IP Library › Granted Patent US 12,382,475
Granted Patent B2
US 12,382,475 · App. 17/462,927 · Granted Aug 5, 2025

Method and apparatus for enhancing coverage of machine type communication (MTC) devices

Inventors: Moon-il Lee (Melville, NY); Janet A. Stern-Berkowitz (Little Neck, NY); Nobuyuki Tamaki (Melville, NY); John W. Haim (Baldwin, NY); Pouriya Sadeghi (San Diego, CA); Marian Rudolf (Montreal, CA); Shahrokh Nayeb Nazar (San Diego, CA)
Assignee: InterDigital Patent Holdings, Inc.
H04W72/30H04B17/318H04L1/1819H04L1/189H04W4/029H04W4/70H04W24/02H04W74/006H04W4/027H04W4/06H04W48/12H04W74/0833Y02D30/70
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Quick Facts
Patent No.
US 12,382,475
App. No.
17/462,927
Granted
Aug 5, 2025
Kind
B2
Abstract

A method and apparatus are described for a low cost machine-type-communication (LC-MTC) wireless transmit/receive unit (WTRU) to enhance coverage. An example method for physical broadcast channel (PBCH) enhancement includes receiving system information on an enhanced PBCH (ePBCH). The ePBCH is located in a set of radio frames which is a subset of available radio frames, where the subset includes fewer than all the available radio frames. The ePBCH is received in at least one radio frame of the set of radio frames. An example method for physical random access channel (PRACH) enhancement includes receiving configuration of legacy PRACH resources and enhanced PRACH (ePRACH) resources. The WTRU selects one of legacy PRACH resources or ePRACH resources based on a coverage capability. Another example method for PRACH enhancement includes receiving configuration of ePRACH resources. The ePRACH resources include multiple ePRACH resource types, each ePRACH resource type being associated with a coverage capability.

Claims (22)

1. A method implemented by a wireless transmit receive unit (WTRU), the method comprising:

receiving control information, wherein the control information indicates one or more physical shared channel resources to be used for a physical shared channel transmission;

receiving the physical shared channel transmission, wherein the physical shared channel transmission is received using the one or more physical shared channel resources; and

transmitting ACK or NACK (A/N) feedback for the physical shared channel transmission, wherein the A/N feedback is sent using a set of A/N resources that is determined based on a function of an index of the one or more physical shared channel resources in which the physical shared channel transmission was received, wherein the set of A/N resources is determined based on a beginning resource of the one or more physical shared channel resources.

2. The method of claim 1 , wherein the set of A/N resources are at least one resource block of time and frequency.

3. The method of claim 1 , wherein the set of A/N resources includes at least one resource block and at least one cyclic shift, wherein determining the at least one cyclic shift is based on information from higher layers.

4. The method of claim 3 , wherein determining the at least one cyclic shift is based on information from higher layers.

5. The method of claim 1 , wherein the A/N resources are not determined based on the control channel information or resources of a transmission that contained the control channel information.

6. A wireless transmit receive unit (WTRU) the WTRU comprising:

a processor;

a transceiver operatively connected to the processor, wherein the transceiver and processor are configured to receive control information, wherein the control information indicates one or more physical shared channel resources to be used for a physical shared channel transmission;

the transceiver and processor are configured to receive the physical shared channel transmission, wherein the physical shared channel transmission is received using the one or more physical shared channel resources; and

the transceiver and processor are configured to transmit ACK or NACK (A/N) feedback for the physical shared channel transmission, wherein the A/N feedback is sent using a set of A/N resources in which the physical shared channel transmission was received, wherein the set of A/N resources is determined based on a function of an index of the one or more physical shared channel resources, wherein the set of A/N resources is determined based on a beginning resource of the one or more physical shared channel resources.

7. The WTRU of claim 6 , wherein the set of A/N resources are at least one resource block of time and frequency.

8. The WTRU of claim 6 , wherein the set of A/N resources includes at least one resource block and at least one cyclic shift.

9. The WTRU of claim 8 , wherein determining the at least one cyclic shift is based on information from higher layers.

10. The WTRU of claim 6 , wherein the A/N resources are not determined based on the control channel information or resources of a transmission that contained the control channel information.

11. A wireless transmit receive unit (WTRU) the WTRU comprising:

a processor;

a transceiver operatively connected to the processor, wherein the transceiver and processor are configured to receive control information, wherein the control information indicates one or more physical shared channel resources to be used for a physical shared channel transmission;

the transceiver and processor are configured to receive the physical shared channel transmission, wherein the physical shared channel transmission is received using the one or more physical shared channel resources; and

the transceiver and processor are configured to transmit ACK or NACK (A/N) feedback for the physical shared channel transmission, wherein the A/N feedback is sent using a set of A/N resources in which the physical shared channel transmission was received, wherein the set of A/N resources is determined based on a function of an index of the one or more physical shared channel resources, wherein the set of A/N resources is determined based on a beginning resource of the one or more physical shared channel resources wherein the set of A/N resources are at least one resource block of time and frequency, wherein the set of A/N resources includes at least one resource block and at least one cyclic shift, wherein the at least one cyclic shift is determined based on information from higher layers.

Continuity (7)
Continuation 16192486 · Nov 15, 2018
Continuation 14046173 · Oct 4, 2013
Provisional Application 61710315 · Oct 5, 2012
Provisional Application 61753263 · Jan 16, 2013
Provisional Application 61807945 · Apr 3, 2013
Provisional Application 61863223 · Aug 7, 2013
Related Publication 20220022163A1 · Jan 20, 2022
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