US-20260129661-A1 - METHOD AND APPARATUS FOR TRANSMISSION IN ACCESS PROCEDURE IN A WIRELESS COMMUNICATION SYSTEM

US20260129661A1US 20260129661 A1US20260129661 A1US 20260129661A1US-20260129661-A1

Abstract

Methods, systems, and apparatuses are provided for transmission in access procedures in a wireless communication system, wherein a method of a first device comprises receiving a first message, from a reader, for initiating a random access procedure, performing a first Device-to-Reader (D2R) transmission for Message 1 (Msg1), to the reader, for the random access procedure, wherein the first D2R transmission for Msg1 comprises a first Identity (ID), receiving a Message 2 (Msg2) message including multiple IDs, wherein the multiple IDs comprise at least the first ID, and wherein the Msg2 message includes a single size indication associated with the multiple IDs, deriving or determining a data packet size based on the single size indication in the Msg2 message; and performing a second D2R transmission in response to the Msg2 message, wherein the second D2R transmission comprises a data packet with the data packet size.

Inventors

Ming-Che Li

Assignees

ASUS TECHNOLOGY LICENSING INC.

Dates

Publication Date: 20260507
Application Date: 20251106

Claims (11)

1 . A method for a first device, comprising: receiving a first message, from a reader, for initiating a random access procedure; performing a first Device-to-Reader (D2R) transmission for Message 1 (Msg1), to the reader, for the random access procedure, wherein the first D2R transmission for Msg1 comprises a first Identity (ID); receiving a Message 2 (Msg2) message including multiple IDs, wherein the multiple IDs comprise at least the first ID, and wherein the Msg2 message includes a single size indication associated with the multiple IDs; deriving or determining a data packet size based on the single size indication in the Msg2 message; and performing a second D2R transmission in response to the Msg2 message, wherein the second D2R transmission comprises a data packet with the data packet size.
2 . The method of claim 1 , wherein the Msg2 message including the multiple IDs schedules or triggers multiple D2R transmissions, and/or each of the multiple D2R transmissions comprises one data packet with a same data packet size derived or determined based on the single size indication in the Msg2 message.
3 . The method of claim 2 , wherein the multiple D2R transmissions are in a same transmission occasion.
4 . The method of claim 1 , wherein the single size indication is a single field of a D2R transport block size.
5 . The method of claim 1 , wherein the first message is a paging message, and/or the random access procedure is a contention-based random access procedure.
6 . A method for a reader, comprising: transmitting a first message for initiating a random access procedure; receiving multiple Device-to-Reader (D2R) transmissions for Message 1 (Msg1) for the random access procedure, wherein the multiple D2R transmissions for Msg1 comprise a first D2R transmission for Msg1 from a first device; obtaining or receiving multiple Identities (IDs) from the multiple D2R transmissions for Msg1, wherein the multiple IDs comprise at least a first ID in the first D2R transmission for Msg1; transmitting a Message 2 (Msg2) message including the multiple IDs, wherein the Msg2 message includes a single size indication, for a data packet size, associated with the multiple IDs; and receiving at least a second D2R transmission from the first device, wherein the second D2R transmission comprises a data packet with the data packet size.
7 . The method of claim 6 , wherein the Msg2 message including the multiple IDs schedules or triggers multiple D2R transmissions, and/or each of the multiple D2R transmissions comprises one data packet with a same data packet size.
8 . The method of claim 7 , wherein the multiple D2R transmissions are in a same transmission occasion.
9 . The method of claim 6 , wherein each of the multiple D2R transmissions for Msg1 comprises one of the multiple IDs, and/or wherein the multiple D2R transmissions for Msg1 are transmitted by multiple devices.
10 . The method of claim 6 , wherein the single size indication is a single field of a D2R transport block size.
11 . The method of claim 6 , wherein the first message is a paging message, and/or the random access procedure is a contention-based random access procedure.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS The present application claims priority to and the benefit of U.S. Provisional Patent Application Ser. No. 63/717,080, filed Nov. 6, 2024, which is hereby fully incorporated herein by reference. FIELD This disclosure generally relates to wireless communication networks and, more particularly, to a method and apparatus for transmission in access procedures in a wireless communication system. BACKGROUND With the rapid rise in demand for communication of large amounts of data to and from mobile communication devices, traditional mobile voice communication networks are evolving into networks that communicate with Internet Protocol (IP) data packets. Such IP data packet communication can provide users of mobile communication devices with voice over IP, multimedia, multicast and on-demand communication services. An exemplary network structure is an Evolved Universal Terrestrial Radio Access Network (E-UTRAN). The E-UTRAN system can provide high data throughput in order to realize the above-noted voice over IP and multimedia services. A new radio technology for the next generation (e.g., 5G) is currently being discussed by the 3GPP standards organization. Accordingly, changes to the current body of 3GPP standard are currently being submitted and considered to evolve and finalize the 3GPP standard. SUMMARY Methods, systems, and apparatuses are provided transmission in access procedures in a wireless communication system. As such, considering ultra-low complexity and power consumption of Ambient Internet of Things (IoT) devices, this shortens time duration for Message 2 (Msg2) monitoring, for Msg2 reception, and handles scheduling of Message 3 (Msg3) sizes and resources. In various embodiments, a method for a first device in a wireless communication system comprises receiving a first message, from a reader, for initiating a random access procedure, performing a first Device-to-Reader (D2R) transmission for Message 1 (Msg1), to the reader, for the random access procedure, wherein the first D2R transmission for Msg1 comprises a first Identity (ID), receiving a Msg2 message including multiple IDs, wherein the multiple IDs comprise at least the first ID, and wherein the Msg2 message includes a single size indication associated with the multiple IDs, deriving or determining a data packet size based on the single size indication in the Msg2 message; and performing a second D2R transmission in response to the Msg2 message, wherein the second D2R transmission comprises a data packet with the data packet size. In various embodiments, a method for a reader in a wireless communication system comprises transmitting a first message for initiating a random access procedure, receiving multiple D2R transmissions for Msg1 for the random access procedure, wherein the multiple D2R transmissions for Msg1 comprise a first D2R transmission for Msg1 from a first device, obtaining or receiving multiple IDs from the multiple D2R transmissions for Msg1, wherein the multiple IDs comprise at least a first ID in the first D2R transmission for Msg1, transmitting a Msg2 message including the multiple IDs, wherein the Msg2 message includes a single size indication, for a data packet size, associated with the multiple IDs, and receiving at least a second D2R transmission from the first device, wherein the second D2R transmission comprises a data packet with the data packet size BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a diagram of a wireless communication system, in accordance with embodiments of the present invention. FIG. 2 is a block diagram of a transmitter system (also known as access network) and a receiver system (also known as user equipment or UE), in accordance with embodiments of the present invention. FIG. 3 is a functional block diagram of a communication system, in accordance with embodiments of the present invention. FIG. 4 is a functional block diagram of the program code of FIG. 3, in accordance with embodiments of the present invention. FIGS. 5A-5C are example diagrams showing a first message, e.g., the Msg0, may indicate/schedule two access occasions (e.g., each with a time index l=0t or lt) in time domain and four frequency resources (e.g., each with a frequency index k=0f, 1f, 2f, or 3f) in frequency domain, such that there are 8 first resources in the set of first resources for utilization of D2R transmissions for Msg1 from one or multiple devices, in accordance with embodiments of the present invention. FIG. 6 is a flow diagram of a method of a first device in a wireless communication system comprising receiving a first message (from a reader or network node) for initiating a (random) access procedure, performing a first D2R transmission for the (random) access procedure, receiving an R2D transmission or response corresponding to the first D2R transmission, and performing a second D2R transmission in response to the R2D transmission or the response, in accordance with embodiments