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WO2010017719A1 - 小区重选指示的发送方法和终端 - Google Patents

小区重选指示的发送方法和终端 Download PDF

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Publication number
WO2010017719A1
WO2010017719A1 PCT/CN2009/072126 CN2009072126W WO2010017719A1 WO 2010017719 A1 WO2010017719 A1 WO 2010017719A1 CN 2009072126 W CN2009072126 W CN 2009072126W WO 2010017719 A1 WO2010017719 A1 WO 2010017719A1
Authority
WO
WIPO (PCT)
Prior art keywords
cell
cell reselection
indication
terminal
resource
Prior art date
Application number
PCT/CN2009/072126
Other languages
English (en)
French (fr)
Inventor
陈慧
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
Publication of WO2010017719A1 publication Critical patent/WO2010017719A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/08—Access security
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and a terminal for transmitting a cell reselection indication. Background technique
  • CELL_FACH Cell Forward Access Channel
  • WCDMA Wideband Code Division Multiple Access
  • the CELL-FACH dog state enhancement mechanism is also introduced into UTRAN ( URA-PCH (UTRAN Registration Area Paging Channel) and CELL_PCH (Cell-Paging Channel) in Universal Mobile Telecommunication System Radio Access Network Paging and data transmission in the state.
  • URA-PCH UTRAN Registration Area Paging Channel
  • CELL_PCH Cell-Paging Channel
  • RACH Random Access Channel
  • FACH Forward Access Channel
  • PRACH Physical Random Access
  • the channel resource is the common channel resource of the cell, the PRACH channel resource is broadcast in the system message, and the terminal selects a specific PRACH channel through the physical random access procedure.
  • the base station does not need to schedule RACH channel resources, and the terminal reflects data priority control according to the ASC selection process.
  • the S-CCPCH (Secondary Common Control Physical Channel) channel of the FACH channel mapping is also a common channel resource, and the priority control of the data mapped to the FACH channel is performed by the RNC (Radio Network Controller).
  • the base station also does not need to schedule FACH channel resources. In the traditional CELL-FACH state, the terminal performs a cell reselection process.
  • the cell reselection refers to: the terminal autonomously measures the strength of the P-CCPCH (Primary Common Control Physical Channel) of the neighboring cell. If the R criterion of the cell reselection is met, the terminal does not need to report any information to the network. The measurement information or the indication information, the terminal autonomously performs cell reselection, and after completing the reselection, the terminal performs a cell update procedure in the new cell, and after the RNC receives the terminal cell update, changes the route of data transmission and reception. After the terminal satisfies the cell reselection criterion, the process from cell reselection to cell reselection takes a period of time.
  • P-CCPCH Primary Common Control Physical Channel
  • the terminal cannot receive any data information in the original cell.
  • the length of the time period for the terminal to perform cell reselection is at least one complete system message period. Once a certain segment of a system message block receives an error, the terminal needs to read the system message for a longer period of time; After that, a random access procedure is also needed in the new cell, for sending the cell update message to the RNC. It can be seen from the above process of cell reselection that if the network sends data to the terminal within the duration from the cell performing cell reselection to completing the cell reselection, data loss will result.
  • the uplink transmits data through the E-PUCH (Enhanced Physical Uplink Channel) channel, and the downlink passes the HS-PDSCH (High Speed Physical Downlink Shared Channel).
  • E-PUCH Enhanced Physical Uplink Channel
  • HS-PDSCH High Speed Physical Downlink Shared Channel
  • Node B Node B
  • TTI Transmission Time Interval
  • HARQ Hybrid Automatic Repeat Request
  • the enhanced CELL-FACH is compared to the traditional CELL-FACH state.
  • the status will be more serious.
  • the current cell on the network side transmitting data to the terminal may result in waste of resources and data loss.
  • the present invention is proposed by the current cell on the network side transmitting data to the terminal, which causes waste of resources and data loss.
  • the present invention aims to provide a method and a terminal for transmitting a cell reselection indication to solve the above problem.
  • a method of transmitting a cell reselection indication is provided.
  • the method for transmitting a cell reselection indication according to the present invention includes: before the cell reselection, the terminal sends a cell reselection indication to the current cell where the network side camps, and the cell reselection indication is used to notify the current cell terminal that the cell is to be used for cell weighting.
  • the terminal currently has an uplink 4 MANN resource, or sends a cell reselection indication on the uplink grant resource when there is an uplink grant resource after a delay; or when the terminal currently has downlink transmission, the terminal is related to the downlink transmission.
  • the connected high-speed-shared indication channel sends a cell reselection indication to the current cell; when the terminal does not have the uplink 4 MANN resources after the current or a delay, and the terminal does not currently have the downlink transmission, the terminal passes the system random access channel.
  • the resource sends a cell reselection indication to the current cell.
  • the terminal when the terminal sends the cell reselection indication by using the uplink 4 MANN resource or the system random access channel resource, uses the predetermined field of the scheduling information in the uplink information to identify the cell reselection indication.
  • the cell reselection indication is identified by setting the total buffer status field of the scheduling information to zero and setting the highest priority logical channel buffer status field to a non-zero value.
  • the terminal when the terminal sends the cell reselection indication through the high speed-shared indication channel, the cell reselection indication is identified by setting the recommended transport block length field in the uplink information to 0.
  • the terminal sending the cell reselection indication to the network side specifically includes the following: The terminal sends the uplink information to the current cell by using the uplink grant resource, and carries the cell therein Reselection indication; the terminal transmits uplink information to the current cell through the high speed-shared indication channel associated with the downlink transmission, and carries the cell reselection indication therein.
  • the method further includes: the current cell receiving the cell reselection indication, and sending the cell reselection indication to the radio network controller.
  • a terminal is provided.
  • the terminal includes: a sending module, configured to send a cell reselection indication to a current cell where the network side camps before performing cell reselection, where the cell reselection indication is used to notify the current cell terminal that cell reselection is to be performed;
  • the sending module includes: a first sending submodule, configured to send a cell reselection indication on an uplink grant resource when there is an uplink grant resource, or a uplink grant resource after a delay; the second sending submodule, For transmitting, in the case of the current downlink transmission, the cell reselection indication is sent to the current cell by using the high speed-shared indication channel associated with the downlink transmission; the third sending submodule is configured to have neither the current or a time delay If the uplink 4 MANN resource does not currently have downlink transmission, the cell reselection indication is sent to the current cell by using the system random access channel resource.
  • the method for transmitting a cell reselection indication is used to solve the problem that in the current cell reselection process, since the terminal cannot receive data from the current cell, the current cell on the network side sends data to the terminal.
  • the waste of resources and the loss of data which in turn reduces the cost of resources.
  • FIG. 1 is a detailed flowchart of a method for transmitting a cell reselection indication according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of content of scheduling information used to implement an embodiment of the present invention
  • FIG. 4 is a schematic diagram of information on an HS-SICH channel for implementing an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a terminal according to an embodiment of the present invention; Figure.
  • the current terminal User Equipment, UE for short
  • the current cell to the UE on the network side is not available because the UE cannot receive data from the current cell.
  • the present invention provides a proposed mechanism for transmitting data, which causes waste of resources and data loss.
  • the present invention provides a transmission scheme for cell reselection indication, which is used before the UE performs cell reselection.
  • the method of sending a cell reselection indication is to avoid the loss of user data during the reselection process, and to minimize the waste of shared resources caused by the situation.
  • the invention will be described in detail below with reference to the drawings in conjunction with the embodiments. According to an embodiment of the present invention, a method of transmitting a cell reselection indication is provided.
  • the method includes: before the cell reselection, the UE sends a cell reselection indication to the current cell where the network side camps on the network side, where the cell reselection indication is used to notify the current cell that the UE is to perform cell reselection; thereafter, the current cell receives the cell weight The indication is selected and the cell reselection indication is sent to the RNC.
  • the UE sends a cell reselection indication to the current cell on the network side before the cell reselection is performed, which may prevent the network side from subsequently transmitting data to the UE, causing resource waste and data loss.
  • the UE when the UE sends a cell reselection indication to the current cell that the network side camps on, the UE may have multiple uplink resource conditions, for example, the UE currently has an uplink grant resource, or has an uplink after a delay. 4 MANN resources, the UE currently has downlink transmission, the UE currently has uplink 4 ⁇ resources and downlink transmission, the UE does not currently have uplink 4 ⁇ resources, and does not have downlink transmission.
  • the above possibilities are The situation exists in detail.
  • the implementation process of the present invention will be described in detail below by taking the TD-SCDMA system as an example.
  • Step S102 A UE performs a same cell reselection criterion as an existing protocol (ie, , R criterion;), after the measurement determines that the condition of the cell reselection is satisfied, proceeds to step S104; Step S104, the UE sends a cell reselection to the base station Node B (ie, the current cell on the network side) before performing cell reselection Instructions.
  • Step S106 The Node B receives the cell reselection indication, and sends a cell reselection indication to the RNC.
  • the Node B may indicate to the RNC through the control plane signaling or the user plane control frame that the UE is to perform cell reselection.
  • Downlink data transmission on the RAN (Radio Access Network) side The starting point is at the RNC. Therefore, after the Node B receives the cell reselection indication from the UE, the information needs to be sent to the RNC, so that the RNC can stop sending the downlink data of the UE to the Node B, and the Node B itself must stop.
  • the uplink resource of the UE is 4 MANN, and the implementation process reduces the fee of the resource.
  • the UE may have multiple uplink resource conditions.
  • the UE may send a 'j, zone reselection indication to the Node B in different manners. For each possible situation, the following The process in which the UE sends a 'j, zone reselection indication to the Node B is described in detail.
  • the UE currently has an uplink E-PUCH grant resource, and the UE can send uplink information to the current cell where the network side camps by the UE, and carry the cell reselection indication therein.
  • the UE currently has no uplink E-PUCH 4 Manpower resources, but has an uplink after a delay time.
  • the E-PUCH grants the resource, and the UE can send the uplink information to the current cell where the network side resides by the UE, and carry the cell reselection indication therein.
  • the E-PUCH resource is a shared resource
  • the base station sends the E-PUCH 4 Manpower resource to the UE through an E-AGCH (Enhanced Absolute Grant Channel).
  • the UE may wait for a period of time, and when the E-PUCH resource timing arrives Send a cell reselection indication.
  • the UE may send a cell reselection indication through the E-PUCH resource. The process is described in detail below.
  • the E-PUCH channel can also carry uplink control information (ie, scheduling information).
  • scheduling information includes: SNPL service/neighbor cell path loss (5 bits), UPH uplink power margin (5 bits), It also includes the TEBS total buffer status (5 bits) corresponding to the buffer occupancy information BO, the HLBS highest priority logical channel buffer status (4 bits), and the HLID highest priority logical channel ID (4 bits), in scheduling
  • no reserved bits may be used, and some fields of the scheduling information may be specifically filled to identify the cell reselection indication, that is, the predetermined field of the scheduling information in the uplink information is used to identify the cell reselection indication, for example, " Total buffer status" Set to 0, and set the "highest priority logical channel buffer state" to a non-zero value to indicate the cell reselection indication.
  • the UE currently has downlink HS-DSCH transmission, and can forward to the current cell where the network side resides through the feedback channel HS-SICH (High Speed Shared Indication Channel) associated with the downlink HS-DSCH transmission.
  • the uplink information is sent and carries a cell reselection indication therein.
  • 3 is a schematic diagram of an HS-DSCH transmission process for implementing an embodiment of the present invention. As shown in FIG.
  • the timing relationship of each channel in the HS-DSCH channel transmission is as follows:
  • UE information is read HS-SCCH channel, code channel and time slot information indicating that the UE on HS-SCCH i.e. ⁇ 1 then "the HS-PDSCH (High Speed Physical Downlink Shared Channel, high-speed downlink shared physical channel) Channel resource, modulation mode, and transport block length indicate the transport format.
  • the UE receives data on the designated HS-PDSCH channel, and performs HARQ feedback to the Node B on the HS-SICH channel after the specified timing time nHS-SICH.
  • the UE has a time of 3 subframes between the HS-SCCH and the HS-SICH feedback timing. If the UE determines that the condition of the cell reselection is satisfied in the time, the UE may perform a cell reselection indication on the HS-SICH channel.
  • . 4 is a schematic diagram of information on an HS-SICH channel for implementing an embodiment of the present invention. As shown in FIG. 4, the information on the HS-SICH channel includes: a recommended modulation scheme (1 bit), a recommended transport block length.
  • the "recommended transport block length” field can be used to identify the cell reselection indication to the Node B, specifically, currently “recommended”
  • the value of the transport block length "field” ranges from 1-63, and the value of the "Recommended Transport Block Length” field can be used to identify the cell reselection indication.
  • case (1) and case (3) it may occur in parallel, that is, the UE has both the uplink E-PUCH resource and the downlink transmission. In this case, the UE may use the above case (1) or case (3). Either way, a cell reselection indication is sent to the current cell on the network side.
  • the UE does not have the uplink/downlink shared resource, that is, the UE does not currently have the uplink grant resource and does not have the downlink transmission. At this time, the UE can only use the system random access channel resource to the current side of the network side.
  • the cell transmits uplink information and carries a cell reselection indication therein. Specifically, when the UE has neither available uplink E-PUCH resources nor downlink HS-DSCH transmission When transmitting, the UE needs to send a cell reselection to the current cell on the network side through the system random access channel resource. When it is , the UE can use an E-RUCCH (Enhanced Random Uplink Control Channel).
  • E-RUCCH Enhanced Random Uplink Control Channel
  • the E-RUCCH channel is a channel used by the UE to send scheduling information to the Node B when the UE does not have 4 MANN resources but the UE needs to transmit data in the HSRUA (High Speed Uplink Packet Access).
  • HSRUA High Speed Uplink Packet Access
  • - The scheduling information and the identity of the UE on the RUCCH channel.
  • the same method as transmitting the cell reselection indication on the E-PUCH may be used, that is, the case ( 1) The method used, set the "Total Buffer Status" to 0, and set the "Highest Priority Logical Buffer Buffer Status" to a non-zero value to identify the ' ⁇ , zone reselection indication.
  • FIG. 5 is a structural block diagram of a terminal according to an embodiment of the present invention.
  • the terminal includes: a sending module, configured to Before the cell reselection, the cell reselection indication is sent to the current cell where the network side camps, and the cell reselection indication is used to notify the current cell terminal that the cell reselection is to be performed.
  • the sending module includes: Second round The sub-module 4 and the third sending sub-module 6 are described below.
  • the first transmitting sub-module 2 is configured to have an uplink grant resource or a uplink 4 MANN resource after a delay.
  • the third sending sub-module 6 is configured to send a cell reselection indication to the current cell by using the system random access channel resource in the case that the current or a period of time delay has neither the uplink grant resource nor the downlink transmission.
  • the terminal when the terminal sends the cell reselection indication by using the first sending submodule 2 or the third sending submodule 6, the terminal uses the predetermined field of the scheduling information in the uplink information to identify the cell reselection indication, where the scheduling information is The total buffer status field is set to 0, and the highest priority logical channel buffer status field is set to a non-zero value to identify the cell weight.
  • the terminal sends the cell reselection indication through the second sending submodule 4, the terminal identifies the cell reselection indication by setting the recommended transport block length field in the uplink information to 0.
  • the terminal sending the cell reselection indication to the network side specifically includes one of the following: (1) The terminal sends uplink information to the current cell through the first sending submodule 2, and carries a cell reselection indication therein.
  • the terminal sends uplink information to the current cell through the second sending submodule 4, and carries a cell reselection indication therein.
  • the current cell receives the cell reselection indication, and sends the cell reselection indication to the radio network controller.
  • the method for sending a cell reselection indication is used to solve the problem that in the current UE performing cell reselection, since the UE cannot receive data from the current cell, the current cell on the network side sends the current cell to the UE. Data can lead to wasted resources and data loss, which in turn reduces the waste of resources.
  • the UE indicates to the network side that the UE is to use the uplink grant resource or the downlink control related uplink control channel preferentially when performing cell reselection. Since these channels are all controlled by closed loop power, interference to adjacent cells can be reduced. It can also avoid waste of random access resources to the system.
  • the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices.
  • the invention is not limited to any particular combination of hardware and software.
  • the above are only the preferred embodiments of the present invention, and are 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 spirit and scope of the present invention are intended to be included within the scope of the present invention.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mobile Radio Communication Systems (AREA)

Description

小区重选指示的发送方法和终端
技术领域 本发明涉及通信领域， 具体而言， 涉及一种小区重选指示的发送方法和 终端。 背景技术
3GPP ( 3rd Generation Partnership Project, 第三 4弋移动通信伙伴组织） 在 Rel-7版本中完成了 WCDMA ( Wideband Code Division Multiple Access , 宽带码分多址接入 ) 系统中 CELL_FACH ( Cell Forward Access Channel, 小 区―前向接入信道） 状态增强的标准化工作。 CELL— FACH状态增强通过在 CELL— FACH状态引入 HS-DSCH ( High
Speed Downlink Shared Channel , 高速-下行共享信道） 来增强该状态的分组 数据传输性能， 使其获得较小的分组传输时延和较高的传输速率， CELL— FACH 犬态增强机制也引入到 了 UTRAN ( Universal Mobile Telecommunication System Radio Access Network, 全球移动通信系统无线接 入网） 中的 URA— PCH ( UTRAN Registration Area Paging Channel, UTRAN 注册区—寻呼信道） 及 CELL_PCH ( Cell Paging Channel , 小区—寻呼信道） 状态下的寻呼和数据传输。 在传统的 CELL_FACH 态下， 终端通过 RACH ( Random Access Channel , 机接入信道）发送上行数据，通过 FACH( Forward Access Channel, 前向接入信道 )接收下行数据， RACH信道映射的 PRACH ( Physical Random Access Channel , 物理随机接入信道） 信道资源是小区的公共信道资源， PRACH 信道资源在系统消息中广播， 终端通过物理随机接入过程选择具体 的一条 PRACH信道。 基站不需要对 RACH信道资源进行调度， 终端根据 ASC选择过程体现数据优先级控制。 FACH信道映射的 S-CCPCH( Secondary Common Control Physical Channel, 辅助-公共控制物理信道） 信道也是公共 信道资源， 映射到 FACH信道的数据的优先级控制由 RNC ( Radio Network Controller, 无线网络控制器）执行， 基站同样不需要对 FACH信道资源进行 调度。 在传统的 CELL— FACH 状态下， 终端执行小区重选过程。 小区重选是 指： 终端自主对邻小区的 P-CCPCH ( Primary Common Control Physical Channel, 主-公共控制物理信道） 的强度进行测量， 如果满足小区重选的 R 准则， 则终端无需向网络上报任何测量信息或者指示信息， 终端自主地进行 小区重选， 在完成重选之后， 终端在新的小区执行小区更新过程， 在 RNC 接收到终端小区更新之后， 改变数据发送和接收的路由。 在终端满足小区重 选准则之后， 从执行小区重选到完成小区重选的过程是需要一段时间的， 在 终端执行重选的过程中， 终端无法在原小区接收任何数据信息。 终端执行小区重选的时间段长度至少是一个完整的系统消息周期，一旦 某个系统消息块的某个分段接收错误， 终端需要读取系统消息的时间更长； 在终端完成系统消息读取之后， 还需要在新的小区进行随机接入过程， 用于 将小区更新消息发送给 RNC。 从上述小区重选的过程中可以看出，从终端执行小区重选到完成小区重 选的持续时间之内， 如果网络向终端发送数据， 则会导致数据丢失。 然而， 在传统 CELL-FACH状态下， RACH信道和 FACH信道的速率比较氏， 终端 即使使用小区重选的方式也不会导致数据的大量丢失。 在增强后的 CELL— FACH 犬态下，上行通过 E-PUCH( Enhanced Physical Uplink Channel, 增强-物理上行信道） 信道发送数据， 下行通过 HS-PDSCH ( High Speed Physical Downlink Shared Channel, 高速 -物理下行共享信道 ) 接收数据， 这些信道资源均由 Node B (节点 B )调度和控制， 这些信道由于 釆用了短 TTI ( Transmission Time Interval, 传输时间间隔；)、 HARQ ( Hybrid Automatic Repeat Request, 混合自动重传请求） 等先进技术， 上行数据峰值 速率和下行数据峰值速率将会明显提升。如果终端仍然自主地执行小区重选， 并且终端在执行小区重选的过程中， 基站对终端进行调度， 资源浪费以及数 据丢失的问题， 相比于传统 CELL— FACH状态， 增强后的 CELL— FACH状态 会更严重。 在目前的终端进行小区重选过程中，由于终端不能接收到来自当前小区 的数据， 因此网络侧的当前小区向终端发送数据会导致资源浪费、 以及数据 丢失。 发明内容 针对在目前的终端进行小区重选过程中，由于终端不能接收到来自当前 小区的数据， 因此网络侧的当前小区向终端发送数据会导致资源浪费、 以及 数据丢失的问题而提出本发明， 为此， 本发明旨在提供一种小区重选指示的 发送方法和终端， 以解决上述问题。 才艮据本发明的一个方面， 提供了一种小区重选指示的发送方法。 根据本发明的小区重选指示的发送方法包括： 终端在进行小区重选之 前， 向网络侧其驻留的当前小区发送小区重选指示， 小区重选指示用于通知 当前小区终端将要进行小区重选； 终端当前具有上行 4曼权资源， 或者在一段 时延之后具有上行授权资源时在上行授权资源上发送小区重选指示； 或者在 终端当前具有下行传输的情况下，终端通过与下行传输相关联的高速-共享指 示信道向当前小区发送小区重选指示； 当终端当前或一段时延后既不具有上 行 4曼权资源， 当前也不具有下行传输的情况下， 终端通过系统随机接入信道 资源向当前小区发送小区重选指示。 优选地，终端通过上行 4曼权资源或系统随机接入信道资源发送小区重选 指示时， 使用上行信息中调度信息的预定字段来标识小区重选指示。 优选地， 通过将调度信息的总緩冲区状态字段设置为 0, 并将最高优先 级逻辑信道緩冲区状态字段设置为非 0值， 来标识小区重选指示。 优选地， 终端通过高速-共享指示信道发送小区重选指示时， 通过将上 行信息中的推荐的传输块长度字段设置为 0, 来标识小区重选指示。 优选地， 在终端当前同时具有上行授权资源和下行传输的情况下， 终端 向网络侧发送小区重选指示具体包括以下之一： 终端通过上行授权资源向当 前小区发送上行信息， 并在其中携带小区重选指示； 终端通过与下行传输相 关联的高速-共享指示信道向当前小区发送上行信息，并在其中携带小区重选 指示。 优选地， 在终端向当前小区发送小区重选指示之后， 上述方法进一步包 括： 当前小区接收小区重选指示， 并将小区重选指示发送给无线网络控制器。 才艮据本发明的另一个方面， 提供了一种终端。 根据本发明的终端包括： 发送模块， 用于在进行小区重选之前， 向网络 侧其驻留的当前小区发送小区重选指示， 小区重选指示用于通知当前小区终 端将要进行小区重选； 其中， 发送模块包括： 第一发送子模块， 用于在当前 具有上行授权资源， 或者在一段时延之后具有上行授权资源时， 在上行授权 资源上发送小区重选指示； 第二发送子模块， 用于在当前具有下行传输的情 况下，通过与下行传输相关联的高速-共享指示信道向当前小区发送小区重选 指示； 第三发送子模块， 用于在当前或一段时延后既不具有上行 4曼权资源， 当前也不具有下行传输的情况下， 通过系统随机接入信道资源向当前小区发 送小区重选指示。 通过本发明， 釆用发送小区重选指示的方法， 解决了在目前的终端进行 小区重选过程中， 由于终端不能接收到来自当前小区的数据， 因此网络侧的 当前小区向终端发送数据会导致资源浪费、 以及数据丢失的问题， 进而减少 了资源的^^费。 附图说明 此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部 分， 本发明的示意性实施例及其说明用于解释本发明， 并不构成对本发明的 不当限定。 在附图中： 图 1是才艮据本发明实施例的小区重选指示的发送方法的详细流程图； 图 2是用于实施本发明实施例的调度信息的内容的示意图； 图 3是用于实施本发明实施例的 HS-DSCH传输过程的示意图； 图 4是用于实施本发明实施例的 HS-SICH信道上的信息的示意图； 图 5是才艮据本发明实施例的终端的结构 图。 具体实施方式 功能相无述 基于在目前的终端 （User Equipment, 简称为 UE ) 进行小区重选过程 中， 由于 UE不能接收到来自当前小区的数据， 因此网络侧的当前小区向 UE 发送数据会导致资源浪费、 以及数据丢失的问题， 本发明了提供了一种建议 的机制， 即， 本发明提供了一种小区重选指示的发送方案， 在 UE进行小区 重选之前，釆用发送小区重选指示的方法来避免重选过程中用户数据的丢失， 尽量减少该种情况 I起的共享资源的浪费。 下面将参考附图并结合实施例来详细说明本发明。 才艮据本发明的实施例， 提供了一种小区重选指示的发送方法。 该方法包 括： UE 在发生小区重选之前， 向网络侧其驻留的当前小区发送小区重选指 示， 小区重选指示用于通知当前小区 UE将要进行小区重选； 此后， 当前小 区接收小区重选指示， 并将小区重选指示发送给 RNC。 通过该实施例， UE在执行小区重选之前， 向网络侧的当前小区发送小 区重选指示， 可以避免网络侧后续向 UE发送数据而造成资源浪费和数据丢 失。 在具体实施过程中， 当 UE向网络侧其驻留的当前小区发送小区重选指 示时， UE可能有多种上行资源情况， 例如： UE当前具有上行授权资源， 或 者在一段时延之后具有上行 4曼权资源、 UE当前具有下行传输、 UE当前同时 具有上行 4吏权资源和下行传输、 UE 当前既不具有上行 4吏权资源， 也不具有 下行传输， 在下面实施例中将对上述可能存在的情况进行详细描述。 下面以 TD-SCDMA系统为例对本发明的实现过程进行详细描述。 图 1是才艮据本发明实施例的小区重选指示的发送方法的详细流程图，如 图 1所示， 该方法包括： 步骤 S102, UE执行同现有协议相同的小区重选准则 （即， R准则；)， 在测量确定满足小区重选的条件之后， 进行至步骤 S104; 步骤 S104, UE在执行小区重选之前， 向基站 Node B (即， 网络侧的 当前小区） 发送小区重选指示。 步骤 S106, Node B接收小区重选指示，并将小区重选指示发送给 RNC。 优选地， Node B可以通过控制面信令或用户面控制帧向 RNC指示 UE将要 进行小区重选。 由于 RAN ( Radio Access Network, 无线接入网） 侧的下行数据发送的 起点在 RNC , 因而当 Node B接收到来自 UE的小区重选指示之后， 需要将 此信息发送到 RNC, 这样 RNC可以停止向 Node B发送该 UE的下行数据， 同时， Node B本身也要停止对该 UE的上行资源 4曼权， 通过该实施过程， 减 少了资源的^ ^费。 在步骤 S104 中， UE可能有多种上行资源情况， 对于每种不同的上行 资源， UE可以使用不同的方式向 Node B发送' j、区重选指示， 以下针对每种 可能存在的情况， 对 UE向 Node B发送 ' j、区重选指示的过程进行详细描述。
( 1 ) UE当前具有上行 E-PUCH授权资源， UE可以通过该资源向网络 侧其驻留的当前小区发送上行信息， 并在其中携带小区重选指示。 ( 2 ) UE 当前无上行 E-PUCH 4曼权资源， 但一段延时时间后具有上行
E-PUCH授权资源， UE可以通过该资源向网络侧其驻留的当前小区发送上行 信息， 并在其中携带小区重选指示。 具体地， E-PUCH 资源是共享资源， 基站通过 E-AGCH ( Enhanced Absolute Grant Channel,增强 -绝对 4曼权信道 )为 UE发送 E-PUCH 4曼权资源。 E-AGCH信道上的 RDI ( Resource Duration Indication, 资源持续时间指示 ) 信息字段可以指定 UE使用该资源的 TTI个数和时间间隔， 例如， 当 RDI=6 时， 共 4曼权 UE 4个 TTI的 E-PUCH资源， 每个 TTI资源之间间隔 3个子帧。 当 UE测量判断满足小区重新准则时， 如果当前 TTI没有 E-PUCH资源， 但 是， 在一段延时之后， UE具有 E-PUCH资源时， UE可以等待一段时间， 并 在 E-PUCH资源时序到来时发送小区重选指示。 在上述的情况（ 1 )和情况（ 2 ) 中， 都是 UE可以通过 E-PUCH资源发 送小区重选指示。 下面对该过程进行详细描述。
E-PUCH信道除了可以承载数据之外， 还可以承载上行控制信息 （即， 调度信息）。 图 2 是用于实施本发明实施例的调度信息的内容的示意图， 如 图 2所示， 调度信息包括： SNPL服务 /邻小区路损 （5比特）、 UPH上行功 率余量（ 5比特）， 还包括緩冲区占用信息 BO对应的 TEBS总緩冲区状态（ 5 比特）、 HLBS最高优先级逻辑信道緩冲区状态 （ 4比特）、 HLID最高优先级 逻辑信道 ID ( 4 比特）， 在调度信息中， 没有保留位可以使用， 可以利用对 调度信息的某些字段进行特殊填写来标识小区重选指示， 即， 使用上行信息 中调度信息的预定字段来标识小区重选指示， 例如， 将 "总緩冲区状态" 设 置为 0, 并且将 "最高优先级逻辑信道緩冲区状态" 设置为一个非 0值， 来 表示小区重选指示。
( 3 ) UE当前具有下行 HS-DSCH传输， 可以通过与下行 HS-DSCH传 输相关联的反馈信道 HS-SICH ( High Speed Shared Indication Channel, 高速- 共享指示信道） 向网络侧其驻留的当前小区发送上行信息， 并在其中携带小 区重选指示。 图 3是用于实施本发明实施例的 HS-DSCH传输过程的示意图， 如图 3 所示， HS-DSCH信道传输中各信道的时序关系如下： 当 UE检测到指向 UE 的 HS-SCCH ( High Speed Shared Control Channel, 高速共享控制信道 ) 时， UE就读取 HS-SCCH信道上的信息， HS-SCCH上的码道和时隙信息指示 UE 即^1接》 的 HS-PDSCH ( High Speed Physical Downlink Shared Channel, 高速 下行共享物理信道） 信道资源、 调制方式和传输块长度指示传输格式。 在规 定的定时时间 nHS-SCCH之后， UE在指定的 HS-PDSCH信道上接收数据， 并在指定的定时时间 nHS-SICH之后， 在 HS-SICH信道上向 Node B进行 HARQ反馈。 UE接》 到 HS-SCCH到 HS-SICH反馈时序之间有 3个子帧的 时间， 如果在该时间中， UE确定满足小区重选的条件， UE可以在 HS-SICH 信道上进行小区重选指示。 图 4是用于实施本发明实施例的 HS-SICH信道上的信息的示意图， 如 图 4所示， HS-SICH信道上的信息包括： 推荐的调制方式（ 1比特）、 推荐的 传输块长度 ( 6比特）、 混合自动重传请求反馈 ( 1比特）， 在 HS-SICH信道 结构中， 可以利用 "推荐的传输块长度" 字段来向 Node B标识小区重选指 示， 具体地， 目前 "推荐的传输块长度"字段取值范围为 1-63 , 可以利用 "推 荐的传输块长度" 字段取值为 0来标识小区重选指示。 对于上述的情况（ 1 )和情况（ 3 )可能并行发生，即， UE既有上行 E-PUCH 资源、 又有下行传输， 此时， UE 可以釆用上述情况 （1 ) 或者情况 （3 ) 的 任何一种方式向网络侧的当前小区发送小区重选指示。
( 4 ) UE不具有上 /下行共享资源， 即， UE当前既不具有上行授权资源， 也不具有下行传输， 此时， UE 只能通过系统随机接入信道资源向网络侧其 驻留的当前小区发送上行信息， 并在其中携带小区重选指示。 具体地， 当 UE既无可用的上行 E-PUCH资源、 也无下行 HS-DSCH传 输时， UE 需要通过系统随机接入信道资源向网络侧的当前小区发送小区重 选才旨示。 it匕时， UE可以使用 E-RUCCH ( Enhanced Random Uplink Control Channel, 增强 -随机接入上行控制信道）。 E-RUCCH 信道是 HSUPA ( High Speed Uplink Packet Access,高速上行分组接入 M专输中当 UE没有 4曼权资源、 但 UE需要传输数据时， UE向 Node B发送调度信息时使用的信道， E-RUCCH 信道上 7|载调度信息和 UE的标识。 当 UE通过 E-RUCCH向 Node B发送小 区重选指示时， 可以使用和 E-PUCH上传输小区重选指示相同的方法， 即， 情况（1 ) 所釆用的方法， 将 "总緩冲区状态" 设置为 0, 并将 "最高优先级 逻辑信道緩冲区状态" 设置为一个非 0值， 来标识 '』、区重选指示。 装置实施例 才艮据本发明的实施例， 提供了一种终端。 图 5是才艮据本发明实施例的终 端的结构框图， 如图 5所示， 该终端包括： 发送模块， 用于在进行小区重选 之前， 向网络侧其驻留的当前小区发送小区重选指示， 小区重选指示用于通 知当前小区终端将要进行小区重选。 其中， 发送模块包括： 第一发送子模块 2、 第二发送子模块 4、 第三发 送子模块 6, 下面对上述结构进行描述。 第一发送子模块 2, 用于在当前具有上行授权资源， 或者在一段时延之 后具有上行 4曼权资源时， 在上行 4曼权资源上发送小区重选指示； 第二发送子 模块 4, 用于在当前具有下行传输的情况下， 通过与下行传输相关联的高速- 共享指示信道向当前小区发送小区重选指示； 第三发送子模块 6, 用于在当 前或一段时延后既不具有上行授权资源， 当前也不具有下行传输的情况下， 通过系统随机接入信道资源向当前小区发送小区重选指示。 需要说明的是，终端通过第一发送子模块 2或第三发送子模块 6发送小 区重选指示时， 使用上行信息中调度信息的预定字段来标识小区重选指示， 其中， 通过将调度信息的总緩冲区状态字段设置为 0, 并将最高优先级逻辑 信道緩冲区状态字段设置为非 0值， 来标识小区重选指示。 终端通过第二发送子模块 4发送小区重选指示时，通过将上行信息中的 推荐的传输块长度字段设置为 0, 来标识小区重选指示。 需要说明的是， 在终端当前同时具有上行授权资源和下行传输的情况 下， 终端向网络侧发送小区重选指示具体包括以下之一： ( 1 ) 终端通过第一发送子模块 2向当前小区发送上行信息， 并在其中 携带小区重选指示。
( 2 ) 终端通过第二发送子模块 4向当前小区发送上行信息， 并在其中 携带小区重选指示。 在终端向当前小区发送小区重选指示之后， 当前小区接收小区重选指 示， 并将小区重选指示发送给无线网络控制器。 通过本发明的实施例， 釆用发送小区重选指示的方法， 解决了在目前的 UE进行小区重选过程中， 由于 UE不能接收到来自当前小区的数据， 因此网 络侧的当前小区向 UE发送数据会导致资源浪费、 以及数据丢失的问题， 进 而减少了资源的'浪费。 此外， UE向网络侧指示 UE将要进行小区重选时优先使用上行授权资 源或下行传输相关的上行控制信道， 由于这些信道都是受闭环功率控制的， 因而可以减小对相邻小区的干扰， 还可以避免对系统随机接入资源的浪费。 显然， 本领域的技术人员应该明白， 上述的本发明的各模块或各步骤可 以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， 或者分布 在多个计算装置所组成的网络上， 可选地， 它们可以用计算装置可执行的程 序代码来实现， 从而， 可以将它们存储在存储装置中由计算装置来执行， 或 者将它们分别制作成各个集成电路模块， 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。 以上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。 凡在本发明的精神和原则 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. 一种小区重选指示的发送方法， 其特征在于， 包括：
终端在进行小区重选之前，向网络侧其驻留的当前小区发送小区重 选指示， 所述小区重选指示用于通知所述当前小区所述终端将要进行小 区重选；
所述终端当前具有上行授权资源，或者在一段时延之后具有上行授 权资源时在所述上行 4曼权资源上发送所述小区重选指示； 或者在所述终 端当前具有下行传输的情况下， 所述终端通过与所述下行传输相关联的 高速-共享指示信道向所述当前小区发送所述小区重选指示； 当所述终端 当前或一段时延后既不具有上行 4曼权资源， 当前也不具有下行传输的情 况下， 所述终端通过系统随机接入信道资源向所述当前小区发送所述小 区重选指示。
2. 根据权利要求 1所述的方法， 其特征在于， 所述终端通过上行授权资源 或系统随机接入信道资源发送所述小区重选指示时， 使用上行信息中调 度信息的预定字段来标识所述小区重选指示。
3. 根据权利要求 2所述的方法， 其特征在于， 通过将所述调度信息的总緩 冲区状态字段设置为 0, 并将最高优先级逻辑信道緩冲区状态字段设置 为非 0值， 来标识所述小区重选指示。
4. 才艮据权利要求 1所述的方法， 其特征在于， 所述终端通过高速-共享指示 信道发送小区重选指示时， 通过将上行信息中的推荐的传输块长度字段 设置为 0, 来标识所述小区重选指示。
5. 根据权利要求 1所述的方法， 其特征在于， 在所述终端当前同时具有上 行 4曼权资源和下行传输的情况下， 所述终端向网络侧发送小区重选指示 具体包括以下之一：
所述终端通过所述上行 4曼权资源向所述当前小区发送上行信息，并 在其中携带所述小区重选指示；
所述终端通过与所述下行传输相关联的高速-共享指示信道向所述 当前小区发送上行信息， 并在其中携带所述小区重选指示。
6. 根据权利要求 1至 5中任一项所述的方法， 其特征在于， 在所述终端向 所述当前小区发送小区重选指示之后， 所述方法进一步包括：
所述当前小区接收所述小区重选指示，并将所述小区重选指示发送 给无线网络控制器。
7. 一种终端， 其特征在于， 包括：
发送模块， 用于在进行小区重选之前， 向网络侧其驻留的当前小区 发送小区重选指示， 所述小区重选指示用于通知所述当前小区所述终端 将要进行小区重选；
其中， 所述发送模块包括：
第一发送子模块， 用于在当前具有上行授权资源， 或者在一段时延 之后具有上行 4曼权资源时， 在所述上行 4曼权资源上发送所述小区重选指 示；
第二发送子模块， 用于在当前具有下行传输的情况下， 通过与所述 下行传输相关联的高速-共享指示信道向所述当前小区发送所述小区重 选指示；
第三发送子模块， 用于在当前或一段时延后既不具有上行授权资 源， 当前也不具有下行传输的情况下， 通过系统随机接入信道资源向所 述当前小区发送所述小区重选指示。
PCT/CN2009/072126 2008-08-12 2009-06-04 小区重选指示的发送方法和终端 WO2010017719A1 (zh)

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