# US 10,313,158 B2 · Method for data transmission and reception of random access procedure

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- Number: US 10,313,158 B2
- Document ID: US10313158B2
- Status: Granted
- Kind: B2
- Application number: 15/861,687
- Filed: 2018-01-04
- Published: 2018-07-12
- Granted: 2019-06-04
- Earliest claimed: 2017-01-09
- Assignees: Mediatek Inc.
- Applicants: Mediatek Inc.
- Inventors: Guo-Hau Gau; Chiou-Wei Tsai
- Web page: https://patentgrep.com/patent/US10313158B2

## CPC

- H04L 25/0202: {Channel estimation}
- H04L 5/00: Arrangements affording multiple use of the transmission path
- H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT}
- H04L 25/02: Details {; arrangements for supplying electrical power along data transmission lines (systems for transmitting signals via power distribution lines H04B3/54)}
- H04L 25/0224: {using sounding signals}
- H04W 56/00: Synchronisation arrangements
- H04W 56/0015: {one node acting as a reference for the others}
- H04W 56/005: {compensating for timing error by adjustment in the receiver}
- H04J 13/0003: {Code application, i.e. aspects relating to how codes are applied to form multiplexed channels}
- H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S)

## Abstract

A method for data reception of a random access procedure for a network of a wireless communication system is disclosed. The method comprises receiving a preamble and data of the random access procedure in one message, from a user equipment (UE) of the wireless communication system, obtaining timing advance information according to the received preamble, and performing channel estimation according to a DMRS allocated for demodulation of the received data with a timing advance compensation, wherein the timing advance compensation is an operation of a linear phase rotation in a frequency domain based on the timing advance information.

## Claims

### Claim 1

A method for data reception of a random access procedure for a network of a wireless communication system, the method comprising:
receiving a preamble and data of the random access procedure in one message, from a user equipment (UE) of the wireless communication system;
obtaining timing advance information according to the received preamble; and
performing channel estimation according to a DMRS allocated for demodulation of the received data with a timing advance compensation, wherein the timing advance compensation is an operation of a linear phase rotation in a frequency domain based on the timing advance information.

### Claim 2 (depends on 1)

The method of claim 1, wherein performing channel estimation according to a DMRS allocated for demodulation of the received data with the timing advance compensation comprises:
obtaining an estimated channel by the DMRS; and
estimating channels carrying the data based on the estimated channel with the timing advance compensation operation.

### Claim 3 (depends on 1)

The method of claim 1, further comprises:
configuring DMRS sequences allocated in a resource with a code-division multiplexing (CDM) manner in at least a time resource and a frequency resource.

### Claim 4 (depends on 1)

The method of claim 1, wherein receiving the preamble and data of the random access procedure, from the UE of the wireless communication system comprises:
receiving data with the same numerology and format as a physical random access channel (PRACH), wherein cyclic prefix (CP) of the data is the same as that of the preamble, and a subcarrier spacing (SCS) of data is the same as or different from the preamble.

### Claim 5 (depends on 1)

The method of claim 1, further comprising:
receiving only data with the same numerology and format as a physical uplink shared channel (PUSCH) when the UE and the network are synchronized.