WO2010075701A1 - 随机接入方法和系统 - Google Patents

随机接入方法和系统 Download PDF

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Publication number
WO2010075701A1
WO2010075701A1 PCT/CN2009/073709 CN2009073709W WO2010075701A1 WO 2010075701 A1 WO2010075701 A1 WO 2010075701A1 CN 2009073709 W CN2009073709 W CN 2009073709W WO 2010075701 A1 WO2010075701 A1 WO 2010075701A1
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WO
WIPO (PCT)
Prior art keywords
random access
terminal
network side
resource
control channel
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PCT/CN2009/073709
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English (en)
French (fr)
Inventor
张现周
易鸿锋
张文英
Original Assignee
中兴通讯股份有限公司
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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 US13/258,918 priority Critical patent/US20120093102A1/en
Priority to EP09835988.8A priority patent/EP2395787A4/en
Publication of WO2010075701A1 publication Critical patent/WO2010075701A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • the present invention relates to the field of communications, and in particular, to a random access method and system.
  • 1 is a structural diagram of a Long Term Evolution (LTE) mobile communication system.
  • the system includes: a core network and an access network, where the core network is responsible for Other communication systems are interconnected, bearer management, authentication, and routing.
  • the core network includes: a mobility management entity and a service gateway; the access network is responsible for radio resource management, IP header compression, user data encryption, measurement, and the like.
  • eNB evolved Node BMA
  • the data is interconnected between the core network and the access network through the interface of the S1 (S1 is the interface between the core network and the access network), and the data is interconnected by different eNBs in the access network through the X2 interface.
  • S1 is the interface between the core network and the access network
  • eNBs in the access network through the X2 interface.
  • UE user equipment
  • TA time alignment
  • Step S201 The UE and the network side are out of synchronization due to the TA timer being timed out;
  • Step S205 The UE receives the random access response message, After the synchronization between the network side and the UE is completed, the network side will physically uplink the common control channel and the reference signal (Sounding Reference) The signal is called SRS.
  • the resource is re-allocated and sent to the UE by radio resource control (Radio Resource Control).
  • the network side and the UE are out of synchronization, the UE needs to release the PUCCH and SRS resources allocated by the network side; afterwards, when the network side needs to send data to the UE, the UE completes the UE through the collision-free random access procedure.
  • the present invention has been made in view of the problem that the UE and the network side synchronization recovery processing occupying a long time in the related art, and the main object of the present invention is to provide a random access method and system to solve the above problems.
  • a random access method is provided for allocating resources to a terminal when the terminal and the network side are out of synchronization.
  • the random access method includes: the network side terminal transmits a dedicated random access preamble index of the terminal; the terminal sends a random access request to the network side according to the received dedicated random access preamble index; The incoming request allocates physical uplink common control channel resources and reference signal resources to the terminal, and sends the allocated physical uplink common control channel resources and reference signal resources to the terminal.
  • the network side sends the allocated physical uplink common control channel resource and the reference signal resource to the terminal, where: the radio resource control layer on the network side sends the allocated physical uplink common control channel resource and the reference signal resource to the physical layer on the network side.
  • the physical layer on the network side forwards the physical uplink common control channel resources and reference signal resources to the physical layer of the terminal; the physical layer of the terminal will be physically
  • the line common control channel resources and reference signal resources are forwarded to the radio resource control layer of the terminal.
  • the method further comprises: the network side according to a random access request only Burgundy, duration allocated for the terminal TA and the terminal TA to the hair. 1 ⁇ allocated time.
  • the terminal sends the random access request to the network side according to the received dedicated random access preamble index, where the terminal receives the dedicated random access preamble index, and determines a dedicated random access preamble sequence corresponding to the dedicated random access preamble index.
  • a random access system includes a base station and a terminal, wherein the base station is configured to send a dedicated random access preamble index of the terminal to the terminal, and allocate a physical uplink common control channel resource to the terminal in response to the random access request from the terminal. And the reference signal resource, and the allocated physical uplink common control channel resource and the reference signal resource are sent to the terminal; the terminal is configured to send the random access request to the base station according to the received dedicated random access preamble I.
  • the base station is further configured to allocate a TA duration to the terminal according to the random access request, and send the allocated TA duration to the terminal.
  • the network side transmits the PUCCH resource and the SRS resource to the terminal through the random access response message, thereby eliminating the complicated forwarding process of the data in the related technology, and solving the synchronization between the UE and the network side.
  • the recovery processing takes a long time, shortens the delay of data transmission, reduces the hardware requirements of the network side devices, and improves the user experience.
  • the drawings are intended to provide a further understanding of the invention, and are intended to be a part of the description of the invention. In the accompanying drawings: FIG.
  • FIG. 1 is a block diagram of a network structure of an LTE mobile communication system in the related art
  • FIG. 2 is a flowchart of a random access procedure when a UE and a network side are out of synchronization in the related art
  • FIG. 4 is a flowchart of a random access method according to an embodiment of the method of the present invention
  • FIG. 5 is a detailed process flow diagram of a random access method according to an embodiment of the method of the present invention
  • FIG. 6 is a structural block diagram of a random access system according to an embodiment of the method of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As described above, when the network side and the UE are out of synchronization, the UE needs to release the network side allocation.
  • PUCCH Physical Uplink Common Control Channel
  • SRS Reference Signal
  • the basic idea of the present invention is: After receiving a random access message from the UE, the network side allocates SRS resources and PUCCH resources to the UE, and allocates the allocated The SRS resource and the PUCCH resource are sent to the UE in the random access response message, and after the UE obtains the uplink synchronization and the PUCCH and the SRS resources, the UE can normally communicate with the network side. Delay.
  • the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.
  • the preferred embodiments of the present invention are described in the following with reference to the accompanying drawings, which are intended to illustrate and illustrate the invention.
  • a preamble sequence is introduced.
  • the preamble sequence is divided into a common preamble sequence and a dedicated preamble sequence.
  • FIG. 2 shows a random access procedure when the UE and the network side are out of synchronization. The initial random access procedure of the UE and the network side will be described below with reference to the accompanying drawings.
  • FIG. 3 illustrates an initial random access procedure of the related art.
  • the initial random access procedure includes the following processing (step S301 - step S304): Step S301: for some reason (eg, user initiated service, user) Location area update, etc.), The UE sends a random access request message to the network side; Step S302: The network side acquires the random access request message, and allocates a temporary wireless network side identification symbol ( Temporary Radio Network Identity, called TEMP-RNTI), time alignment a (TA) duration and an uplink resource, after which the random access response message is sent to the UE, where the random access response message carries the TEMP_RNTI, the TA, and the uplink resource; Step S303: The UE receives the random access response The MSG3 is sent to the network side by using the uplink resource allocated by the network side, and the TA timer is started.
  • TEMP-RNTI Temporary Radio Network Identity
  • TA time alignment a
  • Step S304 The UE receives the MSG4 and completes the initial random access. process.
  • Method Embodiments According to an embodiment of the present invention, a random access method is provided. 4 is a flowchart of a random access method according to an embodiment of the present invention. It should be noted that, for convenience of description, the technical solution of the method embodiment of the present invention is shown and described in FIG. 4 in the form of steps. The steps shown in Figure 4 can be performed in a computer system such as a set of computer executable instructions. Although the logical order is illustrated in FIG. 4, in some cases, the steps shown or described may be performed in an order different than that herein. As shown in FIG. 4, the method includes the following steps (step S402 - step S406):
  • the network side sends a dedicated random access preamble index of the UE to the UE.
  • S404 The UE sends a random access request to the network side according to the received dedicated random access preamble index.
  • the network side allocates physical uplink common control channel resources and reference signal resources to the UE according to the random access request, and sends the allocated physical uplink common control channel resources and reference signal resources to the UE.
  • the network side sends the dedicated random access preamble index of the UE to the UE, and the UE receives the dedicated random access preamble index to determine the dedicated random access preamble I.
  • the UE sends a random access request to the network side, where the random access request carries a dedicated random access preamble sequence.
  • the network side allocates physical uplink common control channel resources and reference signal resources to the UE according to the random access request, and allocates the TA duration to the UE.
  • the radio resource control layer on the network side sends the allocated physical uplink common control channel resources, reference signal resources, and TA duration to the physical layer on the network side, and the physical layer on the network side will physically uplink common control channel resources, reference signal resources, and The TA duration is forwarded to the physical layer of the UE; the physical layer of the UE forwards the physical uplink common control channel resource, the reference signal resource, and the TA duration to the radio resource control layer of the UE.
  • the UE After receiving the physical uplink common control channel resources and reference signal resources, the UE can normally communicate with the network side. It can be seen that the difference between the random access procedure shown in FIG. 4 and FIG. 2 is: In the process shown in FIG. 4, after receiving the random access message from the UE, the network side allocates the SRS resource and the PUCCH to the UE. The resource, and the allocated SRS resource and the PUCCH resource are sent to the UE in the random access response message, thereby eliminating the complicated forwarding process of the data in the method shown in FIG. 2, and solving the occupation time of the UE and the network side synchronous recovery processing. The long problem shortens the delay of data transmission, reduces the hardware requirements of the network side devices, and improves the user experience. FIG.
  • Step S501 the UE and the network side have been established.
  • RRC connection the UE is in an RRC connected state
  • Step S502 the UE and the network side are out of synchronization, and the UE releases the network side before it is allocated
  • Step S503 the network side needs to send data to the UE, and the dedicated preamble index of the UE is sent to the UE (corresponding to step S402 described above);
  • Step S504 the UE uses the dedicated preamble index corresponding to the dedicated The preamble sequence is carried in the random access request message and sent to the network side (corresponding to step S404 described above), and the timer is started;
  • step S505 the network side receives the random access request message, and allocates the SRS resource and the PUCCH resource to the UE.
  • FIG. 6 shows the structure of a random access system according to an embodiment of the present invention. As shown in FIG. 6, the system includes a base station 10 and a terminal 20.
  • the base station 10 is configured to send the dedicated random access preamble index of the terminal 20 to the terminal 20, and allocate the physical uplink common control channel resource and the reference signal resource to the terminal 20 in response to the random access request from the terminal 20, and allocate the allocated
  • the physical uplink common control channel resource and the reference signal resource are sent to the terminal 20, and are also used to allocate the TA duration to the terminal 20 according to the random access request, and send the allocated TA duration to the terminal 20;
  • the random access request is sent to the base station 10 according to the received dedicated random access preamble index.
  • the base station 10 when the terminal 20 and the base station 10 are out of synchronization, the base station 10 sends the dedicated random access preamble index of the terminal 20 to the terminal 20, and the terminal 20 receives the dedicated random access preamble index to determine a dedicated random access preamble.
  • the terminal 20 sends a random access request to the base station 10, where the random access request carries a dedicated random access preamble sequence.
  • the base station 10 allocates physical uplink common control channel resources and reference signal resources to the terminal 20 according to the random access request, and allocates the TA duration to the terminal 20.
  • the radio resource control layer of the base station 10 transmits the allocated physical uplink common control channel resource, the reference signal resource, and the TA duration to the physical layer of the base station 10.
  • the physical layer of the base station 10 sets the physical uplink common control channel resource, the reference signal resource, and the TA duration.
  • the physical layer forwarded to the terminal 20; the physical layer of the terminal 20 forwards the physical uplink common control channel resource, the reference signal resource, and the TA duration to the radio resource control layer of the terminal 20.
  • the terminal 20 can normally communicate with the base station 10.
  • the network side will use PUCCH and SRS resources.
  • the source is sent to the terminal through the random access response message, which omits the complicated forwarding process of the data in the related technology, solves the problem that the UE and the network side synchronize recovery processing takes a long time, shortens the delay of data transmission, and reduces the network.
  • the hardware requirements of the side devices improve the user experience.
  • the random access method and/or system provided by the present invention by transmitting the PUCCH and the SRS resources through the random access response message, the complicated forwarding process of the data in the related art is omitted, and the solved UE is solved.
  • the network-side synchronization recovery process takes a long time, shortens the delay of data transmission, reduces the hardware requirements of the network-side device, improves the user experience, and can be applied to traffic that is very d or large. Business.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

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  • Computer Networks & Wireless Communication (AREA)
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Description

随积 *接入方法和系统
技术领域 本发明涉及通信领域， 尤其涉及一种随机接入方法和系统。 背景技术 图 1是长期演进 ( Long Term Evolution, 筒称为 LTE ) 移动通信系统的 结构才 图， 如图 1所示， 该系统包括： 核心网和接入网， 其中， 核心网用于 负责与其它通信系统互联互通、 承载管理、 鉴权认证、 路由选择， 核心网包 括： 移动管理实体和服务网关； 接入网用于负责无线资源管理、 IP头压缩、 用户数据加密、 测量， 包括多个 eNB。 其中， 核心网和接入网之间通过 S1 ( S1为核心网和接入网之间的接口）接口进行数据的互联互通， 接入网内部 不同的 eNB之间通过 X2接口进行数据的互联互通。 目前 , 如果用户设备 ( User Equipment , 筒称为 UE ) 与网络侧已经实 现了上行同步和下行同步， 如果由于某种原因导致 UE和网络侧上行失步， 例如， 由于时间对齐 （Time Alignment, 筒称为 TA ) 定时器超时而导致 UE 和网络侧上行失步。 在上述情况下， 网络侧需要与 UE进行消息交互以恢复 上行同步， 具体地， 图 2是相关技术中网络侧与 UE恢复同步的信令流程图， 如图 2所示， 该信令流程主要包括以下处理 （步骤 S201-步骤 S206 ): 步骤 S201 : 由于 TA定时器超时， 造成 UE和网络侧上行失步； 步骤 S202: 网络侧向 UE发送数据， 即通过公共控制信道将该 UE的专 用前导索引发送给 UE; 步骤 S203: UE接收该专用前导索引， 确定该专用前导索引对应的该专 用前导序列 , 该专用前导序列为网络侧为其分配的 , 并^1该专用前导序列携 带在随机接入请求消息中发送至网络侧； 步骤 S204: 网络侧为 UE分配 TA时长， 并将该 TA时长携带在随机接 入响应消息中发送至 UE; 步骤 S205： UE接收到该随机接入响应消息， 完成网络侧和 UE之间的 同步，之后，网络侧将物理上行公共控制信道和参考信号（ Sounding Reference Signal, 筒称为 SRS ) 资源通过无线资源控制 （ Radio Resource Control, 筒称 为 RRC ) 重新分配并发送给 UE; 步骤 S206: RRC重新分配完成后， 用户向网络侧发送下行数据。 在上述过程中， 在网络侧和 UE上行失步时， UE需要释放网络侧分配 的 PUCCH和 SRS资源； 之后 , 当网络侧需要向 UE发送数据时 , 会通过无 冲突的随机接入过程完成 UE和网络侧的同步。 其中， 在恢复的过程中 , 还 需要媒体接入控制（ Media Access Control, 筒称为 MAC )通知无线资源控制 ( Radio Resource Control , 筒称为 RRC ), 将物理上行控制信道 ( Physical Upstream Channel,筒称为 PUCCH )和 SRS的资源通过 RRC消息发送给 UE, 然后才能够发送数据 , 由于该过程中 PUCCH资源和 SRS资源需要从 MAC 到 RRC, 最后再从 MAC发送给 UE, 会导致整个同步恢复过程具有较大的 时延。 然而 , 针对相关技术中 UE与网络侧同步恢复处理占用时间长的问题 , 目前尚未提出有效的解决方案。 发明内容 考虑到相关技术中存在的 UE与网络侧同步恢复处理占用时间长的问题 而提出本发明， 为此，本发明的主要目的在于提供一种随机接入方法及系统， 以解决上述问题之一。 才艮据本发明的一个方面， 提供一种随机接入方法， 该方法用于终端与网 络侧发生失步的情况下为终端分配资源。 根据本发明的随机接入方法包括： 网络侧向终端发送该终端的专用随机 接入前导索引； 终端根据接收到的专用随机接入前导索引向网络侧发送随机 接入请求； 网络侧根据随机接入请求 , 为终端分配物理上行公共控制信道资 源和参考信号资源， 并将分配的物理上行公共控制信道资源和参考信号资源 发送给终端。 优选地，网络侧将分配的物理上行公共控制信道资源和参考信号资源发 送给终端包括： 网络侧的无线资源控制层将分配的物理上行公共控制信道资 源和参考信号资源发送给网络侧的物理层； 网络侧的物理层将物理上行公共 控制信道资源和参考信号资源转发给终端的物理层； 终端的物理层将物理上 行公共控制信道资源和参考信号资源转发给终端的无线资源控制层。 优选地， 该方法还包括： 网络侧才艮据随机接入请求， 为终端分配 TA时 长， 并^1分配的 TA时长发送给终端。 优选地，终端才艮据接收到的专用随机接入前导索引向网络侧发送随机接 入请求包括： 终端接收专用随机接入前导索引， 确定专用随机接入前导索引 对应的专用随机接入前导序列； 终端向网络侧发送随机接入请求， 其中， 该 随机接入请求中携带有专用随机接入前导序列。 根据本发明的另一个方面， 提供一种随机接入系统。 根据本发明的随机接入系统包括基站和终端， 其中， 基站用于向终端发 送该终端的专用随机接入前导索引， 以及响应于来终端的随机接入请求为终 端分配物理上行公共控制信道资源和参考信号资源， 并将分配的物理上行公 共控制信道资源和参考信号资源发送给终端； 终端， 用于根据接收到的专用 随机接入前导索 I向基站发送随机接入请求。 优选地， 基站还用于根据随机接入请求， 为终端分配 TA时长， 并将分 配的 TA时长发送给终端。 通过本发明的上述至少一个技术方案， 网络侧^)夺 PUCCH 资源和 SRS 资源通过随机接入响应消息中发送给终端 , 省去了相关技术中数据的复杂转 发过程 , 解决了 UE与网络侧同步恢复处理占用时间长的问题， 缩短了数据 传输的时延 , 减少了网络侧设备对硬件的需求， 提高了用户体验。 附图说明 附图用来提供对本发明的进一步理解， 并且构成说明书的一部分， 与本 发明的实施例一起用于解释本发明 , 并不构成对本发明的限制。 在附图中： 图 1是相关技术中的 LTE移动通信系统的网络结构框图； 图 2 是相关技术中的 UE 与网络侧上行失步时的随机接入过程的流程 图； 图 3是相关技术中的 UE与网络侧的初始随机接入过程的流程图； 图 4是才艮据本发明方法实施例的随机接入方法的流程图； 图 5是才艮据本发明方法实施例的随机接入方法的详细处理流程图； 图 6是才艮据本发明方法实施例的随机接入系统的结构框图。 具体实施方式 功能相克述 如上所述， 在网络侧和 UE 上行失步时， UE 需要释放网络侧分配的
PUCCH (物理上行公共控制信道）和 SRS (参考信号） 资源， 如果网络侧继 续与 UE进行数据传输, 网络侧需要与 UE上行同步， 并为 UE重新分配并 发送 PUCCH和 SRS资源， 即网络侧如果需要向处于 RRC连接状态， 但是 上行失步的 UE发送下行数据， 会首先向该 UE发起随机接入过程。 基于此， 本发明提供了一种改进的随机接入方案， 本发明的基本思路是： 网络侧接收 到来自 UE的随机接入消息后 , 会为 UE分配 SRS资源和 PUCCH资源 , 并 将分配的 SRS资源和 PUCCH资源在随机接入响应消息中发送给 UE, UE获 得上行同步和 PUCCH和 SRS的资源之后， 就可以与网络侧正常通信了， 通 过该方案， 可以减少 UE与网络侧恢复上行同步的时延。 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组 合。 以下结合附图对本发明的优选实施例进行说明 , 应当理解 , 此处所描述 的优选实施例仅用于说明和解释本发明， 并不用于限定本发明。 为了便于理解， 在对本发明实施例进行说明之前， 首先对本发明实施例 涉及的相关技术进行筒要的描述。 在移动通信系统中， 为了解决 UE接入通信系统的冲突问题， 引入了前 导序列。 特别地， 在 LTE通信系统中， 为了避免 UE进行切换时产生冲突， 并提高切换成功率， ^夺前导序列分为公共前导序列和专用前导序列。 图 2示 出了 UE和网络侧上行失步时的随机接入过程， 下面结合附图对 UE和网络 侧的初始随机接入过程进行说明。 图 3描述了相关技术的初始随机接入过程， 如图 3所示， 该初始随机接 入过程包括以下处理 （步骤 S301-步骤 S304 ): 步骤 S301 : 由于某种原因（例如用户发起业务、用户的位置区更新等）, UE向网络侧发送随机接入请求消息; 步骤 S302: 网络侧获取上述随机接入请求消息， 并为 UE分配临时无 线网络侧识别符号（ Temporary Radio Network Identity,筒称为 TEMP— RNTI )、 时间对齐（ TA ) 时长及上行资源 , 之后 , 向 UE发送随机接入响应消息 , 其 中， 该随机接入响应消息中携带有 TEMP— RNTI、 TA及上行资源； 步骤 S303： UE接收到该随机接入响应， 使用网络侧为其分配的上行资 源向网络侧发送 MSG3 , 同时启动 TA定时器， 网络侧接收到 MSG3之后 , 向 UE反馈响应消息 MSG4; 步骤 S304: UE接收到上述 MSG4, 完成初始随机接入过程。 方法实施例 根据本发明实施例， 提供了一种随机接入方法。 图 4是根据本发明实施例的随机接入方法的流程图， 需要说明的是， 为 了便于描述， 在图 4中以步骤的形式示出并描述了本发明的方法实施例的技 术方案， 在图 4中所示的步骤可以在诸如一组计算机可执行指令的计算机系 统中执行。 虽然在图 4中示出了逻辑顺序 , 但是在某些情况下 , 可以以不同 于此处的顺序执行所示出或描述的步骤。 如图 4所示， 该方法包括以下步骤 (步骤 S402-步骤 S406 ):
S402 , 网络侧向 UE发送该 UE的专用随机接入前导索引；
S404 , UE才艮据接收到的专用随机接入前导索引向网络侧发送随机接入 请求；
S406, 网络侧根据随机接入请求， 为 UE分配物理上行公共控制信道资 源和参考信号资源， 并将分配的物理上行公共控制信道资源和参考信号资源 发送给 UE。 在具体实施过程中， UE与网络侧发生上行失步时， 首先， 网络侧向 UE 发送该 UE的专用随机接入前导索引， UE接收专用随机接入前导索引， 确定 专用随机接入前导索 I对应的专用随机接入前导序列， UE 向网络侧发送随 机接入请求， 其中， 随机接入请求中携带有专用随机接入前导序列。 之后， 网络侧根据随机接入请求， 为 UE分配物理上行公共控制信道资 源和参考信号资源 , 并为 UE分配 TA时长。 最后， 网络侧的无线资源控制层将分配的物理上行公共控制信道资源、 参考信号资源和 TA时长发送给网络侧的物理层， 网络侧的物理层将物理上 行公共控制信道资源、 参考信号资源和 TA时长转发给 UE的物理层； UE的 物理层将物理上行公共控制信道资源、 参考信号资源和 TA 时长转发给 UE 的无线资源控制层。
UE接收到物理上行公共控制信道资源和参考信号资源后， 就可以与网 络侧正常进行通信了。 可以看出， 图 4与图 2所示的随机接入流程的不同点在于： 图 4所示的 流程中 , 网络侧接收到来自 UE的随机接入消息后 , 会为 UE分配 SRS资源 和 PUCCH资源 , 并将分配的 SRS资源和 PUCCH资源在随机接入响应消息 中发送给 UE, 这样， 省去了图 2所示方法中数据的复杂转发过程， 解决了 UE 与网络侧同步恢复处理占用时间长的问题， 缩短了数据传输的时延， 减 少了网络侧设备对硬件的需求， 提高了用户体验。 图 5是才艮据本发明方法实施例的随机接入方法的详细处理流程图 ,如图 5所示， 该方法包括以下步骤 (步骤 S501至步骤 S507 ): 步骤 S501 , UE和网络侧已经建立了 RRC连接， UE处于 RRC连接状 态； 步骤 S502, UE与网络侧上行失步， UE释放了网络侧之前为其分配的
SRS资源和 PUCCH资源； 步骤 S503 , 网络侧需要下发数据给 UE, 会将该 UE的专用前导索引发 送给 UE (对应于上述的步骤 S402 ); 步骤 S504, UE将上述专用前导索引对应的专用前导序列携带在随机接 入请求消息中发送给网络侧 （对应于上述的步骤 S404 ), 同时启动定时器； 步骤 S505 , 网络侧接收到上述随机接入请求消息， 为 UE分配 SRS资 源和 PUCCH资源 , 并将该 SRS资源和 PUCCH资源通过随机接入响应消息 发送给 UE (对应于上述的步骤 S406 )； 步骤 S506, UE接收到随机接入响应消息， 使用 PUCCH 资源和 SRS 资源与网络侧进行通信 , 并启动 TA定时器； 步骤 S507 , 网络侧向 UE发送数据。 系统实施例 根据本发明实施例， 提供一种随机接入系统。 图 6示出了根据本发明实施例的随机接入系统的结构， 如图 6所示， 该 系统包括基站 10和终端 20。 基站 10, 用于向终端 20发送该终端 20的专用随机接入前导索引， 以 及响应于来终端 20的随机接入请求为终端 20分配物理上行公共控制信道资 源和参考信号资源， 并将分配的物理上行公共控制信道资源和参考信号资源 发送给终端 20, 还用于才艮据随机接入请求， 为终端 20分配 TA时长， 并将 分配的 TA时长发送给终端 20; 终端 20, 用于才艮据接收到的专用随机接入前 导索引向基站 10发送随机接入请求。 在具体实施过程中 , 终端 20与基站 10发生上行失步时， 基站 10向终 端 20发送该终端 20的专用随机接入前导索引 , 终端 20接收专用随机接入 前导索引， 确定专用随机接入前导索 1对应的专用随机接入前导序列 , 终端 20向基站 10发送随机接入请求， 其中， 该随机接入请求中携带有专用随机 接入前导序列。 基站 10根据随机接入请求，为终端 20分配物理上行公共控制信道资源 和参考信号资源， 并为终端 20分配 TA时长。 基站 10的无线资源控制层将分配的物理上行公共控制信道资源、 参考 信号资源和 TA时长发送给基站 10的物理层， 基站 10的物理层将物理上行 公共控制信道资源、 参考信号资源和 TA时长转发给终端 20的物理层； 终端 20的物理层将物理上行公共控制信道资源、 参考信号资源和 TA时长转发给 终端 20的无线资源控制层。 终端 20接收到物理上行公共控制信道资源和参考信号资源后， 就可以 与基站 10正常进行通信了。 通过本发明实施例提供的随机接入系统， 网络侧将 PUCCH和 SRS资 源通过随机接入响应消息中发送给终端， 省去了相关技术中数据的复杂转发 过程， 解决了 UE与网络侧同步恢复处理占用时间长的问题， 缩短了数据传 输的时延， 减少了网络侧设备对硬件的需求， 提高了用户体验。 如上所述， 借助于本发明提供的随机接入方法和 /或系统， 通过将 PUCCH和 SRS资源通过随机接入响应消息中发送 , 省去了相关技术中数据 的复杂转发过程， 解决了的 UE处于失步状态时与网络侧同步恢复处理占用 时间长的问题， 缩短了数据传输的时延， 减少了网络侧设备对硬件的需求， 提高了用户体验 , 能够应用于流量很 d、或很大的业务。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本 领域的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的^^申和 原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护 范围之内。

Claims

权 利 要 求 书
1. 一种随机接入方法， 用于终端与网络侧发生失步的情况下为所述终端分 配资源， 其特征在于， 所述方法包括：
网络侧向所述终端发送该终端的专用随机接入前导索引； 所述终端根据接收到的所述专用随机接入前导索引向网络侧发送 随机接入请求；
网络侧根据所述随机接入请求 ,为所述终端分配物理上行公共控制 信道资源和参考信号资源， 并将分配的所述物理上行公共控制信道资源 和参考信号资源发送给所述终端。
2. 根据权利要求 1所述的方法， 其特征在于， 网络侧将分配的所述物理上 行公共控制信道资源和参考信号资源发送给所述终端包括：
网络侧的无线资源控制层将分配的所述物理上行公共控制信道资 源和参考信号资源发送给网络侧的物理层；
网络侧的物理层将所述物理上行公共控制信道资源和参考信号资 源转发给所述终端的物理层；
所述终端的物理层将所述物理上行公共控制信道资源和参考信号 资源转发给所述终端的无线资源控制层。
3. 根据权利要求 1或 2所述的方法， 其特征在于， 所述方法还包括： 网络侧才艮据所述随机接入请求 , 为所述终端分配 TA时长， 并将分 配的所述 TA时长发送给所述终端。
4. 根据权利要求 1或 2所述的方法， 其特征在于， 所述终端根据接收到的 所述专用随机接入前导索引向网络侧发送随机接入请求包括：
所述终端接收所述专用随机接入前导索引，确定所述专用随机接入 前导索 I对应的专用随机接入前导序列；
所述终端向网络侧发送所述随机接入请求， 其中， 所述随机接入请 求中携带有所述专用随机接入前导序列。 一种随机接入系统， 包括基站和终端， 其特征在于， 所述基站 , 用于向所述终端发送该终端的专用随机接入前导索引， 以及响应于来所述终端的随机接入请求为所述终端分配物理上行公共控 制信道资源和参考信号资源， 并将分配的所述物理上行公共控制信道资 源和参考信号资源发送给所述终端；
所述终端 ,用于才艮据接收到的所述专用随机接入前导索引向所述基 站发送所述随机接入请求。 根据权利要求 5所述的系统 , 其特征在于， 所述基站还用于根据所述随 机接入请求， 为所述终端分配 TA时长， 并将分配的所述 TA时长发送给 所述终端。
PCT/CN2009/073709 2008-12-31 2009-09-02 随机接入方法和系统 WO2010075701A1 (zh)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2620032A1 (en) * 2010-09-22 2013-07-31 Telefonaktiebolaget L M Ericsson (publ) Methods and arrangements for contention resolution in a communication system
US8855004B2 (en) 2010-09-22 2014-10-07 Telefonaktiebolaget L M Ericsson (Publ) Methods and arrangements for establishing a radio connection in a communication system
US9787449B2 (en) 2011-01-07 2017-10-10 Fujitsu Limited Method for triggering aperiodic sounding reference symbol, base station and user equipment

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101759940B1 (ko) 2010-11-03 2017-07-21 엘지전자 주식회사 광대역 무선 접속 시스템에서의 상향링크 전력 제어 방법
CN102651908B (zh) 2011-02-28 2015-01-21 华为技术有限公司 一种传输数据的方法及设备
CN103582112B (zh) 2012-08-08 2018-02-16 中兴通讯股份有限公司 一种时间提前量的确定方法、用户设备及基站
CN104581924A (zh) * 2013-10-28 2015-04-29 普天信息技术研究院有限公司 一种转换非竞争用户状态的方法
ES2672477T3 (es) * 2014-01-28 2018-06-14 Huawei Technologies Co., Ltd. Enfoque de dos etapas para proveer requisitos de mejora de cobertura entre una terminal y una estación base
CN104852787B (zh) * 2014-02-13 2020-04-10 电信科学技术研究院 竞争解决消息反馈信息的发送方法及装置
EP3254520B1 (en) 2015-03-03 2020-10-21 Huawei Technologies Co. Ltd. Device, node and methods in a wireless communication network
CN106453181B (zh) * 2015-08-07 2021-04-30 中兴通讯股份有限公司 一种信息处理方法、装置及系统
CN107113753A (zh) * 2015-08-12 2017-08-29 华为技术有限公司 一种发送上行信息的方法及装置
US20190254077A1 (en) * 2016-11-04 2019-08-15 Telefonaktiebolaget Lm Ericsson (Publ) Methods, devices and network nodes for performing an access procedure
US10897780B2 (en) * 2016-12-19 2021-01-19 Qualcomm Incorporated Random access channel (RACH) timing adjustment
CN112654095B (zh) 2017-01-05 2022-10-25 华为技术有限公司 传输数据的方法、网络设备和终端设备
CN109302745B (zh) * 2017-07-25 2020-08-28 大唐移动通信设备有限公司 一种频域资源的配置方法和基站
CN114630448A (zh) * 2017-08-10 2022-06-14 京瓷株式会社 通信控制方法
CN109495975A (zh) * 2017-09-11 2019-03-19 北京三星通信技术研究有限公司 随机接入方法、基站设备及用户设备
KR102588435B1 (ko) 2017-09-08 2023-10-12 삼성전자주식회사 리소스 결정, 리소스 구성, 랜덤 액세스 프리엠블 송신 및 랜덤 엑세스를 위한 방법 및 장치
CN109936873B (zh) * 2017-12-19 2022-08-02 珠海市魅族科技有限公司 一种配置定时提前量的方法及装置
CN110418419B (zh) * 2018-04-28 2022-03-25 中国移动通信有限公司研究院 一种随机接入方法、终端及网络设备
CN112770396B (zh) * 2019-11-04 2023-07-21 维沃移动通信有限公司 信息的处理方法和设备
CN113939000A (zh) * 2021-12-01 2022-01-14 江苏亨鑫众联通信技术有限公司 降低连接态终端消耗基站资源的方法、系统及存储介质

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008157839A2 (en) * 2007-06-21 2008-12-24 Qualcomm Incorporated Encryption of the scheduled uplink message in random access procedure
CN101478780A (zh) * 2008-01-04 2009-07-08 中兴通讯股份有限公司 一种蜂窝通讯系统中随机接入的方法
CN101478778A (zh) * 2008-01-04 2009-07-08 中兴通讯股份有限公司 一种蜂窝通讯系统随机接入方法及其参数传递的方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008038983A1 (en) * 2006-09-29 2008-04-03 Samsung Electronics Co., Ltd. Methods and apparatus for allocating cell radio network temporary identity
WO2008096959A1 (en) * 2007-02-06 2008-08-14 Lg Electronics Inc. Use of dedicated rach signatures
KR101033689B1 (ko) * 2007-03-15 2011-05-12 한국전자통신연구원 이동 통신 시스템에서의 프리앰블 할당 방법 및 임의 접속방법
EP2685778B1 (en) * 2007-06-06 2015-05-27 Sharp Kabushiki Kaisha Mobile communication system, base station apparatus and mobile station apparatus
EP2158699A2 (en) * 2007-06-15 2010-03-03 Electronics and Telecommunications Research Institute Downlink reception indication method in packet based mobile communication system
KR101486352B1 (ko) * 2007-06-18 2015-01-26 엘지전자 주식회사 무선 통신 시스템의 단말에서의 상향링크 동기 상태 제어방법
US8169992B2 (en) * 2007-08-08 2012-05-01 Telefonaktiebolaget Lm Ericsson (Publ) Uplink scrambling during random access
KR101519345B1 (ko) * 2008-01-01 2015-05-21 주식회사 팬택 랜덤 액세스 요청 송수신 및 랜덤 액세스 응답 송수신 방법
KR101468742B1 (ko) * 2008-05-06 2014-12-04 엘지전자 주식회사 무선통신 시스템에서 데이터 전송 방법
US20100074201A1 (en) * 2008-09-22 2010-03-25 Chih-Hsiang Wu Method for improving uplink signaling transmission for a wireless communications system and related communication device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008157839A2 (en) * 2007-06-21 2008-12-24 Qualcomm Incorporated Encryption of the scheduled uplink message in random access procedure
CN101478780A (zh) * 2008-01-04 2009-07-08 中兴通讯股份有限公司 一种蜂窝通讯系统中随机接入的方法
CN101478778A (zh) * 2008-01-04 2009-07-08 中兴通讯股份有限公司 一种蜂窝通讯系统随机接入方法及其参数传递的方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"physical lay aspects for evolved Universal Terrestrial Radio Access (UTRA) (Release 7)", 3GPP TR 25.814 V7.1.0, 30 September 2006 (2006-09-30), pages 82 - 86, XP050369161 *
See also references of EP2395787A4 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2620032A1 (en) * 2010-09-22 2013-07-31 Telefonaktiebolaget L M Ericsson (publ) Methods and arrangements for contention resolution in a communication system
EP2620032A4 (en) * 2010-09-22 2014-04-30 Ericsson Telefon Ab L M METHODS AND ARRANGEMENTS FOR RESOLVING ACCESS CONFLICT IN COMMUNICATION SYSTEM
US8855004B2 (en) 2010-09-22 2014-10-07 Telefonaktiebolaget L M Ericsson (Publ) Methods and arrangements for establishing a radio connection in a communication system
US9161373B2 (en) 2010-09-22 2015-10-13 Telefonaktiebolaget L M Ericsson (Publ) Methods and arrangements for contention resolution in a communication system
US9787449B2 (en) 2011-01-07 2017-10-10 Fujitsu Limited Method for triggering aperiodic sounding reference symbol, base station and user equipment

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