Method and apparatus for data and control multiplexing

• US 9,094,969 B2
• Filed: 01/28/2013
• Issued: 07/28/2015
• Est. Priority Date: 09/05/2006
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Montojo, Juan, Malladi, Durga Prasad, Willenegger, Serge
• Primary Examiner(s): Roberts, Brian
• Application Number:
  US13/751,483
• Publication Number:
  US 20130136112A1
• Time in Patent Office: 911 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04L 1/06 using space diversity
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 27/2602 Signal structure
• CPC Class Codes: H04L 5/0017 in which a distinct code is applied, as a temporal sequence, to each frequency
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04W 72/044 based on the type of the allocated resource

Abstract

System(s) and method(s) are provided for transmitting data code symbols and control code symbols spanning disparate transmission time intervals in the uplink. Data and control symbols that overlap in time-domain within a transmission time interval are multiplexed and transmitted employing resources scheduled for data transmission, whereas data and control code symbols that are not multiplexed are transmitted in respective allocated resources. Multiplexing in conjunction with localized and distributed resource scheduling preserves the single-carrier characteristics of a single-carrier frequency division multiple access system.

Claims

1. A system utilized in wireless communications, comprising:

a processor configured to;

receive an allocation of resources to transmit data code symbols and control code symbols, wherein transmission of the control code symbols occurs in a primary transmission time interval (TTI) and transmission of the data code symbols occurs in a secondary TTI, wherein said primary TTI exceeds said secondary TTI;

determine whether the data code symbols and the control code symbols overlap within the secondary TTI;

upon determining that the data code symbols and the control code symbols overlap within the secondary TTI, multiplex the data code symbols and the control code symbols that overlap within the secondary TTI;

employ the resources allocated to transmit the data code symbols to convey the multiplexed data code symbols and control code symbols; and

employ the resources allocated to transmit the control code symbols, if the data code symbols and the control code symbols are not multiplexed; and

a memory coupled to the processor to store data.

2. The system of claim 1, the processor configured to transmit the data code symbols and the control code symbols in a single-carrier frequency division multiple access mode.

3. The system of claim 1, the processor further configured to multiplex the data code symbols and the control code symbols employing time-division multiplexing or frequency division multiplexing.

4. The system of claim 1, wherein a plurality of disparate secondary TTIs span the primary TTI.

5. The system of claim 4, wherein the data code symbols are transmitted in each secondary TTI within the primary TTI.

6. The system of claim 4, wherein the data code symbols are transmitted every other secondary TTI within the primary TTI.

7. An apparatus utilized in wireless communication systems, the apparatus comprising:

means for determining whether the data code symbols and the control code symbols overlap within a transmission time interval (TTI) for data transmission;

upon determining that the data code symbols and the control code symbols overlap within the TTI for data transmission, means for multiplexing the data code symbols and the control code symbols that overlap within the TTI for data transmission;

means for employing a set of allocated resources for data transmission to transmit the multiplexed data code symbols and control code symbols within the TTI for data transmission; and

means for employing a set of allocated control resources to transmit the control code symbols, if the data code symbols and the control code symbols are not multiplexed.

8. An apparatus that operates in a wireless communication environment, the apparatus comprising:

a processor configured to schedule resources for transmitting data code symbols and control code symbols, and to receive the data code symbols multiplexed with the control code symbols, wherein the transmitted multiplexed data code symbols and control code symbols utilize the resources scheduled to transmit the data code symbols, and wherein the data code symbols and the control code symbols are multiplexed based on a determination that the data control symbols and the control code symbols overlap within a time interval; and

a memory coupled to the processor to store data.

9. The apparatus of claim 8, the processor further configured to receive the control code symbols transmitted in the dedicated resources scheduled to control transmission, if it is determined that the data code symbols and the control code symbols are not multiplexed.

10. The apparatus of claim 8, the processor further configured to transmit data in a first transmission time interval, and receive the control code symbols in a second transmission time interval.

11. The apparatus of claim 10, the processor further configured to transmit the data code symbols in a plurality of transmission time intervals within a step of an N-step hybrid automated repeat request (HARQ), wherein N is natural number greater or equal than 1.

12. The apparatus of claim 8, the scheduled resources for transmitting the data code symbols and the control code symbols are frequency diverse, frequency localized, or a combination thereof.

13. An apparatus that facilitates communication in a wireless environment, the apparatus comprising:

means for determining that a received stream of code symbols is a stream of multiplexed data code symbols and control code symbols; and

means for demultiplexing the stream of multiplexed data code symbols and control code symbols, if it is determined that the data code symbols and the control code symbols are multiplexed, wherein the data code symbols and the control code symbols are multiplexed based on a determination that the data code symbols and the control code symbols overlap within a time interval.

14. The apparatus of claim 13, further comprising means for receiving control data code symbols transmitted in a dedicated resource allocation, if the data code symbols and the control code symbols are not multiplexed.

15. A method employed in a wireless communication system, the method comprising:

receiving scheduled resources for transmitting data code symbols and for transmitting control code symbols;

determining at a specific transmission time interval (TTI) whether the data code symbols and the control code symbols overlap within the specific TTI;

upon determining that the data code symbols and the control code symbols overlap within the specific TTI, multiplexing the data code symbols and the control code symbols, and transmitting the multiplexed data code symbols and control code symbols employing the scheduled resources for transmitting data code symbols; and

transmitting the control code symbols and the data code symbols on respective scheduled resources, if the data code symbols are not transmitted within the specific TTI.

16. The method of claim 15, the scheduled resources include a minimum transmission time interval consistent with a specification of the wireless communication system.

17. The method of claim 15, the specific TTI is a multiple of the minimum transmission time interval.

18. The method of claim 15, the data code symbols multiplexed with the control code symbols span a plurality of transmission time intervals (TTIs) that when added equal the control TTI.

19. The method of claim 18, further comprising inferring a plurality of data transmission time intervals that optimize transmission latency.

20. The method of claim 15, the multiplexing is an M-to-1 multiplexing of M-1 set of control code symbols and a set of data code symbols, wherein M is a natural number greater than or equal to 1.

21. The method of claim 15, the scheduled resources for transmitting the control code symbols and the data code symbols are frequency localized.

22. The method of claim 15, the scheduled resources for transmitting the control code symbols and the data code symbols are frequency distributed.

23. The method of claim 15, the scheduled resources for transmitting the control code symbols are frequency localized and the resources for transmitting the data code symbols are distributed.

24. The method of claim 15, the scheduled resources for transmitting the control code symbols are frequency distributed and the allocated resources for transmitting the data code symbols are frequency localized.

25. A non-transitory machine-readable medium comprising instructions which, when executed by a machine, cause the machine to perform operations including:

determining whether data code symbols and control code symbols overlap within a control transmission time interval (TTI);

multiplexing the data code symbols and the control code symbols, if the data code symbols are transmitted within the control TTI and if the data code symbols and the control code symbols overlap within the control TTI, and transmitting the multiplexed data code symbols and control code symbols employing a set of scheduled resources for data transmission; and

transmitting the control code symbols and the data code symbols on respective sets of scheduled resources, if the data code symbols are not transmitted in the control TTI.

26. A non-transitory machine-readable medium with instructions stored thereon that, when executed by a processor, cause the machine to carry out the following acts:

transmitting a first set of data code symbols in a first transmission time interval (TTI);

receiving control code symbols in a second TTI that encompasses the first TTI; and

receiving control code symbols multiplexed with data code symbols from a second set of data code symbols, if the data code symbols in the second set are transmitted within a control TTI and if the data code symbols from the second set of data code symbols overlap with the control code symbols within the control TTI, wherein control code symbols are multiplexed with data code symbols based on a determination that the data code symbols from the second set of data code symbols overlap with the control code symbols within the control TTI.

27. The non-transitory machine-readable medium of claim 26, further storing instructions that, when executed by a processor, perform the act of allocating a set of resources, wherein the resources are frequency diverse or frequency selective.

28. A method employed in a wireless communication environment, the method comprising:

scheduling an allocation of resources for transmitting data code symbols and for transmitting control code symbols;

receiving a stream of code symbols and determining that the data code symbols and the control code symbols are multiplexed in the resources allocated to transmit data code symbols , wherein the data code symbols and the control code symbols are multiplexed based on a determination that the data code symbols and the control code symbols overlap within a time interval; and

de-multiplexing the multiplexed data code symbols and the control code symbols in the allocated resources for data transmission.