WO2014176977A1 - 随机接入方法和装置 - Google Patents

随机接入方法和装置 Download PDF

Info

Publication number
WO2014176977A1
WO2014176977A1 PCT/CN2014/075506 CN2014075506W WO2014176977A1 WO 2014176977 A1 WO2014176977 A1 WO 2014176977A1 CN 2014075506 W CN2014075506 W CN 2014075506W WO 2014176977 A1 WO2014176977 A1 WO 2014176977A1
Authority
WO
WIPO (PCT)
Prior art keywords
random access
cell
small cell
terminal
small
Prior art date
Application number
PCT/CN2014/075506
Other languages
English (en)
French (fr)
Inventor
陈中明
黄亚达
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US15/024,503 priority Critical patent/US9986588B2/en
Priority to EP14792059.9A priority patent/EP3035766A4/en
Publication of WO2014176977A1 publication Critical patent/WO2014176977A1/zh

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/001Synchronization between nodes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/19Connection re-establishment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04Large scale networks; Deep hierarchical networks
    • H04W84/042Public Land Mobile systems, e.g. cellular systems
    • H04W84/045Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B

Definitions

  • the present invention relates to the field of mobile communications, and in particular, to a random access method and apparatus for triggering a small cell.
  • the UE in the connected state before the UE in the connected state sends data to the base station, it needs to obtain uplink synchronization and downlink synchronization with the base station.
  • the uplink synchronization is obtained by performing a random access procedure (at the same time, the Time Advance (TA) is obtained).
  • the main purpose of the TA is to determine the time for sending the data. After the UE obtains the uplink synchronization, the uplink is started.
  • the synchronization timer (time alignment timer, or TAT for short), if the UE can receive the time advance sent by the base station to the UE before the TAT expires, the UE is considered to maintain uplink synchronization with the base station, otherwise the TAT times out and the UE considers that the uplink is lost. Synchronization, the terminal simply releases the relevant resources and notifies the RRC layer. After the terminal loses uplink synchronization, if it needs to send data to the base station, it needs to reacquire the uplink synchronization. Since the cell in the LTE system has only one carrier, there is only one TA.
  • TAT time alignment timer
  • the UE performs the random access procedure in the following situations: initial access from idle (IDLE) state, RRC connection reestablishment, handover, downlink (DL, Downlink) data arrival, uplink (UL, Uplink) data arrival and location service
  • the handover and downlink data arrival are performed by receiving an indication from the base station that a random access procedure needs to be performed.
  • the terminal performs radio link failure (RLF) monitoring on the serving cell. If RLF is detected in the serving cell, RRC connection re-establishment is triggered. First, the cell selection process is performed, and then the selected cell is selected. Perform a random access procedure on it.
  • RLF radio link failure
  • the UE can communicate with the source base station through multiple component carriers (such as CC1 and CC2) and enter the primary cell (Pcell), and Secondary Cell (Scell).
  • component carriers such as CC1 and CC2
  • Pcell primary cell
  • Scell Secondary Cell
  • a TA cannot solve the problem, so multiple TAs are introduced.
  • the serving cell using the same TA is classified into one TA group, the TA group including the Pcell is called PTAG, and the TA group not including the Pcell is called STAG.
  • the timing of random access is the same as that of a TA.
  • the only time for the cell to perform random access on the STAG is the network side notification.
  • RLF Radio Link Failure
  • monitoring is performed only on the primary serving cell. If RLF is detected in the primary serving cell, RRC connection reestablishment is triggered. The secondary serving cell does not perform RLF monitoring.
  • the present invention provides a random access method and apparatus, which solves the problem of triggering a random access procedure of a small cell.
  • a random access method including:
  • the terminal detects whether the small cell random access condition is currently met
  • the terminal When the small cell random access condition is met, the terminal automatically initiates a random access procedure of the small cell.
  • the small cell random access condition includes:
  • the newly added small cell uses a different TA than the configured cell, and the cell includes a cell and/or a small cell.
  • the small cell random access condition includes:
  • the TAT maintained on the macro cell is running, and the TAT maintained on the small cell times out.
  • the small cell random access condition includes: The TAT maintained on the small cell times out, and the TAT of the macro cell is restarted.
  • the small cell random access condition includes:
  • RLF monitoring is performed on the small cell and the RLF is detected.
  • the satisfying the small cell random access condition specifically satisfies any one or any of the small cell random access conditions.
  • the method further includes:
  • the terminal When the base station indicates that the newly added small cell and the configured cell use the same TA, the terminal directly performs data transmission and reception through the newly added small cell.
  • the invention also provides a random access device, comprising:
  • the detecting module is configured to: detect whether the small cell random access condition is currently met;
  • the random access triggering module is configured to: automatically initiate a random access procedure of the small cell when the small cell random access condition is met.
  • the random access triggering module is configured to: automatically initiate a random access procedure of the small cell when any one or any of the small cell random access conditions are met.
  • the device further comprises:
  • the direct transceiver module is configured to: when the base station indicates that the newly added small cell and the configured cell use the same TA, directly send and receive data through the newly added small cell.
  • the embodiment of the present invention provides a random access method and device, where the terminal detects whether the small cell random access condition is met, and when the small cell random access condition is met, the terminal automatically initiates a random access process of the small cell. .
  • the random access mechanism of the small cell is implemented, and the problem of triggering the random access process of the small cell is solved.
  • Embodiment 1 is a flowchart of a random access method according to Embodiment 1 of the present invention.
  • Embodiment 4 is a flowchart of a random access method according to Embodiment 4 of the present invention.
  • FIG. 5 is a flowchart of a random access method according to Embodiment 5 of the present invention.
  • FIG. 6 is a schematic structural diagram of a random access apparatus according to Embodiment 6 of the present invention.
  • the base station 1 is a macro base station, and has one cell, which is a cell 1
  • the base station 2 is a small cell base station, and has two cells, which are a cell 3 and a cell 4.
  • the following procedure is described by taking the control connection on the macro base station as an example, and the roles are interchanged, that is, the base station 1 is a small cell base station, and the base station 2 is an ao base station, and the process is the same.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the embodiment of the present invention provides a random access method, in which the terminal establishes a connection with the cell 1, and the macro base station sends a measurement task to the terminal, and receives the measurement report reported by the terminal.
  • the specific process is shown in FIG. 1 and includes:
  • Step 101 The macro base station sends a configuration command to the terminal according to the measurement report, and notifies the terminal to add the cell 3, the cell identity information of the cell 3, and the indication information indicating whether the cell 3 uses the same TA as the configured cell.
  • Step 102 The terminal receives the configuration command, and finds that the cell 3 is the first cell configured on the small cell base station, or the cell 3 needs to use the new TA (different from the TA used by the already configured cell 1);
  • Step 103 The terminal performs a random access procedure on the cell 3.
  • Step 104 After the random access process is completed, the terminal may perform normal data on the cell 3. Send and receive;
  • Step 105 The traffic is greatly increased, and the macro base station adds the cell 4 to the terminal according to the measurement report, and notifies the terminal that the cell 4 does not use the same TA as the already configured cell 1 and cell 3;
  • Step 106 The terminal receives the configuration command, and finds that the cell 4 does not use the same TA as the configured cell 1 and cell 3;
  • Step 107 The terminal performs a random access procedure on the cell 3;
  • Step 108 After the random access procedure is completed, the terminal may perform normal data transmission and reception on the cell 4 in the foregoing steps 104 and 105.
  • the terminal does not need to perform a random access procedure, and performs normal data transmission and reception directly on the cell 4.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the embodiment of the invention provides a random access method.
  • the terminal establishes a connection with the cell 1.
  • the cell 3 and the cell 4 are configured.
  • the terminal is configured with the cell 1 and the cell 3 and the cell 4, wherein the cell 3 and the cell 4 can use the same TA.
  • the terminal manages the TAT1 of the cell 1, and the cell 3, and the lengths of the TAT2, TAT1, and TAT2 of the cell 4 are all configured by the macro base station to the terminal, and the two may be the same or different.
  • the specific process is shown in Figure 2, including:
  • Step 201 At time one, the terminal detects that the TAT2 is timed out, and the TAT1 is running.
  • Step 203 After the random access procedure is completed, the terminal can perform normal data transmission and reception on the cell 3 and the cell 4.
  • the respective TAT2 and TAT3 are respectively managed, that is, if the TAT3 times out, only the data transmission and reception of the cell 3 is affected, and only the cell 4 is triggered to perform the random access process.
  • the cell 3 is not affected, and the terminal performs a random access procedure on the cell 4, and resumes normal data transmission and reception on the cell 4 after completion.
  • the terminal does not perform the random access procedure, but deletes both the cell 3 and the cell 4 related to the TAT2, and performs the random access process when the cell 3 or the cell 4 is added, as shown in the first embodiment. the process of.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the present invention provides a random access method.
  • the terminal establishes a connection with the cell 1.
  • the cell 3 and the cell 4 are configured.
  • the terminal is configured with the cell 1 and the cell 3 and the cell 4, wherein the cell 3 and the cell 4 can use the same TA.
  • the terminal manages TAT1 of cell 1 and TAT2 of cell 3 and cell 4, respectively.
  • the specific process is shown in Figure 3, including:
  • Step 301 At time one, the terminal detects that TAT2 times out, and TAT1 is not running at this time;
  • Step 302 The terminal performs a random access procedure on the cell 1 related to TAT1, and the TAT1 resumes running;
  • Step 303 After the TAT1 is run, the terminal selects the cell 3 with a slightly better signal quality to perform a random access procedure according to the signal quality of the cell 3 and the cell 4 associated with the TAT2, or randomly selects the cell 3 or cell 4 associated with the TAT2. Cell 3 performs a random access procedure;
  • Step 304 After the random access procedure is completed, the terminal can perform normal data transmission and reception on the cell 3 and the cell 4.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the present invention provides a random access method, in which the terminal establishes a connection with the cell 1. Since the traffic increases, the cell 3 and the cell 4 are configured. At this time, the terminal is configured with the cell 1 and the cell 3, and the cell 4, where the cell 3 and cell 4 can use the same TA, the terminal successfully accesses cell 3 and cell 4, and performs normal data transmission and reception in cell 3 and cell 4.
  • the specific process is shown in Figure 4, including: Step 401: At time one, the terminal detects that the cell 3 has an RLF;
  • Step 402 The terminal selects a cell 4 with a slightly better signal quality to perform a random access procedure according to the signal quality of the cell 3 and the cell 4 of the same TA.
  • Step 403 After the random access procedure is completed, the terminal may perform positive on the cell 3 and the cell 4. Regular data transmission and reception.
  • the RLF is detected separately. If the RLF occurs in the cell 3, only the data transmission and reception of the cell 3 is affected, and only the cell 3 is triggered to perform the random access process, and the cell 4 does not. Affected, the terminal performs a random access procedure on the cell 3, and resumes normal data transmission and reception on the cell 3 after completion.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • the embodiment of the invention provides a random access method.
  • the terminal has accessed one or more cells or small cells, and the process of performing random access of the small cell by using the random access method provided by the embodiment of the present invention is as shown in FIG. 5, and includes:
  • Step 501 The terminal detects whether the small cell random access condition is currently met.
  • the small cell random access conditions involved mainly include any one or any of the following:
  • the newly added small cell uses a different TA from the configured cell, and the configured cell includes a cell and/or a small cell;
  • the TAT maintained on the macro cell is running, and the TAT maintained on the small cell is timed out;
  • the TAT maintained on the small cell times out, and the TAT of the macro cell is restarted
  • RLF monitoring is performed on the small cell and the RLF is detected.
  • Step 502 When the small cell random access condition is met, the terminal automatically initiates a random access procedure of the small cell.
  • the terminal may automatically initiate a random access procedure of the small cell.
  • Embodiment 6 The embodiment of the present invention provides a random access device, and the structure thereof is as shown in FIG. 6 , and includes: a detecting module 601, configured to detect whether a small cell random access condition is currently met;
  • the random access triggering module 602 is configured to automatically initiate a random access procedure of the small cell when the small cell random access condition is met.
  • the random access triggering module 602 is specifically configured to automatically initiate a random access procedure of the small cell when any one or any of the small cell random access conditions are met.
  • the device further comprises:
  • the direct transceiver module 603 is configured to perform data transmission and reception directly through the newly added small cell when the base station indicates that the newly added small cell and the configured cell use the same TA.
  • the above random access device can be integrated in the terminal, and the terminal completes the corresponding function.
  • all or part of the steps of the foregoing embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.
  • the invention is not limited to any particular combination of hardware and software.
  • the various devices/function modules/functional units in the above embodiments may be implemented using a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • Each device/function module/function unit in the above embodiment is implemented in the form of a software function module. And when sold or used as a stand-alone product, it can be stored on a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • An embodiment of the present invention provides a random access method and apparatus, where a terminal detects whether a small cell random access condition is currently met, and when the small cell random access condition is met, the terminal automatically initiates random access of a small cell. process.
  • the random access mechanism of the small cell is realized, and the problem of triggering the random access process of the small cell is solved.

Landscapes

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

Abstract

一种随机接入方法和装置。涉及移动通信领域;解决了触发小小区随机接入过程的问题。该方法包括:终端检测当前是否满足小小区随机接入条件;在满足小小区随机接入条件时,所述终端自动发起小小区的随机接入过程。本发明实施例提供的技术方案适用于LTE系统,实现了小小区的随机接入机制。

Description

随机接入方法和装置
技术领域
本发明涉及移动通信领域, 尤其涉及一种触发小小区的随机接入方法和 装置。
背景技术
LTE系统中, 处于连接态的 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即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(Time Advance, 简称 TA ) ) , TA主要用途是 UE用来确定发送数据时刻的, UE获取上行同步后, 启动上 行同步定时器( timeAlignmentTimer, 简称为 TAT ) , 若 UE能在 TAT超时 之前接收到基站发送给 UE的时间提前量, 则认为该 UE与该基站之间保持 上行同步, 否则 TAT超时, UE认为失去上行同步, 终端只是释放相关资源 并通知 RRC层。 终端在失去上行同步后, 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。 UE会在以下几种情况下执行随机接入过程: 从空闲 (IDLE )态初始接 入、 RRC连接重建、 切换、 下行(DL, Downlink )数据到达、 上行(UL, Uplink )数据到达和定位业务, 其中切换和下行数据到达是通过收到基站的 指示需要执行随机接入过程。 另外一点, 终端在服务小区上会进行无线链路 失败(Radio link failure, RLF )监测, 如果检测到服务小区发生 RLF, 则会 触发 RRC连接重建,首先是执行小区选择过程,然后在选择的小区上执行随 机接入过程。
引入载波聚合技术( Carrier Aggregation, 简称 CA )后, 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, 并引 入主服务小区( Primary Cell, Pcell ) ,和辅服务小区( Secondary Cell, Scell ) 。 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, 包含 Pcell的 TA组称 为 PTAG, 没有包含 Pcell的 TA组称为 STAG。 UE在 PTAG上 Pcell执行随 机接入的时机跟一个 TA时一样, 在 STAG上小区执行随机接入的时机只有 一个,就是网络侧通知。另外一点,只在主服务小区上会进行 RLF ( Radio link failure, 无线链路失败)监测, 如果检测到主服务小区发生 RLF, 则会触发 RRC连接重建。 辅服务小区不执行 RLF监测。
由于频谱资源的匮乏, 以及移动用户的大流量业务的激增, 釆用高频点 如 3.5GHz进行热点覆盖的需求日益明显, 釆用低功率的节点成为新的应用 场景, 为的是增加用户吞吐量和增强移动性能。 但是由于高频点的信号衰减 比较厉害, 小小区的覆盖范围比较小, 并且与现有的小区不共站点, 目前不 少公司和运营商都倾向于寻求一种新的增强方案,双连接( Dual Connectivity ) 就是其中之一。双连接下终端可以同时与两个以上的网络节点保持数据连接, 仅与一个网络节点存在控制连接。 对于如何触发小小区的随机接入过程, 当 前尚未有公开的技术解决。
发明内容
本发明提供了一种随机接入方法和装置, 解决了触发小小区随机接入过 程的问题。
一种随机接入方法, 包括:
终端检测当前是否满足小小区随机接入条件;
在满足小小区随机接入条件时, 所述终端自动发起小小区的随机接入过 程。
优选的, 所述小小区随机接入条件包括:
在小小区增加的时候, 新增加的小小区与已配置的小区使用不同的 TA, 所述小区包含小区和 /或小小区。
优选的, 所述小小区随机接入条件包括:
宏小区上维护的 TAT正在运行, 小小区上维护的 TAT超时。
优选的, 所述小小区随机接入条件包括: 在小小区上维护的 TAT超时, 宏小区的 TAT重新启动。
优选的, 所述小小区随机接入条件包括:
在小小区上执行 RLF监测并检测到 RLF。
优选的, 所述满足小小区随机接入条件具体为满足所述小小区随机接入 条件中的任一或任意多个。
优选的, 该方法还包括:
在基站指示所述终端新增加的小小区和已配置的小区使用同样的 TA 时, 终端直接通过所述新增加的小小区进行数据收发。
本发明还提供了一种随机接入装置, 包括:
检测模块, 设置为: 检测当前是否满足小小区随机接入条件;
随机接入触发模块, 设置为: 在满足小小区随机接入条件时, 自动发起 小小区的随机接入过程。
优选的, 所述随机接入触发模块, 设置为: 在满足所述小小区随机接入 条件中的任一或任意多个时自动发起小小区的随机接入过程。
优选的, 该装置还包括:
直接收发模块, 设置为: 在基站指示新增加的小小区和已配置的小区使 用同样的 TA时, 直接通过所述新增加的小小区进行数据收发。
本发明实施例提供了一种随机接入方法和装置, 终端检测当前是否满足 小小区随机接入条件, 并在满足小小区随机接入条件时, 所述终端自动发起 小小区的随机接入过程。 实现了小小区的随机接入机制, 解决了触发小小区 随机接入过程的问题。 附图概述
图 1是本发明的实施例一提供的一种随机接入方法的流程图;
图 2是本发明的实施例二提供的一种随机接入方法的流程图; 图 3是本发明的实施例三提供的一种随机接入方法的流程图;
图 4是本发明的实施例四提供的一种随机接入方法的流程图;
图 5是本发明的实施例五提供的一种随机接入方法的流程图;
图 6是本发明的实施例六提供的一种随机接入装置的结构示意图。
本发明的较佳实施方式
对于如何触发小小区的随机接入过程, 当前尚未有公开的技术解决。 为了解决上述问题, 本发明的实施例提供了一种随机接入方法。 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。
以下实施例中, 基站 1是宏基站, 有 1个小区, 是小区 1 , 基站 2是小 小区基站, 有两个小区, 分别是小区 3和小区 4。 以下过程是以控制连接在 宏基站上为例进行说明, 角色互换, 即基站 1是小小区基站, 基站 2是宏基 站, 过程一样。
实施例一:
本发明实施例提供了一种随机接入方法, 终端与小区 1建立了连接, 宏 基站给终端下发测量任务, 并接收终端上报的测量报告, 具体流程如图 1所 示, 包括:
步骤 101 : 由于业务量增加, 宏基站根据测量报告, 给终端发送配置命 令, 通知终端增加小区 3 , 携带小区 3的小区标识信息以及指示该小区 3是 否与已配置小区使用相同 TA的指示信息;
步骤 102: 终端收到配置命令, 发现小区 3是小小区基站上配置的第一 个小区, 或者发现小区 3需要使用新的 TA (与已经配置的小区 1使用的 TA 不同) ;
步骤 103: 终端在小区 3上执行随机接入过程;
步骤 104: 随机接入过程完成后, 终端可以在小区 3上进行正常的数据 收发;
步骤 105: 业务量大增, 宏基站根据测量报告, 给终端增加小区 4, 并告 知终端, 小区 4跟已经配置的小区 1和小区 3都不使用相同的 TA;
步骤 106: 终端收到配置命令,发现小区 4跟已经配置的小区 1和小区 3 都不使用相同的 TA;
步骤 107: 终端在小区 3上执行随机接入过程;
步骤 108: 随机接入过程完成后, 终端可以在小区 4上进行正常的数据 收发上述步骤 104和 105。
特别的, 如果基站通知终端, 小区 4可以跟小区 3使用相同的 TA, 则 终端不需要执行随机接入过程, 直接在小区 4上进行正常的数据收发。
实施例二:
本发明实施例提供了一种随机接入方法。 终端与小区 1建立了连接, 由 于业务量增加,又配置了小区 3和小区 4 ,此时,终端配置了小区 1和小区 3 , 小区 4 , 其中小区 3和小区 4可以釆用相同的 TA, 终端分别管理小区 1的 TAT1 , 和小区 3 , 小区 4的 TAT2 , TAT1和 TAT2的长度都是宏基站配置 给终端的, 两者可以相同或者不同。 具体流程如图 2所示, 包括:
步骤 201 : 时刻一, 终端检测到 TAT2超时, 此时 TAT1正在运行; 步骤 202: 终端根据 TAT2相关的小区 3和小区 4的信号质量, 选择信 号质量稍好的小区 3执行随机接入过程, 或者随机选择 TAT2相关的小区 3 或小区 4此时为小区 3执行随机接入过程;
步骤 203: 随机接入过程完成后, 终端可以在小区 3和小区 4上进行正 常的数据收发。
上述步骤, 如果小区 3和小区 4不能釆用相同的 TA, 则分别管理各自 的 TAT2和 TAT3 , 即比如 TAT3超时, 则只影响小区 3的数据收发, 只会 触发小区 4执行随机接入过程, 小区 3不受影响, 终端在小区 4上执行随机 接入过程, 完成后恢复在小区 4上进行正常的数据收发。 上述步骤 202中, 终端并不执行随机接入过程, 而是将 TAT2相关的小 区 3和小区 4都删除, 等待小区 3或小区 4被增加的时候再执行随机接入过 程如实施例一所示的过程。
实施例三:
本发明提供了一种随机接入方法。 终端与小区 1建立了连接, 由于业务 量增加, 又配置了小区 3和小区 4, 此时, 终端配置了小区 1和小区 3 , 小区 4, 其中小区 3和小区 4可以釆用相同的 TA, 终端分别管理小区 1的 TAT1 , 和小区 3 , 小区 4的 TAT2。 具体流程如图 3所示, 包括:
步骤 301 : 时刻一, 终端检测到 TAT2超时, 此时 TAT1不在运行; 步骤 302: 终端在 TAT1相关的小区 1上执行随机接入过程, TAT1恢复 运行;
步骤 303: 终端在 TAT1运行后, 根据 TAT2相关的小区 3和小区 4的 信号质量, 选择信号质量稍好的小区 3 执行随机接入过程, 或者随机选择 TAT2相关的小区 3或小区 4此时为小区 3执行随机接入过程;
步骤 304: 随机接入过程完成后, 终端可以在小区 3和小区 4上进行正 常的数据收发。
实施例四:
本发明提供了一种随机接入方法, 终端与小区 1建立了连接, 由于业务 量增加, 又配置了小区 3和小区 4 , 此时, 终端配置了 小区 1和小区 3 , 小 区 4, 其中小区 3和小区 4可以釆用相同的 TA, 终端成功接入小区 3和小区 4, 并在小区 3和小区 4进行正常的数据收发。 具体流程如图 4所示, 包括: 步骤 401 : 时刻一, 终端检测到小区 3发生 RLF;
步骤 402: 终端根据釆用相同 TA的小区 3和小区 4的信号质量, 选择 信号质量稍好的小区 4执行随机接入过程;
步骤 403: 随机接入过程完成后, 终端可以在小区 3和小区 4上进行正 常的数据收发。
上述步骤, 如果小区 3和小区 4不能釆用相同的 TA, 则分别检测 RLF, 如果小区 3发生 RLF, 则只影响小区 3的数据收发, 只会触发小区 3执行随 机接入过程, 小区 4不受影响, 终端在小区 3上执行随机接入过程, 完成后 恢复在小区 3上进行正常的数据收发。
需要说明的是, 以上实施例只是针对双连接来描述的, 对于三连接, 四 连接等场景, 其实现原理和过程是一样的, 不再重复描述。
实施例五:
本发明实施例提供了一种随机接入方法。 终端已接入了一个或多个小区 或小小区, 使用本发明实施例提供的随机接入方法完成小小区随机接入的流 程如图 5所示, 包括:
步骤 501、 终端检测当前是否满足小小区随机接入条件;
本步骤中,所涉及的小小区随机接入条件主要包括以下任一或任意多个: 在小小区增加的时候, 新增加的小小区与已配置的小区使用不同的 TA, 已配置的小区包含小区和 /或小小区;
宏小区上维护的 TAT正在运行, 小小区上维护的 TAT超时;
在小小区上维护的 TAT超时, 宏小区的 TAT重新启动;
在小小区上执行 RLF监测并检测到 RLF。
步骤 502、 在满足小小区随机接入条件时, 所述终端自动发起小小区的 随机接入过程;
本步骤中, 在满足小小区随机接入条件中的任一或者任意多个时, 终端 即可自动发起小小区的随机接入过程。
需要说明的时, 在小小区随机接入条件为 "在小小区增加的时候, 新增 加的小小区与已存在的小区或小小区使用不同的 TA" 时, 如果基站指示终 端新增加的小小区和已配置的小区 (小区或小小区)使用同样的 TA时, 则 终端不需要进行随机接入, 直接通过所述新增加的小小区进行数据收发。 实施例六: 本发明实施例提供了一种随机接入装置, 其结构如图 6所示, 包括: 检测模块 601 , 用于检测当前是否满足小小区随机接入条件;
随机接入触发模块 602 , 用于在满足小小区随机接入条件时, 自动发起 小小区的随机接入过程。
小小区随机接入条件的相关说明参见本发明的实施例一至实施例五, 在 些不再重复说明。
优选的, 所述随机接入触发模块 602 , 具体用于在满足所述小小区随机 接入条件中的任一或任意多个时自动发起小小区的随机接入过程。
优选的, 该装置还包括:
直接收发模块 603 , 用于在基站指示新增加的小小区和已配置的小区使 用同样的 TA时, 直接通过所述新增加的小小区进行数据收发。
上述随机接入装置可集成于终端中, 由终端完成相应功能。
本领域普通技术人员可以理解上述实施例的全部或部分步骤可以使用计 算机程序流程来实现,所述计算机程序可以存储于一计算机可读存储介质中, 所述计算机程序在相应的硬件平台上(如系统、 设备、 装置、 器件等)执行, 在执行时, 包括方法实施例的步骤之一或其组合。
可选地, 上述实施例的全部或部分步骤也可以使用集成电路来实现, 这 些步骤可以被分别制作成一个个集成电路模块, 或者将它们中的多个模块或 步骤制作成单个集成电路模块来实现。 这样, 本发明不限制于任何特定的硬 件和软件结合。
上述实施例中的各装置 /功能模块 /功能单元可以釆用通用的计算装置来 实现, 它们可以集中在单个的计算装置上, 也可以分布在多个计算装置所组 成的网络上。
上述实施例中的各装置 /功能模块 /功能单元以软件功能模块的形式实现 并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。 上述提到的计算机可读取存储介质可以是只读存储器, 磁盘或光盘等。
任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易想 到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护范 围应以权利要求所述的保护范围为准。
工业实用性
本发明的实施例提供了一种随机接入方法和装置, 终端检测当前是否满 足小小区随机接入条件, 并在满足小小区随机接入条件时, 所述终端自动发 起小小区的随机接入过程。 实现了小小区的随机接入机制, 解决了触发小小 区随机接入过程的问题。

Claims

权 利 要 求 书
1、 一种随机接入方法, 包括:
终端检测当前是否满足小小区随机接入条件;
在满足小小区随机接入条件时, 所述终端自动发起小小区的随机接入过 程。
2、根据权利要求 1所述的随机接入方法, 其中, 所述小小区随机接入条 件包括:
在小小区增加的时候, 新增加的小小区与已配置的小区使用不同的 TA, 所述小区包含小区和 /或小小区。
3、根据权利要求 1所述的随机接入方法, 其中, 所述小小区随机接入条 件包括:
宏小区上维护的 TAT正在运行, 小小区上维护的 TAT超时。
4、根据权利要求 1所述的随机接入方法, 其中, 所述小小区随机接入条 件包括:
在小小区上维护的 TAT超时, 宏小区的 TAT重新启动。
5、根据权利要求 1所述的随机接入方法, 其中, 所述小小区随机接入条 件包括:
在小小区上执行 RLF监测并检测到 RLF。
6、根据权利要求 1或 2或 3或 4或 5所述的随机接入方法, 其中, 所述 满足小小区随机接入条件具体为满足所述小小区随机接入条件中的任一或任 意多个。
7、 根据权利要求 2所述的随机接入方法, 其中, 该方法还包括: 在基站指示所述终端新增加的小小区和已配置的小区使用同样的 TA 时, 终端直接通过所述新增加的小小区进行数据收发。
8、 一种随机接入装置, 包括:
检测模块, 设置为: 检测当前是否满足小小区随机接入条件;
随机接入触发模块, 设置为: 在满足小小区随机接入条件时, 自动发起 小小区的随机接入过程。
9、根据权利要求 8所述的随机接入装置,其中,所述随机接入触发模块, 设置为: 在满足所述小小区随机接入条件中的任一或任意多个时自动发起小 小区的随机接入过程。
10、 根据权利要求 8所述的随机接入装置, 其中, 该装置还包括: 直接收发模块, 设置为: 在基站指示新增加的小小区和已配置的小区使 用同样的 TA时, 直接通过所述新增加的小小区进行数据收发。
PCT/CN2014/075506 2013-09-26 2014-04-16 随机接入方法和装置 WO2014176977A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US15/024,503 US9986588B2 (en) 2013-09-26 2014-04-16 Random access method and device
EP14792059.9A EP3035766A4 (en) 2013-09-26 2014-04-16 RANDOM ACCESS METHOD AND DEVICE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310446677.3 2013-09-26
CN201310446677.3A CN104519589A (zh) 2013-09-26 2013-09-26 随机接入方法和装置

Publications (1)

Publication Number Publication Date
WO2014176977A1 true WO2014176977A1 (zh) 2014-11-06

Family

ID=51843112

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/075506 WO2014176977A1 (zh) 2013-09-26 2014-04-16 随机接入方法和装置

Country Status (4)

Country Link
US (1) US9986588B2 (zh)
EP (1) EP3035766A4 (zh)
CN (1) CN104519589A (zh)
WO (1) WO2014176977A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3142446B1 (en) * 2014-05-08 2019-01-30 LG Electronics Inc. Method for processing plurality of signals in communication system supporting direct communication between terminals and apparatus therefor
DK3189696T3 (en) * 2014-09-02 2018-08-13 Ericsson Telefon Ab L M Cellular base station and method of operation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008041582A1 (en) * 2006-09-26 2008-04-10 Panasonic Corporation Radio transmission device and radio transmission method
CN101389121A (zh) * 2007-09-11 2009-03-18 大唐移动通信设备有限公司 一种随机接入方法、系统及其组成模块
CN102869113A (zh) * 2011-07-06 2013-01-09 上海贝尔股份有限公司 一种通信网络中的物理随机接入的方法和装置

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010093297A1 (en) * 2009-02-16 2010-08-19 Telefonaktiebolaget Lm Ericsson (Publ) Controlling cell activation in a radio communication network
CN101932117A (zh) * 2009-06-20 2010-12-29 中兴通讯股份有限公司 中继节点的随机接入方法
US8804633B2 (en) * 2009-11-05 2014-08-12 Innovative Sonic Corporation Method and apparatus to trigger a random access procedure for carrier aggregation in a wireless communication network
TWM406324U (en) 2009-11-19 2011-06-21 Interdigital Patent Holdings Wireless transmit/receive unit (WTRU)
CN101753202A (zh) * 2010-01-07 2010-06-23 中兴通讯股份有限公司 上行同步方法及终端
CN102123406B (zh) * 2010-01-11 2015-10-21 中兴通讯股份有限公司 多载波系统上行链路的维护方法、装置及系统
CN102149163A (zh) * 2010-02-05 2011-08-10 中兴通讯股份有限公司 一种上报载波聚合中随机接入信息的系统及方法
CN102469570B (zh) * 2010-11-11 2014-11-26 大唐移动通信设备有限公司 信息通知及定时提前量获取方法、系统和设备
CN102036411B (zh) * 2010-12-02 2013-06-26 大唐移动通信设备有限公司 一种进行随机接入的方法及装置
KR102073027B1 (ko) * 2011-04-05 2020-02-04 삼성전자 주식회사 반송파 집적 기술을 사용하는 무선통신시스템에서 복수 개의 타임 정렬 타이머 운용 방법 및 장치
WO2012172397A2 (en) * 2011-06-17 2012-12-20 Telefonaktiebolaget L M Ericsson (Publ) Method and device for performing an access request by a user equipment
JP5890020B2 (ja) * 2011-07-18 2016-03-22 ノキア ソリューションズ アンド ネットワークス オサケユキチュア タイミング前進グループの決定
CN102932837B (zh) * 2011-08-12 2016-01-13 上海贝尔股份有限公司 用于检测小区的定时提前组改变的方法和设备
CN102291837B (zh) * 2011-08-12 2013-11-06 电信科学技术研究院 一种周期性srs的处理方法和设备
US9094988B2 (en) * 2012-01-17 2015-07-28 Qualcomm Incorporated Method and apparatus for performing random access on a secondary carrier
US9832717B2 (en) * 2012-12-19 2017-11-28 Blackberry Limited Method and apparatus for layer 3 configuration in a heterogeneous network
US20160021581A1 (en) * 2013-01-17 2016-01-21 Interdigital Patent Holdings, Inc. Packet data convergence protocol (pdcp) placement
EP2811808A1 (en) * 2013-04-01 2014-12-10 Innovative Sonic Corporation Method and Apparatus for Triggering a Regular Buffer Status Report (BSR) in Dual Connectivity
EP2802185B1 (en) * 2013-04-01 2019-11-13 Innovative Sonic Corporation Method and Apparatus for Adding Serving Cells in a Wireless Communication System
US10178703B2 (en) * 2013-05-09 2019-01-08 Blackberry Limited Stopping a random access procedure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008041582A1 (en) * 2006-09-26 2008-04-10 Panasonic Corporation Radio transmission device and radio transmission method
CN101389121A (zh) * 2007-09-11 2009-03-18 大唐移动通信设备有限公司 一种随机接入方法、系统及其组成模块
CN102869113A (zh) * 2011-07-06 2013-01-09 上海贝尔股份有限公司 一种通信网络中的物理随机接入的方法和装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3035766A4 *

Also Published As

Publication number Publication date
EP3035766A4 (en) 2016-08-17
CN104519589A (zh) 2015-04-15
EP3035766A1 (en) 2016-06-22
US20160227586A1 (en) 2016-08-04
US9986588B2 (en) 2018-05-29

Similar Documents

Publication Publication Date Title
US10925107B2 (en) Fast activation of multi-connectivity utilizing uplink signals
US11134400B2 (en) User equipment, base station, and related methods
KR20190139848A (ko) 트리거 조건을 기반으로 하는 무선 네트워크에서의 지연 핸드오버 실행
CN111543117A (zh) 在不活动状态中运行双连接
JP7298683B2 (ja) Lbt監視失敗の処理方法、装置及びシステム
TW201822559A (zh) 光連接性及自律行動性
TWI465144B (zh) A method of initializing a sub-cell in a cellular communication system, a user equipment, and a base station
CN113498140B (zh) 用于无线通信的切换方法和设备
JP6775665B2 (ja) プライマリセル変更のための方法、デバイス及びコンピュータプログラム
WO2018019001A1 (zh) 一种终端状态转换方法及装置
WO2018228468A1 (zh) 一种无线链路监控方法和装置
WO2019213805A1 (zh) 一种恢复rrc连接的方法及装置、计算机存储介质
TWI733083B (zh) 與基地台處理一雙連結的裝置及方法
TWM340666U (en) Radio link and handover failure handling
WO2020108220A1 (zh) 通信方法及装置
WO2015172579A1 (zh) 一种对无线链路失败的处理方法、终端、基站及存储介质
JP2019518360A (ja) 未ライセンススペクトルを介したセカンダリセルアクティブ化およびアクティブ化解除に関するワイヤレスデバイスフィードバックを制御するためのシステムおよび方法
US11218929B2 (en) Information transmission method and apparatus and communication system
JP7391206B2 (ja) 無線リンク障害(rlf)レポートにおいて隣接セルをソートするための方法
WO2011124105A1 (zh) 一种确定下行时间参考的方法
JP2024001308A (ja) 少量データ送信手順でのリリースメッセージ
JP2023543514A (ja) Ue-ネットワーク間リレーシナリオにおけるリレー再選択およびデータ送信処理手順のための方法および装置
WO2019193519A1 (en) Radio link failure management in wireless communication networks
JP2023534359A (ja) 高速mcgリンク回復手順中のサイドリンク通信のための方法および装置
JP2014138317A (ja) 端末装置、基地局装置、通信システム及び通信方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14792059

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2014792059

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 15024503

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE