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Access selection method and device

A technology for access selection and configuration information, applied in the field of communication, can solve the problems of large communication delay and overhead, no IAB selection method, etc., and achieve the effect of reducing communication delay and overhead

Pending Publication Date: 2019-10-18
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides an access selection method and device to at least solve the problem that in the related art, in the process of the UE communicating with the core network through multiple IABs, there is no reasonable IAB selection method, resulting in large communication delay and overhead The problem

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  • Access selection method and device

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0025] In this embodiment, a method for operating in access selection is provided, image 3 is a flowchart of an access selection method according to an embodiment of the present invention, such as image 3 As shown, the process includes the following steps:

[0026] Step S302, the first transmission node receives the configuration information of the parent node or the configuration information of the adjacent cell;

[0027] Optionally, the above configuration information includes at least one of the following: cell priority information, cell level information used to indicate the number of hops to the integrated access backhaul donor IAB donor, system information, resource configuration information, cell access information, cell Selection information, IAB donor information, and IAB information; wherein, the IAB donor includes an IAB base station or an IAB donor distributed unit DU; the IAB donor information or IAB information includes at least one of the following: connectio...

example 1

[0067] IAB carries the IAB level identifier in MIB / SIB, if it is an IAB Donor, the level is 0.

[0068] Then the UE can know the level of the IAB after reading the system information.

[0069] Or, the MIB / SIB does not include the level information of the cell, but includes the cell priority information. Generally speaking, the higher the level, the higher the priority of the cell, but there is not a one-to-one correspondence between the two. Hierarchy information, current load or capacity, the priority information of each cell is determined by itself or the IAB donor.

[0070] Therefore, the UE selects a cell in the following ways:

[0071] In step S81, the UE searches for the cell with the strongest signal on each frequency point, reads SIB information, and obtains IAB level information or cell priority information, PLMN information, etc.

[0072]Step S82, the UE finds a suitable cell satisfying the s criterion according to the measurement result;

[0073] In step S83, the...

example 2

[0075] In addition to carrying the IAB level or cell priority information identifier in the MIB / SIB, if the IAB receives the level or cell priority information of other surrounding IABs, it can also broadcast it through the system information in the form of a neighbor cell level list, and the UE After receiving the information, it can be saved locally. The advantage of doing this is that the UE does not need to read the system information of each cell sequentially to receive the layer information or cell priority information, which reduces the time delay of cell selection.

[0076] Therefore, the UE selects a cell in the following ways:

[0077] Step S91, the UE searches for the cell with the strongest signal on each frequency point, reads the SIB information, and obtains the level or cell priority information of the IAB and adjacent IAB cells;

[0078] Step S92, after learning the cell with the highest IAB level or cell priority information, detect it, select the cell with t...

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Abstract

The invention provides an access selection method and a device, wherein the method comprises the steps that a first transmission node receives the configuration information of a mother node or the configuration information of an adjacent cell; and the first transmission node performs measurement, monitoring or selection on an accessed mother node according to the configuration information. Throughadoption of the IAB selection method and device, the problem of relatively high communication delay and overhead caused by no reasonable IAB selection method in the process of communication between the UE and the core network through a plurality of IABs in the conventional IAB multi-hop network in the prior art is solved, so that the technical effect of reducing the communication delay and overhead is achieved.

Description

technical field [0001] The present invention relates to the communication field, in particular to an access selection method and device. Background technique [0002] With the development of wireless multimedia services, people's demand for high data rate and user experience is increasing, which puts forward higher requirements on the system capacity and coverage of traditional cellular networks. Related technologies In order to improve network capacity and coverage while taking into account the need for flexibility in cell deployment, a relay link supporting wireless backhaul transmission is proposed to implement dense network deployment. We call the node that supports the relay function Relay Node, or RN for short. RN provides functions and services similar to ordinary eNBs to UEs accessing its cell. The wireless interface between RN and UE is called "AccessLink". The eNB serving the RN is called a donor base station (Donor eNB, DeNB for short). The wireless interface b...

Claims

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Application Information

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IPC IPC(8): H04W40/22H04W48/08H04W48/20
CPCH04W40/22H04W48/08H04W48/20H04W48/16H04W40/24H04W76/11H04W76/27H04W16/28H04W24/08H04W24/10H04W72/0446H04W72/0453H04W88/14H04W72/27
Inventor 罗薇陈琳
Owner ZTE CORP
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