WO2010017719A1 - Procédé d’émission pour indication de resélection de cellule et terminal - Google Patents

Procédé d’émission pour indication de resélection de cellule et terminal 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
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WO
WIPO (PCT)
Prior art keywords
cell
cell reselection
indication
terminal
resource
Prior art date
Application number
PCT/CN2009/072126
Other languages
English (en)
Chinese (zh)
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/fr

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Classifications

    • 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
    • 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
    • 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, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]

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.

Abstract

L'invention concerne un procédé d’émission pour une indication de resélection de cellule, le procédé comportant les étapes suivantes : avant d’effectuer la resélection de cellule, le terminal émet l’indication de resélection de cellule vers la cellule courante côté réseau à laquelle il appartient, l’indication de resélection de cellule est utilisée pour informer la cellule courante que le terminal va effectuer une resélection de cellule ; à condition que le terminal dispose à l’instant considéré ou à un instant ultérieur d’une ressource d’autorisation en voie montante, l’indication de resélection de cellule est transmise par le biais de la ressource d’autorisation en voie montante ; en variante, à condition que le terminal dispose à l’instant considéré d’une émission en voie descendante, le terminal envoie l’indication de resélection de cellule à la cellule courante par le canal d’indication partagé à grande vitesse associé à l’émission en voie descendante ; dans le cas où le terminal ne dispose pas d’une ressource d’autorisation en voie montante à l’instant considéré ni à un instant ultérieur, et ne dispose pas à l’instant considéré d’une émission en voie descendante, le terminal envoie l’indication de resélection de cellule à la cellule courante par la ressource de canal à accès aléatoire du système. La présente invention est capable de réduire le gaspillage des ressources.
PCT/CN2009/072126 2008-08-12 2009-06-04 Procédé d’émission pour indication de resélection de cellule et terminal WO2010017719A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200810210697A CN101651910A (zh) 2008-08-12 2008-08-12 小区重选指示的发送方法
CN200810210697.X 2008-08-12

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WO2010017719A1 true WO2010017719A1 (fr) 2010-02-18

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WO (1) WO2010017719A1 (fr)

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CN108476507A (zh) * 2016-01-08 2018-08-31 日本电气株式会社 无线站系统、无线终端及其方法

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WO2013020649A1 (fr) * 2011-08-10 2013-02-14 Alcatel Lucent Resélection de cellule autonome par un équipement utilisateur
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CN108476507A (zh) * 2016-01-08 2018-08-31 日本电气株式会社 无线站系统、无线终端及其方法
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