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Random access method and base station

A technology of random access and random access preamble, which is applied in the field of communication, can solve problems such as repeated failures of relay stations to access the network, and achieve the effect of improving the success rate and saving time

Inactive Publication Date: 2010-11-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] In consideration of the problem in the related art that when the relay station randomly accesses the base station, it competes with other macro terminals to enter the network, resulting in the failure of the relay station to access the network multiple times, the present invention is proposed. Therefore, the main purpose of the present invention is to provide a random Access method and base station, so as to solve the above-mentioned problems existing in related technologies

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  • Random access method and base station

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Embodiment 1

[0053] According to an embodiment of the present invention, a random access method is provided, which is used for a relay station to perform random access, Figure 5 It is a flowchart of a random access method according to Embodiment 1 of the method of the present invention, as shown in Figure 5 As shown, the following processing is included (step S502-step S506):

[0054] Step S502, the base station allocates a relay station-specific random access preamble to the relay station through a dedicated channel, wherein the relay station-specific random access preamble indicates that the access priority of the relay station is higher than the access priority of ordinary terminals;

[0055] Before performing step S502, the base station first needs to divide a part of the non-contention-based dedicated random access preamble as the relay station dedicated random access preamble.

[0056] Step S504, the base station receives the relay station-specific random access preamble sent by t...

Embodiment 2

[0075] According to an embodiment of the present invention, a random access method is provided for a relay station to perform random access. In the technical solution of the embodiment of the present invention, the following processing needs to be performed first: Since the transmission power of the Relay is much greater than that of a general Macro For the UE, in order to distinguish whether the RAP received by the base station is from the Relay or from the Macro UE, a threshold (that is, a transmit power threshold) may be set before random access initialization. The threshold is between the RAP transmit power of the Relay and the RAP transmit power of the general Macro UE. That is to say, the set transmission power threshold is used to determine whether the random access preamble received by the base station is the random access preamble sent by the relay station, and after the transmission power threshold is set, random access initialization can be performed. Figure 7 It i...

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Abstract

The invention discloses a random access method and a base station. The method comprises the following steps: the base station allocates a random access precursor specially used for a relay station to the relay station, wherein the random access precursor specially used for the relay station indicates that the access priority of the relay station is higher than the access priority of a common terminal; the base station receives the random access precursor sent by the common terminal and the random access precursor which is sent by the relay station and is specially used for the relay station; and when the base station determines that the random access precursor specially used for the relay station is received, non-competitive random access for the relay station is carried out preferentially. By the treatment, the time of randomly accessing the network for the relay station can be saved, and the success rate of randomly accessing the network for the relay station can be improved.

Description

technical field [0001] The present invention relates to the communication field, and in particular, relates to a random access method and a base station. Background technique [0002] A cellular wireless communication system is mainly composed of a terminal, a base station, and a core network. figure 1 It is a schematic diagram of a cellular wireless communication system in the related art, such as figure 1 As shown, a network composed of base stations is called a radio access network (Radio Access Network, RAN for short), and is responsible for access layer affairs, for example, management of radio resources. There may be physical or logical connections between base stations according to the actual situation, such as figure 1 Base station 1 and base station 2 or base station 3 in . Each base station can be connected to one or more core network nodes (CoreNetwork, CN for short). The core network is responsible for non-access stratum transactions, such as location updates...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/08H04W88/08
CPCH04W84/047H04W74/0833H04B7/2606H04W74/0875H04W74/006H04W74/0838
Inventor 沈晓芹马睿杜忠达
Owner ZTE CORP