CN-122002605-A - Random access method and device, communication equipment, storage medium and program product

CN122002605ACN 122002605 ACN122002605 ACN 122002605ACN-122002605-A

Abstract

The application discloses a random access method, a device, communication equipment, a storage medium and a program product, wherein the method comprises the steps of determining a first PRACH (physical random access channel) set and/or a first preamble set at least according to a first index, wherein the first PRACH set comprises at least one PRACH, the first preamble set comprises at least one preamble, the at least one PRACH (physical random access channel) and/or the at least one preamble are used for a random access flow of UE (user equipment), the first index is related to a second index, or the first index is related to at least one of timing information of the second index and SSB (single-access channel) and SSB index, and the second index is related to at least one of the position of the UE and wave position information related to the UE.

Inventors

KE TING
ZHENG YI
LIU YONGCHANG
QIN WEI
HU NAN
LI NAN
DING HAIYU
HUANG YUHONG

Assignees

中国移动通信有限公司研究院
中国移动通信集团有限公司

Dates

Publication Date: 20260508
Application Date: 20241107

Claims (20)

1. A random access method, the method comprising: Determining a first physical random access channel time PRACH (physical random access channel) timing set and/or a first preamble set at least according to a first index, wherein the first PRACH timing set comprises at least one PRACH timing, and the first preamble set comprises at least one preamble; The first index is related to a second index, or the first index is related to at least one of timing information of the second index and SSB index, wherein the second index is related to at least one of position of UE and wave position information related to the UE.
2. The method of claim 1, wherein the second index is related to at least one of a location of the UE, and wave position information related to the UE, and comprises at least one of: The second index is at least related to the position of the UE, and comprises a number of the second index which is a first area, wherein the UE belongs to the first area, or a number of a first reference point which is related to the position of the UE; The second index is at least related to wave bit information related to the UE, and comprises a number of the first wave bit, wherein the UE belongs to the first wave bit.
3. The method according to claim 2, wherein the method further comprises: Determining at least one of the first area and the first reference point according to the position of the UE and network parameters; and/or determining the first wave bit according to wave bit information related to the UE and network parameters; wherein the network parameters include at least one of: A reference location for determining a center point of the topological area; a first distance for determining a topology region-related distance; a first number for determining a total number of second regions or second reference points or second wave positions in the topological area; the first angle is used for determining the angular rotation offset of the coordinate axes of the topological area relative to a reference coordinate system; and a first parameter for determining a reference coordinate system.
4. The method of claim 3, wherein the step of, The network parameters are associated with SSBs; or the network parameter is cell-related; or the network parameter is associated with a set of SSBs, wherein the set of SSBs includes at least one SSB within one field.
5. A method according to claim 3, further comprising one of: Determining the first area according to the position of the UE and the network parameters, wherein the determining of the first area comprises determining at least one second area according to the network parameters, and any two second areas in the second areas are not overlapped in the case of the second areas; Determining a first reference point according to the position of the UE and the at least one second reference point, wherein the first reference point is the second reference point closest to the UE in the at least one second reference point; The method comprises the steps of determining at least one second wave bit according to network parameters, wherein any two second wave bits in the second wave bits are not overlapped in the case of the second wave bits, and determining the first wave bit according to the position of the UE and the at least one second wave bit, wherein the first wave bit is the second wave bit to which the UE belongs.
6. The method of claim 5, further comprising at least one of: determining a topology of the second region or the second wave bits by protocol conventions or network configurations, the topology of the second region or the second wave bits being related to the first number; determining a location of the second reference point by protocol conventions or network configurations, the location of the second reference point being related to the first number; Determining the first angle through protocol conventions; determining the coordinate axis of the topological area as the coordinate axis of the reference coordinate system; determining the reference coordinate system through protocol conventions; the reference coordinate system is at least one of a ground coordinate system, a projection of a U axis or a V axis on the ground, wherein the X axis points to latitude or longitude, and the U axis or the V axis points to the UV-plane.
7. The method of claim 1, wherein the first index is related to a second index, or the first index is related to at least one of timing information of the second index and SSB, SSB index, comprising: the first index is the second index; Or the first index is determined according to the second index and the SSB index; Or the first index is determined according to the timing information of the second index and SSB; Or the first index is determined according to the timing information of the second index, the SSB index and the SSB.
8. The method according to claim 1, wherein the determining the first set of physical random access channel occasions PRACH occision and/or the first set of preambles at least from the first index comprises: and determining a first PRACH occasin set according to at least the first index, wherein the first PRACH occasin set comprises any one of the following components: Determining a first PRACH occipital according to the first index and a second PRACH occipital, wherein the second PRACH occipital comprises at least one PRACH occipital, the first PRACH occipital is a subset of the second PRACH occipital; Determining a third PRACH occlusions set according to the first index and the second PRACH occlusions set, wherein the second PRACH occlusions set comprises at least one fourth PRACH occlusions set, the third PRACH occlusions set is a subset of the second PRACH occlusions set, determining a first PRACH occlusions set according to at least the first index and the third PRACH occlusions set, wherein the third PRACH occlusions set comprises at least one PRACH occlusions set, the first PRACH occlusions set comprises at least one PRACH occlusions set, and the first PRACH occlusions set is a subset of the third PRACH occlusions set; wherein the second PRACH occalasion set is determined according to at least one of timing information of the first system message/the first higher layer signaling, SSB index, SSB; And/or determining a first preamble set according to at least the first index, wherein the first preamble set comprises at least one preamble according to the first index and a second preamble set, the first preamble set comprises at least one preamble, the first preamble set is a subset of the second preamble set, and the second preamble set is determined according to at least one of a pre-agreement, a second system message, an SSB index and the first PRACH (physical channel) coverage set.
9. The method of claim 8, wherein the second PRACH occision set is determined according to at least one of first system message/first higher layer signaling, SSB index, SSB timing information, comprising any one of: The second PRACH occalasion set is determined according to the first system message/first higher layer signaling; the second PRACH occalasion set is determined according to the first system message/first higher layer signaling and SSB index; The second PRACH occasin set is determined according to the timing information of the first system message/first higher layer signaling, SSB index, and SSB.
10. The method of claim 8, wherein the second preamble set is determined according to at least one of a pre-agreement, a second system message, an SSB index, a first PRACH occalasion set, comprising: the second preamble set is a third preamble set; Or the second preamble set is determined according to at least one third preamble set, and the third preamble set is related to at least one PRACH occalation in the first PRACH occalation set; Wherein, the third preamble set is determined according to a preset convention; or the third preamble set is determined according to the second system message; or the third preamble set is determined according to the second system message and the SSB index.
11. The method of claim 8, wherein the method further comprises: Determining a second object set according to the first index and the first object set, wherein the first object set comprises at least one third object, the second object set comprises at least one third object, and the second object set is a subset of the first object set; the first object set is a second PRACH occipital set, the second object set is a first PRACH occipital set, the third object is a PRACH occipital set, or the first object set is a second PRACH occipital set, the second object set is a third PRACH occipital set, the third object is a fourth PRACH occipital set, or the first object set is a third PRACH occipital set, the second object set is a first PRACH occipital set, the third object is a third PRACH occipital, or the first object set is a second preamble set, the second object set is a first preamble set, and the third object is a preamble set; Comprising any one of the following: Determining a corresponding relation between the value of the first index and at least one third object in the first object set according to a preset or high-level configuration, and determining a second object set related to the first index according to the corresponding relation, wherein the second object set comprises at least one third object corresponding to the value of the first index; Determining a first corresponding relation between the value of the first index and at least one third object set in the first object set, determining a second object set related to the first index according to the first corresponding relation, wherein the second object set comprises at least one third object corresponding to the value of the first index, the value v of the first index has N different values, the first object set comprises M third objects, and the first corresponding relation satisfies at least one of the following: If M is equal to N, the N values of the first index and the M third objects have a one-to-one mapping relation, wherein M and N are positive integers; If M/N is an integer, associating M/N third objects with the value of each first index; if M is greater than N, the values of the first index of the previous mod (M, N) are associated The third object, the post N-mod (M, N) first index value association Or the first N-1 first index value association The third object and the last first index are related to the value Or the first N-1 first index value association The third object and the last first index are related to the value A third object; If M is smaller than N, a third object is associated with the value of at least one first index, wherein the previous mod (N, M) third objects in the M third objects are associated with The value of the first index, and M-mod (N, M) third objects are related The value of the first index.
12. The method of claim 8, comprising any one of: if the first index is associated with at least one PRACH occalasion, the time domain resources of the at least one PRACH occalasion are the same; The first preamble set comprises one or more of a Group A preamble, a Group B preamble, a non-competitive preamble and a preamble of an SI request.
13. The method of claim 1, wherein the step of determining the position of the substrate comprises, For PRACH occipital, when a first condition is not satisfied, the PRACH occipital is not an effective PRACH occipital, wherein the first condition is that the PRACH occipital is completely overlapped with a first time domain resource set; Or for PRACH occision, if the PRACH occision completely overlaps or partially overlaps with a time domain resource other than the first set of time domain resources, the PRACH occision is not a valid PRACH occision; The first time domain resource set comprises time domain resources corresponding to second channel/signal transmission, wherein the second channel/signal comprises at least one of SSB, PDCCH related to Type0-PDCCH CSS, PDCCH related to Type0A-PDCCH CSS and PDSCH carrying system information.
14. A random access method, the method comprising: receiving a preamble sent by UE; And determining at least one of a first index, a second index, an interval where the position of the UE is located, and wave position information related to the UE according to the preamble and/or PRACH occassion where the preamble is located, and/or determining transmission or reception of a first channel or a first signal, wherein the first channel is at least one of a physical downlink control channel PDCCH, a physical downlink shared channel PDSCH, a physical uplink shared channel PUSCH and a physical uplink control channel PUCCH, and the first signal is at least one of a demodulation reference signal DMRS, a phase tracking reference signal PT-RS, a channel state information reference signal CSI-RS, a positioning reference signal PRS and a sounding reference signal SRS.
15. The method of claim 14, wherein the step of providing the first information comprises, The second index is the number of a first area, wherein the UE belongs to the first area; or the second index is the number of a first reference point, wherein the first reference point is related to the position of the UE; Or the second index is the number of the first wave bit, wherein the UE belongs to the first wave bit.
16. The method of claim 15, wherein at least one of the first region, the first reference point, and the first wave position is related to a network parameter, wherein the network parameter comprises at least one of: A reference location for determining a center point of the topological area; a first distance for determining a topology region-related distance; a first number for determining a total number of second regions or second reference points or second wave positions in the topological area; the first angle is used for determining the angular rotation offset of the coordinate axes of the topological area relative to a reference coordinate system; and a first parameter for determining a reference coordinate system.
17. The method of claim 16, wherein the step of determining the position of the probe comprises, The network parameters are associated with SSBs; or the network parameter is cell-related; or the network parameter is associated with a set of SSBs, wherein the set of SSBs includes at least one SSB within one field.
18. The method of claim 16, further comprising at least one of: the topology of the second region or the second wave bits is protocol-agreed or network-configured, the topology of the second region or the second wave bits being related to the first number; The position of the second reference point is agreed by a protocol or configured by a network, and the position of the second reference point is related to the first number; The first angle is agreed by a protocol; determining the coordinate axis of the topological area as the coordinate axis of the reference coordinate system; the reference coordinate system is agreed by a protocol; the reference coordinate system is at least one of a ground coordinate system, a projection of a U axis or a V axis on the ground, wherein the X axis points to latitude or longitude, and the U axis or the V axis points to the UV-plane.
19. The method of claim 14, wherein the step of providing the first information comprises, The first index is the second index; Or the first index is determined according to the second index and the SSB index; Or the first index is determined according to the timing information of the second index and SSB; Or the first index is determined according to the timing information of the second index, the SSB index and the SSB.
20. The method according to claim 14, wherein the preamble belongs to a first preamble set and/or PRACH occision where the preamble is located belongs to a first PRACH occision set; the determining the first index according to the preamble and/or PRACH occassion where the preamble is located includes: Determining a first index corresponding to the first PRACH occipital set according to a second PRACH occipital set, wherein the association between the first index and the first PRACH occipital set comprises any one of the following: Determining a first PRACH occipital according to the first index and a second PRACH occipital, wherein the second PRACH occipital comprises at least one PRACH occipital, the first PRACH occipital is a subset of the second PRACH occipital; Determining a third PRACH occlusions set according to the first index and the second PRACH occlusions set, wherein the second PRACH occlusions set comprises at least one fourth PRACH occlusions set, the third PRACH occlusions set is a subset of the second PRACH occlusions set, determining a first PRACH occlusions set according to at least the first index and the third PRACH occlusions set, wherein the third PRACH occlusions set comprises at least one PRACH occlusions set, the first PRACH occlusions set comprises at least one PRACH occlusions set, and the first PRACH occlusions set is a subset of the third PRACH occlusions set; wherein the second PRACH occalasion set is determined according to at least one of timing information of the first system message/the first higher layer signaling, SSB index, SSB; and/or determining a first index corresponding to the first preamble set according to a second preamble set, wherein the association between the first index and the first preamble set comprises: Determining a first preamble set according to the first index and a second preamble set, wherein the second preamble set comprises at least one preamble, the first preamble set is a subset of the second preamble set, and the second preamble set is determined according to at least one of a preset, a second system message, an SSB index and the first PRACH occipital set.

Description

Random access method and device, communication equipment, storage medium and program product Technical Field The present application relates to the field of wireless communications technologies, and in particular, to a random access method and apparatus, a communication device, a storage medium, and a program product. Background Due to the limited processing power on board the low orbit satellite, the satellite cannot cover all the spot wave positions on the ground at the same time, and only a limited wave position can be illuminated at the same time. To ensure that all users of the point wave bits have an opportunity to access the satellite network, the satellite needs to periodically traverse all the point wave bits and at least need to transmit a common control signal/channel, and needs to receive a Physical Random access channel (Physical Random ACCESS CHANNEL, PRACH) transmitted by a User Equipment (UE), so that the base station determines whether there is a User requiring access at the point wave bit, and establishes uplink timing synchronization for the User. For a typical satellite capability, in order to meet 100% coverage, the synchronization signal/physical broadcast channel Block (Synchronization Signal/PBCH Block, SSB) retransmission cycle needs to be greatly expanded, but greatly increasing the SSB retransmission cycle may cause a certain standardization effect and increase the hardware complexity at the UE side. Thus, SSB repetition transmission periods may be reduced by increasing the width of the active beam (i.e., SATELLITE BEAM SIZE EXTENSION) transmitting the common control signal/channel. Transmitting the generic control signal/channel with a wide beam may reduce SSB repetition transmission period compared to narrow beam transmission, but may also present some new problems. Disclosure of Invention The application provides a random access method and device, communication equipment, a computer readable storage medium and a computer program product. The random access method provided by the application comprises the following steps: Determining a first PRACH timing (occalation) set and/or a first preamble (preamble) set according to at least a first index (index), wherein the first PRACH occalation set comprises at least one PRACH occalation, and the first preamble set comprises at least one preamble; The first index is related to a second index, or the first index is related to at least one of timing information of the second index and SSB index, wherein the second index is related to at least one of position of UE and wave position information related to the UE. In some embodiments, the second index is related to at least one of a location of the UE, and wave position information related to the UE, including at least one of: The second index is at least related to the position of the UE, and comprises a number of the second index which is a first area, wherein the UE belongs to the first area, or a number of a first reference point which is related to the position of the UE; The second index is at least related to wave bit information related to the UE, and comprises a number of the first wave bit, wherein the UE belongs to the first wave bit. In some embodiments, the method further comprises: Determining at least one of the first area and the first reference point according to the position of the UE and network parameters; and/or determining the first wave bit according to wave bit information related to the UE and network parameters; wherein the network parameters include at least one of: A reference location for determining a center point of the topological area; a first distance for determining a topology region-related distance; a first number for determining a total number of second regions or second reference points or second wave positions in the topological area; the first angle is used for determining the angular rotation offset of the coordinate axes of the topological area relative to a reference coordinate system; and a first parameter for determining a reference coordinate system. In some embodiments, the network parameter is related to SSB; or the network parameter is cell-related; or the network parameter is associated with a set of SSBs, wherein the set of SSBs includes at least one SSB within one field. In some embodiments, the method further comprises one of: Determining the first area according to the position of the UE and the network parameters, wherein the determining of the first area comprises determining at least one second area according to the network parameters, and any two second areas in the second areas are not overlapped in the case of the second areas; Determining a first reference point according to the position of the UE and the at least one second reference point, wherein the first reference point is the second reference point closest to the UE in the at least one second reference point; The method comprises the steps of determining at least one second