HARQ process number management for downlink carrier
AssigneeBlackBerry Limited
InventorsSean McBeath, Zhijun Cai, Yi Yu
Life of this patent
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Abstract
A method and apparatus wherein the method comprises maintaining at least first and second Hybrid Automatic Repeat reQuest (HARQ) Process Groups (HPGs), receiving a downlink control information (DCI) message, using at least one of explicit information and implicit information associated with the DCI message to identify one of the HPGs, using at least one of explicit information and implicit information associated with the DCI message to identify a first carrier and generating a transmission of at least one data packet using the identified HPG to an access device via the carrier and a first uplink sub-frame.
Claims18
A method comprising:
- maintaining at least first and second Hybrid Automatic Repeat reQuest (HARQ) Process Groups (HPGs), wherein a combination of one of the at least first and second HPGs and a sub-frame number uniquely identifies a transmission stream and wherein the HPGs are indexed to specific carriers;
- receiving a downlink control information (DCI) message via a carrier;
- using a first information associated with the DCI message to identify one of the HPGs;
- using a second information associated with the DCI message to identify a first carrier;
- generating a transmission of at least one data packet using the identified HPG to an access device via the carrier and a first uplink sub-frame;
- monitoring a Physical Hybrid automatic repeat request Indicator CHannel (PHICH) for HARQ feedback related to the at least one data packet;
- wherein the first information comprises the DCI message carrier.
A method comprising:
- transmitting a data packet via a uplink sub-frame and a first carrier to an access device;
- if a DCI message transmitted from an access device is received in response to said transmitting, the DCI message being associated with the uplink sub-frame and the first carrier and that one of implicitly and explicitly indicates a second carrier, retransmitting the data packet via the uplink sub-frame and the second carrier to the access device;
- otherwise, monitoring a Physical Hybrid automatic repeat request Indicator CHannel (PHICH) for HARQ feedback related to the data packet.
A user agent for use in a wireless communication system comprising:
- a processor programmed to perform the steps of:
- maintaining at least first and second Hybrid Automatic Repeat reQuest (HARQ) Process Groups (HPGs), wherein a combination of one of the at least first and second HPGs and a sub-frame number uniquely identifies a transmission stream and wherein the HPGs are indexed to specific carriers;
- receiving a downlink control information (DCI) message from an access device via a carrier;
- using a first information associated with the DCI message to identify one of the HPGs;
- using a second information associated with the DCI message to identify a first carrier;
- generating a transmission of at least one data packet using the identified HPG to an access device via the carrier and a first uplink sub-frame;
- monitoring a Physical Hybrid automatic repeat request Indicator CHannel (PHICH) for HARQ feedback related to the at least one data packet;
- wherein the first information comprises the DCI message carrier.
A user agent for use in a wireless communication system, the user agent comprising:
- a processor programmed to perform the steps of:
- transmitting a data packet via a uplink sub-frame and a first carrier to an access device;
- if a DCI message transmitted from an access device is received in response to said transmitting, the DCI message being associated with the uplink sub-frame and the first carrier and that one of implicitly and explicitly indicates a second carrier, retransmitting the data packet via the uplink sub-frame and the second carrier to the access device;
- otherwise, monitoring a Physical Hybrid automatic repeat request Indicator CHannel (PHICH) for HARQ feedback related to the data packet.
Dependencies are inferred from the claim text.