System and method for resource block-specific control signaling
A system and method is disclosed for resource block-specific control signaling in a communication system. Communication data is transmitted using a transmission channel comprising a plurality of resource blocks defined by allocating time-frequency slots in a transmission resource. Resource block control information is transmitted in a “feed-forward” manner to a user end (UE) or group of UEs using channels physically mapped into scheduled resource blocks (RBs) for that user or group of users. Embodiments of the invention provide an RB-specific control channel that comprises RB control elements that are embedded within scheduled resource blocks. The invention, therefore, reduces the amount of control information that must be transmitted by common or shared control channels.
1. An apparatus comprising:
an interface to a wireless receiver;
one or more processor elements, coupled to the interface, the one or more processor elements configured to:
receive, via the interface, data that has been transmitted using a plurality of resource blocks within a predetermined frequency band, at least one of the plurality of resource blocks having a corresponding resource block control element embedded therein, each embedded resource block control element comprising control information for at least the resource block in which the resource block control element is embedded, wherein each embedded resource block control element is also usable by a user equipment separate from the apparatus; and
receive, via the interface, at least one control channel element specifically corresponding to the apparatus, wherein the at least one control channel element comprises one or more resource block allocation identifiers associated with one or more resource blocks of the plurality of resource blocks.
2. The apparatus of claim 1 , wherein the one or more associated resource block allocation identifiers designate the plurality of resource blocks.
3. The apparatus of claim 1 , wherein the one or more processor elements are further configured to:
extract an embedded resource block control element from at least one of the plurality of resource blocks in which the resource block control element is embedded;
process the embedded resource block control element; and
use the embedded resource block control element to process data in at least one of the plurality of resource blocks in which the resource block control element is embedded.
4. The apparatus of claim 1 , wherein an embedded resource block control element in a first resource block further comprises control information for multiple other resource blocks.
5. The apparatus of claim 4 , wherein the first resource block and the multiple other resource blocks are located in a single time interval.
6. The apparatus of claim 1 , wherein the one or more processor elements coupled to a wireless interface are further configured to utilize orthogonal frequency division multiplexing (OFDM).
7. The apparatus of claim 6 , wherein the plurality of resource blocks represents time-frequency resources, each resource block of the plurality of resource blocks comprising a plurality of subcarriers and a plurality of OFDM symbols.
8. A user equipment, comprising:
an antenna;
a radio coupled to the antenna;
a processor coupled to the radio;
wherein the user equipment is configured to:
receive data that has been transmitted using a plurality of resource blocks within a predetermined frequency band, at least one of the plurality of resource blocks having a corresponding resource block control element embedded therein, each embedded resource block control element comprising control information for at least the resource block in which the resource block control element is embedded, wherein each embedded resource block control element is also usable by another user equipment; and
receive at least one control channel element specifically corresponding to the user equipment, wherein the at least one control channel element comprises one or more resource block allocation identifiers associated with one or more resource blocks of the plurality of resource blocks.
9. The user equipment of claim 8 , wherein the one or more associated resource block allocation identifiers designate the plurality of resource blocks.
10. The user equipment of claim 8 , wherein the user equipment is configured to:
extract an embedded resource block control element from at least one of the plurality of resource blocks in which the resource block control element is embedded;
process the embedded resource block control element; and
use the embedded resource block control element to process data in at least one of the plurality of resource blocks in which the resource block control element is embedded.
11. The user equipment of claim 8 , wherein an embedded resource block control element in a first resource block further comprises control information for multiple other resource blocks.
12. The user equipment of claim 11 , wherein the first resource block and the multiple other resource blocks are located in a single time interval.
13. The user equipment of claim 8 , wherein the user equipment is further configured to utilize orthogonal frequency division multiplexing (OFDM).
14. The user equipment of claim 13 , wherein the plurality of resource blocks represents time-frequency resources, each resource block of the plurality of resource blocks comprising a plurality of subcarriers and a plurality of OFDM symbols.
15. A non-transitory computer readable memory medium having one or more software modules stored thereon, the one or more software modules being executable by one or more processors of a wireless communication apparatus, wherein the one or more software modules, when executed, cause the wireless communication apparatus to:
receive data that has been transmitted using a plurality of resource blocks within a predetermined frequency band, at least one of the plurality of resource blocks having a corresponding resource block control element embedded therein, each embedded resource block control element comprising control information for at least the resource block in which the resource block control element is embedded, wherein each embedded resource block control element is also usable by a user equipment separate from the wireless communication apparatus; and
receive at least one control channel element specifically corresponding to the wireless communication apparatus, wherein the at least one control channel element comprises one or more resource block allocation identifiers associated with one or more resource blocks of the plurality of resource blocks.
16. The non-transitory computer readable memory medium of claim 15 , wherein the one or more associated resource block allocation identifiers designate the plurality of resource blocks.
17. The non-transitory computer readable memory medium of claim 15 , wherein the one or more software modules, when executed, further cause the wireless communication apparatus to:
extract an embedded resource block control element from at least one of the plurality of resource blocks in which the resource block control element is embedded;
process the embedded resource block control element; and
use the embedded resource block control element to process data in at least one of the plurality of resource blocks in which the resource block control element is embedded.
18. The non-transitory computer readable memory medium of claim 15 , wherein an embedded resource block control element in a first resource block further comprises control information for multiple other resource blocks.
19. The non-transitory computer readable memory medium of claim 18 , wherein the first resource block and the multiple other resource blocks are located in a single time interval.
20. The non-transitory computer readable memory medium of claim 15 , wherein the one or more software modules, when executed, further cause the wireless communication apparatus to utilize orthogonal frequency division multiplexing (OFDM), and wherein the plurality of resource blocks represents time-frequency resources, each resource block of the plurality of resource blocks comprising a plurality of subcarriers and a plurality of OFDM symbols.