IP Library › Granted Patent US 12,199,802
Granted Patent B2
US 12,199,802 · App. 18/456,283 · Granted Jan 14, 2025

Method and device for scheduling request in NB IoT systems

Inventors: Di Su (Beijing, CN); Feifei Sun (Beijing, CN)
Assignee: Samsung Electronics Co., Ltd.
H04L27/26025H04J11/005H04L1/08H04L1/1664H04L1/18H04L1/1858H04L5/0053H04W72/20H04W74/0833H04W74/085H04J11/0073H04J11/0076H04L5/0007H04W74/002
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Quick Facts
Patent No.
US 12,199,802
App. No.
18/456,283
Granted
Jan 14, 2025
Kind
B2
Abstract

A method and device for reporting scheduling request are provided. The method includes the operations of acquiring a dedicated physical resource of a random access channel (RACH) configured to report a scheduling request, when the scheduling request is triggered, transmitting the RACH on the dedicated physical resource. The dedicated physical resource includes a plurality of periodic physical resources. Through this dedicated physical resource, the user equipment (UE) can report scheduling request in a contention-free random access way, and the capacity of a preamble sequence is improved and inter-cell interference is reduced.

Claims (18)

1. A method for reporting a scheduling request, the method comprising:

performing multiplication of hybrid automatic repeat request (HARQ)-acknowledgement (ACK) feedback a i and a codeword b i among two codewords for the scheduling request to generate modulation symbols a i b i ; and

transmitting the modulation symbols on a narrowband physical uplink shared channel (NPUSCH),

wherein in case that the scheduling request is to be transmitted using NPUSCH format 2, the codeword for the scheduling request is b i , i=0, 1, . . . , 15.

2. The method of claim 1 , further comprising generating the HARQ-ACK feedback a i .

3. The method of claim 1 , wherein the method for reporting the scheduling request is provided in a narrowband IoT system.

4. A method for receiving a scheduling request, the method comprising:

receiving modulation symbols on a narrowband physical uplink shared channel (NPUSCH), wherein the modulation symbols, a i b i are generated by performing multiplication of hybrid automatic repeat request (HARQ)-acknowledgement (ACK) feedback a i and a codeword b i among two codewords for the scheduling request,

identifying the HARQ ACK feedback a i and the codeword b i for the scheduling request, from the received modulation symbols, and

in case that the scheduling request is to be transmitted using NPUSCH format 2, the codeword for the scheduling request is b i , i=0, 1, . . . , 15.

5. The method of claim 4 , wherein a method for receiving the scheduling request is provided in a narrowband IoT system.

6. An evolved node B (eNB) for receiving a scheduling request, the eNB comprising:

a transceiver; and

a processor coupled with the transceiver and configured to:

receive modulation symbols on a narrowband physical uplink shared channel (NPUSCH), wherein the modulation symbols, a i b i are generated by performing multiplication of hybrid automatic repeat request (HARQ)-acknowledgement (ACK) feedback a i and a codeword b i among two codewords for the scheduling request,

identify the HARQ ACK feedback a i and the codeword b i for the scheduling request, from the received modulation symbols, and

in case that the scheduling request is to be transmitted using NPUSCH format 2, the codeword for the scheduling request is b i , i=0, 1, . . . , 15.

7. The eNB of claim 6 , wherein the eNB for receiving the scheduling request is included in a narrowband IoT system.

Priority Claims (3)
CN 201710184821.9 · Mar 24, 2017 · national
CN 201710282236.2 · Apr 26, 2017 · national
CN 201710432231.3 · Jun 9, 2017 · national
Continuity (3)
Continuation 16899106 · Jun 11, 2020
Continuation 15926321 · Mar 20, 2018
Related Publication 20230412437A1 · Dec 21, 2023
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