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Interference control method, equipment and system for random access

A random access and interference control technology, applied in the field of communication, can solve problems such as interference, micro-station interference, and different transmission power

Inactive Publication Date: 2015-07-01
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the rated transmission power of the macro station and the micro station in HetNet are not the same, which will cause interference problems during the random access process of RACH (Random Access Channel): in HetNet, for those residing in the macro station If the UE performs RACH ramping (increasing power) access, the preamble (random access preamble) sent by the UE will cause burst interference to the micro station
[0005] The existing technology only solves how to eliminate the impact of the sudden interference generated by the RACH UE on the external loop power control, but does not suppress the interference and solve the throughput impact caused by the sudden interference

Method used

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  • Interference control method, equipment and system for random access
  • Interference control method, equipment and system for random access
  • Interference control method, equipment and system for random access

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] see figure 2 , this embodiment provides an interference control method for random access, including:

[0091] 201. Obtain the primary scrambling code of the random access preamble broadcast by the wireless network control device;

[0092] 202. Obtain a random access preamble sent by the user equipment UE;

[0093] 203. According to the primary scrambling code of the broadcasted random access preamble and the random access preamble sent by the UE, identify that the UE is a UE camped on the first base station where the adjacent cell is located;

[0094] 204. Issue an acquisition indicator channel to the UE, indicating whether the UE can access uplink.

[0095] In this embodiment, if receiving the random access message sent by the UE, further includes:

[0096] Forwarding the random access message to a radio network controller, so that the radio network controller controls the first base station to send a forward import access channel or a high-speed downlink shared ch...

Embodiment 2

[0114] see image 3 , this embodiment provides an interference control method for random access, including:

[0115] 301. Send a random access preamble, so that a second base station acquires the random access preamble, where the second base station is a base station where a neighboring cell of the cell where the first base station where the UE camps is located;

[0116] 302. Receive an acquisition indicator channel delivered by the second base station;

[0117] 303. Determine whether the second base station allows uplink access according to the instruction for acquiring an indicator channel sent by the second base station, and if uplink access is allowed, send a random access message to the second base station.

[0118] Specifically, the random access message is scrambled using the scrambling code of the first base station or the second base station, so that when the second base station or the first base station receives the random access message identifying whether the ran...

Embodiment 3

[0149] see Figure 4 , this embodiment provides an interference control method for random access, including:

[0150] 401. Configure to allow user equipment UE uplink access at the second base station or allow the UE to receive the acquisition indicator channel issued by the second base station within the time of receiving the acquisition indicator channel issued by the first base station, wherein, The first base station is a base station where the UE resides, and the second base station is a base station where a neighboring cell of the cell where the first base station is located;

[0151] 402. Send random access related information of the second base station to the UE according to the configuration, and enter a random access procedure according to the random access related information;

[0152] 403. Send the primary scrambling code of the random access preamble broadcast by the first base station to the second base station according to the configuration, so that after the s...

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Abstract

A method, device and system for interference control for random access are disclosed in the present invention and belong to the communication technical field. The method includes: obtaining a primary scrambling code of a random access preamble broadcasted by a radio network control device; obtaining a random access preamble transmitted by a User Equipment (UE); identifying, according to the primary scrambling code of the broadcasted random access preamble and the random access preamble transmitted by the UE, that the UE is the UE which resides in a first base station; sending downward to the UE an acquisition indication channel and indicating whether the UE is capable of uplink access. In the present invention, by the acquisition indication channel being sent downward to the UE by a second base station in an adjacent cell of the first base station, the UE is indicated to perform uplink access at the second base station; accordingly, the UE does not need to receive an Acquisition Indication Channel (AICH) from the first base station located therein and to continue to send the random access preamble to the first base station. Therefore, interference to uplink of the second base station from the random access of the UE is restrained, and uplink throughput of the second base station is increased, and meanwhile, transmission power of the UE can be saved.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a random access interference control method, device and system. Background technique [0002] 3GPP (The 3rd Generation Partnership Project, third generation partnership project) plans to introduce HetNet (Heterogeneous Network, heterogeneous network) technology in UMTS R12 (Universal Mobile Telecommunications System, universal mobile communication system). HetNet is a wireless access network technology for multi-layer networking. Compared with the traditional wireless access network, HetNet adds one or more micro network layers on the basis of the macro network layer. The base stations in the micro network are also called micro stations or LPN (Low Power Node, low power node). Compared with the expansion of a single macro network, the heterogeneous network has the advantages of low cost, easy deployment and maintenance, and is a hot spot in the current wireless co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/02H04W74/08
CPCH04W52/04H04W74/002H04L1/20H04W74/004H04W74/0833H04J11/0053
Inventor 周涵花梦铁晓磊
Owner HUAWEI TECH CO LTD
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