Multiplexing large payloads of control information from user equipments

• US 8,611,238 B2
• Filed: 04/30/2010
• Issued: 12/17/2013
• Est. Priority Date: 04/30/2009
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Papasakellariou, Aris, Kim, Young-Bum, Cho, Joon-Young
• Primary Examiner(s): Rinehart, Mark
• Assistant Examiner(s): Crompton, Christopher R
• Application Number:
  US12/771,113
• Publication Number:
  US 20100278109A1
• Time in Patent Office: 1,327 Days
• Field of Search: 370/252
• US Class Current: 370/252
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365

Abstract

Disclosed is multiplexing transmissions of Uplink Control Information (UCI) signals having variable payloads from User Equipments (UEs). The UCI transmission uses a first format type if its size is less than or equal to a predetermined values and it uses a second format type if its size is greater than a predetermined value. When the first format type is used the UE multiplexing is through a first method while when the second format type is used the UE multiplexing is through a second method which is different than the first method. The structure of the second format type is the same as the structure used for the transmission of data information by UEs. The UEs can also be grouped and UCI transmission can be triggered through the reception of control signaling addressing a group of UEs and indicating UCI transmission by a sub-group of UEs in the group of UEs.

Claims

1. A method for transmitting Uplink Control Information (UCI) from a User Equipment (UE) to a NodeB over a Physical Uplink Control CHannel (PUCCH) during a Transmission Time Interval (TTI) including S slots in a communication system, the method comprising the steps of:

transmitting the UCI using a first PUCCH format, if a number of UCI bits is less than or equal to a predetermined value; and

transmitting the UCI using a second PUCCH format, if the number of UCI bits is greater than the predetermined value,

wherein an s-th slot in the PUCCH includes N_s1 symbols and the UCI is transmitted over N_s2 symbols, with N_s2 being smaller than N_s1, and

wherein the UE is assigned, by the NodeB, K frequency Resource Elements (REs) and a first sequence with a length L, where K is an integer multiple Q of L, and the UE transmits Q UCI symbols in each of N_s2 symbols, after multiplying each of the Q UCI symbols by the first sequence of the length L to obtain Q sequences of the length L forming a sequence of length K, mapping the sequence of a length K to the K REs, and applying an inverse Fourier transform.

2. The method of claim 1, wherein K is twelve and L is one, two, or three, or four.

3. The method of claim 1, wherein the first sequence is different in at least two of the N_s2 symbols.

4. The method of claim 1, wherein S is two and the UE transmits Channel State Information (CSI) in the second slot using respective REs and a sequence derived from respective REs the UE uses to transmit CSI in the first slot.

5. The method of claim 1, wherein the UE is assigned a second sequence with a length K and transmits in each remaining N_s1-N_s2 symbols of the first slot and in the K REs the second sequence, after applying the inverse Fourier transform.

6. The method of claim 5, wherein the first sequence of the second sequence is a constant amplitude zero autocorrelation sequence.

7. A User Equipment (UE) apparatus for transmitting Uplink Control Information (UCI) over a Physical Uplink Control CHannel (PUCCH) during a Transmission Time Interval (TTI) including S slots in a communication system, the UE apparatus comprising:

a transmitter for transmitting the UCI to a NodeB; and

a controller for controlling operations of transmitting the UCI using a first PUCCH format, if a number of UCI bits is less than or equal to a predetermined value, and transmitting the UCI using a second PUCCH format, if the number of UCI bits is greater than the predetermined value,

wherein an s-th slot in the PUCCH includes N_o symbols and the UCI is transmitted over N_s2 symbols, with N_s2 being smaller than N_s1, and

wherein the UE is assigned, by the NodeB, K frequency Resource Elements (REs) and a first sequence with a length L, where K is an integer multiple Q of L, and the UE transmits Q UCI symbols in each of N_s2 symbols, after multiplying each of the Q UCI symbols by the first sequence of the length L to obtain Q sequences of the length L forming a sequence of length K, mapping the sequence of a length K to the K REs, and applying an inverse Fourier transform.

8. The UE apparatus of claim 7, wherein K is twelve and L is one, two, or three, or four.

9. The UE apparatus of claim 7, wherein the first sequence is different in at least two of the N_s2 symbols.

10. The UE apparatus of claim 7, wherein S is two and the apparatus transmits Channel State Information (CSI) in the second slot using respective REs and a sequence derived from the respective REs the apparatus uses to transmit CSI in the first slot.

11. The UE apparatus of claim 7, further comprising:

a transmitter for transmitting a received second sequence with a length K in each remaining N_s1-N_s2 symbols of the first slot and in the K REs including; and

an inverse Fourier transform unit for applying the inverse Fourier transform.

12. The UE apparatus of claim 11, wherein the first sequence or the second sequence is a constant amplitude zero autocorrelation sequence.