Routing method, device and system of multihop relay network

A multi-hop relay and routing technology, applied in electrical components, wireless communication, etc., can solve problems such as the inability to apply LTE systems, achieve the effects of expanding coverage and increasing data transmission rates

Active Publication Date: 2010-10-27
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
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Embodiment 1

[0062] First, the UE and the eNB complete the UE's network access process, 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 performed in the following steps.

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

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

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

[0066] The eNB makes a decision according to the measurement result 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 establishes a new routing table entry, which is used to instruct the UE to atta...

Embodiment 2

[0075] Intra-cell handover mainly includes UE handover from eNB to RN, and handover from RN to eNB. When the UE switches from the eNB to the RN, it is the same as the routing update process in the first embodiment, so it is not repeated here. This embodiment discusses the case of handover from RN to eNB. like Image 6 The specific operation process is as follows:

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

[0077] Currently, the UE is attached to the RN working in the 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 transmissi...

Embodiment 3

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

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

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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 Applications(China)
IPC IPC(8): H04W40/04H04W40/22
Inventor 王可孙晓婷彭炎
Owner HUAWEI TECH CO LTD
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