METHOD AND APPARATUS FOR DATA AND CONTROL MULTIPLEXING

• US 20080095110A1
• Filed: 08/29/2007
• Published: 04/24/2008
• Est. Priority Date: 09/05/2006
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Montojo, Juan, Willenegger, Serge, Malladi, Durga
• Granted Patent: US 8,363,606 B2
• Time in Patent Office: Days
• US Class Current: 370/330
• 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 and control symbols, wherein transmission of control symbols occurs in a primary transmission time interval(TTI) and transmission of data symbols occurs in a secondary TTI, said primary TTI exceeds said secondary TTI;

to multiplex data and control symbols that are transmitted within a common time period, and to employ allocated resources for data transmission to convey the multiplexed symbols; and

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

a memory coupled to the processor to store data.

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

3. The system of claim 1, the processor further configured to multiplex data and control code symbols employing time-division multiplexing in 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, data code symbols are transmitted in each secondary TTI within the primary TTI.

6. The system of claim 4, 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 employing a set of allocated resources for data transmission to transmit multiplexed data and control symbols conveyed within a transmission time interval; and

means for employing a set of allocated control resources to transmit control symbols, if the data and control 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 data symbols multiplexed with control symbols, wherein the transmitted multiplexed code symbols utilize the resources scheduled to a data transmission; and

A memory coupled to the processor to store data.

9. The apparatus of claim 8, the processor further configured to receive control code symbols transmitted in the dedicated resources scheduled to control transmission, if determined data and control 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 control code symbols in a second transmission time interval.

11. The apparatus of claim 10, the processor further configured to transmit 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 allocated resources for transmitting a data code symbols and 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 a received stream of code symbols is a stream of multiplexed data code symbols, and control code symbols; and

means for demultiplexing a the stream of data, code symbols and control code symbols, if determined the symbols are multiplexed.

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

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

receiving scheduled resources for transmitting data and control code symbols;

determining at specific time intervals whether data and control code symbols are transmitted;

multiplexing the data and the control code symbols, if determined that the data and the control code symbols are transmitted within the specific time interval; and

transmitting the multiplexed code symbols employing the allocated resources for data transmission; and

transmitting the control and the data code symbols on respective allocated resources, if the data symbols are not transmitted within the specific time 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 claim of method 15, the specific time interval is a multiple of the minimum transmission time interval.

18. The method of claim 15, the data, code symbols multiplexed with the control 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 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 control code symbols and data-code symbols are frequency localized.

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

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

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

25. An electronic device configured to execute the method of claim 15.

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

multiplexing data and control code symbols, if the data symbols are transmitted within a control transmission time interval (MTI), and transmitting the multiplexed code symbols employing a set of scheduled resources for data transmission; and

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

27. A 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 that the first TTI; and

receiving control code symbols multiplexed with data code symbols from a second set of data symbols, if the data code symbols in the second set are transmitted within the control TTI.

28. The machine-readable medium of claim 27, 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 frequently selective.

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

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

receiving a stream of code symbols and determining that data code symbols and control code symbols are multiplexed in the resources allocated to data transmission; and

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

30. An electronic device that executes the method of claim 29.