METHOD AND APPARATUS FOR CHANNEL ESTIMATION AND DATA DECODING IN WIRELESS COMMUNICATION SYSTEM

• US 20180145809A1
• Filed: 11/22/2017
• Published: 05/24/2018
• Est. Priority Date: 11/22/2016
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KWAK, Youngwoo, KIM, Younsun, NOH, Hoondong, SHIN, Cheolkyu
• Granted Patent: US 10,721,038 B2
• Time in Patent Office: Days
• CPC Class Codes: H04B 7/0417 Feedback systems
• CPC Class Codes: H04L 25/0222 Estimation of channel variability, e.g. coherence bandwidth, coherence time, fading frequency
• CPC Class Codes: H04L 25/0228 with direct estimation from sounding signals
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 72/044 based on the type of the allocated resource
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A communication method and system that combine the internet of things (IoT) technology with fifth generation (5G) communication systems supporting a higher data rate after fourth generation (4G) systems are provided. The present disclosure may be applied to intelligent services, such as smart homes, smart buildings, smart cities, smart or connected cars, healthcare, digital education, retail businesses, and security and safety related services on the basis of 5G communication technologies and IoT related technologies. A method of a terminal in a wireless communication system to improve DMRS channel estimation performance is provided. The method includes receiving first information configuring a physical resource block (PRB) bundling size indication based on second information, receiving the second information indicating the number of at least one PRB, if the PRB bundling size indication is configured, and estimating the channel state based on an assumption that the same precoding is applied to the at least one PRB based on the second information.

Claims

1. A method of a terminal in a wireless communication system, the method comprising:

receiving first information configuring physical resource block (PRB) bundling size indication based on second information;

receiving the second information indicating a number of at least one PRB, if the PRB bundling size indication is configured; and

estimating a channel state based on an assumption that a same precoding is applied to the at least one PRB based on the second information.

2. The method of claim 1, further comprising:

receiving demodulation reference signals (DMRSs) and data,

wherein the DMRSs are used to estimate the channel state.

3. The method of claim 1, further comprising:

receiving third information scheduling data transmitted in at least two slots,

wherein the channel state is estimated based on an assumption that a same precoding is applied to the at least two slots.

4. The method of claim 1, wherein the second information indicates that the number of at least one PRB is an integer or a number of allocated PRBs to the terminal.

5. A method of a base station (BS) in a wireless communication system, the method comprising:

transmitting first information configuring physical resource block (PRB) bundling size indication based on second information; and

transmitting the second information indicating a number of at least one PRB, if the PRB bundling size indication is configured,

wherein a channel state is estimated based on an assumption that a same precoding is applied to the at least one PRB based on the second information.

6. The method of claim 5, further comprising:

transmitting demodulation reference signals (DMRSs) and data,

wherein the DMRSs are used to estimate the channel state.

7. The method of claim 5, further comprising:

transmitting third information scheduling data transmitted in at least two slots,

wherein the channel state is estimated based on an assumption that a same precoding is applied to the at least two slots.

8. The method of claim 5, wherein the second information indicates that the number of at least one PRB is an integer or a number of allocated PRBs to a terminal.

9. A terminal in a wireless communication system, the terminal comprising:

a transceiver; and

a controller coupled with the transceiver and configured to;

receive first information configuring physical resource block (PRB) bundling size indication based on second information,

receive the second information indicating a number of at least one PRB, if the PRB bundling size indication is configured, and

estimate a channel state based on an assumption that a same precoding is applied to the at least one PRB based on the second information.

10. The terminal of claim 9,

wherein the controller is further configured to receive demodulation reference signals (DMRSs) and data, and

wherein the DMRSs are used to estimate the channel state.

11. The terminal of claim 9,

wherein the controller is further configured to receive third information scheduling data transmitted in at least two slots, and

wherein the channel state is estimated based on an assumption that a same precoding is applied to the at least two slots.

12. The terminal of claim 9, wherein the second information indicates that the number of at least one PRB is an integer or a number of allocated PRBs to the terminal.

13. A base station (BS) in a wireless communication system, the BS comprising:

a transceiver; and

a controller coupled with the transceiver and configured to;

transmit first information configuring physical resource block (PRB) bundling size indication based on second information, and

transmit the second information indicating a number of at least one PRB, if the PRB bundling size indication is configured,

wherein a channel state is estimated based on an assumption that a same precoding is applied to the at least one PRB based on the second information.

14. The BS of claim 13,

wherein the controller is further configured to transmit demodulation reference signals (DMRSs) and data, and

wherein the DMRSs are used to estimate the channel state.

15. The BS of claim 13,

wherein the controller is further configured to transmit third information scheduling data transmitted in at least two slots, and

wherein the channel state is estimated based on an assumption that a same precoding is applied to the at least two slots.

16. The BS of claim 13, wherein the second information indicates that the number of at least one PRB is an integer or a number of allocated PRBs to a terminal.