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Opportunistic network interference cancellation for wireless networks

A technology that interferes with transmission and wireless devices, applied in the field of communication, can solve the problem that the global decoding order cannot be used

Inactive Publication Date: 2012-07-25
ALCATEL LUCENT SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a global decoding order is usually not available even in moderately sized cellular networks

Method used

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  • Opportunistic network interference cancellation for wireless networks
  • Opportunistic network interference cancellation for wireless networks
  • Opportunistic network interference cancellation for wireless networks

Examples

Experimental program
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Embodiment Construction

[0020] A joint set of problems addressed by embodiments of the present invention relates to the effectiveness of the overall approach for interference cancellation. Sending decoded information bits that can potentially be used for interference cancellation from one base station to another increases the load carried by the backhaul link. Since the capacity of the backhaul links is an important consideration in the overall system design, it is required to ensure that the load on these links is kept to a minimum by sending decoded information bits only to those base stations that can be used for interference cancellation.

[0021] So far, the embodiments presented here combine methods and protocols to determine when decoded information bits at a base station should be sent to another base station for interference cancellation. These methods and protocols can be implemented in a distributed fashion, allowing a practically distributed approach for network interference cancellation,...

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Abstract

Embodiments are described herein to provide improvements to known network interference cancellation techniques. One general approach involves a receiver attempting to decode a received signal which includes signaling from a wireless device transmission and at least one interfering transmission. If the receiver is unsuccessful in attempting to decode the received signal, decoded signaling that corresponds to the interfering transmission is requested. The receiver then uses the decoded signaling to decode the received signal.

Description

technical field [0001] The present invention relates generally to communications, and more specifically, the present invention relates to interference cancellation in communication systems. Background technique [0002] This section introduces aspects that may contribute to a better understanding of the invention. Therefore, the statements in this section should be read in this light, and should not be understood as an admission of what is or is not prior art. [0003] Uplink transmissions (also referred to as reverse link transmissions) in a cellular network comprising multiple base stations are typically subject to excessive interference from out-of-cell transmissions. Typically, in such a network, mobile stations communicating with different base stations (also referred to simply as mobile bodies) are respectively scheduled by respective base stations for transmission. We call the base station that communicates with the mobile station the primary base station of the mob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J11/00
CPCH04L5/0037H04L27/2647H04L25/0204H04J11/0059H04L25/0226H04J11/0053H04L5/0048H04L5/0023H04B15/00
Inventor K·巴拉钱德兰J·H·康K·M·卡拉卡亚利K·M·雷热
Owner ALCATEL LUCENT SAS
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