CN-122002618-A - Shared preamble set for coherent joint transmission random access channel

Abstract

Systems, methods, apparatuses, and computer program products for a shared preamble set for a coherent joint transmission (cqt) Random Access Channel (RACH). A method may include receiving at least one preamble index from a network element and at least one other network element for coherent joint transmission associated with the network element and the at least one other network element. The method may also include determining a set of coherent joint transmission indices for the network element and at least one other network element based on the at least one preamble index. The method may further include determining a set of coherent joint transmission services based on metric information associated with the set of coherent joint transmission indexes. The method may further include synchronizing with the network element and one or more of the at least one other network element.

Inventors

• A. Avola
• GOUDA BHANU
• TOELLI ANTTI
• S-J. Hakula
• T. Costkela
• J.P. Calarenin

Assignees

• 诺基亚技术有限公司

Dates

Publication Date

20260508

Application Date

20251106

Priority Date

20241107

Claims (20)

1. 1. A method for communication, comprising: receiving at least one preamble index from a network element and at least one other network element for coherent joint transmission associated with the network element and the at least one other network element; Determining a set of coherent joint transmission indices for the network element and the at least one other network element based on the at least one preamble index; determining a set of coherent joint transmission services based on metric information associated with the set of coherent joint transmission indexes, wherein the set of coherent joint transmission services comprises the network element and one or more other network elements of the at least one other network element to which a connection is to be established having coherent joint transmission capabilities, and Synchronizing with said one or more of said network element and said at least one other network element.
2. 2.A method for communication, comprising: determining at least one coherent joint transmission preamble index for coherent joint transmission associated with the network element and at least one other network element; transmitting the at least one coherent joint transmission preamble index to a user equipment, and Based on the set of coherent joint transmission services determined by the at least one coherent joint transmission preamble index, receiving a transmission from the user equipment, Wherein the transmission is synchronized with the network element and one or more of the at least one other network element, and Wherein the set of coherent joint transmission services comprises the network element and the one or more of the at least one other network element.
3. 3. An apparatus for communication, comprising: At least one processor, and At least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to: receiving at least one preamble index from a network element and at least one other network element for coherent joint transmission associated with the network element and the at least one other network element; Determining a set of coherent joint transmission indices for the network element and the at least one other network element based on the at least one preamble index; determining a set of coherent joint transmission services based on metric information associated with the set of coherent joint transmission indexes, wherein the set of coherent joint transmission services comprises the network element and one or more other network elements of the at least one other network element to which a connection is to be established having coherent joint transmission capabilities, and Synchronizing with said one or more of said network element and said at least one other network element.
4. 4. The apparatus of claim 3, wherein the computer program code, when executed by the at least one processor, further causes the apparatus at least to: selecting a preamble index belonging to the coherent joint transmission service set from the coherent joint transmission index set based on the coherent joint transmission index set and the coherent joint transmission service set, and Transmitting a preamble corresponding to the selected preamble index to the one or more of the synchronized network element and the at least one other network element from the set of coherent joint transmission indices belonging to the set of coherent joint transmission services.
5. 5. The apparatus of claim 3 or 4, wherein a coherent joint transmission index for the network element is different from a coherent joint transmission index for the at least one other network element.
6. 6. The apparatus of claim 3 or 4, wherein the at least one preamble index is received from the network element or the at least one other network element via a system information block.
7. 7. The apparatus of claim 3 or 4, wherein the metric information is associated with the network element or the at least one other network element and comprises at least one of: The reference signal received power of the transmission from the network element or the at least one other network element, A reference signal strength indication of a transmission from the network element or the at least one other network element, or A timing difference between the network element and the at least one other network element of transmissions from the network element or the at least one other network element.
8. 8. The apparatus of claim 7, wherein the metric information further comprises at least one of: a reference signal received power range of a transmission from the network element or the at least one other network element, or A reference signal strength indication range of transmissions from the network element or the at least one other network element.
9. 9. The apparatus of claim 3 or 4, wherein the at least one preamble index is associated with the network element and the at least one other network element.
10. 10. The apparatus of claim 3 or 4, wherein the synchronizing comprises selecting physical random access channel preamble indices belonging to one or more of the network element and the at least one other network element with which synchronization is to be established.
11. 11. The apparatus of claim 10, wherein the synchronizing comprises transmitting a physical random access channel to the one or more of the network element and the at least one other network element based on the physical random access channel preamble index.
12. 12. The apparatus of claim 11, wherein, The physical random access channel is transmitted on orthogonal resources to the network element and the one or more of the at least one other network element, respectively, or The physical random access channel is transmitted to the network element and the one or more of the at least one other network element on the same physical resource.
13. 13. An apparatus for communication, comprising: At least one processor, and At least one memory storing instructions, wherein the instructions, when executed by the at least one processor, cause the apparatus at least to: determining at least one coherent joint transmission preamble index for coherent joint transmission associated with the network element and at least one other network element; Transmitting a set of coherent joint transmission preamble indices to a user equipment, and Based on a set of coherent joint transmission services determined by the set of coherent joint transmission preamble indices, receiving a transmission from the user equipment, Wherein the transmission is synchronized with the network element and one or more of the at least one other network element, and Wherein the set of coherent joint transmission services comprises the network element and the one or more of the at least one other network element.
14. 14. The apparatus of claim 13, wherein the at least one coherent joint transmission preamble index is transmitted to the user equipment via a system information block.
15. 15. The apparatus of claim 14, wherein the system information block comprises metric information for the network element and the at least one other network element.
16. 16. The apparatus of any of claims 13-15, wherein the transmission is further received from the user equipment based on the metric information of the network element and the at least one other network element.
17. 17. The apparatus of claim 16, wherein the metric information comprises at least one of: The reference signal received power of the transmission from the network element or the at least one other network element, A reference signal strength indication of a transmission from the network element or the at least one other network element, or A timing difference between the network element and the at least one other network element.
18. 18. The apparatus of claim 16, wherein the metric information further comprises at least one of: a reference signal received power range of a transmission from the network element or the at least one other network element, or A reference signal strength indication range of transmissions from the network element or the at least one other network element.
19. 19. The apparatus of any of claims 13-15, wherein the transmission comprises a physical random access channel with a selected preamble index belonging to the network element and the one or more of the at least one other network element.
20. 20. The apparatus of claim 19, wherein, The physical random access channel is received from the user equipment on orthogonal resources for the network element and the one or more of the at least one other network element, respectively, or The physical random access channel is received from the user equipment on the same physical resource simultaneously for the network element and the one or more of the at least one other network element.

Description

Shared preamble set for coherent joint transmission random access channel Technical Field Some example embodiments may relate generally to mobile or wireless telecommunication systems, such as Long Term Evolution (LTE) or fifth generation (5G) New Radio (NR) access technologies, or 5G Beyond, or sixth generation (6G) access technologies, or other communication systems. For example, certain example embodiments may relate to a shared preamble set for a coherent joint transmission (cqt) Random Access Channel (RACH). Background Examples of mobile or wireless telecommunication systems may include Universal Mobile Telecommunications System (UMTS) terrestrial radio access network (UTRAN), long Term Evolution (LTE) evolved UTRAN (E-UTRAN), LTE-advanced (LTE-a), multeFire, LTE-a Pro, fifth generation (5G) radio access technology or New Radio (NR) access technology and/or sixth generation (6G) radio access technology. The fifth generation (5G) and sixth generation (6G) wireless systems refer to Next Generation (NG) radio systems and network architectures. The 5G and 6G network technologies are mostly based on New Radio (NR) technologies, but the 5G/6G (or NG) network may also be established on the E-UTRAN radio. It is estimated that NR can provide bit rates of about 10-20 GBit/s or higher and can support at least enhanced mobile broadband (eMBB) and ultra-reliable low-delay communications (URLLC) as well as large-scale machine type communications (mMTC). NR is expected to provide ultra-wideband and ultra-robust, low-latency connections and large-scale networks to support internet of things (IoT). Disclosure of Invention Some example embodiments may relate to a method. The method may include receiving, from a network element and at least one other network element, at least one preamble index for coherent joint transmission associated with the network element and the at least one other network element. The method may also include determining a set of coherent joint transmission indices for the network element and at least one other network element based on the at least one preamble index. The method may further include determining a set of coherent joint transmission services based on metric information associated with the set of coherent joint transmission indexes. According to some example embodiments, the set of coherent joint transmission services may include the network element and one or more of the at least one other network elements having coherent joint transmission capabilities with which a connection is to be established. The method may further include synchronizing with the network element and one or more of the at least one other network element. Other example embodiments may relate to an apparatus. The apparatus may include at least one processor and at least one memory storing instructions that, when executed by the processor, cause the apparatus to determine a set of coherent joint transmission indices for the network element and at least one other network element based at least on the at least one preamble index. The apparatus may also be caused to determine a set of coherent joint transmission services based on metric information associated with the set of coherent joint transmission indexes. According to some example embodiments, the set of coherent joint transmission services may include the network element and one or more of the at least one other network elements having coherent joint transmission capabilities with which a connection is to be established. The apparatus may also be synchronized with one or more of the network element and the at least one other network element. Other example embodiments may relate to an apparatus. The apparatus may include means for receiving, from a network element and at least one other network element, at least one preamble index for coherent joint transmission associated with the network element and the at least one other network element. The apparatus may also include means for determining a set of coherent joint transmission indices for the network element and at least one other network element based on the at least one preamble index. The apparatus may further include means for determining a set of coherent joint transmission services based on metric information associated with the set of coherent joint transmission indexes. According to some example embodiments, the set of coherent joint transmission services may include the network element and one or more of the at least one other network elements having coherent joint transmission capabilities with which a connection is to be established. The apparatus may also include means for synchronizing with the network element and one or more of the at least one other network element. According to other example embodiments, a non-transitory computer-readable medium may be encoded with instructions that, when executed in hardware, perform a method. The method may include receiving, from a network element and at least