METHOD AND APPRATUS FOR SIGNALING THE RELEASE OF A PERSISTENT RESOURCE

摘要

A method and apparatus for signaling the release of a persistent resource in long term evolution (LTE) are disclosed. An indication of the release of a downlink (DL) persistent resource is received by a wireless transmit receive unit (WTRU) from an evolved Node-B (eNB) via a physical downlink control channel (PDCCH). A positive acknowledgement (ACK) is transmitted by the WTRU which denotes that the indication has been received. The PDCCH or a medium access control (MAC) CE may be used by the eNB to signal the indication. At least one bit may be added to contents of the PDCCH to signal whether the PDCCH is for DL persistent or dynamic resource allocation. The DL persistent resource is then released and an indication that the DL persistent resource has been released is transmitted.

主权项

1. A wireless transmit receive unit (WTRU) comprising circuitry configured to:
receive a configuration for persistent resource scheduling in a radio resource control (RRC) message sent from an evolved Node B (eNB), the configuration for persistent resource scheduling comprising an indication of a periodicity of a persistent resource allocation and an indication of one or more hybrid automatic repeat request (HARQ) processes to be used for the persistent resource allocation; receive a first physical downlink control channel (PDCCH) transmission applicable to the persistent resource allocation from the eNB, wherein the WTRU is configured to active persistent resource allocation based on receiving the first PDCCH transmission; receive a reconfiguration of the persistent resource allocation via a second PDCCH transmission from the eNB, wherein the reconfiguration of the persistent resource allocation changes resources and transport format used for the persistent resource allocation without affecting the periodicity of the persistent resource allocation; receive a third PDCCH transmission from the eNB, the third PDCCH transmission comprising a release of the persistent resource allocation; and determine whether or not to transmit an explicit acknowledgement that indicates that the WTRU received the release of the persistent resource allocation in the third PDCCH transmission based on whether the release of the persistent resource allocation is applicable to an uplink persistent resource or a downlink persistent resource, wherein the WTRU is configured to transmit the explicit acknowledgement on condition that the release of the persistent resource allocation in the third PDCCH transmission is applicable to a downlink persistent resource.