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Notification and transmission method of access capability of relay node

A relay node and access capability technology, which is applied in the notification and transmission fields of access capabilities, can solve the problems of delaying the normal access of Relay, delaying the switching process of Relay cells, and not supporting access of relay nodes, so as to avoid access Incoming resource waste and access delay effects

Active Publication Date: 2011-07-13
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the cell that the Relay is trying to access does not have this capability, the random access resources of the cell will be consumed when the Relay accesses, and the normal access of the Relay will also be delayed
In addition, because the Relay needs to support the ability to move, the source base station does not know the access capability information of the relay node in the target cell during the handover, so the selected target cell may not support the access of the relay node, and the Delay Relay's cell handover process

Method used

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  • Notification and transmission method of access capability of relay node
  • Notification and transmission method of access capability of relay node
  • Notification and transmission method of access capability of relay node

Examples

Experimental program
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Embodiment 1

[0051] In the LTE system, the cell under the jurisdiction of the base station (eNB) broadcasts system information. In LTE Release9, the system information includes: Master Information Block (Master Information Block, MIB), System Information Block type (System Information Blocktype, SIB) 1 to SIB12. In a specific implementation, the system message includes: characteristic information such as cell identification information, frequency, and bandwidth, and neighbor cell information for the user equipment to perform cell selection or cell reselection, and the system message also includes: the user equipment initiates an RRC connection Configuration parameters used to request access to the current cell (including random access configuration parameters), etc.

[0052] In order to indicate the relay node access capability of the cell, it is necessary to expand the content of the system message to include the capability information of the relay node access. In this embodiment, the syst...

Embodiment 2

[0059]In the LTE system, a cell under the jurisdiction of a base station (eNB) broadcasts system information. In LTE Release9, the system information includes: MIB, SIB1 to SIB12. In order to make the system message include the capability information of the relay node access, the content of the system message needs to be expanded. In this embodiment, the system message includes chip resources (PreambleIndex and / or Mask Index) dedicated to Relay random access : If the cell allows Relay access, the system information of the cell is configured with effective chip resources dedicated to Relay random access; if the cell does not allow Relay access, the system information of the cell is not configured with the above Invalid tile resource or configured tile resource.

[0060] After the Relay is initially powered on, the Relay implements cell selection or cell reselection, selects the cell with the best signal quality on a certain frequency point within the supported frequency band, a...

Embodiment 3

[0064] In the LTE system, the Relay has been connected to cell 1 of base station 1 (source base station) and is in a connected state as an RN, and the relay provides services for user equipment within coverage. In this embodiment, the Relay is configured on a fast-running train, and the Relay provides services for user equipment on the train. Due to the mobility of the train, the Relay needs to meet the mobility characteristics. Since the Relay simultaneously provides services to multiple user equipments within its coverage area, the handover of the Relay will be accompanied by the state transition of these user equipments (the user equipment accesses the network through the target cell of the handover by means of the Relay). The handover process of the Relay is similar to the handover process of a common user equipment.

[0065] When the Relay is handed over, the source base station needs to determine the target cell for the handover. The target cell not only needs to have a ...

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Abstract

The invention discloses a notification and transmission method of the access capability of a relay node. The notification method of the access capability of a relay node comprises the following steps: a cell broadcasts the access capability information of a relay node of the cell by system messages; and whether the relay node can access the cell is judged by the relay node according to the capability information. In the notification and transmission method disclosed by the invention, the relay node can acquire the access capability information of the relay node of the cell so as to provide a reference for the relay node in selecting the access cell, so that the problems that the access resource is wasted and the access is delayed as a relay node accesses a cell which does not support the access of the relay node are avoided.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a method for notifying and transmitting the access capability of a relay node. Background technique [0002] Currently, the Third Generation Partnership Projects (Third Generation Partnership Projects, 3GPP for short) launch the Long-Term Evolution advance (LTE-Advanced for short) standard. LTE-Advanced retains the core of LTE for the evolution of Long-Term Evolution (LTE for short), and uses a series of technologies to expand the frequency domain and air domain on this basis to improve spectrum utilization and increase system capacity. capacity etc. The wireless relay (Relay) technology is one of the technologies in LTE-Advanced, which aims to expand the coverage of the cell, reduce the dead zone area in communication, balance the load, transfer the business in the hot spot area, and save the terminal (or called user equipment ( User Equipment, referred to as UE)) transmit p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W48/10H04W48/20H04W74/08H04W92/20
Inventor 邓云
Owner ZTE CORP
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