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Relay node network access method and system thereof

A technology for relay node and network access, applied in the field of mobile communication, can solve the problems of RN not being able to access, RN not being able to access the network to work normally, etc., and achieving the effect of small protocol changes

Active Publication Date: 2012-02-08
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, because the network parameters (such as the identity and load of the DeNB, or the load of the MME) will change, and the deployment location of the RN will change, so this pre-configuration method is likely to prevent the RN from accessing the network to work normally. Especially when the RN needs to be deployed as soon as possible due to an emergency (such as an earthquake disaster), the pre-configuration method prevents the RN from accessing the network to provide coverage services

Method used

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  • Relay node network access method and system thereof
  • Relay node network access method and system thereof
  • Relay node network access method and system thereof

Examples

Experimental program
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Embodiment 1

[0059] The RN pre-configures a list of DeNBs or cells that can be accessed. After the RN is initially powered on, the process of accessing the network is as follows: Figure 4 Shown:

[0060] Step 401, RN selects the cell with the best signal quality (belonging to the DeNB list or cell list) on a certain frequency point according to the DeNB list or cell list that can be accessed, obtains system information, initiates random access, and sends a request to the cell to which the cell belongs. The DeNB sends an RRC Connection Request (RRC ConnectionRequest) message;

[0061] Step 402, the DeNB allocates resources for the RN, and sends an RRC Connection Setup (RRCConnection Setup) message to the RN;

[0062] Step 403: After receiving the establishment of the RRC connection, the RN sends an RRC Connection Setup Complete (RRC Connection Setup Complete) signaling to the DeNB, which includes the type information of the RN; NAS signaling of the core network such as an attach request...

Embodiment 2

[0079] In this embodiment, the RN does not have a pre-configured list of DeNBs or cells that can be accessed. The system message broadcast by the cell includes information about whether the cell allows relay node access, and the RN selects a cell that can be accessed according to the broadcast information.

[0080] Step 501, RN searches for cells within its supported frequency band, selects a cell with the strongest signal quality at a certain frequency point and allows relay node access, reads the system information of this cell, initiates random access in this cell, and sends The base station to which the cell belongs, that is, the DeNB, sends an RRC Connection Request (RRC ConnectionRequest) message;

[0081] Steps 502 and 503 are the same as steps 402 and 403 in the first embodiment. In this embodiment, the RN type information contained in the RRC connection establishment completion signaling sent by the RN to the DeNB in ​​step 503 indicates that the accessed RN is a relay...

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Abstract

The invention discloses a relay node network access method and a system thereof to enable a RN (relay node) to access a network conveniently and rapidly and carry out work smoothly. The method comprises the following steps: in an initial access process of the RN, the RN carries type information in a message sent to a Donor eNB (DeNB), and according to the type information of the RN, the DeNB selects a mobility management entity (MME) supporting the RN for the RN. Through notifying the type information of the RN to an eNB in a phase of establishing RRC (Radio Resource Control) connection by the RN, the eNB can select an appropriate MME for the RN, and a problem of how the eNB acquires the type information of the RN is solved simultaneously. According to the method and the system in the invention, protocol change is small, and the RN can access the network and carry out work smoothly.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a method and system for a relay node to access a network. Background technique [0002] The third-generation mobile communication Long Term Evolution (LTE, Long Term Evolution) system consists of an Evolved Universal Terrestrial Radio Access Network (E-UTRAN, Evolved Universal Terrestrial Radio AccessNetwork), a User Equipment (UE, User Equipment), and an evolved packet core network (EPC, Evolved Packet Core). Among them, the E-UTRAN is composed of an enhanced base station (eNB) of an access network element. The eNB is connected to the terminal UE through the Uu interface, and is connected to the network element of the core network such as a Mobility Management Entity (MME, Mobility Management Entity) through the S1 interface. [0003] In order to meet the growing demand for large bandwidth and high-speed mobile access, Third Generation Partnership Projects (3GPP, Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W48/10H04W48/20H04W76/02
CPCH04W24/02H04W84/047H04B7/2606
Inventor 邓云王冠宙
Owner ZTE CORP