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Method and apparatus for uplink scheduling signaling in a wireless communication

A link scheduling and scheduler technology, applied in wireless communication, data exchange through path configuration, modulation carrier system, etc., can solve problems such as high overhead

Inactive Publication Date: 2009-11-11
INTERDIGITAL TECH CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, 7 bits results in considerable overhead for the WTRU's scheduling requests and for the network's uplink scheduling grants

Method used

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  • Method and apparatus for uplink scheduling signaling in a wireless communication
  • Method and apparatus for uplink scheduling signaling in a wireless communication
  • Method and apparatus for uplink scheduling signaling in a wireless communication

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Embodiment

[0034] 1. A method for uplink scheduling signaling of a wireless transmit / receive unit (WTRU), the method comprising:

[0035] The uplink scheduling request is mapped using an N-bit index value, where N is selected to provide a mapping resolution less than the full mapping resolution, and the index value is related to the uplink scheduling used for WTRU resource allocation The integer factor of the parameter corresponds to the integer factor, the integer has two or more factors, and each factor is a prime number less than 7; and

[0036] The index value is transmitted to the network entity in the uplink scheduling request.

[0037] 2. The method according to embodiment 1, wherein the parameter is a data buffer occupancy rate expressed by the number of bits that need to be scheduled for transmission in the uplink.

[0038] 3. The method according to any one of the above embodiments, wherein the resource allocation is based on resource block (RB) units.

[0039] 4. The method accord...

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PUM

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Abstract

A method and apparatus for efficient uplink scheduling grant and scheduling request signaling for evolved universal terrestrial radio access ( E-UTRA) are disclosed. A wireless transmit / receive unit sends an uplink scheduling request to a Node-B whereby the Node-B sends the uplink scheduling grant in response to the uplink scheduling request. The uplink scheduling request includes a data, buffer occupancy value that indicates the amount of data that needs' to be transmitted in the uplink. The amount of data is quantized to integer factors of the number of bits that may be supported by one RB, and mapped to an index value with N-bit mapping having less than full resolution. The uplink scheduling grant assigns a number of resource blocks to the WTRU for uplink transmission. The number of RBs allocated is mapped to an index value using N-bit mapping having less than full resolution.

Description

Technical field [0001] The present invention relates to a wireless communication system. More particularly, a method and device for efficient uplink scheduling grant and scheduling request signaling for Evolved Universal Terrestrial Radio Access (E-UTRA) are disclosed. Background technique [0002] In order to maintain technological competitiveness for a longer period of time, both the 3rd Generation Partnership Project (3GPP) and 3GPP2 are considering long-term evolution (LTE), in which the evolution of radio interfaces and network architecture is necessary. [0003] Currently, LTE stipulates that uplink transmission should be based on Single Carrier Frequency Division Multiple Access (SC-FDMA). One method of generating SC-FDMA signals is to use Discrete Fourier Transform (DFT) to expand Orthogonal Frequency Division Multiple Access (OFDMA) processing. The DFT of size N is applied to a block with N modulation symbols to convert the modulation symbols into the frequency domain. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28H04W72/14
CPCH04L27/2608H04L27/261H04W72/14H04L5/023H04L5/0044H04W72/23H04W72/21H04L27/2636
Inventor 张国栋A·Y·蔡
Owner INTERDIGITAL TECH CORP
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