WO2003105500A1 - Procede de transfert cellulaire reposant sur un reseau cellulaire a acces par paquets grande vitesse - Google Patents

Procede de transfert cellulaire reposant sur un reseau cellulaire a acces par paquets grande vitesse Download PDF

Info

Publication number
WO2003105500A1
WO2003105500A1 PCT/CN2003/000085 CN0300085W WO03105500A1 WO 2003105500 A1 WO2003105500 A1 WO 2003105500A1 CN 0300085 W CN0300085 W CN 0300085W WO 03105500 A1 WO03105500 A1 WO 03105500A1
Authority
WO
WIPO (PCT)
Prior art keywords
wib
target
rnc
source
original
Prior art date
Application number
PCT/CN2003/000085
Other languages
English (en)
French (fr)
Inventor
Lixin Sun
De Chen
Zhiming Li
Original Assignee
Huawei Technologies Co. Ltd
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 Huawei Technologies Co. Ltd filed Critical Huawei Technologies Co. Ltd
Priority to AU2003207229A priority Critical patent/AU2003207229A1/en
Publication of WO2003105500A1 publication Critical patent/WO2003105500A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength

Definitions

  • the invention relates to a cell switching method in a cellular high-speed packet access (CHPA) system.
  • CHPA packet access
  • a universal terrestrial radio access network first delivers a specific measurement including neighboring cells (such as path loss, received signal power, etc.) and Reporting criteria (such as timing reporting, exceeding or falling below a certain threshold) to the UE, meanwhile, the UE measures the channel quality of this cell and neighboring cells.
  • neighboring cells such as path loss, received signal power, etc.
  • Reporting criteria such as timing reporting, exceeding or falling below a certain threshold
  • the UE reports the measurement result to the UTRAN through a measurement report message, and the UTRAN decides whether to update the UE's active set or decide to switch the UE to a neighboring inter-frequency cell according to the measurement result. If the active set needs to be updated, UTRAN sends an active set update message to the UE. The UE receives the active set update message and adds or deletes the corresponding active set list according to the message. At the same time, it transfers to the new cell to implement the soft handover of the cell.
  • the UTRAN Adjacent inter-frequency cell, the UTRAN sends a reconfiguration message (such as a physical channel reconfiguration message) to the UE , The UE after receiving the active set update UTRAN or reconfiguration message, a radio link reconfiguration, to UTRAN complete message transmission, and further to complete the entire cell handover procedure.
  • a reconfiguration message such as a physical channel reconfiguration message
  • the UE needs to complete the measurement of the cell channel quality and report the measurement results. This will cause more battery consumption of the UE, and whether the UE performs cell handover is determined by the UTRAN decision, that is, by the UTRAN wireless network. Controller (RNC) The decision is made, and then the UE is reconfigured to implement the handover. This not only takes a long time for the UE to perform cell handover, but also the RNC's decision is very complicated, which leads to an increase in the complexity and cost of the RNC.
  • RNC Radio Network Controller
  • the purpose of the present invention is to provide a cell switching method for a cellular high-speed packet access network.
  • the UE needs less time and high efficiency for cell switching by using this method, and can reduce the battery consumption of the UE and the RNC of the access network. the complexity.
  • a cell switching method based on a cellular high-speed packet access network includes:
  • the user equipment measures the channel quality of the source wireless base station (WIB) based on the Internet Protocol (IP protocol) and neighboring WIBs.
  • IP protocol Internet Protocol
  • the UE will As the target WIB, read the broadcast information, and obtain the identification (W-ID) and color code of the target WIB;
  • the UE configures its own protocol stack and physical layer according to the public channel parameters of the target QB broadcast, and initiates a connection request to the target WIB, where the request includes the UE's original UE temporary identity (UTI, UE Temporary Ident ifi er),
  • the UTI includes a color code for distinguishing a WIB and a bit for distinguishing a UE;
  • the target WIB obtains the UE's original session configuration according to the UE's original UTI; d. the target WIB allocates a new UTI to the UE, where the UTI includes a color code for distinguishing the WIB and a bit for distinguishing the UE; The target WIB allocates radio resources to the UE, establishes a new communication link and releases the original communication link, thereby switching the connection between the UE and the access network to the new WIB.
  • Step C is achieved by the following steps:
  • the target 0WIB finds the bits identified by the source ⁇ B according to its own color code and subnet mapping table, and combines them with the bits used to identify the UE behind the UTI to obtain the original UTI identified by all the IP addresses of the UE,
  • the UTI of the original UE identified by the address is sent to the target radio network controller (RNC-IP) based on the IP protocol, requesting to query the original session configuration of the UE.
  • RNC-IP determines whether the source WIB belongs to its own control based on the original UTI of the UE. If it is to step A2), otherwise to step A3);
  • the target RNC-IP sends the UTIs of the original UEs identified by all IP addresses to the source WIB, and the source UEB feeds back the original session configuration of the UE to the target RNC-IP, and the RNC-IP sends the original session configuration of the UE to Target WIB and then end;
  • the target RNC-IP sends the UTIs of the original UEs identified by all IP addresses to the source RNC-IP, and the source RNC-IP forwards the UTIs of the original UEs to the source WIB, and the source UEB feeds back the source RNC-IP to the source RNC-IP.
  • the source RNC-IP forwards the original session configuration of the UE to the target RNC-IP
  • the target RNC-IP forwards the original session configuration of the UE to the target WIB, and then ends.
  • the establishment of a new communication link and the original communication link described in step d are: establishing a wireless link between the target WIB and the UE, and the target WIB A ground link is established with the RNC-IP, and at the same time, the ground link between the RNC-IP and the source WIB and the air link between the dry-release source WIB and the UE are released.
  • the establishment of a new communication link and the release of the original communication link as described in step d is: establishing a connection between the target WIB and the UE Establishing a wireless link, establishing a terrestrial link between the target WIB and the target RNC-IP, and establishing a link between the target RNC-IP and the GPRS service support node (SGSN), and simultaneously releasing the source RNC-IP and the SGSN , The release of the ground link between the RNC-IP and the source WIB, and the release of the air link between the source WIB and the UE.
  • SGSN GPRS service support node
  • the UE sends the original UTI to the target WIB, and the target WIB knows which UE the UE switched from according to its color code, thereby obtaining session configuration information from the source UEB.
  • the target WIB is based on this
  • the radio link is reconfigured, and the radio resources allocated in the previous cell are released. Compared to a new connection established by the UE, the parameter configuration process is greatly reduced.
  • the present invention does not require the UE to report the measurement results frequently, which can reduce battery consumption, and also eliminates the need for the RNC-IP to make decisions on all measurements of the UE, which greatly reduces the complexity and helps reduce product costs.
  • the UE measurement and reporting and RNC-IP decision-making process are omitted, the time taken for the entire handover process is greatly reduced. Therefore, the method described in the present invention requires less time and high efficiency, which can reduce the battery consumption of the UE. And reduce the complexity of the RNC-IP of the access network.
  • FIG. 1 is a flowchart of an embodiment of a method according to the present invention
  • FIG. 2 is a structural diagram of a CHPA wireless access network to which the method described in FIG. 1 is applied;
  • FIG. 3 is a schematic diagram of a color code multiplexing principle used in the embodiment shown in FIG. 1;
  • FIG. 4 is a schematic diagram of a 128-bit IP address identification segment used in the embodiment shown in FIG. 1.
  • FIG. detailed description is a schematic diagram of a 128-bit IP address identification segment used in the embodiment shown in FIG. 1.
  • FIG. 2 is a structural diagram of a CHPA wireless access network to which the method described in FIG. 1 is applied.
  • the radio network controller (RNC-IP) is a radio network controller based on the Internet Protocol (IP protocol), and the base station (WIB, Wireless Internet BaseStation) is an internet-based base station.
  • IP protocol Internet Protocol
  • WIB Wireless Internet BaseStation
  • Different RNC-IPs are connected through the interface lur
  • RNC-IP and WIB are connected through interface Iub
  • WIB and UE are connected through interface Uu.
  • the RNC-IP and WIB have a tree-like relationship with UEs connected to the WIB.
  • the RNC-IP, WIB, and UE in the CHPA access network are all set to 128 bits (bit ) IP address identification.
  • RNC-IP and WIB are static address identifiers, which are set by the operator when laying the network.
  • UTI UE Temporary Identifier
  • the 128-bit IP address is divided into three segments, the first Mlbit is the first segment, which is used to identify the RNC-IP; the middle M2bit is the second segment, which is used to Identifies the WIB under the RNC-IP, that is, the front Mlbit plus M2bit is used to identify the WIB under the RNC-IP; the rear M3bit is the third segment, which is used to identify the UE under the WIB, that is, the front Mlbit plus M2bit, plus The upper M3bit identifies the UE under the WIB.
  • M1 is 80bit
  • M2 is 24bit
  • M3 is 24bit.
  • one WIB corresponds to one IPv6 subnet. Since the WIB and the UE to which the UTI is allocated are in the same subnet, the WIB is exactly the same as the first 104 bits of these UE identifiers, and the WIB and these UEs together form a WIB subsystem. And the top 104 bits of adjacent WIBs are different. In addition, for the same RNC-IP controlled 0300085
  • the first 80bits are exactly the same. These WIBs and UEs assigned UTIs by these ⁇ s are the same as the first 80 bits of the RNC-IP identification, and they together constitute an RNC-IP subsystem. Therefore, in FIG. 2, the first 80 bits of different RNC-IPs are different from each other, and the WIBs with the same first 80 bits belong to the same RNC-IP control. The first 104 bits of different WIBs are different from each other. The UTIs of UEs connected to the same WIB are dynamically allocated by this WIB, and the first 104 bits of these UEs are the same as this WIB. Based on Fig. 2, when the method described in Fig.
  • the first 104 bits identified by the ⁇ ⁇ are compressed by a color code, that is, the first 104 bits used to distinguish the WIB are compressed to 8 bits.
  • Color code, and determine the mapping relationship between the WIB identifier and the color code this relationship can be set at the beginning of the network construction of the operator, and this mapping relationship is stored in each WIB, that is, in each WIB It stores a one-to-one correspondence between the color code and the adjacent WIB, and makes the WIB include the 128-bit IP address identifier W-ID and the color code in the broadcast information.
  • the same color code can be reused after a distance, and there will not be a case where one color code corresponds to two adjacent WIBs.
  • ⁇ can get the first 104 bits of the only adjacent WIB identification according to the color code.
  • FIG. 3 describes a mapping between WIB and color code.
  • FIG. 1 is a flowchart of an embodiment of a method according to the present invention.
  • the UE establishes a connection with the source WIB and maintains this connection, and the source WIB allocates a 128bit temporary UTI (UE temporary identifier) to the UE, so that the interaction between the UE and the source WIB is through UTI.
  • the UE measures the channel quality of the source WIB and the neighboring WIB in step 1. The channel quality is detected by detecting the pilot signals of the source WIB and the target WIB.
  • the UE uses the neighboring WIB as the target WIB, and reads the broadcast information of the target WIB, thereby obtaining the W-ID and color code of the target QB. According to the color code, the UE now knows to enter the new WIB.
  • the UE according to the common channel parameters broadcast by the target WIB (physical random access channel / random access channel PRACH / RACH, fast physical access channel FPACH, second common control physical channel / forward access channel SCCPCH / FACH ) Configure its own protocol stack and physical layer, and initiate a connection request RADIO ACCESS REQUEST message to the target WIB, the message carries the original UTI of the UE, the UTI includes a color code used to distinguish the WIB and a bit used to distinguish the UE , That is, the original 32-bit UTI (including the 8-bit color code and the last 24-bit bit :).
  • the target WIB compares the first 8-bit color code in the original UTI of the UE and finds that it is different from its own color code, so that it can be known that the UE is switched from an adjacent WIB.
  • the target WIB sends the original UTI of the UE to its corresponding target RNC-IP, and the target RNC-IP obtains the original session configuration of the UE and sends it to step 4
  • the target WIB, and finally the target WIB allocates a new UTI to the UE in step 5,
  • the UTI includes a color code used to distinguish the WIB and a UE used to distinguish the UE
  • the target WIB assigns a new 32-bit UTI to the UE, the first 8bit is the color code of the target WIB itself, and the last 24bit is the unique temporary identifier of the current UE within the target WIB; meanwhile, the target WIB allocates radio resources to the UE , Establish a new communication link and release the original communication link, thereby switching the connection between the UE and the access network to the new WIB.
  • steps 3 and 4 in this example refers to the following process: First, the target WIB is based on
  • the first 8-bit color code in the original UTI of the UE finds the source WIB identification bit, that is, the first 104bit, and the bit that is used to identify the UE after the UTI, that is, the UTI
  • the 24bi t combination obtains the UTI of the original UE identified by all IP addresses, that is, the original UTL of the 128bit of the UE.
  • the target WIB can determine that the source WIB and itself belong to the same RNC-IP control.
  • the target WIB sends the 128-bit original UTI to the target RNC-IP, requesting to query the UE's original session configuration (such as L2 configuration, radio access bearer configuration, etc.).
  • the target RNC-IP determines whether the source WIB is under its own control based on the first 80 bits of UTI. If it is under its own control, it sends the original UTI of the UE to the source WIB according to the first 104 bits, and requests the source WIB to feed back the UTI session configuration information.
  • the source WIB returns the original session configuration of the UE to the target RNC-IP, and then the target RNC-IP sends this session configuration to the target WIB.
  • the target RNC-IP needs to further clarify the source RNC-IP.
  • the target RNC-IP sends the UE's original UTI to the source RNC-IP, and the source RNC.
  • the IP then transfers the UE's original UTI to the source WIB, and requests the source WIB to feedback the session configuration information of the UTI.
  • the source ⁇ returns the UE's original session configuration to the source RNC-IP.
  • the source RNC-IP transfers the UE's original session configuration to the target C-IP, and the target RNC-IP sends this session configuration to the target.
  • the target WIB in step 5 above allocates radio resources to the UE, establishes a new communication link, and releases the original communication link.
  • the target ⁇ allocates radio resources to the UE, establishes a wireless link, and establishes a ground link between the target WIB and RNC-IP. # Puts the ground link resources between the RNC-IP and the source W1B, and releases the source WIB and the UE. Air link resources.
  • the target WIB allocates radio resources to the UE and establishes a wireless link.
  • a ground link is established between the target WIB and RNC-IP, and a target RNC-IP and SGSN are established.

Landscapes

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

Description

一种基于蜂窝高速分组接入网的小区切换方法 技术领域
本发明涉及蜂窝高速分组接入（CHPA ) ***中的小区切换方法。 背景技术
在 WC画 A***中， 用户设备（UE )在进行小区切换时， 首先由通 用陆地无线接入网 （UTRAN ) 下发包含相邻小区具体的测量量（如路 径损耗、 接收信号功率等）和上报准则 （如定时上报、 超过或者低于 某一门限上艮）的测量控制消息给 UE , 同时 UE测量本小区和相邻小 区的信道质量， 当本小区信道质量变差 （低于 UTRAN规定门限）， 相 邻小区信道质量增强 （超过 UTRAN规定门限） 时， UE通过测量上报 消息向 UTRAN上报测量结果， UTRAN根据测量结果决定是更新 UE的 激活集还是决定将 UE切换到相邻异频小区， 如果需要更新激活集， 则 UTRAN向 UE发送激活集更新消息， UE接收到激活集更新消息并 根据该消息增删相应激活集列表，同时转入新小区进而实现小区的软 切换； 如果需要切换到相邻异频小区， 则 UTRAN向 UE发送重配置消 息 (如物理信道重配置消息）， UE在接到 UTRAN的激活集更新或者重 配置消息后， 重新配置无线链路， 并向 UTRAN发送完成消息， 进而完 成整个小区切换过程。
在上述的 UE小区切换过程中，需要 UE完成小区信道质量的测量 和测量结果的上报， 这样将产生较多 UE的电池消耗， 同时 UE是否进 行小区切换由 UTRAN决策判定， 即由 UTRAN的无线网络控制器（ RNC ) 决策判定， 然后通过 UE重新配置实施切换， 这样不但 UE进行小区切 换的时间较长， 而且 RNC的决策也非常复杂， 导致了 RNC复杂度和成 本的增力口。
发明内容
本发明的目的在于提供一种蜂窝高速分组接入网的小区切换方 法， UE 釆用该方法进行小区切换需要的时间少、 效率高， 并且可以 减少 UE的电池消耗、 降低接入网的 RNC的复杂度。
为达到上述目的，本发明提供的基于蜂窝高速分組接入网的小区 切换方法， 包括：
a.用户设备 ( UE )测量基于互联网协议 ( IP协议 ) 的源无线基 站（ WIB )和相邻 WIB的信道质量， 当相邻 WIB的信道质量优于源 WIB 的信道质量时， UE将相邻的 WIB作为目标 WIB , 读取其广播的信息， 从中获取目标 WIB的标识（W- ID )和色码；
b. UE根据目标 ΉΒ广播的公共信道参数配置自身的协议栈和物 理层， 并向目标 WIB发起连接请求， 所述请求中包括 UE的原 UE临时 标识（UTI , UE Temporary I dent i f i er ), 所述 UTI包括用于区分 WIB 的色码和用于区分 UE的比特位；
c目标 WIB根据 UE的原 UTI获取该 UE的原有的会话配置； d.目标 WIB为 UE分配新的 UTI , 所述 UTI 包括用于区分 WIB的 色码和用于区分 UE的比特位； 同时， 目标 WIB为 UE分配无线资源， 建立新的通信链路并释放原有的通信链路， 从而将 UE与接入网之间 的连接切换到新的 WIB中。 步驟 C通过下述步骤实现：
A1 ) 目标 0WIB根据自身的色码、 子网映射表查找出源 ΉΒ标识 的比特位， 与 UTI后面用于标识 UE的比特位组合得到该 UE的全部 IP地址标识的原 UTI ,将该全部 IP地址标识的原 UE的 UTI发给基于 IP协议的目标无线网络控制器（RNC-IP ), 请求查询该 UE的原有会 话配置，目标 RNC- IP根据 UE的原 UTI判断源 WIB是否属于自己控制， 如果是转步骤 A2 )， 否则转步骤 A3 );
A2 ) 目标 RNC- IP将全部 IP地址标识的原 UE的 UTI发给源 WIB, 源 ΉΒ向目标 RNC- IP反馈该 UE的原有会话配置， RNC- IP将上述 UE 的原有会话配置发给目标 WIB， 然后结束；
A3 )目标 RNC- IP将全部 IP地址标识的原 UE的 UTI发给源 RNC - IP , 源 RNC-IP再将上述原 UE的 UTI转发到源 WIB， 源 ΉΒ向源 RNC-IP 反馈该 UE的原有会话配置， 源 RNC- IP将上述 UE的原有会话配置转 发给目标 RNC- IP, 目标 RNC- IP再将上述 UE的原有会话配置转发给 目标 WIB， 然后结束。
当源 WIB和目标 WIB属于一个 RNC- IP控制时， 步驟 d所述建立 新的通信链路并幹放原有的通信链路为： 在目标 WIB与 UE之间建立 无线链路， 以及目标 WIB与 RNC - IP之间建立地面链路， 同时 0释放 RNC - IP与源 WIB之间的地面链路和幹放源 WIB与 UE之间的空中链 路。
当源 ΉΒ和目标' WIB不属于一个 RNC- IP控制时， 步骤 d所述建 立新的通信链路并释放原有的通信链路为： 在目标 WIB与 UE之间建 立无线链路， 在目标 WIB与目标 RNC - IP之间建立地面链路， 以及在 目标 RNC- IP与 GPRS业务支持节点（ SGSN )之间建立链路， 同时释放 源 RNC- IP与 SGSN之间的链路、释放 RNC - IP与源 WIB之间的地面链 路以及译放源 WIB与 UE之间的空中链路。
由于本发明在软切换过程中， UE将原有 UTI发送给目标 WIB, 目 标 WIB根据其色码得知此 UE从哪个 ΉΒ切换而来， 从而从源 ΉΒ获 取会话配置信息， 目标 WIB在此基础上重新配置无线链路， 再释放前 一小区中分配的无线资源， 相对于 UE新建立一个连接来说， 大大减 化了参数配置过程。
与现有方法相比， 由于本发明不需 UE频繁上报测量结果， 可以 减少电池消耗， 也使 RNC - IP不用对 UE的所有测量作决策， 使其复 杂度大大降低， 有利于产品成本降低； 同时， 由于省却了 UE测量上 报和 RNC-IP的决策过程，整个切换过程所耗时间大大减少，因此， 采 用本发明所述方法进行小区切换需要的时间少、 效率高， 可以减少 UE的电池消耗以及降低接入网的 RNC-IP的复杂度。
附图说明
图 1是本发明所述方法的实施例流程图；
图 2是应用图 1所述方法的 CHPA无线接入网结构图； 图 3是图 1所述实施例采用的色码复用原理示意图；
图 4是图 1所述实施例采用的 128位 IP地址标识分段示意图。 具体实施方式
下面结合附图对本发明作进一步详细的描述。 首先参考图 2, 图 2是应用图 1所述方法的 CHPA无线接入网结 构图。 图 2 中， 无线网络控制器 （RNC- IP) 为基于互联网协议（IP 协议） 的无线网络控制器， 基站 （ WIB, Wireless Internet BaseStation)为基于互联网的基站， 不同的 RNC- IP通过接口 lur连 接， RNC- IP与 WIB通过接口 Iub连接， WIB与 UE之间通过接口 Uu连 接。 RNC- IP、 WIB, 与该 WIB有连接的 UE之间呈树状关系。
在图 2所示的网络中， 为了更好地支持基于 IP的移动 UE, 与第 6版 IP ( IPv6 )地址兼容， CHPA接入网中的 RNC - IP、 WIB和 UE均 设置 128位（ bit )的 IP地址标识。 其中 RNC - IP和 WIB为静态地址 标识， 由运营商在铺设网络时设定。在每一次 WIB与 UE建立会话时， WIB为 UE动态分配一个临时标识 UTI (UE Temporary Identifier ), 以便在该 WIB内唯一标识 UE以及与该 UE之间的这一会话。 在采用 128bit的 IP地址标识 RNC - IP、 WIB和 UE时， 将 128bit的 IP地址 分为三段， 前 Mlbit为第一段， 用于标识 RNC- IP; 中部的 M2bit为 第二段， 用于标识 RNC- IP下的 WIB, 即用前 Mlbit加上 M2bit 标识 RNC-IP下的 WIB; 后部的 M3bit为第三段， 用于标识 WIB下的 UE, 即用前 Mlbit加上 M2bit, 再加上 M3bit 标识 WIB下的 UE。 在图 1 中， Ml为 80bit, M2为 24bit， M3为 24bit, 参考图 4。
因此， 在图 2所示的网络中， 一个 WIB与一个 IPv6子网——对 应。 由于 WIB与其分配 UTI的 UE处于同一子网， WIB与这些 UE标识 的前 104位完全相同， WIB和这些 UE共同构成一个 WIB子***。 而 且相邻的 WIB的前 104位均不相同。 另外,对于同一 RNC-IP控制的 0300085
一 6—
WIB,其前 80bit完全相同。这些 WIB以及由这些 ΉΒ分配 UTI的 UE， 和该 RNC - IP的标识前 80bit均相同，它们共同构成一个 RNC - IP子 ***。 因此在图 2 中， 不同的 RNC- IP前 80bit互不相同， 并且前 80bit相同的 WIB属于同一 RNC- IP控制。 不同的 WIB其前 104bit 互不相同，与同一个 WIB建立连接的 UE其 UTI由这一 WIB动态分配， 并且这些 UE的前 104bit与这一 WIB相同。 基于图 2, 在图 1所述的方法具体实施时， 为了节省空中资源， 避免在空中传输 128bit的 UTI, 通过色码将 ΉΒ标识的前 104bit, 即用于区分 WIB的前 104bit压缩为 8bit的色码，并且确定 WIB标识 到色码之间的映射关系， 这种关系可以在运营商在建网之初设定， 并 将这一映射关系存放在每一个 WIB中，即在每一 WIB中存放色码与相 邻 WIB之间一、一对应的子网映射表， 同时使 WIB在广播的信息中包 括自身的 128bitIP地址标识 W- ID以及色码。 这样， 只要任意相邻 的 WIB具有不同的色码， 相同的色码可以在间隔一段距离后重用， 不 会出现一个色码对应两个相邻 WIB的情况。同时 ΉΒ根据色码即可得 到唯一的一个相邻 WIB标识的前 104bit。 基于上述操作， 在 UE与 WIB建立连接后， 相互之间的交互不必 使用 128bit的 UTI, 而是直接使用 128bitIP地址标识的后 24bit。 通过 WIB广播自身的 128bitIP地址标识 W- ID以及色码，当 UE移动 进入另一 WIB时， UE会检测到前 104bit和色码与自身色码不同， 由 此 ϋΕ知道已经进入另一个 WIB, 需要实施接力软切换过程。 图 3描述 WIB与色码之间的一种映射。 从图 3可以看出， WIB8 与 WIB6使用相同的色码，即色码 CC=6 ,由于他们之间相隔一段距离， 因而 WIB6的相邻 WIB1可以通过色码将其区分开。
图 1是本发明所述方法的实施例流程图。 按照图 1， 初始时， UE 与源 WIB建立了一个连接并保持这一连接， 并且源 WIB为 UE分配了 一个 128bi t的临时 UTI ( UE临时标识）， 这样 UE与源 WIB之间交互 通过 UTI的后 24b i t即可。 UE移动过程中， 在步骤 1UE测量源 WIB 和相邻 WIB的信道质量，信道质量的检测通过检测到源 WIB、目标 WIB 的导频信号进行。 当相邻 WIB的信道质量优于源 WIB的信道质量时， UE将相邻的 WIB作为目标 WIB, 读取该目标 WIB的广播信息， 从而 获得目标 ΉΒ的 W - ID和色码。根据色码，此时 UE知道进入新的 WIB。 然后 UE在步驟 2根据目标 WIB广播的公共信道参数 (物理随机接入 信道 /随机接入信道 PRACH/RACH、 快速物理接入信道 FPACH、 第二公 共控制物理信道 /前向接入信道 SCCPCH/FACH ) 配置自身协议栈和物 理层， 并向目标 WIB发起连接请求 RADIO ACCESS REQUEST消息， 该 消息中携带了 UE的原 UTI， 所述 UTI包括用于区分 WIB的色码和用 于区分 UE的比特位， 即 32位的原 UTI (包含 8位色码和最后的 24 比特位：)。 目标 WIB通过对比 UE原 UTI中的前 8位色码， 发现与自身 色码不同， 即可知道该 UE是从相邻 WIB切换而来。
目标 WIB为了获取 UE与源 WIB的原有会话配置， 在步骤 3将 UE 的原 UTI发送给自己对应的目标 RNC- IP, 由目标 RNC-IP在步骤 4获 取 UE的原有会话配置并发送给目标 WIB， 最后目标 WIB在步骤 5为 UE分配新的 UTI , 所述 UTI包括用于区分 WIB的色码和用于区分 UE 的比特位； 即目标 WIB给 UE分配新的 32位 UTI , 前 8bi t为目标 WIB 自身色码，后 24bi t为当前 UE在目标 WIB内的唯一临时标识； 同时， 目标 WIB为 UE分配无线资源， 建立新的通信链路并释放原有的通信 链路， 从而将 UE与接入网之间的连接切换到新的 WIB中。
本例中上述步骤 3、 4的实现参考如下过程： 首先目标 WIB根据
UE原 UTI 中的前 8位色码， 以及根据自身的色码， 子网映射表查找 出源 WIB标识比特位， 即前 104bi t , 与 UTI 后面用于标识 UE的比特 位， 即 UTI的后面 24bi t组合得到全部 IP地址标识的原 UE的 UTI , 即 UE的 128bi t的原 UTL 此时根据 WIB标识的前 80bi t , 目标 WIB 可以判断出源 WIB与自身同属于一个 RNC - IP控制。接着目标 WIB将 128位的原 UTI发给目标 RNC - IP，请求查询该 UE原有的会话配置（如 L2配置、 无线接入承载配置等）。 目标 RNC - IP根据 UTI的前 80bi t 判断源 WIB是否属于自己控制，如果属于自己控制，则根据前 104bi t , 将 UE的原 UTI发往源 WIB, 请求源 WIB反馈该 UTI的会话配置信息。 源 WIB向目标 RNC一 IP返回该 UE的原有会话配置， 然后目标 RNC - IP将这一会话配置发给目标 WIB。 如果源 WIB不属于自己控制 , 贝 'J 目标 RNC-IP需要进一步明确源 RNC - IP,根据 UE原 UTI的前 80bi t , 目标 RNC― IP将 UE的原 UTI发往源 RNC - IP, 源 RNC - IP再将 UE的 原 UTI转至源 WIB, 请求源 WIB反馈该 UTI的会话配置信息。 源 ΉΒ 向源 RNC - IP返回该 UE的原有会话配置，源 RNC - IP将 UE的原有会 话配置转交给目标 C - IP, 由目标 RNC - IP将这一会话配置发给目 标 本例中上述步骤 5 所述目标 WIB为 UE分配无线资源， 建立新的 通信链路并释放原有的通信链路的实现参考如下过程： 当源 WIB和 目标 WIB属于同一个 RNC-IP控制时， 目标 ΉΒ为 UE分配无线资源， 建立无线链路， 同时目标 WIB与 RNC - IP之间建立地面链路， #放 RNC - IP与源 W1B之间的地面链路资源以及释放源 WIB与 UE之间的 空中链路资源。
当源 WIB和目标 WIB不属于同一个 RNC-IP控制时， 目标 WIB为 UE分配无线资源， 建立无线链路， 目标 WIB与 RNC - IP之间建立地 面链路以及目标 RNC - IP与 SGSN之间建立链路； 同时释放 RNC - IP 与 SGSN之间链路、 释放 RNC - IP与源 WIB之间的地面链路资源， 以 及释放源 WIB与 UE之间的空中链路资源。

Claims

权 利 要 求
1、 一种基于蜂窝高速分组接入网的小区切换方法， 包括： a.用户设备 ( UE )测量基于互联网协议（IP 协议） 的源无线基 站（ WIB )和相邻 WIB的信道质量， 当相邻 WIB的信道质量优于源 WIB 的信道质量时， UE将相邻的 WIB作为目标 WIB， 读取其广播的信息， 从中获取目标 WIB的标识（W- ID )和色码；
b. UE根据目标 WIB广播的公共信道参数配置自身的协议栈和物 理层， 并向目标 WIB发起连接请求， 所述请求中包括 UE的原 UE临时 标识（UTI , UE Temporary Ident if ier ), 所述 UTI包括用于区分 WIB 的色码和用于区分 UE的比特位；
c.目标 WIB根据 UE的原 UTI获取该 UE的原有的会话配置； d.目标 WIB为 UE分配新的 UTI , 所述 UTI包括用于区分 WIB的 色码和用于区分 UE的比特位； 同时， 目标 WIB为 UE分配无线资源， 建立新的通信链路并释放原有的通信链路， 从而将 UE与接入网之间 的连接切换到新的 WIB中。
1、 根据权利要求 1所述的小区切换方法， 其特征在于步骤 c通 过下述步驟实现：
A1 ) 目标 WIB根据自身的色码、 子网映射表查找出源 WIB标识的 比特位， 与 UTI后面用于标识 UE的比特位组合得到该 UE的全部 IP 地址标识的原 UTI ,将该全部 IP地址标识的原 UE的 UTI发给基于 IP 协议的目标无线网络控制器（ RNC- IP )， 请求查询该 UE的原有会话配 置， 目标 RNC- IP根据 UE的原 UTI判断源 WIB是否属于自己控制， 如 果是转步驟 A2 ), 否则转步骤 A3 );
A2 ) 目标 RNC- IP将全部 IP地址标识的原 UE的 UTI发给源 WIB , 源 WIB向目标 RNC- IP反馈该 UE的原有会话配置， RNC- IP将上述 UE 的原有会话配置发给目标 WIB , 然后结束；
A3 )目标 RNC- IP将全部 IP地址标识的原 UE的 UTI发给源 RNC- IP , 源 RNC- IP再将上述原 UE的 UTI转发到源 WIB, 源 ΨΪΒ向源 RNC-IP 反馈该 UE的原有会话配置， 源 RNC- IP将上述 UE的原有会话配置转 发给目标 RNC- IP , 目标 RNC- IP再将上述 UE的原有会话配置转发给 目标 WIB , 然后结束。
3、 才 据权利要求 1所述的小区切换方法， 其特征在于当源 WIB 和目标 WIB属于一个 RNC- IP控制时， 步驟 d所述建立新的通信链路 并释放原有的通信链路为： 在目标 WIB与 UE之间建立无线链路， 以 及目标 WIB与 RNC - IP之间建立地面链路， 同时释放 RNC - IP与源 WIB之间的地面链路和幹放源 WIB与 UE之间的空中链路。
4、 根据权利要求 3所述的小区切换方法， 其特征在于当源 WIB 和目标 WIB不属于一个 RNC- IP控制时， 步骤 d所述建立新的通信链 路并锋放原有的通信链路为： 在目标 WIB与 UE之间建立无线链路， 在目标 WIB与目标 RNC - IP之间建立地面链路， 以及在目标 RNC- IP 与 GPRS业务支持节点（ SGSN )之间建立链路， 同时释放源 RNC-IP与 SGSN之间的链路、 释放 RNC - IP与源 WIB之间的地面链路以及释放 源 WIB与 UE之间的空中链路。
PCT/CN2003/000085 2002-06-10 2003-01-27 Procede de transfert cellulaire reposant sur un reseau cellulaire a acces par paquets grande vitesse WO2003105500A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003207229A AU2003207229A1 (en) 2002-06-10 2003-01-27 Method for cell handoff built on cellular high-speed packet access network

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN02121136.1 2002-06-10
CNB021211361A CN1276606C (zh) 2002-06-10 2002-06-10 一种基于蜂窝高速分组接入网的小区切换方法

Publications (1)

Publication Number Publication Date
WO2003105500A1 true WO2003105500A1 (fr) 2003-12-18

Family

ID=29721378

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2003/000085 WO2003105500A1 (fr) 2002-06-10 2003-01-27 Procede de transfert cellulaire reposant sur un reseau cellulaire a acces par paquets grande vitesse

Country Status (3)

Country Link
CN (1) CN1276606C (zh)
AU (1) AU2003207229A1 (zh)
WO (1) WO2003105500A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101171786B (zh) * 2005-05-11 2013-05-29 艾利森电话股份有限公司 通信会话管理的方法、装置和***

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100433918C (zh) * 2005-09-20 2008-11-12 中兴通讯股份有限公司 最佳小区标识反馈方法及节点b内快速小区选择方法
KR100735399B1 (ko) * 2005-09-23 2007-07-04 삼성전자주식회사 디지털 방송 시스템에서 이동통신 시스템을 이용한핸드오버를 수행하기 위한 방법 및 장치
CN100441052C (zh) * 2006-09-15 2008-12-03 中兴通讯股份有限公司 一种防止a接口软切换消息流量过大的方法
CN101272602B (zh) * 2007-03-21 2012-05-23 华为技术有限公司 一种网络间切换的方法、***及装置
CN101616476B (zh) * 2009-07-28 2012-04-04 华为技术有限公司 实现标识符分配处理的方法、网络侧设备及网络***
CN105246123B (zh) * 2015-08-28 2018-10-02 广东石油化工学院 一种改进的carp路由协议
CN113133068B (zh) * 2019-12-31 2022-06-14 ***通信集团浙江有限公司 濒危电量终端的同频切换方法及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0406186A2 (en) * 1989-06-26 1991-01-02 Telefonaktiebolaget L M Ericsson Mobile assisted handoff
US5428816A (en) * 1993-09-09 1995-06-27 Hughes Aircraft Company Method and apparatus for mobile assisted handoff
WO1998038827A1 (en) * 1997-02-28 1998-09-03 Nokia Telecommunications Oy Handover and call setup in a mobile communication system
WO2001015482A1 (en) * 1999-08-23 2001-03-01 Ericsson, Inc. Seamless channel re-selection method for switching from a channel in one cell to a second channel in another cell for mobile data services

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0406186A2 (en) * 1989-06-26 1991-01-02 Telefonaktiebolaget L M Ericsson Mobile assisted handoff
US5428816A (en) * 1993-09-09 1995-06-27 Hughes Aircraft Company Method and apparatus for mobile assisted handoff
WO1998038827A1 (en) * 1997-02-28 1998-09-03 Nokia Telecommunications Oy Handover and call setup in a mobile communication system
WO2001015482A1 (en) * 1999-08-23 2001-03-01 Ericsson, Inc. Seamless channel re-selection method for switching from a channel in one cell to a second channel in another cell for mobile data services

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101171786B (zh) * 2005-05-11 2013-05-29 艾利森电话股份有限公司 通信会话管理的方法、装置和***

Also Published As

Publication number Publication date
CN1466295A (zh) 2004-01-07
AU2003207229A1 (en) 2003-12-22
CN1276606C (zh) 2006-09-20

Similar Documents

Publication Publication Date Title
JP4448036B2 (ja) ユーザ装置の移動性管理方法及びその通信システム
KR100617761B1 (ko) Ｍｂｍｓ 포인트 대 포인트(ｐｔｐ)와 포인트 대 멀티포인트(ｐｔｍ)간의 채널 변경 방법
EP1875763B1 (en) Internetworking of cellular radio networks and wireless data networks
JP4944117B2 (ja) 総合無線アクセスネットワークのハンドオーバ特性を改善する手段および方法
KR100960115B1 (ko) 이동통신 시스템 및 그 터널관리방법
KR100964684B1 (ko) 이동통신 시스템의 방송 및 멀티캐스트 서비스 제공방법
US9042393B2 (en) Method and apparatus for setting up uplink common bearer in wireless communication network
US20060109812A1 (en) Temporary mobile group identifier generation and distribution method
WO2022012426A1 (zh) Uu路径到直接通信路径的切换及候选中继UE指示方法、装置、存储介质、终端、基站
EP1978762A1 (en) Service content synchronization of multicast data for mobile nodes moving between networks with different radio access technologies
CN101005692A (zh) 减少终端在lte和3g接入技术间切换的信令的方法
KR100987230B1 (ko) 무선 통신 시스템에서 방송/다중 서비스 방법 및 시스템
EP1347614A3 (en) Communication method and system in a cellular network with resource reservation
WO2012097709A1 (zh) 设备切换方法及装置
CN101588570B (zh) 建立用户面单隧道的方法、***及其基站子***
KR20110121580A (ko) 사용자 단말 재배치 장치 및 방법
WO2003105500A1 (fr) Procede de transfert cellulaire reposant sur un reseau cellulaire a acces par paquets grande vitesse
WO2011018040A1 (zh) 小区更新方法及***
KR100899728B1 (ko) 네트워크 공유 시스템에서 서빙 무선망 제어기의 재할당 방법 및 시스템
AU2007222104A1 (en) Method and apparatus for supporting handoff and serving radio network subsystem relocation procedures in a single tunnel GPRS-based wireless communication system
CN100461951C (zh) 一种组播切换方法和设备
KR20040051329A (ko) 무선랜망과 이동통신망간의 핸드 오버 방안
US20070153721A1 (en) Method of transferring session information between access nodes in a mobile communication network
WO2023280149A1 (zh) 多播业务传输模式的转换方法及相关设备
KR101081181B1 (ko) Ｅｖ－ｄｏ 통신망에서의 호 성공률 향상 및 시스템 부하 감소 방법

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SC SD SE SG SK SL TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP