A method, device and system for eliminating interference in random access

A technology for eliminating interference and random access, which is applied in the transmission system, selection device, and data exchange through path configuration. It can solve problems such as increasing time-frequency resource overhead, increasing system load, and co-frequency interference to improve user experience. , reduce interference, and reduce the effect of co-channel interference

Active Publication Date: 2008-02-20
XFUSION DIGITAL TECH CO LTD
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Problems solved by technology

However, the above two solutions have the following disadvantages: 1. The overhead of time-frequency resources in the system is increased, thereby increasing the system load; 2. The same-frequency interference in the system can only be reduced to a limited extent, and different When terminal stations select the same Ranging Opportunity, especially in areas where terminal stations are rela

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  • A method, device and system for eliminating interference in random access
  • A method, device and system for eliminating interference in random access
  • A method, device and system for eliminating interference in random access

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Embodiment Construction

[0029] In the WiMAX system, in order to reduce the co-channel interference between the terminal stations to the greatest extent, in the embodiment of the present invention, the base station (BS) selects the ranging code signal received at the same ranging code transmission opportunity (RangingOpportunity) by the base station (BS) (Ranging code signal) is detected; and the detected signal of the Ranging code corresponding to the selected candidate code is eliminated as interference.

[0030]Wherein, the candidate code is a ranging code (also referred to as a Ranging code) generated locally by the BS for detecting a received ranging code signal. The number and types of candidate codes correspond to the Ranging codes supported by the BS. For example, the BS supports three kinds of Ranging codes, whose labels are 1, 2, and 3 respectively. Then, the BS also generates three candidate codes locally, and their labels are respectively 1, 2 and 3.

[0031] In practical applications, th...

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PUM

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Abstract

The utility model discloses an interference eliminating method for the random access to the base station, which is characterized in that: choosing candidate code in order to detect the machined received ranging code signal when the ranging code is transmitted, and eliminating the ranging signal related to the selected candidate code. The utility model has the advantages that reducing the co-frequency interference in the random access in the communication system, improving the detection performance of the base station, ensuring a high service quality of the base station, and improving the experience in using. The utility model also discloses a communicator and the related system.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, device and system for eliminating interference in random access. Background technique [0002] The Worldwide Interoperability for Microwave Access (WiMAX) system is a communication system based on Orthogonal Frequency Division Multiplexing (OFDM) technology. Referring to Figure 1, in the WiMAX system, the smallest unit of resource allocation is called the smallest time-frequency resource block (Slot), and a Slot consists of "M sub-channels × N symbols", where the sub-channels are frequency domain resources, A frequency band contains a set number of sub-channels, and a Slot contains M sub-channels; while a symbol is the smallest unit of time resources, a transmission time interval (TTI) contains a set number of symbols, and a Slot contains N symbols. The value of M and N depends on: 1. Whether it is uplink (Uplink, UL) or downlink (Downlink, DL); 2. Whether to use all...

Claims

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Application Information

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IPC IPC(8): H04B1/707H04Q7/38H04L12/28
Inventor 阙程晟蒋培刚胡宏杰徐波
Owner XFUSION DIGITAL TECH CO LTD
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