terminal in the secondary serving cell according to the indication of the base station in the following manner:
  • the uplink synchronization state determining module is configured to determine, according to an uplink synchronization state of the packet to which the secondary serving cell belongs, the uplink synchronization state of the terminal in the secondary serving cell in the following manner:
  • the uplink synchronization status of the packet to which the secondary serving cell belongs is synchronous, determining that the uplink synchronization status of the secondary serving cell in the secondary serving cell is synchronous;
  • the uplink synchronization status of the packet to which the secondary serving cell belongs is out of synchronization, it is determined that the uplink synchronization state of the secondary serving cell in the secondary serving cell is out of synchronization.
  • the present invention has strong industrial applicability.

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Abstract

一种辅服务小区分组修改方法和终端,所述方法包括:终端在获知某辅服务小区所属分组被修改后,根据基站的指示确定或者自行决定本终端在该辅服务小区的上行同步状态,根据基站的指示确定或者自行决定本终端在该辅服务小区的下行同步状态。所述终端包括分组状态获取模块、上行同步状态确定模块和下行同步状态确定模块。采用上述技术方案,使得在辅服务小区分组改变之后,尽量避免业务中断,或者即便业务中断,也可以及时恢复正常上下行数据收发,减少对业务的影响。

Description

辅服务小区分组修改方法和终端
技术领域
本发明涉及无线通信领域, 具体涉及辅服务小区分组修改方法和终端。
背景技术
长期演进系统( LTE , Long Term Evolution ) 中, 处于连接态的用户设备 ( UE )给基站发送数据前, 需要获得与基站的上行同步和下行同步。 当 UE 对某个小区执行过测量则说明已经取得与该小区的下行同步, 否则需要执行 类似小区搜索的过程。 上行同步是通过执行随机接入过程来获取的, 同时获 取到发送时间提前量(TA, Time Advance ) , ΤΑ主要是 UE用来确定发送数 据时刻用的, UE获取上行同步后,启动上行同步定时器( TAT, time Alignment Timer ) , 若 UE能在 TAT超时之前接收到基站发送给 UE的时间提前量调整 信息, 则认为该 UE与该基站之间保持了上行同步, 否则 TAT超时, UE认 为失去上行同步, 失去上行同步后如果还需要给基站发送数据, 则需要重新 获取上行同步。 由于 LTE系统中小区只有一个载波, 因此只有一个 TA。
为向移动用户提供更高的数据速率, 高级长期演进系统(LTE-A, Long Term Evolution Advance )提出了载波聚合技术 ( CA, Carrier Aggregation ) , 其目的是为具有相应能力的 UE提供更大宽带, 提高 UE的峰值速率。 LTE 中, 系统支持的最大下行传输带宽为 20MHz, 载波聚合是将两个或者更多的 分量载波(CC, Component Carriers )聚合起来支持大于 20MHz, 最大不超 过 100MHz的传输带宽, 载波聚合初期阶段上行( UL ) CC的总数配置小于 等于下行(DL ) CC的总数配置。 具有载波聚合能力的 LTE-A UE, 可以同 时在多个分量载波上收发数据, 以下涉及的 UE除了特别说明都是此类 UE。
LTE-A系统中, UE进入连接态后可以同时通过多个分量载波(如 CC1 , CC2 ) 与源基站进行通信, 基站会通过显式的配置或者按照协议约定为 UE指定一 个主分量载波(PCC, Primary Component Carrier ) , 其他的分量载波称为辅 分量载波(SCC, Secondary Component Carrier ) , 在 PCC上的服务小区称为 主服务小区( Pcell, Primary Cell ),在 SCC上的服务小区称为辅服务小区( Scell, Secondary Cell ) 。 辅服务小区是在 UE进入连接态后基站配置的。 每个服务 小区都有一个配置的标识, 称为服务小区标识, Pcell的服务小区标识固定为 0。 对于辅服务小区, 除了有服务小区标识外, 还有单独的辅服务小区标识, 辅服务小区的辅服务小区标识跟对应的服务小区标识相同。
载波聚合初期阶段(即 Rel-10 ) , Scell的个数比较少如只有 1个, 而且 场景也有限制, 如不支持上行无线射频拉远(RRH, Remote Radio Head )和 中继器(repeater ) , 因此只存在一个 TA, UE只需要在 Pcell发起上行同步 即可, Scell上不会发起。
载波聚合后续阶段(即 Rel-11 ) , 由于数据量的提升, Scell的个数会增 多, 如增加到 4个, 场景也会放宽如支持上行 RRH和 repeater, —个 TA不 能解决问题, 因此会引入多个 TA。 为了管理方便, 使用相同的 TA的服务小 区归入一个 TA组。 这时候, 包含 Pcell的 TA组只需要按照以前的规则来处 理, 即 Pcell上发起上行同步, 上行同步后, 该组内其他小区自动进入上行同 步状态。 没有包含 Pcell的 TA组, 必须在某个 Scell上发起上行同步, 并且在 该 Scell激活后才执行随机接入过程, 该 Scell必须在上行同步完成后才能进 行正常的上行数据发送, 同样, 该 Scell上行同步后, 该组内其他小区自动进 入上行同步状态。 另外, 主服务小区的分组不能改变, 辅服务小区的分组可 以改变。 辅服务小区分组改变后, 如果处理的不好, 则可能导致业务中断, 甚至中断的时间比较长。 发明内容
本发明要解决的技术问题是提供一种辅服务 d、区分组修改方法和终端, 尽量避免业务中断。
为解决上述技术问题, 本发明釆用如下技术方案:
一种辅服务小区分组修改方法, 包括:
终端在获知某辅服务小区所属分组被修改后, 根据基站的指示确定或者 自行决定本终端在所述辅服务小区的上行同步状态, 根据基站的指示确定或 者自行决定本终端在所述辅服务小区的下行同步状态。 其中, 终端通获知某辅服务小区所属分组被修改的步骤包括: 所述终端接收基站发送的分组修改消息, 通过所述分组修改消息获知所 述辅服务小区当前所属分组。
所述辅服务小区分组修改方法还包括:
在获知某辅服务小区所属分组被修改后, 所述终端保持所述辅服务小区 的激活状态。
其中, 根据基站的指示确定本终端在所述辅服务小区的上行同步状态的 步骤包括:
根据基站发送的通知消息确定本终端在所述辅服务小区的上行同步状态 为同步。
其中, 根据基站的指示确定本终端在所述辅服务小区的下行同步状态的 步骤包括:
根据基站发送的通知消息确定本终端在所述辅服务小区的下行同步状态 为同步或失步。
其中: 所述通知消息为分组修改消息。
其中, 终端自行决定本终端在所述辅服务小区的上行同步状态的步骤包 括:
所述终端根据所述辅服务小区当前所属分组的上行同步状态确定本终端 在所述辅服务小区的上行同步状态。
其中, 所述终端根据所述辅服务小区当前所属分组的上行同步状态确定 本终端在所述辅服务小区的上行同步状态的步骤包括:
如果所述辅服务小区当前所属分组的上行同步状态为同步, 则确定本终 端在所述辅服务小区的上行同步状态为同步;
如果所述辅服务小区当前所属分组的上行同步状态为失步, 则确定本终 端在所述辅服务小区的上行同步状态为失步。
其中, 终端自行决定本终端在所述辅服务小区的下行同步状态的步骤包 括: 所述终端确定本终端在所述辅服务小区的下行同步状态为同步。
其中, 所述终端自行决定本终端在所述辅服务小区的上行同步状态的步 骤包括:
所述终端默认本终端在所述辅服务小区的上行同步状态为失步。
一种实现辅服务小区分组修改的终端, 包括分组状态获取模块, 上行同 步状态确定模块和下行同步状态确定模块, 其中:
所述分组状态获取模块设置成: 使得所述终端获知某辅服务小区所属分 组被爹改;
所述上行同步状态确定模块设置成: 根据基站的指示确定或者自行决定 本终端在所述辅服务小区的上行同步状态;
所述下行同步状态确定模块设置成: 根据基站的指示确定或者自行决定 本终端在所述辅服务小区的下行同步状态。
其中: 所述分组状态获取模块设置成通过以下方式获知某辅服务小区所 属分组被修改:
所述分组状态获取模块接收基站发送的分组修改消息, 通过所述分组修 改消息获知所述辅服务小区当前所属分组。
所述终端还包括: 激活状态保持模块, 其中:
所述激活状态保持模块设置成: 在所述分组状态获取模块获知所述辅服 务小区所属分组被修改后, 保持所述辅服务小区的激活状态。
其中, 所述上行同步状态确定模块设置成釆用以下方式根据基站的指示 确定或者自行决定本终端在所述辅服务小区的上行同步状态:
根据基站发送的通知消息确定本终端在该辅服务小区的上行同步状态为 同步; 或者,
根据所述辅服务小区当前所属分组的上行同步状态确定本终端在所述辅 服务小区的上行同步状态; 或者,
默认本终端在该辅服务小区的上行同步状态为失步。
其中, 所述下行同步状态确定模块设置成釆用以下方式根据基站的指示 确定或者自行决定本终端在所述辅服务小区的下行同步状态:
根据基站发送的通知消息确定本终端在该辅服务小区的下行同步状态为 同步或失步; 或者,
确定本终端在所述辅服务小区的下行同步状态为同步。
其中, 所述上行同步状态确定模块设置成釆用以下方式根据所述辅服务 状态:
如果所述辅服务小区当前所属分组的上行同步状态为同步, 则确定本终 端在所述辅服务小区的上行同步状态为同步;
如果所述辅服务小区当前所属分组的上行同步状态为失步, 则确定本终 端在所述辅服务小区的上行同步状态为失步。
釆用上述技术方案, 能够使得在辅服务小区分组改变之后, 尽量避免业 务中断, 或者即便业务中断, 也可以及时恢复正常上下行数据收发, 减少对 业务的影响。 附图概述
图 1为本发明实施例一的流程图;
图 2为本发明实施例二的流程图;
图 3为本发明实施例三的流程图;
图 4为本发明实施例四的终端结构示意图。
本发明的较佳实施方式
在本文中, 终端在获知某辅服务小区所属分组被修改后, 根据基站的指 示确定或者自行决定本终端在该辅服务小区的上行同步状态, 根据基站的指 示确定或者自行决定本终端在该辅服务小区的下行同步状态。
优选地, 终端在获知某辅服务小区所属分组被修改后, 保持该辅服务小 区的激活状态。 即分组改变不影响激活状态的改变, 使得之后获取上行同步 争取时间 (节约了通过 MAC CE激活辅服务小区的时间)
辅服务小区可以进行激活和去激活, 如果辅服务小区处于去激活状态, 修改分组对上下行数据收发的影响不大, 因为当前该服务小区没有上下行数 据收发。 如果辅服务小区处于激活状态并且有正常的上下行数据收发, 修改 分组会引起上行同步状态的改变, 有可能会导致业务中断, 因此需要恢复上 行数据收发, 即恢复上行同步状态, 由于该辅服务小区一直进行测量, 因此 下行同步状态可以一直保持, 不受影响。 因此, 终端可以自行决定本终端在 该辅服务小区的下行同步状态。 此外, 终端也可以根据基站的指示来确定本 终端在该辅服务小区的下行同步状态。
辅服务小区初始上行同步需要通过获取当前服务小区的 TA来获得, 而 辅服务小区需要先激活才能获取当前服务小区的 TA, 因此, 恢复上行数据收 发需要同时考虑两个因素, 激活状态和上行同步状态。
辅服务小区分组改变后, 之前的上行同步状态需要丟弃, 新的上行同步 状态需要根据新的分组来确定。 例如可以是基站通知终端新分组的同时或者 在其他需要的时候通知上行同步状态为同步或失步, 或者终端自行根据新的 分组来判断, 或者辅服务小区的分组改变之后, 终端自行进入上行失步状态, 等待基站的进一步指示。 如前所述, 由于该辅服务小区一直进行测量, 因此下行同步状态可以一 直保持, 不受影响, 因此对于下行同步状态, 终端或基站可以确定下形同步 状态为同步, 或者基站由于其他需要通知终端下行进入失步状态。
如果是根据新的分组来判断, 则有两方面, 一方面, 如果新的分组是已 经存在的分组, 则继续釆用已经存在的分组的上行同步状态 (如果已经存在 的分组的上行同步状态为失步, 则该辅服务小区也不能进行上行数据收发, 如果已经存在的分组的上行同步状态为同步, 则该辅服务小区可以立刻进行 上行数据收发) , 另一方面, 如果新的分组是新增的, 则默认上行同步状态 为失步, 等待基站的进一步指示。 为使本发明的目的、 技术方案和优点更加清楚明白, 下文中将结合附图 对本发明的实施例进行详细说明。 需要说明的是, 在不冲突的情况下, 本申 请中的实施例及实施例中的特征可以相互任意组合。 这些组合均在本发明的 保护范围内。
在 LTE-A系统中 , 基站 1是具有载波聚合能力的基站。 基站 1管辖了 3 个小区, 分别是 Celll、 Cell2、 Cell3。 这 3个小区中的部分或全部可以向用户 设备提供载波聚合的能力以扩展传输的带宽。 用户设备 UE1 通过基站 1 的 Celll接入了网络(或者网络将 UE切换到基站 1的 Celll ) , Celll为 UE1提 供非接入层 (NAS )移动性信息如公共陆地移动网络(PLMN ) 、 全局小区 标识 CGI、 位置区标识 TAC等信息, 是 UE1的主小区 (或称主服务小区) , UE1只接收主小区的系统消息和寻呼消息。 默认当前 Pcell为组 0, 后续基站 1根据 UE1的能力为其配置了 Cell2作为辅服务小区, Cell2的服务小区标识 是 1 , 归入组 1 , Cell2激活后获取到初始 TA, 进入上行同步状态。
Celll , Cell2是普通的小区, Cell3配置了 repeater。 Celll、 Cell2、 Cell3 的服务小区标识分别是 0 , 1 , 2。在以下实施例中这三个小区是频分双工( FDD ) 的, 对于时分双工 (TDD ) 的小区, 流程相同, 不再赘述。
实施例一
由于业务量的增加, 基站 1根据 UE1的能力又为其配置了 Cell3作为辅 月良务小区, Cell3的服务小区标识是 2, 归入组 2, 立刻进行下行同步, 如图 1 所示, 包括:
步骤 110: 基站 1通过发送 MAC层控制信元(MAC CE, MAC Control Element )激活 Cell3 , UE1通过随机接入过程或其他过程获取 Cell3上的初始 TA, UE1在 Cell3进入上行同步状态, 开始正常上下行数据收发;
步骤 120:基站 1根据 Cell3、 Cell2和 Celll发送的上行信号,决定将 Cell3 的分组 ^ί'爹改为组 1 , 即 Cell3和 Cell2归入同一个分组, 同时通过分组 ^ί'爹改消 息通知 UE1分组修改结果;
步骤 130: UE1收到分组修改消息后, 确定在 Cell3的下行同步状态为同 步, 并根据调整后的分组(此时为组 1 ) 的上行同步状态 (此时为同步) 决 策在 Cell3的上行同步状态;
为了节约上行同步时间, UE1 收到分组修改消息后, 可以保持 Cell3 的 激活状态。
UE1 自行进入下行同步状态后, 可以在 Cell3进行下行数据收发。
UE1根据调整后的分组的上行同步状态决策在 Cell3 的上行同步状态, 包括: 如果组 1 处于同步状态, 则 UE1 确定新的上行同步状态为同步, 即 UE1可以在 Cell3进行上行数据传输(包括接收和发送 ); 如果组 1处于非同 步状态, 则 UE1确定新的上行同步状态为失步(或称非同步), 即 UE1无法 在 Cell3的上行数据传输。
在本实施例中, 由 UE1决策被修改分组的辅小区的下行同步状态, 并根 据修改后分组的上行同步状态决策该被修改分组的辅小区的上行同步状态。
步骤 140:当终端移动到 Cell3中 repeater的覆盖范围,基站 1根据 Cell3、 Cell2和 Celll发送的上行信号,决定将 Cell3的分组修改为 2,即 Cell3和 Cell2 归入不同的组, 同时通过分组^ ί'爹改消息通知 UE1分组^ ί'爹改结果;
步骤 150: UE1 收到分组修改消息后, 保持 Cell3 的激活状态, 确定在 Cell3的下行同步状态为同步, 可继续在 Cell3进行下行数据收发, 并根据调 整后的分组(此时为组 2 ) 的上行同步状态 (由于是新组, 初始为非同步) 决策在 Cell3的上行同步状态;
由于组 2处于非同步状态, 因此 UE1确定在 Cell3的上行同步状态为失 步, 停止在 Cell3进行上行数据收发。
步骤 160: 基站 1通知 UE1获取 Cell3的初始 TA, UE1获取 Cell3的初 始 TA后, UE1在 Cell3进入上行同步状态,开始在 Cell3进行上行数据收发。
虽然上述步骤 140-160 在步骤 110-130之后, 但步骤 140-160 与步骤 110-130无必然逻辑联系, 且在其他实施例中, 可仅包括步骤 110-130, 或者 仅包括步骤 140-160。
实施例二 由于业务量的增加, 基站 1根据 UE1的能力又为其配置了 Cell3作为辅 月良务小区, Cell3的服务小区标识是 2, 归入组 2, 立刻进行下行同步, 如图 2 所示, 包括:
步骤 210: 基站 1通过发送 MAC CE激活 Cell3 , UEl通过随机接入过程 或其他过程获取 Cell3上的初始 TA, UE在 Cell3进入上行同步状态, 开始正 常上下行数据收发;
步骤 220:基站 1根据 Cell3、 Cell2和 Celll发送的上行信号,决定将 Cell3 的分组修改为组 1 , 即 Cell3和 Cell2归入同一个分组, 同时通过分许修改消 息通知 UE1分组修改结果, 并且通知 UE1以下信息: UE1在 Cell3的上行同 步状态为同步, 可以进行上行数据收发;
在本实施例中, UE无需自行决策在被修改分组的小区 (Cell3 ) 的上行 同步状态, 而是由基站进行配置、 通知。
步骤 230: UE1收到分组修改消息后, 保持 Cell3的激活状态, 根据基站 的通知在 Cell3进行上行数据收发,同时确定在 Cell3的下行同步状态为同步, 即也可在 Cell3进行下行数据收发;
此时如果在步骤 220中基站 1通知 UE1在 Cell3的上行同步状态为失步, 则 UE1不能在 Cell3进行上行数据收发, 只进行下行数据收发。
虽然在本实施例中 UE在 Cell3的下行同步状态仍然由 UE自行决定, 但 在其他实施例中, 也可以由基站进行配置、 通知。 例如, 基站可以通知 UE1 : 在 Cell3的下行同步状态为失步, 则 UE1收到后, 保持 Cell3的激活状态, 但 停止在 Cell3的下行数据收发。
步骤 240:当终端移动到 Cell3中 repeater的覆盖范围,基站 1根据 Cell3、 Cell2和 Celll发送的上行信号, 决定将 Cell3的分组修改为组 2, 即 Cell3和 Cell2归入不同的组, 同时通过分组^ ί'爹改消息通知 UE1分组^ ί'爹改结果,并且通 知 UE1以下信息: UE1在 Cell3的上行同步状态为失步, 即不可以进行上行 数据收发;
步骤 250: UE1收到分组修改消息后, 保持 Cell3的激活状态, 根据基站 的通知停止在 Cell3进行的上行数据收发, 同时确定在 Cell3的下行同步状态 为同步, 继续在 Cell3进行下行数据收发;
此时如果 Cell3已经去激活, 则保持 Cell3的去激活状态。
步骤 260: 基站 1通知 UE1获取 Cell3的初始 TA, UE1获取 Cell3的初 始 TA后, UE1在 Cell3进入上行同步状态,开始在 Cell3进行上行数据收发。
基站也可以通知 UE1 , 其在 Cell3的下行同步状态为同步, 终端收到后, 开始 Cell3的下行数据收发。
步骤 240-260与步骤 210-230无必然逻辑联系,且在其他实施例中,可仅 包括步骤 210-230, 或者仅包括步骤 240-260。
实施例三
由于业务量的增加, 基站 1根据 UE1的能力又为其配置了 Cell3作为辅 月良务小区, Cell3的服务小区标识是 2, 归入组 2, 立刻进行下行同步, 如图 3 所示, 包括:
步骤 310: 基站 1通过发送 MAC CE激活 Cell3 , UE1通过随机接入过程 或其他过程获取 Cell3上的初始 TA, UE在 Cell3进入上行同步状态, 开始正 常上下行数据收发;
步骤 320:基站 1根据 Cell3、 Cell2和 Celll发送的上行信号,决定将 Cell3 的分组修改为组 1 , 即 Cell3和 Cell2归入同一个分组, 同时通知 UE1分组修 改结果;
步骤 330: UE1收到分组修改消息后, 保持 Cell3的激活状态, 由于没有 接收到基站的通知, 则 UE1默认其在 Cell3的上行同步状态为失步, 但 UE1 自行确定其在 Cell3的下行同步状态为同步;
如果基站 1一直没有通知 UE1 ,因此 UE在 Cell3—直不能进行上行数据 收发。
在本实施例中, UE的下行同步状态由 UE自行决定, 而 UE的上行同步 状态由基站釆用默认方式配置, 即如果基站不通知 UE可以进行上行数据收 发, 则默认为不能进行上行数据收发。 步骤 340: 终端移动到 Cell3中 repeater的覆盖范围, 基站 1根据 Cell3、 Cell2和 Celll发送的上行信号, 决定将 Cell3的分组修改为组 2, 即 Cell3和 Cell2归入不同的组, 同时通知 UE1分组修改结果;
步骤 350: UE1收到分组修改消息后, 保持 Cell3的激活状态, 同时保持 其在 Cell3的上行同步状态为失步, 下行同步状态为同步;
步骤 360: 基站 1通知 UE1获取 Cell3的初始 TA, UE1获取 Cell3的初 始 TA后, 进入上行同步状态, 开始在 Cell3进行上行数据收发。
步骤 340-360与步骤 310-330无必然逻辑联系, 即在其他实施例中,可仅 包括步骤 310-330, 或者仅包括步骤 340-360。
实施例四
本实施例提供一种实现上述方法的终端, 如图 4所示, 该终端包括分组 状态获取模块, 上行同步状态确定模块和下行同步状态确定模块, 其中: 所述分组状态获取模块设置成: 使得终端获知某辅服务小区所属分组被 修改;
所述上行同步状态确定模块设置成: 根据基站的指示确定或者自行决定 本终端在该辅服务小区的上行同步状态;
所述下行同步状态确定模块设置成: 根据基站的指示确定或者自行决定 本终端在该辅服务小区的下行同步状态。
优选地, 该分组状态获取模块设置成通过以下方式获知某辅服务小区所 属分组被修改: 分组状态获取模块接收基站发送的分组修改消息, 通过分组 修改消息获知所述辅服务小区当前所属分组。
优选地, 该终端还包括: 激活状态保持模块, 其设置成: 在所述分组状 态获取模块获知某辅服务小区所属分组被修改后, 保持该辅服务小区的激活 状态。
优选地, 该上行同步状态确定模块设置成釆用以下方式根据基站的指示 确定或者自行决定本终端在该辅服务小区的上行同步状态: 根据基站发送的通知消息确定本终端在该辅服务小区的上行同步状态为 同步; 或者,
根据该辅服务小区当前所属分组的上行同步状态确定本终端在该辅服务 小区的上行同步状态; 或者,
默认本终端在该辅服务小区的上行同步状态为失步。
优选地, 该下行同步状态确定模块设置成釆用以下方式根据基站的指示 确定或者自行决定本终端在该辅服务小区的下行同步状态:
根据基站发送的通知消息确定本终端在该辅服务小区的下行同步状态为 同步或失步; 或者,
确定本终端在所述辅服务小区的下行同步状态为同步。
优选地, 该上行同步状态确定模块设置成釆用以下方式根据所述辅服务 小区当前所属分组的上行同步状态确定本终端在该辅服务小区的上行同步状 态:
如果辅服务小区当前所属分组的上行同步状态为同步, 则确定本终端在 该辅服务小区的上行同步状态为同步;
如果辅服务小区当前所属分组的上行同步状态为失步, 则确定本终端在 该辅服务小区的上行同步状态为失步。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成, 所述程序可以存储于计算机可读存储介质中, 如只读 存储器、 磁盘或光盘等。 可选地, 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地, 上述实施例中的各模块 /单元可以釆用 硬件的形式实现, 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。
当然, 本发明还可有其他多种实施例, 在不背离本发明精神及其实质的 但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。 工业实用性
釆用上述技术方案, 能够使得在辅服务小区分组改变之后, 尽量避免业 务中断, 或者即便业务中断, 也可以及时恢复正常上下行数据收发, 减少对 业务的影响。 因此本发明具有很强的工业实用性。

Claims

权 利 要 求 书
1、 一种辅服务小区分组修改方法, 包括:
终端在获知某辅服务小区所属分组被修改后, 根据基站的指示确定或者 自行决定本终端在所述辅服务小区的上行同步状态, 根据基站的指示确定或 者自行决定本终端在所述辅服务小区的下行同步状态。
2、 如权利要求 1所述的辅服务小区分组修改方法, 其中, 终端通获知某 辅服务小区所属分组被修改的步骤包括:
所述终端接收基站发送的分组修改消息, 通过所述分组修改消息获知所 述辅服务小区当前所属分组。
3、如权利要求 1所述的辅服务小区分组修改方法, 所述辅服务小区分组 修改方法还包括:
在获知某辅服务小区所属分组被修改后, 所述终端保持所述辅服务小区 的激活状态。
4、 如权利要求 1所述的辅服务小区分组修改方法, 其中, 根据基站的指 示确定本终端在所述辅服务小区的上行同步状态的步骤包括:
根据基站发送的通知消息确定本终端在所述辅服务小区的上行同步状态 为同步。
5、 如权利要求 1所述的辅服务小区分组修改方法, 其中, 根据基站的指 示确定本终端在所述辅服务小区的下行同步状态的步骤包括:
根据基站发送的通知消息确定本终端在所述辅服务小区的下行同步状态 为同步或失步。
6、 如权利要求 4或 5所述的辅服务小区分组修改方法, 其中: 所述通知消息为分组修改消息。
7、 如权利要求 1所述的辅服务小区分组修改方法, 其中, 终端自行决定 本终端在所述辅服务小区的上行同步状态的步骤包括:
所述终端根据所述辅服务小区当前所属分组的上行同步状态确定本终端 在所述辅服务小区的上行同步状态。
8、 如权利要求 7所述的辅服务小区分组修改方法, 其中, 所述终端根据 的上行同步状态的步骤包括:
如果所述辅服务小区当前所属分组的上行同步状态为同步, 则确定本终 端在所述辅服务小区的上行同步状态为同步;
如果所述辅服务小区当前所属分组的上行同步状态为失步, 则确定本终 端在所述辅服务小区的上行同步状态为失步。
9、 如权利要求 1所述的辅服务小区分组修改方法, 其中, 终端自行决定 本终端在所述辅服务小区的下行同步状态的步骤包括:
所述终端确定本终端在所述辅服务小区的下行同步状态为同步。
10、 如权利要求 1所述的辅服务小区分组修改方法, 其中, 所述终端自 行决定本终端在所述辅服务小区的上行同步状态的步骤包括:
所述终端默认本终端在所述辅服务小区的上行同步状态为失步。
11、 一种实现辅服务小区分组修改的终端, 包括分组状态获取模块, 上 行同步状态确定模块和下行同步状态确定模块, 其中:
所述分组状态获取模块设置成: 使得所述终端获知某辅服务小区所属分 组被爹改;
所述上行同步状态确定模块设置成: 根据基站的指示确定或者自行决定 本终端在所述辅服务小区的上行同步状态;
所述下行同步状态确定模块设置成: 根据基站的指示确定或者自行决定 本终端在所述辅服务小区的下行同步状态。
12、 如权利要求 11所述的终端, 其中: 所述分组状态获取模块设置成通 过以下方式获知某辅服务小区所属分组被修改:
所述分组状态获取模块接收基站发送的分组修改消息, 通过所述分组修 改消息获知所述辅服务小区当前所属分组。
13、 如权利要求 11所述的终端, 所述终端还包括: 激活状态保持模块, 其中: 所述激活状态保持模块设置成: 在所述分组状态获取模块获知所述辅服 务小区所属分组被修改后, 保持所述辅服务小区的激活状态。
14、 如权利要求 11所述的终端, 其中, 所述上行同步状态确定模块设置 成釆用以下方式根据基站的指示确定或者自行决定本终端在所述辅服务小区 的上行同步状态:
根据基站发送的通知消息确定本终端在该辅服务小区的上行同步状态为 同步; 或者,
根据所述辅服务小区当前所属分组的上行同步状态确定本终端在所述辅 服务小区的上行同步状态; 或者,
默认本终端在该辅服务小区的上行同步状态为失步。
15、 如权利要求 11或 14所述的终端, 其中, 所述下行同步状态确定模 块设置成釆用以下方式根据基站的指示确定或者自行决定本终端在所述辅服 务小区的下行同步状态:
根据基站发送的通知消息确定本终端在该辅服务小区的下行同步状态为 同步或失步; 或者,
确定本终端在所述辅服务小区的下行同步状态为同步。
16、 如权利要求 14所述的终端, 其中, 所述上行同步状态确定模块设置 成釆用以下方式根据所述辅服务小区当前所属分组的上行同步状态确定本终 端在所述辅服务小区的上行同步状态:
如果所述辅服务小区当前所属分组的上行同步状态为同步, 则确定本终 端在所述辅服务小区的上行同步状态为同步;
如果所述辅服务小区当前所属分组的上行同步状态为失步, 则确定本终 端在所述辅服务小区的上行同步状态为失步。
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