# US 10,873,971 B2 · Information transmission method, base station, and user equipment for exchanging resource information

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- Number: US 10,873,971 B2
- Document ID: US10873971B2
- Status: Granted
- Kind: B2
- Application number: 15/895,793
- Filed: 2018-02-13
- Published: 2018-06-21
- Granted: 2020-12-22
- Earliest claimed: 2015-08-14
- Assignees: Huawei Technologies Co., Ltd.
- Applicants: Huawei Technologies Co., Ltd.
- Inventors: Zheng Yu; Xiangdong Zhang
- Web page: https://patentgrep.com/patent/US10873971B2

## CPC

- H04W 74/006: {in the downlink, i.e. towards the terminal}
- H04W 56/0045: {compensating for timing error by altering transmission time}
- H04W 74/002: {Transmission of channel access control information}
- H04W 74/08: Non-scheduled access, e.g. ALOHA (hybrid access H04W74/02)
- H04W 74/0833: Random access procedures, e.g. with 4-step access
- H04W 74/0858: {collision detection}
- H04W 74/0866: {using a dedicated channel for access}
- Y02D 30/70: in wireless communication networks
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

An information transmission method includes: receiving a random access preamble sent by user equipment (UE); generating first information according to the received random access preamble, where the first information is information about a random access response to the random access preamble, and the first information includes at least one of the following information: timing advance indication information, indication information of a narrowband resource used for transmission of a control channel, indication information of a subframe used for transmission of the control channel, indication information of a demodulation reference signal scrambling sequence initialization parameter used for transmission of the control channel, indication information of a coverage enhancement level used for transmission of the control channel, or resource allocation information used for transmission of second information, where the second information is information about a response to the first information; and sending the first information to the UE.

## Claims

### Claim 1

A method implemented by a user equipment (UE), the method comprising:
sending a random access preamble to a base station; and
receiving first information corresponding to the random access preamble, wherein the first information comprises information about a random access response of the base station to the random access preamble, and wherein the first information further comprises:
indication information of a narrowband resource used for transmission of a control channel; or
resource allocation information used for transmission of second information by the UE, wherein the second information comprises information about a response by the UE to the first information and the resource allocation information used for transmission of second information indicates the narrowband resource and resource allocation within a narrowband,
wherein the narrowband includes six physical resource blocks (PRBs), and wherein 3 bits are used for indicating the resource allocation within the narrowband as illustrated in the following table:
Resource indication bit status
Resource within
within the narrowband
the narrowband
000
PRB n
001
PRB n + 1
010
PRB n + 2
011
PRB n + 3
100
PRB n + 4
101
PRB n + 5
110
PRB n, PRB n + 1
111
PRB n + 2, PRB n + 3.

### Claim 2 (depends on 1)

The method of claim 1, wherein the first information further comprises indication information of a temporary cell-radio network temporary identifier, indication information of the random access preamble, rollback indication information, or indication information of a control channel candidate set of the control channel.

### Claim 3 (depends on 1)

The method of claim 1, wherein the first information further comprises frequency hopping indication information of the second information, coverage enhancement transmission indication information of the second information, start offset indication information of a physical uplink control channel resource, or frequency hopping indication information of the control channel.

### Claim 4 (depends on 1)

The method of claim 1, wherein the first information further comprises transmit power control indication information used by the UE to send the second information, modulation and coding method indication information used by the UE to send the second information, uplink delay indication information used by the UE to send the second information, indication information indicating whether the UE reports channel state information, start symbol indication information for transmission of a UE-specific message, control channel configuration set identifier indication information of the control channel, or indication information of a transmission type used for transmission of the control channel.

### Claim 5 (depends on 1)

The method of claim 1, wherein the first information further comprises format indication information of a downlink control channel or format indication information of a downlink data channel.

### Claim 6 (depends on 5)

The method of claim 5, wherein the method further comprises receiving the first information by the downlink control channel or the downlink data channel.

### Claim 7

A base station, comprising:
a receiver configured to receive a random access preamble from user equipment (UE);
a processor communicatively coupled to the receiver and configured to generate first information according to the received random access preamble, wherein the first information comprises information about a random access response to the random access preamble, and wherein the first information comprises:
indication information of a narrowband resource used for transmission of a control channel; or
resource allocation information used for transmission of second information, wherein the second information comprises information about a response to the first information and the resource allocation information used for transmission of second information indicates the narrowband resource and resource allocation within a narrowband; and
a transmitter communicatively coupled to the processor and configured to send the first information to the UE,
wherein the narrowband includes six physical resource blocks (PRBs), and wherein 3 bits are used for indicating the resource allocation within narrowband as illustrated in the following table:
Resource indication lit status
Resource within
within the narrowband
the narrowband
000
PRB n
001
PRB n + 1
010
PRB n + 2
011
PRB n + 3
100
PRB n + 4
101
PRB n + 5
110
PRB n, PRB n + 1
111
PRB n + 2, PRB n+ 3.

### Claim 8 (depends on 7)

The base station of claim 7, wherein the first information further comprises indication information of a temporary cell-radio network temporary identifier, indication information of the random access preamble, rollback indication information, or indication information of a control channel candidate set of the control channel.

### Claim 9 (depends on 7)

The base station of claim 7, wherein the first information further comprises transmit power control indication information used by the UE to send the second information, modulation and coding method indication information used by the UE to send the second information, uplink delay indication information used by the UE to send the second information, indication information indicating whether the UE reports channel state information, start symbol indication information for transmission of a UE-specific message, control channel configuration set identifier indication information of the control channel, or indication information of a transmission type used for transmission of the control channel.

### Claim 10 (depends on 7)

The base station of claim 7, wherein the first information further comprises format indication information of a downlink control channel or format indication information of a downlink data channel.

### Claim 11 (depends on 10)

The base station of claim 10, wherein the transmitter is further configured to send the first information by the downlink control channel or the downlink data channel.

### Claim 12

A user equipment (UE), comprising:
a transmitter configured to send a random access preamble to a base station; and
a receiver communicatively coupled to the transmitter and configured to receive first information corresponding to the random access preamble, wherein the first information comprises information about a random access response of the base station to the random access preamble, and wherein the first information further comprises:
indication information of a narrowband resource used for transmission of a control channel; or
resource allocation information used for transmission of second information by the UE, wherein the second information comprises information about a response by the UE to the first information, and wherein the resource allocation information used for transmission of the second information indicates the narrowband resource and resource allocation within a narrowband,
wherein the narrowband includes six physical resource blocks (PRBs), and wherein 3 bits are used for indicating the resource allocation within the narrowband, as illustrated in the following table:
Resource indication bit status
Resource within
within the narrowband
the narrowband
000
PRB n
001
PRB n + 1
010
PRB n + 2
011
PRB n + 3
100
PRB n + 4
101
PRB n + 5
110
PRB n, PRB n + 1
111
PPB n + 2, PRB n + 3.

### Claim 13 (depends on 12)

The user equipment of claim 12, wherein the first information further comprises indication information of a temporary cell-radio network temporary identifier, indication information of the random access preamble, rollback indication information, or indication information of a control channel candidate set of the control channel.

### Claim 14 (depends on 12)

The user equipment of claim 12, wherein the first information further comprises frequency hopping indication information of the second information, coverage enhancement transmission indication information of the second information, start offset indication information of a physical uplink control channel resource, or frequency hopping indication information of the control channel.

### Claim 15 (depends on 12)

The user equipment of claim 12, wherein the first information further comprises transmit power control indication information used by the UE to send the second information, modulation and coding method indication information used by the UE to send the second information, uplink delay indication information used by the UE to send the second information, indication information indicating whether the UE reports channel state information, start symbol indication information for transmission of a UE-specific message, control channel configuration set identifier indication information of the control channel, or indication information of a transmission type used for transmission of the control channel.

### Claim 16 (depends on 12)

The user equipment of claim 12, wherein the first information further comprises format indication information of a downlink control channel or format indication information of a downlink data channel.

### Claim 17 (depends on 16)

The user equipment of claim 16, wherein the receiver is further configured to receive the first information by the downlink control channel or the downlink data channel.