System and method for data channel transmission and reception

Patent metadata

Field	Value
Publication number	US-11683788-B2
Application number	US-201715438009-A
Country	US
Kind code	B2
Filing date	Feb 21, 2017
Priority date	Oct 13, 2011
Publication date	Jun 20, 2023
Grant date	Jun 20, 2023

Abstract

A method includes allocating, by a communications controller, a first set of resource blocks to an enhanced physical downlink shared channel (ePDSCH), where the ePDSCH has a first starting point and allocating, by the communications controller, a second set of resource blocks to an enhanced physical downlink control channel (ePDCCH). The method also includes identifying, by the communications controller, a second starting point for the ePDSCH, where the second starting point for the ePDSCH is located within a legacy control region, where the first starting point of the ePDCCH is located within the legacy control region, and where the second starting point of the ePDSCH is different than the first starting point of the ePDCCH. Additionally, the method includes signaling, by the communications controller to a user equipment (UE) the second starting point and a number of the second set of resource blocks allocated to the ePDSCH.

First claim

What is claimed is:

1. A method comprising:
receiving, by a user equipment (UE), a sub-frame carrying a physical downlink control channel (PDCCH), an enhanced physical downlink control channel (ePDCCH), and an enhanced physical shared channel (ePDSCH), the ePDCCH carrying resource allocation information for the ePDSCH, the ePDCCH spanning different frequency resources than the ePDSCH, a first frequency range spanning between a lowest frequency and a highest frequency of frequency resources of the ePDSCH, a second frequency range spanning between a lowest frequency and a highest frequency of frequency resources of the PDCCH, the second frequency range enclosing the first frequency range such that the lowest frequency of the ePDSCH is no lower than the lowest frequency of the PDCCH and such that the highest frequency of the ePDSCH is no higher than the highest frequency of the PDCCH, wherein at least some symbols of the ePDCCH overlap with at least some symbols of the ePDSCH in a time domain such that the at least some symbols of the ePDCCH span the same time domain resources as the at least some symbols of the ePDSCH, and wherein a starting symbol location of the ePDCCH is different than a starting symbol location of the ePDSCH;
receiving, by the UE, an indicator or a parameter from a communications controller; and
determining, by the UE, the starting symbol location of the ePDSCH in accordance with the indicator or the parameter.

2. The method of claim 1 , wherein the indicator or the parameter includes a physical control format indicator.

3. The method of claim 1 , wherein the indicator or the parameter includes a radio resource control parameter received via a radio resource control (RRC) message.

4. The method of claim 1 , further comprising searching for the indicator or the parameter in a common search space of a control channel.

5. The method of claim 1 , wherein the indicator or the parameter is received via a grant for the ePDSCH.

6. The method of claim 1 , further comprising decoding the ePDSCH in accordance with the starting symbol location of the ePDSCH and a number of resource blocks allocated to the ePDSCH.

7. The method of claim 1 , wherein the ePDSCH is scheduled by the ePDCCH.

8. The method of claim 1 , wherein the ePDCCH and the ePDSCH are code-domain multiplexed, wherein the highest frequency of the PDCCH is above a highest frequency of all the ePDCCH carried in the sub-frame, and wherein the ePDSCH and the PDCCH at least partially overlap in the time domain.

9. A user equipment (UE) comprising:
at least one processor; and
a non-transitory computer readable storage medium storing programming for execution by the at least one processor, the programming including instructions to cause the UE to:
receive a sub-frame carrying a physical downlink control channel (PDCCH), an enhanced physical downlink control channel (ePDCCH), and an enhanced physical shared channel (ePDSCH), the ePDCCH carrying resource allocation information for the ePDSCH, the ePDCCH spanning different frequency resources than the ePDSCH, a first frequency range spanning between a lowest frequency and a highest frequency of frequency resources of the ePDSCH, a second frequency range spanning between a lowest frequency and a highest frequency of frequency resources of the PDCCH, the second frequency range enclosing the first frequency range such that the lowest frequency of the ePDSCH is no lower than the lowest frequency of the PDCCH and such that the highest frequency of the ePDSCH is no higher than the highest frequency of the PDCCH, wherein at least some symbols of the ePDCCH overlap with at least some symbols of the ePDSCH in a time domain such that the at least some symbols of the ePDCCH span the same time domain resources as the at least some symbols of the ePDSCH, and wherein a starting symbol location of the ePDCCH is different than a starting symbol location of the ePDSCH;
receive an indicator or a parameter from a communications controller; and
determine the starting symbol location of the ePDSCH in accordance with the indicator or the parameter.

10. The UE of claim 9 , wherein the indicator or the parameter includes a physical control format indicator.

11. The UE of claim 9 , wherein the indicator or the parameter includes a radio resource control parameter received via a radio resource control (RRC) message.

12. The UE of claim 9 , wherein the programming further includes instructions to search for the indicator or the parameter in a common search space of a control channel.

13. The UE of claim 9 , wherein the indicator or the parameter is received via a grant for the ePDSCH.

14. The UE of claim 9 , wherein the programming further includes instructions to decode the ePDSCH in accordance with the starting symbol location of the ePDSCH and a number of resource blocks allocated to the ePDSCH.

15. The UE of claim 9 , wherein the ePDSCH is scheduled by the ePDCCH.

16. A method comprising:
transmitting, by a communications controller, a sub-frame carrying a physical downlink control channel (PDCCH), an enhanced physical downlink control channel (ePDCCH), and an enhanced physical shared channel (ePDSCH) to a user equipment (UE), the ePDCCH carrying resource allocation information for the ePDSCH, the ePDCCH spanning different frequency resources than the ePDSCH, a first frequency range spanning between a lowest frequency and a highest frequency of frequency resources of the ePDSCH, a second frequency range spanning between a lowest frequency and a highest frequency of frequency resources of the PDCCH, the second frequency range enclosing the first frequency range such that the lowest frequency of the ePDSCH is no lower than the lowest frequency of the PDCCH and such that the highest frequency of the ePDSCH is no higher than the highest frequency of the PDCCH, wherein at least some symbols of the ePDCCH overlap with at least some symbols of the ePDSCH in a time domain, and wherein a starting symbol location of the ePDCCH is different than a starting symbol location of the ePDSCH; and
transmitting, by the communications controller, an indicator or a parameter to the UE, the indicator or the parameter including information for locating the starting symbol location of the ePDSCH.

17. The method of claim 16 , wherein the indicator or the parameter includes a physical control format indicator.

18. The method of claim 16 , wherein the indicator or the parameter includes a radio resource control parameter received via a radio resource control (RRC) message.

19. A communications controller comprising:
at least one processor; and
a non-transitory computer readable storage medium storing programming for execution by the at least one processor, the programming including instructions to cause the communications controller to:
transmit a sub-frame carrying a physical downlink control channel (PDCCH), an enhanced physical downlink control channel (ePDCCH), and an enhanced physical shared channel (ePDSCH) to a user equipment (UE), the ePDCCH carrying resource allocation information for the ePDSCH, the ePDCCH spanning different frequency resources than the ePDSCH, a first frequency range spanning between a lowest frequency and a highest frequency of frequency resources of the ePDSCH, a second frequency range spanning between a lowest frequency and a highest frequency of frequency resources of the PDCCH, the second frequency range enclosing the first frequency range such that the lowest frequency of the ePDSCH is no lower than the lowest frequency of the PDCCH and such th

Assignees

• Futurewei Technologies Inc

Inventors

• Sartori Philippe
• Soong Anthony C K
• Berggren Fredrik

Classifications

• H04L5/003

  Arrangements for allocating sub-channels of the transmission path · CPC title

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W72/044 Primary

  based on the type of the allocated resource · CPC title

• H04L5/0044 Primary

  Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH · CPC title

• H04L5/0094

  Indication of how sub-channels of the path are allocated · CPC title