Method for UL data transmission in wireless communication system

• US 9,271,276 B2
• Filed: 09/20/2012
• Issued: 02/23/2016
• Est. Priority Date: 09/20/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Original Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Inventors: He, Hong, Li, Yingyang, Sun, Chengjun
• Primary Examiner(s): HO, DUC CHI
• Application Number:
  US14/346,273
• Publication Number:
  US 20140376468A1
• Time in Patent Office: 1,251 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04B 1/713 using frequency hopping
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0012 Hopping in multicarrier systems for frequency hopping in spread spectrum systems H04B1/713
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management

Abstract

The present invention provides a UL data transmission method in a wireless communication system, including determining, by the UE, UL virtual resources allocated to the UE by the eNB according to Downlink Control Information (DCI) used for scheduling UL physical resources sent from the eNB to the UE; determining, by the UE, the UL physical resources used for transmitting the UL data after frequency hopping processing in a preset frequency domain when determining that the UL data needs to be processed with frequency hopping processing according to the DCI, if the UL virtual resources allocated to the UE locate at UL sub-frames in a non-aggregation K of any wireless frame, and locate at the preset frequency domain; bearing, by the UE, the UL data and feeding the UL data back to the eNB utilizing the determined UL physical resources which are processed with the frequency hopping processing and used for transmitting the UL data. With the present invention, the PUSCH channel resource collision may be avoided, the frequency diversity gain may be maximized, and the PUSCH performances may be enhanced.

Claims

1. A method for uplink (UL) data transmission in a wireless communication system, the method comprising:

determining, by a User Equipment (UE), UL virtual resources allocated to the UE by an Evolved Node B (eNB) according to Downlink Control Information (DCI) used for scheduling UL physical resources sent from the eNB to the UE, wherein at least two Component Carriers (CC)s having different frame structure configurations are present in CCs configured for the UE;

determining, by the UE, the UL physical resources used for transmitting UL data after frequency hopping processing in a preset frequency domain when determining that the UL data is to be processed with frequency hopping processing according to the DCI, if the UL virtual resources allocated to the UE are located at UL sub-frames in a non-aggregation K of any wireless frame and located at the preset frequency domain;

transmitting, by the UE, the UL data to the eNB utilizing the determined UL physical resources which are processed with the frequency hopping processing and used for transmitting the UL data;

wherein an aggregation K is an aggregation of UL sub-frames which are determined according to configured and different CC frame structure configurations and used for feeding back Acknowledgment/Negative Acknowledgement (ACK/NACK) information, and wherein the preset frequency domain is an overlapping area of a Physical Uplink Control Channel (PUCCH) area of UL sub-frames in the aggregation K and a Physical Uplink Shared Channel (PUSCH) area of sub-frames in the non-aggregation K.

2. The method of claim 1, wherein determining whether the UL virtual resources allocated to the UE are located at the preset frequency domain comprises:

determining whether a UL virtual resource block m allocated to the UE satisfies a condition

3. The method of claim 1, wherein determining, by the UE, the UL physical resources used for transmitting the UL data after the frequency hopping processing in the preset frequency domain comprises:

determining n_PRB^s2(i)=N_RB^UL−

1−

n_PRB^s1(i),

wherein n_PRB^s2(i) is a position of a UL physical resource which is used for transmitting the UL data after the frequency hopping processing, n_PRB^s1(i) is a position of a UL virtual resource allocated to the UE, N_RB^UL is a total number of RBs in the UL system bandwidth, and i is a number of the UL virtual resources allocated to the UE.

4. A User Equipment (UE) for transmitting uplink (UL) data in a wireless communication system, the UE comprising:

control circuitry configured to;

determine, by a UE, UL virtual resources allocated to the UE by an Evolved Node B (eNB) according to Downlink Control Information (DCI) used for scheduling UL physical resources sent from the eNB to the UE, wherein at least two Component Carriers (CC)s having different frame structure configurations are present in CCs configured for the UE, and

determine the UL physical resources used for transmitting UL data after frequency hopping processing in a preset frequency domain when determining that the UL data is to be processed with frequency hopping processing according to the DCI, if the UL virtual resources allocated to the UE are located at UL sub-frames in a non-aggregation K of any wireless frame and located at the preset frequency domain; and

a transmitter configured to transmit the UL data to the eNB utilizing the determined UL physical resources which are processed with the frequency hopping processing and used for transmitting the UL data,

wherein an aggregation K is an aggregation of UL sub-frames which are determined according to configured and different CC frame structure configurations and used for feeding back Acknowledgment/Negative Acknowledgement (ACK/NACK) information, and wherein the preset frequency domain is an overlapping area of a Physical Uplink Control Channel (PUCCH) area of UL sub-frames in the aggregation K and a Physical Uplink Shared Channel (PUSCH) area of sub-frames in the non-aggregation K.

5. The UE of claim 4, wherein the control circuitry is configured to:

determine whether a UL virtual resource block m allocated to the UE satisfies a condition

6. The UE of claim 4, wherein the control circuitry is configured to determine the UL physical resources used for transmitting the UL data after the frequency hopping processing in the preset frequency domain using:

n_PRB^s2(i)=N_RB^UL−

1−

n_PRB^s1(i),

wherein n_PRB^s2(i) is a position of a UL physical resource which is used for transmitting the UL data after the frequency hopping processing, n_PRB^s1(i) is a position of a UL virtual resource allocated to the UE, N_RB^UL is a total number of RBs in the UL system bandwidth, and i is a number of the UL virtual resources allocated to the UE.

7. The wireless communication system of claim 4, wherein the UE is configured to:

determine whether a UL virtual resource block m allocated to the UE satisfies a condition

8. The wireless communication system of claim 4, wherein the UE is configured to determine the UL physical resources used for transmitting the UL data after the frequency hopping processing in the preset frequency domain using:

n_PRB^s2(i)=N_RB^UL−

1−

n_PRB^s1(i),

wherein n_PRB^s2(i) is a position of a UL physical resource which is used for transmitting the UL data after the frequency hopping processing, n_PRB^s1(i) is a position of a UL virtual resource allocated to the UE, N_RB^UL is a total number of RBs in the UL system bandwidth, and i is a number of the UL virtual resources allocated to the UE.

9. A wireless communication system, comprising:

an Evolved Node B (eNB); and

a User Equipment (UE) configured to;

determine, by a UE, UL virtual resources allocated to the UE by the eNB according to Downlink Control Information (DCI) used for scheduling UL physical resources sent from the eNB to the UE, wherein at least two Component Carriers (CC)s having different frame structure configurations are present in CCs configured for the UE, and

determine the UL physical resources used for transmitting UL data after frequency hopping processing in a preset frequency domain when determining that the UL data is to be processed with frequency hopping processing according to the DCI, if the UL virtual resources allocated to the UE are located at UL sub-frames in a non-aggregation K of any wireless frame and located at the preset frequency domain; and

transmit the UL data to the eNB utilizing the determined UL physical resources which are processed with the frequency hopping processing and used for transmitting the UL data,

wherein an aggregation K is an aggregation of UL sub-frames which are determined according to configured and different CC frame structure configurations and used for feeding back Acknowledgment/Negative Acknowledgement (ACK/NACK) information, and wherein the preset frequency domain is an overlapping area of a Physical Uplink Control Channel (PUCCH) area of UL sub-frames in the aggregation K and a Physical Uplink Shared Channel (PUSCH) area of sub-frames in the non-aggregation K.