Superposition coding in a wireless communication system

A technology of overlapping coding and coding, applied in transmission systems, digital transmission systems, transmission control/equalization, etc., can solve the problems of low cellular phone throughput, low FLSINR, and high potential throughput.

Inactive Publication Date: 2009-05-13
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This leads to the problem that the weakest set of users limits the overall system data throughput performance
Furthermore, users with lower FL SINR are disadvantaged in having lower than potential throughput and higher latency for their particular cell phone

Method used

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  • Superposition coding in a wireless communication system
  • Superposition coding in a wireless communication system
  • Superposition coding in a wireless communication system

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Embodiment Construction

[0035] Cellular telephones are used by millions of people in the United States and around the world. One of the most interesting things about cellular phones is that they are actually sophisticated radio devices. These sophisticated radios may be incorporated into wireless telephone systems, such as cellular systems, in order to provide communications.

[0036] In a cellular system, a geographical area, such as a city, can be divided into cells. Each cell may have a base station, which includes towers and small buildings that house radios. A base station within a cell serves the communication link needs of cellular telephones located within that cell.

[0037] The communication link requirements of a cell phone can be divided into two parts: the reverse link (cell phone to base station link) and the forward link (base station to cell phone link). During forward link operation, the base station may transmit data packets to cellular telephones located within the cell. For ex...

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Abstract

The present patent application comprises a method and apparatus to compile a superposition coded packet by compiling user candidates for superposition coding, ranking the user candidates based on a result of an evaluation function, selecting a deserving user candidate from among the user candidates, and compiling a superposition coded packet by adding other user data packets to a packet of the deserving user data packet, wherein the data packets for the user candidates may conform to a plurality of different formats and wireless communication standards.

Description

[0001] This application claims priority to US Provisional Application No. 60 / 794,874, filed May 24, 2006, entitled "Superposition Coding ina Wireless Communication System," the entire disclosure of which is considered a part of this application publication. technical field [0002] The present invention relates generally to methods and apparatus for scheduling and wirelessly transmitting packets of information, and more particularly to using superposition coding to improve forward link (FL) data throughput performance in wireless communication systems. Background technique [0003] There are various wireless communication standards by which communications in cellular communication systems can be controlled. CDMA2000 1xEV-DO standard ("cdma2000 high-speed packet data air interface specification", TIA / EIA / IS-856) is a system for packet data communication developed by Qualcomm in the late 1990s to provide General Data Communication Services. The 1xEV-DO system adopts an inhere...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04B7/005
Inventor K·希兰N·布尚R·A·A·阿塔尔
Owner QUALCOMM INC
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