Method and apparatus for channel resource mapping in carrier aggregation

A technology of channel resources and resources, applied in the field of wireless communication, can solve problems such as ambiguity and conflict

Active Publication Date: 2012-10-24
INTERDIGITAL PATENT HLDG INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Application of LTE R8's PHICH parameter selection for resources can lead to ambiguity and conflicts if PHICH is associated to two or more PUSCHs
[0008] PHICH conflicts may also occur in spatial multiplexing

Method used

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  • Method and apparatus for channel resource mapping in carrier aggregation
  • Method and apparatus for channel resource mapping in carrier aggregation
  • Method and apparatus for channel resource mapping in carrier aggregation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0130] CLAIMS 1. A method implemented at a base station for performing feedback channel resource mapping, comprising partitioning at least one of allocated feedback channel resources or feedback channel groups.

[0131] 2. The method according to embodiment 1, further comprising assigning the divided feedback channel resources or feedback channel groups to uplink component carriers.

[0132] 3. The method according to any one of the preceding embodiments, wherein the implicit mapping rule uses feedback channel group numbers and sequence index numbers to correlate divided feedback channel resources or feedback channel groups with uplink component carriers couplet.

[0133] 4. A method implemented at a wireless transmit / receive unit (WTRU) for performing feedback channel resource mapping comprising decoding a downlink control channel associated with an uplink resource grant.

[0134] 5. The method of embodiment 4, further comprising determining a set of dynamic parameters from ...

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Abstract

Methods and apparatus for preventing physical hybrid automatic repeat request (HARQ) indicator channel (PHICH) ambiguities or collisions, for example, in a multi-carrier system or when transmitting multiple streams over multiple antennas, are described. Methods may include dividing resources or groups among multiple component carriers (CCs), using and assigning unused or vacant resources to CCs, forcing usage of adaptive HARQ processes in specified scenarios, setting a value for the cyclic shift of the corresponding uplink demodulation reference signals (DMRS) to a previous value for semi-persistent scheduling, and assigning a different first resource block for semi-persistent scheduling uplink resources and random access response grants for multiple CCs.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 61 / 293,540, filed January 8, 2010, and US Provisional Application No. 61 / 307,721, filed February 24, 2010, the contents of which are hereby incorporated by reference. technical field [0003] This application relates to wireless communications. Background technique [0004] In Long Term Evolution (LTE) Release 8 (R8), a base station can configure a wireless transmit / receive unit (WTRU) with DL resources on a single downlink (DL) carrier and on a single uplink (UL) carrier UL resources. In LTE R8, the uplink (UL) hybrid automatic repeat request (HARQ) mechanism may perform retransmissions of erroneous data packets or misses transmitted by the WTRU. The UL HARQ function can span the physical (PHY) layer and medium access control (MAC) layer. The WTRU receives an acknowledgment / negative acknowledgment (ACK / NACK) on a physical HARQ indicator channel (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L5/00
CPCH04L5/001H04L5/0053H04L1/1812H04L5/0007H04L1/1861H04L5/0023H04L5/0055H04W72/23
Inventor S·纳伊卜纳扎尔K·J-L·潘R·L·奥勒森A·Y·蔡
Owner INTERDIGITAL PATENT HLDG INC
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