Scheduling in wireless communication systems

• US 8,045,519 B2
• Filed: 10/06/2009
• Issued: 10/25/2011
• Est. Priority Date: 10/04/2005
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola Mobility, Inc. (Lenovo Group Ltd.)
• Inventors: Love, Robert T., Stewart, Kenneth A., Kuchibhotla, Ravi
• Primary Examiner(s): GELIN, JEAN ALLAND
• Application Number:
  US12/574,487
• Publication Number:
  US 20100020716A1
• Time in Patent Office: 749 Days
• Field of Search: 370/310, 370/328, 370/329, 370/330, 370/331, 370/335, 370/336, 370/337, 370/338, 455/450, 455/421, 455/452, 455/453
• US Class Current: 370/329
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/30 Resource management for broadcast services
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support

Abstract

A method in a wireless communication network (100) wherein information is communicated in a frame structure wherein each frame includes multiple sub-frames, including grouping at least two wireless communication terminals in a group, assigning the group to less than all sub-frames constituting a communication frame, and assigning a radio resource assignment control channel of one or more assigned sub-frames to the group. The control channel is used to assign radio resources to one or more terminals of the group.

Claims

1. A method in a wireless communication terminal, the method comprising:

receiving a radio frame including a sequence of sub-frames, each sub-frame having a control portion, each control portion including a first control channel and a second control channel;

monitoring at least a first control channel of a first sub-frame,

determining whether a first radio resource has been assigned to the terminal by the first control channel of the first sub-frame; and

monitoring a second control channel of a second sub-frame only if a condition associated with the first control channel of the first sub-frame is satisfied.

2. The method of claim 1, monitoring the second control channel only if a first radio resource is not assigned by the first control channel, wherein the condition is whether a first radio resource is assigned by the first control channel.

3. The method of claim 1, monitoring the second control channel only if the terminal experiences a failed transmission on the first radio resource assigned by the first control channel, wherein the condition is whether the terminal experiences a failed transmission on the first radio resource.

4. The method of claim 1, monitoring the second control channel only if the terminal experiences a failed reception on the first radio resource assigned by the first control channel, wherein the condition is whether the terminal experiences a failed reception on the first radio resource.

5. The method of claim 1, receiving the first control channel and the second control channel in a common sub-frame, wherein the first sub-frame is the same as the second sub-frame.

6. The method of claim 1, receiving the first control channel and the second control channel in different sub-frames, wherein the first sub-frame is different than the second sub-frame.

7. A method in a wireless communication terminal, the method comprising:

receiving at least two distinct identities assigned by a wireless infrastructure entity;

monitoring a control region in a radio frame;

determining whether the terminal has been identified, in the control region, by at least one of the two distinct identities assigned to the terminal;

determining a type of radio resource assigned to the terminal using the identity with which the terminal has been identified.

8. The method in claim 7, determining a type of radio resource assigned to the terminal includes determining whether the terminal has been assigned a radio resource associated with a first transmission or a re-transmission.

9. The method in claim 7, determining a type of radio resource assigned to the terminal includes determining whether the terminal has been assigned a radio resource associated with a voice transmission or a data transmission.

10. The method in claim 7, determining a type of radio resource assigned to the terminal includes determining whether the terminal has been assigned an uplink radio resource or a downlink radio resource.

11. A method in a wireless communication terminal, the method comprising:

determining an assignment of a radio resource to the terminal based on information in a control channel associated with a group to which the terminal is assigned by a wireless communication infrastructure entity;

determining a radio resource mapping for the terminal based on information on the control channel,

receiving radio resource assignment information, the radio resource information indicating assigned radio resource information that is valid for more than one sub-frame.

12. A method in a wireless communication terminal, the method comprising:

determining an assignment of a radio resource to the terminal based on information in a control channel associated with a group to which the terminal is assigned by a wireless communication infrastructure entity;

determining a radio resource mapping for the terminal based on information on the control channel,

the control channel information including additional information associated with the terminal indicating where to obtain a resource assignment.