Methods and Systems for HARQ Protocols

• US 20140050140A1
• Filed: 08/28/2013
• Published: 02/20/2014
• Est. Priority Date: 04/21/2008
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: Fong, Mo-Han, Vrzic, Sophie, Novak, Robert, Yuan, Jun, Yu, Dong-Sheng
• Granted Patent: US 8,959,410 B2
• Time in Patent Office: Days
• US Class Current: 370/312
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1816 with retransmission of the same, encoded, message
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1896 ARQ related signaling
• CPC Class Codes: H04L 27/2659 Coarse or integer frequency offset determination and synchronisation
• CPC Class Codes: H04L 27/2666 Acquisition of further OFDM parameters, e.g. bandwidth, subcarrier spacing, or guard interval length
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04W 28/04 Error control
• CPC Class Codes: H04W 72/044 based on the type of the allocated resource
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/1268 of uplink data flows
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/30 Resource management for broadcast services
• CPC Class Codes: H04W 72/535 based on resource usage policies
• CPC Class Codes: H04W 88/04 adapted for relaying to or from another terminal or user
• CPC Class Codes: H04W 88/06 : adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

Methods described herein are for wireless communication systems. One aspect of the invention is directed to a method for a HARQ process, in which the HARQ process includes a first transmission of an encoder packet and at least one retransmission. The method involves allocating a transmission resource for each respective transmission. The method involves transmitting control information from a base station to a mobile station for each respective transmission. The control information includes information to uniquely identify the HARQ process and an identification of one of a time resource, a frequency resource and a time and frequency resource that is allocated for the transmission. Other aspects of the invention are directed to acknowledging a downlink HARQ transmission, rescheduling an uplink HARQ transmission, and error recovery for an uplink HARQ transmission.

Claims

1-19. -19. (canceled)

20. A method of allocating resources in a wireless communication system where a base station exchanges messages with one or more mobile stations, comprising:

categorizing the available resources of a frame into persistent resources and non-persistent resources;

assigning a first zone of the frame to the persistent resources and a second zone of the frame to the non-persistent resources;

updating a multicast control segment (MCCS) in a memory at the base station to indicate the current resource allocations in the first and second zones;

allocating the resources in the first zone to downlink traffic in a predefined persistent way and dynamically allocating the resources in the non-persistent zone, based on the MCCS; and

transmitting the frame with the MCCS and the downlink traffic from a base station transmitter.

21. The method as claimed in claim 20, wherein the MCCS comprises a resource assignment bitmap (RAB) and a combination index (CI) to the RAB.

22. The method as claimed in claim 20, wherein the downlink traffic for a mobile station includes an encoded packet.

23. The method as claimed in claim 22, wherein the encoded packet is allocated to a resource in the first zone if the transmission of the encoded packet uses a synchronous type of hybrid automatic repeat request (HARM).

24. The method as claimed in claim 22, wherein the encoded packet is allocated to a resource in the second zone if the transmission of the encoded packet uses an asynchronous type of HARQ.

25. The method as claimed in claim 20, wherein the second zone is further subdivided into second zone partitions, for enabling group assignment of non-persistent resources.

26. The method as claimed in claim 25, wherein the CI signals the second zone partitions within the non-persistent zone to the mobile stations.

27. The method as claimed in claim 20, wherein the first zone is further subdivided into first zone partitions, for enabling group assignment of persistent resources.

28. The method as claimed in claim 27, wherein the CI signals the first zone partitions within the persistent zone to the mobile stations.

29. The method as claimed in claim 20, wherein persistent resources that are unused due to packet arrival jitter, silence state, or early termination of HARQ transmissions are shown as available.

30. An apparatus configured to allocate resources in a wireless communication system, the apparatus comprising:

processing circuitry configured to;

categorize the available resources of a frame into persistent resources and non-persistent resources;

assign a first zone of frame to the persistent resources and a second zone of the frame to the non-persistent resources;

update a multicast control segment (MCCS) in a memory of the apparatus to indicate the current resource allocations in the first and second zones;

allocate the resources in the first zone to downlink traffic in a predefined persistent way and dynamically allocating the resources in the non-persistent zone, based on the MCCS; and

transmit circuitry to transmit the frame with the MCCS and the downlink traffic.

31. The apparatus as claimed in claim 30, wherein the MCCS comprises a resource assignment bitmap (RAB) and a combination index (CI) to the RAB.

32. The apparatus as claimed in claim 30, wherein the downlink traffic includes an encoded packet.

33. The apparatus as claimed in claim 32, wherein an encoded packet is allocated to a resource in the first zone if the transmission of the encoded packet uses a synchronous type of hybrid automatic repeat request (HARQ).

34. The apparatus as claimed in claim 32, wherein an encoded packet is allocated to a resource in the second zone if the transmission of the encoded packet uses an asynchronous type of HARQ.

35. The apparatus as claimed in claim 31, wherein the second zone is further subdivided into second zone partitions, for enabling group assignment of non-persistent resources.

36. The apparatus as claimed in claim 35, wherein the CI signals the second zone partitions within the non-persistent zone to the mobile stations.

37. The method as claimed in claim 31, wherein the first zone is further subdivided into first zone partitions, for enabling group assignment of persistent resources.

38. The apparatus as claimed in claim 37, wherein the CI signals the first zone partitions within the persistent zone to the mobile stations.

39. The apparatus as claimed in claim 30, wherein persistent resources that are unused due to packet arrival jitter, silence state, or early termination of HARQ transmissions are shown as available.