Downlink control channel signaling in wireless communication systems
A method in a wireless communication terminal ( 103 ) including receiving a plurality of sub-frames having time-frequency resource elements and resource allocation fields associated with a corresponding sub-frame, wherein the resource allocation fields indicate a resource assignment. In another embodiment, terminal receives a radio frame comprising a plurality of sub-frames and a frequency diverse allocation field indicating frequency diverse resource allocations in multiple sub-frames of the radio frame.
1. A method in a wireless communication scheduling entity, the method comprising:
allocating a first radio resource comprising at least one time-frequency resource block, the at least one time-frequency resource block of the first radio resource having a first size,
a duration of the at least one time-frequency resource block of the first radio resource corresponding to a duration of at least one sub-frame; and
allocating a second radio resource comprising at least one time-frequency resource block, the at least one time-frequency resource block of the second radio resource having a second size, the second size different than the first size,
a duration of the at least one time-frequency resource block of the second radio resource corresponding to at least the duration of the at least one sub-frame,
the at least one sub-frame constitutes part of a transmit time interval,
the first and second radio resources are allocated for use by at least one wireless communication terminal during the transmit time interval.
2. The method of claim 1 , the transmit time interval comprising a concatenated series of at least two sub-frames.
3. The method of claim 1 , allocating the first and second radio resources to a common wireless communication terminal.
4. The method of claim 1 , allocating the first and second radio resources to different wireless communication terminals.
5. The method of claim 1 , the transmit time interval is defined as a length of time over which a transport block is transmitted wherein the transport block comprises a block of jointly coded data.
6. The method of claim 5 , wherein the block of jointly coded data is protected by a common cyclic redundancy check.
7. The method of claim 1 , the transmit time interval corresponds to a transmission duration controlled by a single instance of control channel signaling.
8. The method of claim 1 ,
the transmit time interval comprising first and second concatenated sub-frames,
the duration of the at least one time-frequency resource block of the first radio resource corresponding to a duration of the first sub-frame,
the duration of the at least one time-frequency resource block of the second radio resource corresponding to a duration of both the first sub-frame and the second sub-frame.
9. The method of claim 1 , the at least one time-frequency resource block of the first radio resource having a frequency dimension that is different than a frequency dimension of the at least one time-frequency resource block of the second radio resource.
10. A method in a wireless communication terminal that communicates using orthogonal frequency-division multiplexing (OFDM), with a wireless base station, the method comprising:
receiving, from the base station, a radio resource allocation on a control channel in a radio frame,
wherein the radio frame comprises at least a first subframe and a second subframe subsequent to the first subframe, each subframe comprising a plurality of OFDM symbols,
the radio resource allocation allocating resources for one or more subframes,
the control channel including a plurality of resource allocation fields,
determining, at the wireless communication terminal, that the resource allocation is for either a resource block in both the first and second subframes or for a resource block in the second subframe only.
11. The method of claim 10 , determining at the wireless communication terminal, that the resource allocation is for a same resource block in both the first and second subframes.
12. A wireless communication scheduling entity comprising:
a transceiver coupled to a scheduler,
the scheduler configured to allocate a first radio resource comprising at least one time-frequency resource block having a first size, a duration of the at least one time-frequency resource block corresponding to a duration of at least one sub-frame; and
the scheduler configured to allocate a second radio resource comprising at least one time-frequency resource block having a second size, the second size different than the first size, a duration of the at least one time-frequency resource block of the second radio resource corresponding to at least the duration of the at least one sub-frame,
the at least one sub-frame constitutes part of a transmit time interval,
wherein the first and second radio resources are allocated for use by at least one wireless communication terminal during the transmit time interval.
13. The entity of claim 12 , the transmit time interval comprising a concatenated series of at least two sub-frames.
14. The entity of claim 12 , the scheduler configured to allocate the first and second radio resources to a common wireless communication terminal.
15. The entity of claim 12 , the scheduler configured to allocate the first and second radio resources to different wireless communication terminals.
16. The entity of claim 12 , the transmit time interval is defined as a length of time over which a transport block is transmitted wherein the transport block comprises a block of jointly coded data.
17. The entity of claim 16 , wherein the block of jointly coded data is protected by a common cyclic redundancy check.
18. The entity of claim 12 , the transmit time interval corresponds to a transmission duration controlled by a single instance of control channel signaling.
19. The entity of claim 12 ,
the transmit time interval comprising first and second concatenated sub-frames,
the duration of the at least one time-frequency resource block of the first radio resource corresponding to a duration of the first sub-frame,
the duration of the at least one time-frequency resource block of the second radio resource corresponding to a duration of both the first sub-frame and the second sub-frame.
20. The entity of claim 12 , the at least one time-frequency resource block of the first radio resource having a frequency dimension that is different than a frequency dimension of the at least one time-frequency resource block of the second radio resource.