IP Library Granted Patent US 10,893,549
Granted Patent B2
US 10,893,549 · App. 16/090,208 · Granted Jan 12, 2021

Method performed by user equipment, method performed by evolved Node B, user equipment, and evolved Node B

Inventors: Shohei Yamada (Sakai, JP); Shoichi Suzuki (Sakai, JP)
Assignee: SHARP KABUSHIKI KAISHA
H04W74/0866H04L27/26H04W74/0841H04L5/0053H04W84/042
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Quick Facts
Patent No.
US 10,893,549
App. No.
16/090,208
Granted
Jan 12, 2021
Kind
B2
Abstract

A method performed by a user equipment (UE) is described. The method includes performing a random access procedure in a first downlink frequency resource and/or a first uplink frequency resource; in the random access procedure, monitoring an NPDCCH in the first downlink frequency resource; detecting an NPDCCH in the first downlink frequency resource; transmitting, to an evolved Node B (eNB), a narrowband physical uplink shared channel (NPUSCH) on a second uplink frequency resource based on detection of the NPDCCH on the first downlink frequency resource, in a case that the NPDCCH contains an uplink (UL) grant for contention resolution; and receiving, from the evolved Node B (eNB), a narrowband physical downlink shared channel (NPDSCH) on a second downlink frequency resource based on detection of the NPDCCH on the first downlink frequency resource, in a case that the NPDCCH contains a downlink (DL) assignment for contention resolution.

Claims (30)

1. A method performed by a user equipment (UE), comprising:

performing a random access procedure;

in the random access procedure,

monitoring a narrowband physical downlink control channel (NPDCCH) in a first downlink (DL) frequency resource on a DL anchor carrier;

detecting the NPDCCH in the first DL frequency resource on the DL anchor carrier;

transmitting, to an evolved Node B (eNB), a narrowband physical uplink shared channel (NPUSCH) on a second uplink (UL) frequency resource on a UL non-anchor carrier based on detection of the NPDCCH on the first DL frequency resource, in a case that the NPDCCH contains a UL grant for contention resolution; and

receiving, from the eNB, a narrowband physical downlink shared channel (NPDSCH) on a second DL frequency resource on a DL non-anchor carrier based on detection of the NPDCCH on the first DL frequency resource, in a case that the NPDCCH contains a DL assignment for contention resolution.

2. A method performed by an evolved Node B (eNB), comprising:

performing a random access procedure;

in the random access procedure,

transmitting, to a user equipment (UE), a narrowband physical downlink control channel (NPDCCH) in a first downlink (DL) frequency resource on a DL anchor carrier;

receiving, from the UE, a narrowband physical uplink shared channel (NPUSCH) on a second uplink (UL) frequency resource on a UL non-anchor carrier based on detection of the NPDCCH on the first DL frequency resource, in a case that the NPDCCH contains a UL grant for contention resolution; and

transmitting, to the UE, a narrowband physical downlink shared channel (NPDSCH) on a second DL frequency resource on a DL non-anchor carrier based on detection of the NPDCCH on the first DL frequency resource, in a case that the NPDCCH contains a DL assignment for contention resolution.

3. A user equipment (UE), comprising:

a processor; and

a memory in electronic communication with the processor, wherein instructions stored in the memory are executable to:

perform a random access procedure;

in the random access procedure,

monitor a narrowband physical downlink control channel (NPDCCH) in a first downlink (DL) frequency resource on a DL anchor carrier;

detect the NPDCCH in the first DL frequency resource on the DL anchor carrier; and

transmit, to an evolved Node B (eNB), a narrowband physical uplink shared channel (NPUSCH) on a second uplink (UL) frequency resource on a UL non-anchor carrier based on detection of the NPDCCH on the first DL frequency resource, in a case that the NPDCCH contains a UL grant for contention resolution; and

receive, from the eNB, a narrowband physical downlink shared channel (NPDSCH) on a second DL frequency resource on a DL non-anchor carrier based on detection of the NPDCCH on the first DL frequency resource, in a case that the NPDCCH contains a DL assignment for contention resolution.

4. An evolved Node B (eNB), comprising:

a processor; and

a memory in electronic communication with the processor, wherein instructions stored in the memory are executable to:

perform a random access procedure;

in the random access procedure,

transmit, to a user equipment (UE), a narrowband physical downlink control channel (NPDCCH) in a first downlink (DL) frequency resource on a DL anchor carrier;

receive, from the UE, a narrowband physical uplink shared channel (NPUSCH) on a second uplink (UL) frequency resource on a UL non-anchor carrier based on detection of the NPDCCH on the first DL frequency resource, in a case that the NPDCCH contains a UL grant for contention resolution; and

transmit, to the UE, a narrowband physical downlink shared channel (NPDSCH) on a second DL frequency resource on a DL non-anchor carrier based on detection of the NPDCCH on the first DL frequency resource, in a case that the NPDCCH contains a DL assignment for contention resolution.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 29, 2018
From: YAMADA, SHOHEI; SUZUKI, SHOICHI
To: SHARP KABUSHIKI KAISHA
Reel/Frame 047013/0456 →
Continuity (2)
Provisional Application 62315174 · Mar 30, 2016
Related Publication 20190124699A1 · Apr 25, 2019