# US 10,764,899 B2 · Machine-to-machine (M2M) terminal, base station, method, and computer readable medium

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- Number: US 10,764,899 B2
- Document ID: US10764899B2
- Status: Granted
- Kind: B2
- Application number: 16/526,735
- Filed: 2019-07-30
- Published: 2019-11-21
- Granted: 2020-09-01
- Earliest claimed: 2014-01-30
- Assignees: NEC Corporation
- Applicants: NEC Corporation
- Inventors: Hisashi Futaki
- Web page: https://patentgrep.com/patent/US10764899B2

## CPC

- H04W 72/51: based on terminal or device properties
- H04W 4/70: Services for machine-to-machine communication [M2M] or machine type communication [MTC]
- H04W 16/00: Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W 48/16: Discovering, processing access restriction or access information
- H04W 76/10: Connection setup
- H04B 7/24: for communication between two or more posts (wireless communication networks H04W)
- H04B 7/26: at least one of which is mobile
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04B: TRANSMISSION

## Abstract

A Machine-to-machine (M2M) terminal (11) is configured to receive a first notification from a base station (13) and to transmit a second notification to the base station (13) when establishing a radio connection with the base station (13) after reception of the first notification or while performing a procedure for establishing a bearer between the M2M terminal (11) and a core network (14) after reception of the first notification. The first notification indicates whether specific coverage enhancement processing is supported in a cell (130) of the base station (13) in which the M2M terminal (11) is located. The second notification indicates that the specific coverage enhancement processing is required or being executed by the M2M terminal (11). It is thus possible to provide an improvement to allow the M2M terminal to determine necessity of special coverage enhancement processing for M2M terminals.

## Claims

### Claim 1

A user equipment (UE) comprising:
a transceiver; and
a processor, including a hardware processor, configured to:
receive, via the transceiver, a system information block message, the system information block message including enhanced coverage configuration information for Physical Random Access Channel (PRACH) transmission and a Reference Signal Received Power (RSRP) threshold value;
determine whether an enhanced coverage is necessary or not based on both (i) a comparison of the RSRP threshold value with an RSRP value measured by the UE, and (ii) whether or not the UE is capable of the enhanced coverage; and
transmit, via the transceiver, random access preambles with repetitions using PRACH resources corresponding to the enhanced coverage.

### Claim 2 (depends on 1)

The UE according to claim 1, wherein the processor is further configured to receive, via the transceiver, a random access response message with repetitions using resources corresponding to the enhanced coverage.

### Claim 3

A base station configured to operate a cell, the base station comprising:
a transceiver; and
a processor, including a hardware processor, configured to:
broadcast, in the cell, via the transceiver, a system information block message, the system information block message including enhanced coverage configuration information for Physical Random Access Channel (PRACH) transmission and a Reference Signal Received Power (RSRP) threshold value; and
receive, from a user equipment (UE), via the transceiver, random access preambles with repetitions using PRACH resources corresponding to an enhanced coverage when the UE determines that the enhanced coverage is necessary based on both (i) a comparison of the RSRP threshold value with an RSRP value measured by the UE, and (ii) whether or not the UE is capable of the enhanced coverage.

### Claim 4 (depends on 3)

The base station according to claim 3, wherein the processor is further configured to transmit, via the transceiver, a random access response message with repetitions using resources corresponding to the enhanced coverage.

### Claim 5

A method of a user equipment (UE), the method comprising:
receiving a system information block message, the system information block message including enhanced coverage configuration information for Physical Random Access Channel (PRACH) transmission and a Reference Signal Received Power (RSRP) threshold value;
determining whether an enhanced coverage is necessary or not based on both (i) a comparison of the RSRP threshold value with an RSRP value measured by the UE, and (ii) whether or not the UE is capable of the enhanced coverage; and
transmitting random access preambles with repetitions using PRACH resources corresponding to the enhanced coverage.

### Claim 6

A method of a base station that operates a cell, the method comprising:
broadcasting, in the cell, a system information block message, the system information block message including enhanced coverage configuration information for Physical Random Access Channel (PRACH) transmission and a Reference Signal Received Power (RSRP) threshold value; and
receiving, from a user equipment (UE), random access preambles with repetitions using PRACH resources corresponding to an enhanced coverage when the UE determines that the enhanced coverage is necessary based on both (i) a comparison of the RSRP threshold value with an RSRP value measured by the UE, and (ii) whether or not the UE is capable of the enhanced coverage.