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Routing method, device and system of multihop relay network

A multi-hop relay and routing technology, applied in electrical components, wireless communication and other directions, can solve the problem of inability to apply LTE system, and achieve the effect of extending coverage and improving data transmission rate

Active Publication Date: 2013-01-02
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The relay routing scheme is currently defined in 802.16j, but this scheme cannot be applied to the LTE system

Method used

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  • Routing method, device and system of multihop relay network
  • Routing method, device and system of multihop relay network
  • Routing method, device and system of multihop relay network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] First, the UE network access process is completed between the UE and the eNB, including establishing an RRC (Radio Resource Control, radio resource control) connection, completing security authentication, establishing a bearer configuration (Radio Bearing), etc., and then completing the routing update. like Figure 5 As shown, the routing update is specifically performed as follows.

[0063] S501, UE performs corresponding measurement on channel information from RN and eNB.

[0064] S502. The UE reports the measurement result.

[0065] S503. The eNB makes a handover decision, deletes the original routing entry of the UE on the eNB, and generates a new routing entry of the UE.

[0066] The eNB makes a judgment based on the measurement results reported by the UE, selects the attachment site of the UE in the cell, deletes the routing table entry of the UE on the eNB, and creates a new routing table entry, which is used to instruct the UE to attach to the RN . The attac...

Embodiment 2

[0075] Intra-cell handover mainly includes UE handover from eNB to RN, and handover from RN to eNB. When the UE is handed over from the eNB to the RN, the routing update process is the same as that in Embodiment 1, so it will not be repeated here. This embodiment discusses the case of switching from RN to eNB. like Figure 6 As shown, the specific operation process is as follows:

[0076] S601, UE measures channel information of RN and eNB.

[0077] Currently, the UE is attached to the RN working in transparent mode, and receives pilot signaling from the RN and the eNB.

[0078] S602. The UE reports the measurement result.

[0079] S603, the eNB makes a handover decision according to the measurement result reported by the UE, and updates the routing table entry of the UE on the eNB. Updating the routing table entry of the UE on the eNB includes deleting the original routing table entry of the UE and establishing a new routing table entry.

[0080] Since the transmission ...

Embodiment 3

[0093] This embodiment is a route update method for initial network access of a two-hop non-transparent RN. like Figure 9 As shown, the specific process is as follows:

[0094] The non-transparent RN has the capability of resource scheduling, so the UE will directly interact with the first two messages of random access performed by the non-transparent RN. These two messages are: a random access request initiated by UE to RN and a response message of RN after receiving the random access request. At the same time, the RN will request resources on the relay link in order to exchange messages for RRC connection establishment, and then start routing update.

[0095] S901. The UE sends an RRC connection establishment request message to the non-transparent RN.

[0096] S902. After receiving the RRC connection establishment request message sent by the UE, the non-transparent RN establishes a dedicated signaling bearer for the UE on the access link, and at the same time, the RN als...

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Abstract

The embodiment of the invention discloses routing method, device and system of a multihop relay network, relating to the field of wireless communication. The invention can realize the multihop data transmission of an LTE (Long Term Evolution) network under the condition of introducing a relay station. The routing method of the multihop relay network comprises the following steps of: receiving channel information reported by user equipment or a route updating request launched by the user equipment through the relay station; updating the routing table items of the user equipment according to the received channel information or the route updating request; and transmitting updating information to a relay station to be accessed by the user equipment or the relay station launching the route updating request. The embodiment of the invention is suitable for a routing scheme of the LTE network after the relay station is introduced.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a routing method, device and system for a multi-hop relay network. Background technique [0002] With the development of communication technology, LTE (Long Term Evolution, Long Term Evolution) technology has become a development trend of current communication technology. [0003] LTE technology is the evolution of 3G (3rd Generation, third-generation digital communication) technology. It is a global standard of 3.9G. It improves and enhances the air access technology of 3G. It adopts OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) technology) and MIMO (Multiple-Input Multiple-Out-put) as the only standard for the evolution of its wireless network. Under the 20MHz spectrum bandwidth, LTE technology can provide the peak rate of downlink 100Mbit / s and uplink 50Mbit / s. LTE technology improves the performance of cell edge u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/04H04W40/22
Inventor 王可孙晓婷彭炎
Owner HUAWEI TECH CO LTD
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