WO2009015540A1 - Method for accelerating terminal of wireless communication system accessing network - Google Patents

Method for accelerating terminal of wireless communication system accessing network Download PDF

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Publication number
WO2009015540A1
WO2009015540A1 PCT/CN2007/003921 CN2007003921W WO2009015540A1 WO 2009015540 A1 WO2009015540 A1 WO 2009015540A1 CN 2007003921 W CN2007003921 W CN 2007003921W WO 2009015540 A1 WO2009015540 A1 WO 2009015540A1
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WIPO (PCT)
Prior art keywords
terminal
nap
network
message
information
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PCT/CN2007/003921
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English (en)
French (fr)
Inventor
Jianquan Song
Li Chu
Ling Xu
Ning Wang
Zheng Huang
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Zte Corporation
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Priority to JP2010518475A priority Critical patent/JP5001430B2/ja
Priority to EP07855921.8A priority patent/EP2180639B1/en
Priority to US12/670,399 priority patent/US8320316B2/en
Publication of WO2009015540A1 publication Critical patent/WO2009015540A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service

Definitions

  • the present invention relates to a wireless communication system access network technology, and more particularly to a method for a wireless communication terminal to access a network.
  • one access network can be shared by multiple service networks, and one geographical area can also be simultaneously operated by multiple access network operators. Provide services. In such a complex operating mode, the discovery and selection functions of the network are becoming more and more important.
  • the schemes for implementing network discovery and selection have their own characteristics, but firstly, it is necessary to obtain the identifier of the network, and then the terminal performs subsequent processing according to the information stored by the terminal.
  • WiMAX Take the WiMAX system as an example.
  • NWG 1.1.0 the process and method of WiMAX terminal discovery and selection of networks are described.
  • the network discovery and selection process when the terminal saves the configuration information of the relevant subscription is described.
  • the base station access can utilize the configuration information of the saved subscription to optimize the process of network discovery and selection and the like to enter the network.
  • the current network discovery and selection based on "last connection information" or "subscription configuration information" and the process of entering the network include the following sequence of processes:
  • the terminal will perform the process before the network access provider identifier (NAP ID, Network Access Provider ID) and the base station identifier (BS ID, Base Station ID) validity determination process.
  • NAP ID Network Access Provider ID
  • BS ID Base Station ID
  • Sub-DCD count value validity judgment process After the DCD count value is judged to be invalid, the message such as DCD is continuously obtained.
  • the terminal directly obtains a message such as a downlink channel descriptor (DCD, Download Channel Descriptor) and then performs a NAP ID validity determination process.
  • DCD downlink channel descriptor
  • the downlink mapping (DL-MAP) message contains There are “DCD count value” and “BS ID (including NAP ID)”, and the DCD message (that is, a message periodically sent by the BS, which defines the characteristics of the downlink physical channel) has “configuration change count, , , " network service The provider identifier (NSP ID, Network Service Provider ID) changes the count value.
  • NAP ID Network Service Provider
  • the terminal always receives the DL-MAP message first in the downlink synchronization, thereby obtaining the "DCD count value" and the "BS ID (including the NAP ID)". Then receive control messages such as DCD.
  • the technical problem to be solved by the present invention is to provide a method for accelerating the entry of a terminal of a wireless communication system into a network, thereby improving the original protocol flow and reducing the time for the terminal to perform network discovery and selection, thereby improving the speed at which the terminal accesses the network.
  • the present invention provides a method for accelerating a wireless communication system terminal to enter a network, comprising the following steps:
  • the wireless terminal receives the system parameter information, and after obtaining the system information of the base station identity BS ID and the network access provider identity NAP ID, immediately validates the NAP ID, or the NAP ID and the BS ID. Judgment of effectiveness;
  • the terminal proceeds to perform the network discovery and selection subsequent processes according to the information stored therein; if it is determined to be invalid, a new network discovery and selection process is performed.
  • step (a) If the terminal has previous connection information, in step (a), the NAP ID and the BS ID The validity of the judgment;
  • step (a) If the terminal stores the configuration information at the time of subscription, in step (a), the validity of the NAP ID is determined.
  • step (b) includes receiving and parsing the processed physical channel parameter message.
  • the terminal does not receive and parse the processing physical channel parameter message according to the existing protocol, but starts a new network discovery and selection process.
  • step (a) the terminal obtains the BS ID, the NAP ID, and the downlink channel descriptor DCD count value by synchronizing the downlink channel and parsing the DL-MAP message.
  • the terminal (a) stores the previous connection information
  • the subsequent process of the step (b) includes the following steps:
  • step (bl) determining whether the DCD count value matches the DCD count value saved by the terminal, and if yes, ending network discovery and selection; if not, performing step (b2);
  • step (a) the terminal stores configuration information at the time of subscription
  • step (b) includes: receiving and parsing the processed DCD message and the UCD message and the NSP change count value, and continuing the subsequent process according to the protocol. Execution.
  • the present invention When obtaining the BS ID and the NAP ID by receiving the system information of the wireless communication, the present invention first determines the validity of the BS ID and the NAP ID, and then performs the network discovery and selection process based on the "existing connection information". Subsequent process; or in the network discovery and selection process based on the "configuration information of existing subscriptions", the NAP ID is saved in the original protocol process by first performing the NAP ID validity judgment before proceeding with the subsequent process. In the case of invalid BS ID, a series of invalid processes such as message reception and decoding still need to be continued, thereby speeding up the terminal accessing the network.
  • BRIEF abstract 1 is an optimization flow of network discovery and selection based on a last connection information of a WiMAX network according to an embodiment of the present invention
  • FIG. 2 is a flow chart for optimizing network discovery and selection of a WiMAX network based on subscription configuration information according to an embodiment of the present invention.
  • the method for speeding up the wireless communication system terminal to enter the network includes the following steps:
  • the wireless terminal receives the system parameter information, and immediately obtains the validity of the NAP ID, or the BS ID and the NAP, after obtaining the system information of the BS ID and the NAP ID. Judging the validity of the ID;
  • the subsequent process of receiving and parsing the physical channel parameter message is continued; if it is judged to be invalid, a new network discovery and selection process is performed.
  • Embodiment 1 In the case where the terminal has the previous connection information, the method for implementing the network discovery and selection in the embodiment of the present invention is as shown in FIG. 1 , and includes the following steps:
  • Step 101 Synchronize the downlink channel, parse the DL-MAP message, and obtain the NAP ID and BS respectively.
  • Step 102 Determine whether the NAP ID and the BS ID match the value saved by the terminal, if yes, perform step 103; if not, go to step 105;
  • Step 103 Determine whether the DCD count value matches the value saved by the terminal; if yes, go to step 104; if not, go to step 106;
  • Step 104 The network discovery and selection ends
  • Step 105 Terminate the subsequent process in the original protocol, restart network discovery and selection, that is, wireless
  • the terminal does not need to receive and parse the physical channel parameter message according to the protocol;
  • Step 106 Waiting, scanning, and obtaining a DCD and Upstream Channel Descriptor (UCD) message and an NSP change count value; and continuing the subsequent process according to the protocol.
  • Embodiment 2 In the case that the terminal has the configuration information at the time of the subscription, the method for implementing the network discovery and selection in the embodiment of the present invention is as shown in FIG. 2, and includes the following steps:
  • Step 201 Synchronize the downlink channel, parse the DL-MAP message, and obtain the NAP ID, the BS ID, and the DCD count value respectively.
  • step 202 Determine whether the NAP ID matches the configuration information of the subscription saved by the terminal, and if yes, perform 203; if not, go to step 204;
  • the present invention provides a method for accelerating a wireless communication system terminal to enter a network, and based on a network discovery and selection process of "already connection information" or "already configured information", the NAP ID is obtained by receiving system information and After the BS ID, the NAP ID or the NAP ID and the validity of the BS ID are first determined, and then the subsequent process is performed. This avoids a series of invalid processes such as message reception and decoding that need to be continued in the original protocol flow when the NAP ID or BS ID is invalid, thereby speeding up the terminal accessing the network.

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

Description

一种加快无线通信系统终端进入网络的方法
技术领域
本发明涉及无线通信系统接入网技术，尤其涉及无线通信终端接入网络 的方法。
背景技术
在当前的无线网络中， 既存在有接入网运营商， 也存在有服务网络运营 商， 一个接入网可以为多个服务网络共享， 一个地理区域也可以同时由多个 接入网运营商提供服务。这样复杂的运营模式下， 网络的发现和选择功能越 来越重要。
在目前的无线通信网络中， 实现网络发现和选择的方案各有特点， 但是 首先都需要获得网络的标识，然后终端根据自身存储的信息情况进行后续处 理。
以 WiMAX系统为例，在它新发布的 NWG1.1.0版本中，描述了 WiMAX 终端发现和选择网络的流程和方法。 其中，描述了终端在保存有相关订阅时 的配置信息时的网络发现和选择流程。这种情况下，基站接入可以利用保存 的订阅时的配置信息，优化网络发现和选择等进入网络的过程。 由此可以看 出目前这个基于 "上一次连接信息"或 "订阅时的配置信息" 的网络发现和 选择以及进入网络的流程包含如下流程顺序：
对于基于 "上一次连接信息" 的情况， 在做网络接入提供商标识（NAP ID, Network Access Provider ID )和基站标识（ BS ID, Base Station ID )有 效性判断流程之前， 终端会先进行上次 DCD计数值有效性判断流程。 DCD 计数值判断无效后， 则继续获取 DCD等消息。
对于基于 "订阅时的配置信息" 的情况， 终端会直接获取下行信道描述 符（ DCD, Download Channel Descriptor )等消息后再进行 NAP ID有效性判 断流程。 根据 IEEE802.16e-2005协议， 下行链路映射（ DL-MAP )消息里面包含 有 "DCD计数值" 以及 "BS ID (包含 NAP ID ) " , 而 DCD消息 （即 BS 周期性发送的一个消息， 定义了下行物理信道的特性）里面有 "配置改变计 数，， 、 "网络服务提供商标识（NSP ID, Network Service Provider ID )改变 计数值" 。
根据 IEEE802.16e-2005协议， 终端下行同步时总是首先接收 DL-MAP 消息， 从而获得 "DCD计数值" 以及 "BS ID (包含 NAP ID ) " 。 然后再 接收 DCD等控制消息。
所以通过以上分析可以看出， 据现有协议的流程， 虽然终端先解码 DL-MAP消息， 得到了 "BS ID" 、 "NAP ID" 和 "DCD计数值" ， 但并没 有进行 "NAP ID" 、 "BS ID"的有效性判断， 这样会导致即使这次 DL-MAP 解码出来的 "NAP ID" 或 "BS ID" 本身无效， 终端仍然会进行后续获取 DCD 等消息流程， 从而增加了终端进行网络发现和选择的时间， 影响了终 端接入网络的速度。 发明内容
本发明所要解决的技术问题是提供一种加快无线通信系统终端进入网 络的方法， 以改进原有协议流程， 减少终端进行网络发现和选择的时间， 从 而提高终端接入网络的速度。
为了解决上述问题，本发明提供了一种加快无线通信系统终端进入网络 的方法， 包括以下步骤：
( a )无线终端接收系统参数信息， 在得到基站标识 BS ID以及网络接 入提供商标识 NAP ID的系统信息后， 立即对所述 NAP ID的有效性， 或者 对所述 NAP ID及 BS ID的有效性进行判断；
( b )如果判断的结果为有效， 所述终端依据其存有的信息继续进行所 述网络发现和选择后续的流程； 如果判断其无效， 则进行新的网络发现和选 择流程。
进一步地，
若所述终端存有以前连接信息，则步骤（a )中，对所述 NAP ID及 BS ID 的有效性进行判断；
若所述终端存有订阅时的配置信息， 则步骤（a ) 中， 对所述 NAP ID 的有效性进行判断。
进一步地， 步骤（b ) 所述后续的流程包括接收和解析处理物理信道参 数消息。
进一步地， 步骤（b ) 中如果判断结果为无效， 则所述终端不按照现有 协议接收和解析处理物理信道参数消息， 而开始新的网络发现和选择流程。
进一步地， 步骤（a )所述终端通过同步下行信道并解析 DL-MAP消息 而得到所述 BS ID、 所述 NAP ID以及下行信道描述符 DCD计数值。
进一步地， 步骤（a )所述终端存有以前连接信息， 步骤（b )所述后续 的流程包括以下步骤：
( bl )判断所述 DCD计数值是否与终端保存的 DCD计数值匹配，若匹 配， 则结束网络发现和选择； 若不匹配则执行步骤（b2 ) ；
( b2 收和解析处理 DCD消息和上行信道描述符 UCD消息以及网络 服务提供商标识 NSP改变计数值， 并按照协议继续后续流程的执行。
进一步地， 步骤（a )所述终端存有订阅时的配置信息， 步骤（b )所述 后续的流程包括： 接收和解析处理 DCD消息和 UCD消息以及 NSP改变计 数值， 并按照协议继续后续流程的执行。
本发明在基于 "已有连接信息" 的网络发现和选择流程时， 通过接收无 线通信的系统信息而获取了 BS ID及 NAP ID后 ,首先进行 BS ID及 NAP ID 的有效性判断，之后再进行后续流程；或者在基于 "已有订阅时的配置信息" 的网络发现和选择流程时， 通过首先进行 NAP ID的有效性判断之后再进行 后续流程， 从而节省了原有协议流程中在 NAP ID或 BS ID无效情况下仍需 继续进行消息接收、解码等一系列无效过程，从而加快了终端接入网络的速 度。 附图概述 图 1是本发明实施例对 WiMAX网络基于上一次连接信息的网络发现和 选择的优化流程；
图 2是本发明实施例对 WiMAX网络基于订阅时的配置信息的网络发现 和选择的优化流程。
本发明的较佳实施方式
本发明提供的加快无线通信系统终端进入网络的方法包括以下步骤： 无线终端接收系统参数信息，在得到 BS ID以及 NAP ID的系统信息后， 立即对 NAP ID的有效性， 或对 BS ID及 NAP ID的有效性进行判断；
如杲判断结果为有效， 继续进行后续的接收、解析处理物理信道参数消 息的流程； 如果判断其无效， 则进行新的网络发现和选择流程。
通过上面方法步骤，只有在 NAP ID或 BS ID及 NAP ID有效的情况下， 才去继续接收处理物理层配置消息， 避免了在 NAP ID或 BS ID无效的情况 下也得继续接收处理物理层配置等消息过程，从而加快了终端发现和选择网 络过程。
以下结合具体的实施例和附图来详细阐述本发明上述技术方案。
实施例 1 , 在终端存有以前连接信息的情况下， 本发明实施例实现网络 发现和选择的方法流程如图 1所示， 包括如下步骤：
步骤 101 : 同步下行信道， 解析 DL-MAP消息， 分别得到 NAP ID、 BS
ID以及 DCD计数值；
步骤 102: 判断 NAP ID和 BS ID是否和终端保存的值匹配， 如果匹配 则执行步骤 103; 如果不匹配则转向步骤 105执行；
步骤 103: 判断 DCD计数值是否和终端保存的值匹配； 如果匹配则转 步骤 104执行； 如果不匹配则执行步骤 106;
步骤 104: 网络发现和选择结束；
步骤 105: 终止原协议中后续流程， 重新开始网络发现和选择， 即无线 终端不需要再按照协议接收和解析处理物理信道参数消息；
步骤 106:等待、扫描得到 DCD和上行信道描述符（ UCD， Upload Channel Descriptor ) 消息以及 NSP改变计数值； 并按照协议继续后续流程。 实施例 2， 在终端有订阅时的配置信息的情况下， 本发明实施例实现网 络发现和选择的方法流程如图 2所示， 包括如下步骤：
步骤 201: 同步下行信道， 解析 DL-MAP消息， 分别得到 NAP ID、 BS ID及 DCD计数值；
202: 判断 NAP ID是否和终端保存的订阅时的配置信息匹配， 如果匹 配则执行 203; 如果不匹配则转向步骤 204执行；
203: 接收 DCD和 UCD等物理层配置消息以及 NSP改变计数值； 并按 照协议继续后续流程；
204: 终止原协议中的后续流程， 重新开始网络发现和选择过程。
虽然本发明已以较佳实施例揭露如上， 然其并非用以限定本发明，任何 熟习此技艺者，在不脱离本发明的精神和范围内，当可作些许的更动与润饰， 因此本发明的保护范围当以前述权利要求书所界定者为准。
工业实用性
本发明提供了一种加快无线通信系统终端进入网络的方法， 基于 "已有 连接信息"或 "已有订阅时的配置信息" 的网络发现和选择流程， 通过接收 系统信息而获取了 NAP ID及 BS ID后， 首先进行 NAP ID或 NAP ID及 BS ID有效性的判断，之后再进行后续流程。由此避免了原有协议流程中在 NAP ID或 BS ID无效情况下仍需继续进行消息接收、 解码等一系列无效过程， 从而加快了终端接入网络的速度。

Claims

权 利 要 求 书
1、 一种加快无线通信系统终端进入网络的方法， 包括以下步骤：
( a )无线终端接收系统参数信息， 在得到基站标识 BS ID以及网络接 入提供商标识 NAP ID的系统信息后， 立即对所述 NAP ID的有效性， 或者 对所述 NAP ID及 BS ID的有效性进行判断；
( b )如果判断的结果为有效， 所述终端依据其存有的信息继续进行所 述网络发现和选择后续的流程； 如果判断其无效， 则进行新的网络发现和选 择流程。
2、 按照权利要求 1所述的方法， 其特征在于，
若所述终端存有以前连接信息，则步骤（a )中，对所述 NAP ID及 BS ID 的有效性进行判断；
若所述终端存有订阅时的配置信息， 则步骤（a ) 中， 对所述 NAP ID 的有效性进行判断。
3、 按照权利要求 1所述的方法， 其特征在于， 步骤（b )所述后续的流 程包括接收和解析处理物理信道参数消息。
4、 按照权利要求 1所述的方法， 其特征在于， 步骤（b )中如果判断结 果为无效， 则所述终端不按照现有协议接收和解析处理物理信道参数消息， 而开始新的网络发现和选择流程。
5、 按照权利要求 1所述的方法， 其特征在于， 步骤（a )所述终端通过 同步下行信道并解析 DL-MAP消息而得到所述 BS ID、 所述 NAP ID以及下 行信道描述符 DCD计数值。
6、 按照权利要求 5所述的方法， 其特征在于， 步骤（a )所述终端存有 以前连接信息， 步骤（b )所述后续的流程包括以下步骤：
( bl )判断所述 DCD计数值是否与终端保存的 DCD计数值匹配，若匹 配， 则结束网络发现和选择； 若不匹配则执行步骤（b2 ) ；
( b2 M矣收和解析处理 DCD消息和上行信道描述符 UCD消息以及网络 服务提供商标识 NSP改变计数值， 并按照协议继续后续流程的执行。
7、 按照权利要求 4所述的方法， 其特征在于， 步骤（a )所述终端存有 订阅时的配置信息， 步骤（b )所述后续的流程包括： 接收和解析处理 DCD 消息和 UCD消息以及 NSP改变计数值， 并按照协议继续后续流程的执行。
PCT/CN2007/003921 2007-07-31 2007-12-29 Method for accelerating terminal of wireless communication system accessing network WO2009015540A1 (en)

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Application Number Priority Date Filing Date Title
JP2010518475A JP5001430B2 (ja) 2007-07-31 2007-12-29 無線通信システム端末のネットワークへのアクセスを加速する方法
EP07855921.8A EP2180639B1 (en) 2007-07-31 2007-12-29 Method for accelerating terminal of wireless communication system accessing network
US12/670,399 US8320316B2 (en) 2007-07-31 2007-12-29 Method for accelerating terminal of wireless communication system accessing network

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CN200710143444.0 2007-07-31
CN2007101434440A CN101360026B (zh) 2007-07-31 2007-07-31 一种加快无线通信系统终端进入网络的方法

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CN101360026B (zh) 2010-12-29
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US20100195534A1 (en) 2010-08-05
CN101360026A (zh) 2009-02-04
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US8320316B2 (en) 2012-11-27

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