Signal Transmission Method, Device, and System

Abstract

The present disclosure relates to the technical field of communications, and relates to a signal transmission method, apparatus, and system. This transmission method is to configure a bundling relationship between different transmission occasions, where a plurality of transmission occasions having the bundling relationship are used for repeated transmission of the same signal, including configuring the bundling relationship, and sending the bundling relationship to a UE so that the UE determines a transmission occasion for signal transmission according to the bundling relationship.

Description

Technical Field

[0001] Cross - reference to Related Applications This application is based on Chinese Application No. 202210654754.3 filed on June 10, 2022, the entire disclosure of which is incorporated herein by reference, and claims the benefit of its priority.

[0002] This disclosure relates to the field of communication technologies, and in particular, to a signal transmission method, a signal transmission device, a signal transmission system, and a non - volatile computer - readable storage medium.

Background Art

[0003] According to the 3GPP NR Release 17 protocol, a UE (User Equipment) transmits a preamble on a PRACH (Physical Random Access Channel) transmission occasion indicated by a base station.

[0004] In related technologies, when a UE determines that its PRACH transmission has failed, the UE needs to repeat a new PRACH.

Summary of the Invention

Means for Solving the Problems

[0005] According to some embodiments of the present disclosure, a signal transmission method on the network side is provided. This signal transmission method includes configuring a bundling relationship between different transmission occasions, where a plurality of transmission occasions having the bundling relationship are used for repeated transmission of the same signal, and sending the bundling relationship to a UE so that the UE can determine a transmission occasion for signal transmission based on the bundling relationship.

[0006] In some embodiments, configuring a bundling relationship between different transmission occasions includes configuring the bundling relationship according to at least one of a time-domain position and a frequency-domain position corresponding to each transmission occasion among a plurality of transmission occasions and an SSB (Synchronization Signal Block) associated with each transmission occasion.

[0007] In some embodiments, configuring a bundling relationship between different transmission occasions includes bundling transmission occasions associated with the same SSB.

[0008] In some embodiments, bundling transmission occasions associated with the same SSB includes bundling all or part of a first transmission occasion, where the first transmission occasion corresponds to the same time-domain position and is associated with the same SSB.

[0009] In some embodiments, bundling transmission occasions associated with the same SSB includes bundling all or part of a second transmission occasion, where the second transmission occasion corresponds to the same frequency-domain position and is associated with the same SSB.

[0010] In some embodiments, configuring a bundling relationship between different transmission occasions includes configuring a bundling relationship between different transmission occasions at the same time granularity.

[0011] In some embodiments, the time granularity includes a time slot, a subframe, or a system frame.

[0012] In some embodiments, this transmission method further includes performing joint detection on signals received on different transmission occasions having a bundling relationship, scrambling a scheduled RAR (Random Access Response) according to the result of the joint detection, and sending the scrambled RAR to the UE so that the UE can determine whether the signal transmission of the UE is successful based on whether the scrambling of the scrambled RAR can be decoded.

[0013] In some embodiments, performing joint detection on signals received on different transmission occasions having a bundling relationship includes performing joint preamble detection on signals received on different transmission occasions having a bundling relationship.

[0014] In some embodiments, scrambling a scheduled random access response (RAR) according to the result of the joint detection includes calculating a RA-RNTI (Random Access Radio Network Temporary Identifier) based on the result of the joint detection, scrambling the DCI 1_0 (Downlink Control Information 1_0) of the scheduled RAR, and adding a RAPID (Random Access Preamble Identifier) corresponding to the RA-RNTI to the scrambled RAR.

[0015] In some embodiments, calculating a RA-RNTI based on the result of the joint detection includes calculating the RA-RNTI based on the time domain position and the frequency domain position of one of the different transmission occasions having a bundling relationship in response to detecting that the energy of the preamble sequence is greater than a detection threshold.

[0016] In some embodiments, the one transmission occasion includes the transmission occasion having the smallest index value or the largest index value among different transmission occasions having a bundling relationship.

[0017] In some embodiments, the transmission occasion includes a PRACH transmission occasion.

[0018] According to other embodiments of the present disclosure, a signal transmission method on the user side is provided. This signal transmission method includes receiving a bundling relationship between different transmission occasions configured on the network side, where the plurality of transmission occasions having the bundling relationship are used for repeated transmission of the same signal, and determining a transmission occasion for signal transmission based on the bundling relationship.

[0019] In some embodiments, determining a transmission occasion for signal transmission based on the bundling relationship includes performing repeated transmission of the signal on different transmission occasions that have the bundling relationship and are associated with the SSB selected by the UE during cell search.

[0020] In some embodiments, determining a transmission occasion for signal transmission based on the bundling relationship includes determining beams used for signal transmission on different transmission occasions based on the bundling relationship.

[0021] In some embodiments, the bundling relationship includes a first bundling relationship and a second bundling relationship. Determining the beams used for signal transmission on different transmission occasions based on the bundling relationship includes performing repeated transmission of signals using a first beam on different transmission occasions having the first bundling relationship, and performing repeated transmission of signals using a second beam on different transmission occasions having the second bundling relationship, where the first beam is different from the second beam, or performing repeated transmission of signals using different beams on different transmission occasions having the first bundling relationship.

[0022] In some embodiments, this transmission method further includes descrambling the scrambled RAR sent from the network side, and determining whether signal transmission is successful based on whether the scrambled RAR can be descrambled.

[0023] In some embodiments, descrambling the scrambled RAR sent from the network side includes determining whether one RA-RNTI or multiple RA-RNTIs are used to descramble the DCI 1_0 of the RAR based on whether repeated transmission of signals is to be performed, and determining that signal transmission is successful in response to correctly identifying the RAPID in the RAR scheduled by the DCI 1_0.

[0024] In some embodiments, determining whether one RA-RNTI or multiple RA-RNTIs are used to de-scramble the DCI 1_0 of the RAR based on whether repeated transmission of a signal is performed includes using one RA-RNTI to de-scramble the DCI 1_0 of the RAR in response to non-performance of repeated transmission of the signal, where the one RA-RNTI is calculated based on the time-domain position and frequency-domain position of the transmission occasion where signal transmission is performed, and using multiple RA-RNTIs to de-scramble the DCI 1_0 of the RAR in response to repeated transmission of the signal, where the multiple RA-RNTIs are based on the time-domain position and frequency-domain position of the transmission occasion where repeated transmission of the signal is performed.

[0025] According to still other embodiments of the present disclosure, a signal transmission device on the network side is provided. This signal transmission device includes a configuration unit configured to configure a bundling relationship between different transmission occasions, where the multiple transmission occasions having the bundling relationship are used for repeated transmission of the same signal, and a sending unit configured to send the bundling relationship to the UE so that the UE can determine a transmission occasion for signal transmission based on the bundling relationship.

[0026] In some embodiments, the configuration unit configures the bundling relationship according to at least one of the time-domain position and frequency-domain position corresponding to each transmission occasion among the multiple transmission occasions and the SSB associated with each transmission occasion.

[0027] In some embodiments, the configuration unit bundles the transmission occasions associated with the same SSB.

[0028] In some embodiments, the configuration unit bundles all or part of the first transmission occasions, and the first transmission occasions correspond to the same time domain position and are associated with the same SSB.

[0029] In some embodiments, the configuration unit bundles all or part of the second transmission occasions, and the second transmission occasions correspond to the same frequency domain position and are associated with the same SSB.

[0030] In some embodiments, the configuration unit configures the bundling relationship between different transmission occasions at the same time granularity.

[0031] In some embodiments, the time granularity includes time slots, subframes, or system frames.

[0032] In some embodiments, the transmission device further includes a detection unit configured to perform joint detection on signals received on different transmission occasions having a bundling relationship, and a processing unit configured to scramble the scheduled RAR based on the result of the joint detection. The sending unit sends the scrambled RAR to the UE, enabling the UE to determine whether the signal transmission of the UE is successful based on whether the scramble of the scrambled RAR can be decoded.

[0033] In some embodiments, the detection unit performs joint preamble detection on signals received on different transmission occasions having a bundling relationship.

[0034] In some embodiments, the processing unit calculates the RA-RNTI based on the result of the joint detection, scrambles the DCI 1_0 of the scheduled RAR, and adds the RAPID corresponding to the RA-RNTI to the scrambled RAR.

[0035] In some embodiments, in response to detecting that the energy of the preamble sequence is greater than a detection threshold, the processing unit calculates the RA-RNTI based on the time-domain position and the frequency-domain position of one of the different transmission occasions having a bundling relationship.

[0036] In some embodiments, the one transmission occasion includes the transmission occasion having the smallest index value or the transmission occasion having the largest index value among the different transmission occasions having a bundling relationship.

[0037] In some embodiments, the transmission occasion includes a PRACH transmission occasion.

[0038] According to still other embodiments of the present disclosure, a signal transmission device is provided. The signal transmission device includes a receiving unit for receiving a bundling relationship between different transmission occasions configured on the network side, where the plurality of transmission occasions having the bundling relationship are used for repeated transmission of the same signal, and a transmitting unit for determining a transmission occasion for signal transmission based on the bundling relationship.

[0039] In some embodiments, the transmitting unit performs repeated transmission of a signal on different transmission occasions that have a bundling relationship and are associated with an SSB selected by a UE during cell search.

[0040] In some embodiments, the transmitting unit determines a beam used for signal transmission on different transmission occasions based on the bundling relationship.

[0041] In some embodiments, the bundling relationship includes a first bundling relationship and a second bundling relationship. The transmitting unit performs repeated transmission of a signal using a first beam on different transmission occasions having the first bundling relationship, and performs repeated transmission of the signal using a second beam on different transmission occasions having the second bundling relationship, where the first beam is different from the second beam. Alternatively, the transmitting unit performs repeated transmission of a signal using different beams on different transmission occasions having the first bundling relationship.

[0042] In some embodiments, this transmitting apparatus further includes a processing unit configured to descramble the scrambled RAR sent from the network side, and a determination unit configured to determine whether signal transmission is successful based on whether the scrambled RAR can be descrambled.

[0043] In some embodiments, the processing unit determines whether one RA-RNTI or a plurality of RA-RNTIs are used to descramble the DCI 1_0 of the RAR based on whether repeated transmission of the signal is performed, and the determination unit determines that signal transmission is successful in response to correctly identifying the RAPID in the RAR scheduled by the DCI 1_0.

[0044] In some embodiments, in response to the repeated transmission of the signal not being performed, the processing unit uses one RA-RNTI to descramble the DCI 1_0 of the RAR, where the one RA-RNTI is calculated based on the time-domain position and the frequency-domain position of the transmission occasion on which signal transmission is performed. In response to the repeated transmission of the signal being performed, the processing unit uses a plurality of RA-RNTIs to descramble the DCI 1_0 of the RAR, where the plurality of RA-RNTIs are calculated based on the time-domain position and the frequency-domain position of the transmission occasion on which the repeated transmission of the signal is performed.

[0045] According to still other embodiments of the present disclosure, a signal transmission system is provided. This signal transmission system includes a network-side device configured to implement the signal transmission method on the network side according to any one of the above embodiments, and a user device configured to implement the signal transmission method on the user side according to any one of the above embodiments.

[0046] According to still other embodiments of the present disclosure, a signal transmission apparatus is provided. This signal transmission apparatus includes a memory and a processor coupled to the memory. The processor is configured to implement the signal transmission method on the network side or the signal transmission method on the user side according to any one of the above embodiments based on instructions stored in the memory.

[0047] According to still other embodiments of the present disclosure, a non-volatile computer-readable storage medium storing a computer program is provided. When this computer program is executed by a processor, it implements the signal transmission method on the network side or the signal transmission method on the user side according to any one of the above embodiments.

[0048] According to still other embodiments of the present disclosure, a computer program is provided. This computer program includes instructions that cause a processor to implement the signal transmission method on the network side or the signal transmission method on the user side according to any one of the above embodiments when executed by the processor.

[0049] The accompanying drawings, which are incorporated herein and form a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0050] The present disclosure will be more clearly understood from the following detailed description with reference to the accompanying drawings.

Brief Description of the Drawings

[0051]

Figure 1

Figure 2a

Figure 2b

Figure 2c

Figure 3

Figure 4

Figure 5a

Figure 5b

Figure 6

Figure 7

Figure 8

DETAILED DESCRIPTION OF THE INVENTION

[0052] Next, various exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the relative arrangements, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of the present disclosure.

[0053] At the same time, it should also be understood that, for the sake of ease of explanation, the dimensions of various parts shown in the drawings are not drawn in actual proportions.

[0054] The following description of at least one exemplary embodiment is in fact only illustrative and is in no way intended as a limitation on the present disclosure, its application, or its use.

[0055] Although techniques, methods, and devices known to those of ordinary skill in the art may not be discussed in detail, these techniques, methods, and devices should, where appropriate, be considered to be part of this specification.

[0056] Of all the examples illustrated and discussed in this specification, any specific values should be construed as illustrative only and not as limitations. Thus, other examples of exemplary embodiments may have different values.

[0057] Note that in the accompanying drawings, like reference numerals and letters indicate like items, and after an item is defined in the drawings, it need not be discussed further in the accompanying drawings.

[0058] The UE can calculate the corresponding RA-RNTI value based on the time-frequency position of the PRACH transmission occasion for sending the preamble. The UE listens for the PDCCH within the RAR time window. If the UE successfully descrambles and detects DCI 1_0 using the RA-RNTI and can identify the RAPID in the RAR information scheduled by the DCI, the UE considers the PRACH transmission to be successful.

[0059] The inventors of the present disclosure have found that the following problem, namely, the problem that due to the lack of support for repeated transmission of the PRACH, additional delay is added and the signal coverage becomes poor, exists in the related art.

[0060] In view of this, the present disclosure proposes a technical solution for signal transmission that supports repeated transmission of signals, thereby reducing delay and improving signal coverage.

[0061] As described above, the current protocol version does not support repeated transmission of the PRACH. Therefore, if the UE considers that the PRACH transmission has failed, the UE needs to resend a new PRACH, resulting in additional delay. In addition, in the case of high-frequency bands, the PRACH is a potentially coverage-limited channel, and thus it is necessary to improve the coverage performance of the PRACH.

[0062] In view of the above technical problems, the present disclosure proposes a technical solution for resource configuration for repeated transmission of the PRACH. This solution facilitates the enhanced UE to perform multi-beam repeated transmission of the PRACH, thereby improving the coverage performance of the PRACH.

[0063] For example, the technical solution of the present disclosure can be realized through the following embodiments.

[0064] FIG. 1 shows a flowchart of a signal transmission method on the network side according to some embodiments of the present disclosure.

[0065] As shown in FIG. 1, in step 110, a bundling relationship between different transmission occasions is configured, and a plurality of transmission occasions having the bundling relationship are used for repeated transmission of the same signal. For example, the transmission occasion includes a PRACH transmission occasion. For example, the transmission occasion may be an RO (Random access channel Occasion). A plurality of available ROs can be bundled as an RO set, and the RO set is used for multi-PRACH transmission that may include repeated transmission of the same signal.

[0066] For example, the network side can configure the bundling relationship between PRACH transmission occasions via RRC (Radio Resource Control) signaling.

[0067] In some embodiments, the bundling relationship is configured according to at least one of a time-domain position and a frequency-domain position corresponding to each transmission occasion among the transmission occasions, and an SSB associated with each transmission occasion. For example, transmission occasions associated with the same SSB are bundled together.

[0068] For example, all or part of the first transmission occasions are bundled together, and the first transmission occasions correspond to the same time-domain position and are associated with the same SSB.

[0069] For example, all or part of the second transmission occasions are bundled together, and the second transmission occasions correspond to the same frequency-domain position and are associated with the same SSB.

[0070] For example, the bundling relationship between different PRACH transmission occasions includes at least one of the following. That is, no bundling relationship; a bundling relationship between some or all of the PRACH transmission occasions that are in the same time-domain symbol position and are associated with the same SSB; a bundling relationship between some or all of the PRACH transmission occasions that are in the same frequency-domain position and are associated with the same SSB; a bundling relationship between PRACH transmission occasions that are in some or all of the time-domain symbol positions or some or all of the frequency-domain positions and are associated with the same SSB.

[0071] FIGS. 2a to 2c show schematic diagrams of the bundling relationship between transmission occasions according to some embodiments of the present disclosure.

[0072] As shown in FIG. 2a, a bundling relationship is formed between some or all of the PRACH transmission occasions that are in the same time-domain symbol position and are associated with the same SSB.

[0073] For example, PRACH transmission occasions #0 and #2 are associated with SSB #0 and are in the same time domain position, and these transmission occasions have a bundling relationship. PRACH transmission occasions #1 and #3 are associated with SSB #1 and are in the same time domain position, and these transmission occasions have a bundling relationship. PRACH transmission occasions #8 and #10 are associated with SSB #0 and are in the same time domain position, and these transmission occasions have a bundling relationship. PRACH transmission occasions #9 and #11 are associated with SSB #1 and are in the same time domain position, and these transmission occasions have a bundling relationship.

[0074] In addition, there is no bundling relationship among PRACH transmission occasions #4 to #7.

[0075] As shown in Figure 2b, a bundling relationship is formed among some or all of the PRACH transmission occasions that are in the same frequency domain position and are associated with the same SSB.

[0076] For example, PRACH transmission occasions #0 and #4 are associated with SSB #0 and are in the same frequency domain position, and these transmission occasions have a bundling relationship. PRACH transmission occasions #1 and #5 are associated with SSB #1 and are in the same frequency domain position, and these transmission occasions have a bundling relationship. PRACH transmission occasions #2 and #6 are associated with SSB #0 and are in the same frequency domain position, and these transmission occasions have a bundling relationship. PRACH transmission occasions #3 and #7 are associated with SSB #1 and are in the same frequency domain position, and these transmission occasions have a bundling relationship.

[0077] In addition, there is no bundling relationship among PRACH transmission occasions #8 to #11.

[0078] As shown in FIG. 2c, a bundling relationship is formed among some or all of the time domain symbols and some or all of the frequency domain positions and among PRACH transmission occasions associated with the same SSB.

[0079] For example, PRACH transmission occasions #0, #4, #8, #2, #6, #10 are associated with SSB #0, and these transmission occasions have a bundling relationship. PRACH transmission occasions #1, #5, #9, #3, #7, #11 are associated with SSB #1, and these transmission occasions have a bundling relationship.

[0080] In some embodiments, a bundling relationship is configured among different transmission occasions at the same time granularity. For example, the time granularity includes a time slot, a subframe, or a system frame.

[0081] In some embodiments, the bundling relationship is configured only for PRACH transmission occasions at the same time granularity. For example, in response to the time granularity being a time slot, there is no bundling relationship among PRACH transmission occasions that cross time slots.

[0082] For example, the time granularity at which a bundling relationship can be formed among PRACH transmission occasions is at least one of a time slot, a subframe, and a system frame.

[0083] After the bundling relationship is configured, signal transmission can be performed through the remaining steps of FIG. 1.

[0084] In step 120, the bundling relationship is sent to the UE, enabling the UE to determine a transmission occasion for signal transmission based on the bundling relationship.

[0085] In some embodiments, joint detection is performed on signals received on different transmission occasions having a bundling relationship. Based on the result of the joint detection, the scheduled RAR is scrambled. The scrambled RAR is sent to the UE, enabling the UE to determine whether the UE's signal transmission was successful based on whether the scrambling of the scrambled RAR can be decoded.

[0086] For example, the network side performs joint PRACH detection on PRACH transmissions having the same bundling relationship based on the bundling relationship between PRACH transmission occasions, calculates the RA-RNTI based on the result of the PRACH detection, scrambles the DCI 1_0 of the scheduled RAR, and places the corresponding RAPID in the RAR information.

[0087] In some embodiments, joint preamble detection is performed on signals received on different transmission occasions having a bundling relationship.

[0088] In some embodiments, the RA-RNTI is calculated according to the result of the joint detection, the DCI 1_0 of the scheduled RAR is scrambled, and the RAPID corresponding to the RA-RNTI is added to the scrambled RAR.

[0089] For example, the network side performs a joint process on the signals received on PRACH transmission occasions having the same bundling relationship to perform preamble detection, and calculates the corresponding RA-RNTI value based on the result of the preamble detection.

[0090] In some embodiments, in response to detecting that the energy of the preamble sequence is greater than a detection threshold, the RA-RNTI is calculated based on the time-domain position and the frequency-domain position of one of the different transmission occasions having a bundling relationship.

[0091] For example, in response to detecting that the energy of a preamble sequence is greater than a detection threshold, a RA-RNTI value is calculated based on the time resource position and the frequency resource position of a specified PRACH transmission occasion among PRACH transmission occasions having the same bundling relationship. A corresponding RAPID is added to the RAR information.

[0092] In some embodiments, the one transmission occasion includes a transmission occasion having the smallest index value or the largest index value among different transmission occasions having a bundling relationship. For example, the transmission occasion includes a PRACH transmission occasion.

[0093] For example, the specified PRACH transmission occasion may include a PRACH transmission occasion having the smallest index value, a PRACH transmission occasion having the largest index value, or any PRACH transmission occasion.

[0094] In the above embodiments, the network side configures a bundling relationship among a plurality of transmission occasions, and the UE performs repeated transmission of signals using the plurality of bundled transmission occasions. In this way, it is possible to support repeated transmission of signals, thus reducing delay and improving signal coverage.

[0095] FIG. 3 shows a flowchart of a signal transmission method on the user side according to some embodiments of the present disclosure.

[0096] As shown in FIG. 3, in step 310, a bundling relationship among different transmission occasions configured by the network side is received, and a plurality of transmission occasions having the bundling relationship are used for repeated transmission of the same signal.

[0097] In step 320, a transmission occasion for signal transmission is determined based on the bundling relationship. For example, the UE performs PRACH transmission or repeated PRACH transmission based on the bundling relationship configured on the network side.

[0098] In some embodiments, transmission occasions having a bundling relationship are bundled as a set of transmission occasions. Repeated transmission of signals for the same signal is performed using one or more sets of transmission occasions having a bundling relationship.

[0099] For example, transmission occasions #0 and #2 have a first bundling relationship and the signal needs to be repeated twice. In this case, the signal can be repeated twice using transmission occasions #0 and #2.

[0100] For example, transmission occasions #0 and #2 have a first bundling relationship, transmission occasions #8 and #10 have a second bundling relationship, and the signal needs to be repeated four times. In this case, the signal can be repeated four times using transmission occasions #0, #2, #8, and #10.

[0101] In some embodiments, repeated transmission of the same signal is performed using some or all of the transmission occasions in a set of transmission occasions having a bundling relationship.

[0102] For example, transmission occasions #0, #2, #8, #10 have a bundling relationship and the signal needs to be repeated three times. In this case, the signal can be repeated three times using three of the transmission occasions #0, #2, #8, and #10.

[0103] In some embodiments, for a UE that does not support repeated transmission of the PRACH, the PRACH transmission is directly performed based on the network-side configuration without being affected by the bundling relationship of the PRACH transmission occasion. For example, the network-side configuration includes one or more of the time-domain position and frequency-domain position of the PRACH transmission occasion, the preamble index available for PRACH transmission, the subcarrier spacing of the preamble, etc.

[0104] In some embodiments, for a UE that supports repeated transmission of the PRACH, in response to no bundling relationship between PRACH transmission occasions, only the PRACH transmission without repeated PRACH transmission is performed based on the above network-side configuration. In response to the PRACH transmission occasion having a bundling relationship as described above, repeated PRACH transmission is performed on the PRACH transmission occasion having the bundling relationship.

[0105] In some embodiments, repeated transmission of a signal is performed on different transmission occasions that have a bundling relationship and are associated with an SSB selected by the UE during cell search.

[0106] For example, the UE performs transmission on a transmission occasion that has a bundling relationship and is associated with an SSB selected by the UE during cell search.

[0107] For example, as shown in Figure 2a, when the SSB index selected by the UE during cell search is #1 and the number of repeated PRACH transmissions is 4, the UE performs repeated PRACH transmission on PRACH transmission occasions #1, #3, #9, and #11.

[0108] In some embodiments, based on the bundling relationship, the beam used for signal transmission on different transmission occasions is determined.

[0109] For example, the bundling relationship includes a first bundling relationship and a second bundling relationship. On different transmission occasions having the first bundling relationship, the repeated transmission of signals is performed using the first beam, and on different transmission occasions having the second bundling relationship, the repeated transmission of signals is performed using the second beam, where the first beam is different from the second beam. Alternatively, on different transmission occasions having the first bundling relationship, the repeated transmission of signals is performed using different beams.

[0110] For example, the UE performs PRACH transmission using the same beam on PRACH transmission occasions having the same bundling relationship, and performs PRACH transmission using different beams on PRACH transmission occasions having different bundling relationships.

[0111] For example, the UE performs PRACH transmission using different beams on PRACH transmission occasions having the same bundling relationship.

[0112] In some embodiments, the scrambling of the scrambled RAR sent from the network side is removed. Whether the signal transmission is successful is determined based on whether the scrambling of the scrambled RAR can be removed.

[0113] For example, the UE attempts to remove the scrambling of DCI 1_0 using one or more RA-RNTIs. In response to the success of the descrambling process and the correct identification of the RAPID in the RAR information scheduled by the DCI, the UE succeeds in completing the PRACH transmission and proceeds to the subsequent random access process. In response to the failure of the descrambling process, the UE needs to repeat a new PRACH.

[0114] In some embodiments, at least one RA-RNTI is used to descramble the DCI 1_0 of the RAR. The RA-RNTI is calculated based on the time-domain position and frequency-domain position of the transmission occasion for signal transmission. In response to correctly identifying the RAPID in the RAR scheduled by the DCI 1_0, the signal transmission is successful.

[0115] For example, in the case of a UE that supports repeated transmission of the PRACH, in response to the repeated transmission of the PRACH not being performed by the UE, one RA-RNTI is used to descramble the DCI 1_0. The RA-RNTI is obtained by a calculation based on the time resource position and frequency resource position of the PRACH transmission occasion when the PRACH transmission is performed by the UE.

[0116] For example, in the case of a UE that supports repeated transmission of the PRACH, in response to the repeated transmission of the PRACH being performed by the UE, a plurality of RA-RNTIs are used to descramble the DCI 1_0. The plurality of RA-RNTIs are obtained by a calculation based on the time resource position and frequency resource position of the PRACH transmission occasion when the repeated transmission of the PRACH is performed by the UE.

[0117] FIG. 4 shows a flowchart of a signal transmission method according to some embodiments of the present disclosure.

[0118] As shown in FIG. 4, in step 410, the network side configures the bundling relationship between PRACH transmission occasions via RRC signaling.

[0119] In some embodiments, the time granularity of the bundling relationship between PRACH transmission occasions is at least one of a time slot, a subframe, and a system frame.

[0120] In some embodiments, the bundling relationship is configured only for PRACH transmission occasions within a time granularity. For example, in response to the time granularity being a time slot, there is no bundling relationship between PRACH transmission occasions that span time slots.

[0121] In some embodiments, the bundling relationship between PRACH transmission occasions includes at least one of the following. That is, no bundling relationship; a bundling relationship between some or all of the PRACH transmission occasions that are in the same time domain symbol position and associated with the same SSB; a bundling relationship between some or all of the PRACH transmission occasions that are in the same frequency domain position and associated with the same SSB; a bundling relationship between PRACH transmission occasions that are in some time domain symbol positions or some frequency domain positions and associated with the same SSB, including at least one of them.

[0122] In step 420, the UE performs PRACH transmission or repeated transmission of PRACH based on the network-side configuration.

[0123] In some embodiments, for the first type of UE, the PRACH transmission is directly performed based on the network-side configuration without being affected by the bundling relationship of the PRACH transmission occasion. The network-side configuration includes one or more of the time domain position and frequency domain position of the PRACH transmission occasion, the preamble index available for PRACH transmission, and the subcarrier spacing of the preamble. For example, the first type of UE includes a UE that does not support repeated transmission of PRACH.

[0124] In some embodiments, for the second type of UE, in response to there being no bundling relationship between PRACH transmission occasions, only PRACH transmission is performed based on the network-side configuration without repeated PRACH transmission. In response to the PRACH transmission occasion having a bundling relationship as described above, repeated PRACH transmission is performed on the PRACH transmission occasion having the bundling relationship. For example, the second type of UE includes a UE that supports repeated PRACH transmission.

[0125] In some embodiments, the UE performs transmission on a PRACH transmission occasion that has a bundling relationship and is associated with the SSB selected by the UE during cell search. For example, as shown in Figure 2a, if the SSB index selected by the UE during cell search is #1 and the number of repeated PRACH transmissions is 4, the UE performs repeated PRACH transmission on PRACH transmission occasions #1, #3, #9, and #11.

[0126] In some embodiments, the UE performs PRACH transmission using the same beam on PRACH transmission occasions having the same bundling relationship, and performs PRACH transmission using different beams on PRACH transmission occasions having different bundling relationships.

[0127] In some embodiments, the UE performs PRACH transmission using different beams on PRACH transmission occasions having the same bundling relationship.

[0128] In step 430, the network side performs joint PRACH detection for PRACH transmissions having the same bundling relationship based on the bundling relationship between PRACH transmission occasions, calculates the RA-RNTI based on the result of the PRACH detection, scrambles the DCI 1_0 of the scheduled RAR, and places the corresponding RAPID in the RAR information.

[0129] In some embodiments, the network side performs a joint process on signals received on a PRACH transmission occasion having the same bundling relationship to perform preamble detection, and calculates a corresponding RA-RNTI value based on the detection result.

[0130] In some embodiments, in response to detecting that the energy of the preamble sequence is greater than a detection threshold, an RA-RNTI value is calculated based on the time resource position and the frequency resource position of a specified PRACH transmission occasion among PRACH transmission occasions having the same bundling relationship. A corresponding RAPID is added to the RAR information.

[0131] In some embodiments, the specified PRACH transmission occasion includes the PRACH transmission occasion having the smallest index value, the PRACH transmission occasion having the largest index value, or any PRACH transmission occasion.

[0132] In step 440, the UE attempts to decrypt DCI 1_0 using one or more RA-RNTIs. In response to successful decryption and being able to correctly identify the RAPID in the RAR information scheduled by the DCI, the UE succeeds in completing the PRACH transmission and proceeds to the subsequent random access process.

[0133] In some embodiments, for a second type of UE, in response to the PRACH not being repeatedly transmitted by the UE, the scrambling of DCI 1_0 is decrypted using one RA-RNTI. The RA-RNTI is obtained by a calculation based on the time resource position and the frequency resource position of the PRACH transmission occasion when the PRACH transmission is performed by the UE.

[0134] In some embodiments, for a second type of UE, in response to the UE performing repeated transmission of a PRACH, scrambling of DCI 1_0 is released using a plurality of RA-RNTIs. The plurality of RA-RNTIs are obtained by a calculation based on the time resource position and the frequency resource position of the PRACH transmission occasion when the repeated transmission of the PRACH is performed by the UE.

[0135] FIG. 5a shows a block diagram of a signal transmission device on the network side according to some embodiments of the present disclosure.

[0136] As shown in FIG. 5a, the signal transmission device 5a includes a configuration unit 51a for configuring a bundling relationship between different transmission occasions, where a plurality of transmission occasions having a bundling relationship are used for repeated transmission of the same signal, and a transmission unit 52a for sending the bundling relationship to the UE so that the UE can determine a transmission occasion for signal transmission based on the bundling relationship.

[0137] In some embodiments, the configuration unit 51a configures a bundling relationship according to at least one of the time domain position and the frequency domain position corresponding to each transmission occasion among the transmission occasions and the SSB associated with each transmission occasion.

[0138] In some embodiments, the configuration unit 51a bundles transmission occasions associated with the same SSB.

[0139] In some embodiments, the configuration unit 51a bundles all or part of the first transmission occasion, and the first transmission occasion corresponds to the same time domain position and is associated with the same SSB.

[0140] In some embodiments, the configuration unit 51a bundles all or part of the second transmission occasion, and the second transmission occasion corresponds to the same frequency domain position and is associated with the same SSB.

[0141] In some embodiments, the constituent unit 51a constitutes a bundling relationship between different transmission occasions having the same time granularity.

[0142] In some embodiments, the time granularity includes a time slot, a subframe, or a system frame.

[0143] In some embodiments, the transmission device 5a further includes a detection unit 53a for performing joint detection on signals received on different transmission occasions having a bundling relationship, and a processing unit 54a for scrambling the scheduled RAR based on the result of the joint detection. The transmission unit sends the scrambled RAR to the UE, enabling the UE to determine whether the signal transmission of the UE is successful based on whether the scrambling of the scrambled RAR can be decoded.

[0144] In some embodiments, the detection unit 53a performs joint preamble detection on signals received on different transmission occasions having a bundling relationship.

[0145] In some embodiments, the processing unit 54a calculates the RA-RNTI according to the result of the joint detection, scrambles the DCI 1_0 of the scheduled RAR, and adds the RAPID corresponding to the RA-RNTI to the scrambled RAR.

[0146] In some embodiments, when the processing unit 54a detects that the energy of the preamble sequence is greater than the detection threshold, the RA-RNTI is calculated based on the time domain position and the frequency domain position of one of the different transmission occasions having a bundling relationship.

[0147] In some embodiments, the one transmission occasion includes the transmission occasion having the smallest index value or the largest index value among different transmission occasions having a bundling relationship.

[0148] In some embodiments, the transmission occasion includes a PRACH transmission occasion.

[0149] FIG. 5b shows a block diagram of a signal transmission device on the user side according to some embodiments of the present disclosure.

[0150] As shown in FIG. 5b, the signal transmission device 5b includes a receiving unit 51b for receiving a bundling relationship between different transmission occasions configured on the network side, where a plurality of transmission occasions having the bundling relationship are used for repeated transmission of the same signal, and a transmitting unit 52b for determining a transmission occasion for signal transmission based on the bundling relationship.

[0151] In some embodiments, the transmitting unit 52b performs repeated transmission of a signal on different transmission occasions that have a bundling relationship and are associated with an SSB selected by the UE during cell search.

[0152] In some embodiments, the transmitting unit 52b determines a beam to be used for signal transmission on different transmission occasions based on the bundling relationship.

[0153] In some embodiments, the bundling relationship includes a first bundling relationship and a second bundling relationship. The transmitting unit 52b performs repeated transmission of a signal using a first beam on different transmission occasions having the first bundling relationship, and performs repeated transmission of the signal using a second beam on different transmission occasions having the second bundling relationship, where the first beam is different from the second beam. Alternatively, the transmitting unit 52b performs repeated transmission of a signal using different beams on different transmission occasions having the first bundling relationship.

[0154] In some embodiments, the transmitting apparatus 5b further includes a processing unit 53b for descrambling the scrambled RAR sent from the network side, and a determination unit 54b for determining whether signal transmission is successful based on whether the scrambled RAR can be descrambled.

[0155] In some embodiments, the processing unit 53b determines whether one RA-RNTI or a plurality of RA-RNTIs are used to descramble the DCI 1_0 of the RAR based on whether repeated transmission of the signal is performed, and the determination unit 54b determines that signal transmission is successful in response to correctly identifying the RAPID in the RAR scheduled by the DCI 1_0.

[0156] In some embodiments, in response to not performing repeated transmission of the signal, the processing unit 53b uses one RA-RNTI to descramble the DCI 1_0 of the RAR, and the one RA-RNTI is calculated based on the time-domain position and frequency-domain position of the transmission occasion where signal transmission is performed. In response to performing repeated transmission of the signal, the processing unit 53b uses a plurality of RA-RNTIs to descramble the DCI 1_0 of the RAR, and the plurality of RA-RNTIs are calculated based on the time-domain position and frequency-domain position of the transmission occasion where repeated transmission of the signal is performed.

[0157] FIG. 6 shows a block diagram of a signal transmission device according to some embodiments of the present disclosure.

[0158] As shown in FIG. 6, the signal transmission device of this embodiment includes a memory 61 and a processor 62 coupled to the memory 61. The processor 62 is configured to implement a signal transmission method on the network side or a signal transmission method on the user side provided by any one of the embodiments of the present disclosure based on instructions stored in the memory 61.

[0159] Here, the memory 61 may include, for example, a system memory, a fixed non-volatile storage medium, etc. The system memory stores, for example, an operating system, an application, a boot loader, a database, and other programs.

[0160] FIG. 7 shows a block diagram of a signal transmission device according to another embodiment of the present disclosure.

[0161] As shown in FIG. 7, the signal transmission device 7 of this embodiment includes a memory 710 and a processor 720 coupled to the memory 710. The processor 720 is configured to implement a signal transmission method on the network side or a signal transmission method on the user side provided by any one of the embodiments of the present disclosure based on instructions stored in the memory 710.

[0162] The memory 710 may include, for example, a system memory, a fixed non-volatile storage medium, etc. The system memory stores, for example, an operating system, an application program, a boot loader, a database, and other programs.

[0163] The signal transmission device 7 may further include an input / output interface 730, a network interface 740, a storage interface 750, etc. These interfaces 730, 740, 750, the memory 710, and the processor 720 may be connected via, for example, a bus 760. Here, the input / output interface 730 provides a connection interface for input / output devices such as a display, a mouse, a keyboard, a touch screen, a microphone, and a loudspeaker. The network interface 740 provides a connection interface for various network devices. The storage interface 750 provides a connection interface for external storage devices such as an SD card and a USB flash drive.

[0164] FIG. 8 shows a block diagram of a signal transmission system according to some embodiments of the present disclosure.

[0165] As shown in FIG. 8, the signal transmission system 8 includes a network-side device 81 for implementing the signal transmission method on the network side according to any one of the above embodiments, and a user device 82 for implementing the signal transmission method on the user side according to any one of the above embodiments.

[0166] Those skilled in the art should understand that the embodiments of the present disclosure can be provided as a method, a system, or a computer program product. Therefore, the embodiments of the present disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment including both a hardware aspect and a software aspect. Furthermore, the present disclosure can also take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk memory, CD-ROM, optical memory, etc.) incorporating computer-usable program code.

[0167] So far, the signal transmission method, signal transmission device, signal transmission system, non-volatile computer-readable storage medium, and computer program according to the present disclosure have been described in detail. To avoid obscuring the concepts of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can understand how to implement the technical solutions disclosed in this specification.

[0168] The method and system of the present disclosure can be implemented in many ways. For example, the method and system of the present disclosure can be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above sequence of steps of the method is only for illustration, and the steps of the method of the present disclosure are not limited to the above specific order unless otherwise specified. In addition, in some embodiments, the present disclosure can also be implemented as a program recorded on a recording medium, and these programs include machine-readable instructions for implementing the method according to the present disclosure. Therefore, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure. Although some specific embodiments of the present disclosure have been described in detail by way of example, those skilled in the art should understand that the above examples are only for illustration and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments can be modified without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the following claims.

Claims

1. Configuring a bundling relationship between different transmission occasions, wherein a plurality of transmission occasions having the bundling relationship are used for repeated transmission of the same signal, and configuring the bundling relationship; Sending the bundling relationship to a UE (User Equipment) so that the UE can determine a transmission occasion for signal transmission based on the bundling relationship; A signal transmission method comprising the above.

2. Configuring the bundling relationship between the different transmission occasions includes: Configuring the bundling relationship according to at least one of a time domain position and a frequency domain position corresponding to each transmission occasion of the plurality of transmission occasions, and an SSB (Synchronization Signal Block) associated with each transmission occasion. The transmission method according to claim 1.

3. Configuring the bundling relationship between the different transmission occasions includes: Bundling transmission occasions associated with the same SSB. The transmission method according to claim 2.

4. Bundling the transmission occasions associated with the same SSB includes: Bundling all or part of a first transmission occasion, wherein the first transmission occasion corresponds to the same time domain position and is associated with the same SSB. The transmission method according to claim 3.

5. Bundling the transmission occasions associated with the same SSB includes: Bundling all or part of a second transmission occasion, wherein the second transmission occasion corresponds to the same frequency domain position and is associated with the same SSB. The transmission method according to claim 3 or 4.

6. Configuring the bundling relationship between the different transmission occasions includes: Configuring the bundling relationship between the different transmission occasions having the same time granularity. The transmission method according to any one of claims 1 to 5.

7. The time granularity includes a time slot, a subframe, or a system frame. The transmission method according to claim 6.

8. Performing joint detection on signals received on the different transmission occasions having the bundling relationship; Scrambling a scheduled RAR (Random Access Response) according to the result of the joint detection; Send the scrambled RAR to the UE so that the UE can determine whether the signal transmission of the UE is successful based on whether the scrambling of the scrambled RAR can be released. The transmission method according to any one of claims 1 to 7, further comprising.

9. Performing joint detection on signals received on the different transmission occasions having the bundling relationship means The transmission method according to claim 8, comprising performing joint preamble detection on the signals received on the different transmission occasions having the bundling relationship.

10. Scrambling the scheduled RAR (Random Access Response) according to the result of the joint detection means Calculating a RA-RNTI (Random Access Radio Network Temporary Identifier) based on the result of the joint detection, Scrambling the DCI 1_0 (Downlink Control Information 1_0) of the scheduled RAR, Adding a RAPID (Random Access Preamble Identifier) corresponding to the RA-RNTI to the scrambled RAR. The transmission method according to claim 8 or 9, comprising.

11. Calculating a RA-RNTI (Random Access Radio Network Temporary Identifier) based on the result of the joint detection means Calculating the RA-RNTI based on the time domain position and the frequency domain position of one of the different transmission occasions having the bundling relationship in response to detecting that the energy of the preamble sequence is greater than a detection threshold. The transmission method according to claim 10, comprising.

12. The transmission method according to claim 11, wherein the one transmission occasion includes a transmission occasion having the smallest index value or the largest index value among the different transmission occasions having the bundling relationship.

13. The transmission method according to any one of claims 1 to 12, wherein the transmission occasion includes a PRACH (Physical Random Access Channel) transmission occasion.

14. Receiving a bundling relationship between different transmission occasions configured on the network side, wherein a plurality of transmission occasions having the bundling relationship are used for repeated transmission of the same signal, and receiving the bundling relationship; Determining a transmission occasion for signal transmission based on the bundling relationship; A signal transmission method including the above.

15. Determining a transmission occasion for signal transmission based on the bundling relationship includes: Performing repeated transmission of a signal on the different transmission occasions having the bundling relationship and associated with an SSB (synchronization signal block) selected by a UE (user equipment) during cell search, according to the transmission method of claim 14.

16. Determining a transmission occasion for signal transmission based on the bundling relationship includes: Determining a beam used for the signal transmission on the different transmission occasions based on the bundling relationship, according to the transmission method of claim 14 or 15.

17. The bundling relationship includes a first bundling relationship and a second bundling relationship, Determining a beam used for the signal transmission on the different transmission occasions based on the bundling relationship includes: Performing repeated transmission of the signal using a first beam on different transmission occasions having the first bundling relationship, and performing repeated transmission of the signal using a second beam on different transmission occasions having the second bundling relationship, wherein the first beam is different from the second beam, or performing repeated transmission of the signal using different beams on the different transmission occasions having the first bundling relationship; Performing repeated transmission of the signal using different beams on the different transmission occasions having the first bundling relationship; According to the transmission method of claim 16.

18. Removing the scrambling of a scrambled RAR (random access response) sent from the network side; Determining whether the signal transmission is successful based on whether the scrambling of the scrambled RAR can be removed; The signal transmission method according to any one of claims 14 to 17, further including the above.

19. Removing the scrambling of the scrambled RAR sent from the network side includes: Based on whether the repeated transmission of the signal is performed, determining whether one RA-RNTI (Random Access Radio Network Temporary Identifier) is used or a plurality of RA-RNTIs are used to de-scramble the DCI 1_0 (Downlink Control Information 1_0) of the RAR, Determining that the signal transmission is successful in response to correctly identifying the RAPID (Random Access Preamble Identifier) in the RAR scheduled by the DCI 1_0, The transmission method according to claim 18, comprising:

20. Based on whether the repeated transmission of the signal is performed, determining whether one RA-RNTI (Random Access Radio Network Temporary Identifier) is used or a plurality of RA-RNTIs are used to de-scramble the DCI 1_0 of the RAR is In response to the repeated transmission of the signal not being performed, using the one RA-RNTI to de-scramble the DCI 1_0 of the RAR, where the one RA-RNTI is calculated based on the time domain position and frequency domain position of the transmission occasion where the signal transmission is performed, using the one RA-RNTI, In response to the repeated transmission of the signal being performed, using the plurality of RA-RNTIs to de-scramble the DCI 1_0 of the RAR, where the plurality of RA-RNTIs are calculated based on the time domain position and frequency domain position of the transmission occasion where the repeated transmission of the signal is performed, using the plurality of RA-RNTIs, The transmission method according to claim 19, comprising:

21. A configuration unit configured to configure a bundling relationship between different transmission occasions, where the plurality of transmission occasions having the bundling relationship are used for the repeated transmission of the same signal, A sending unit configured to send the bundling relationship to the UE so that the UE can determine a transmission occasion for signal transmission based on the bundling relationship, A signal transmission device comprising:

22. A detection unit configured to perform joint detection on signals received on the different transmission occasions having the bundling relationship, A processing unit configured to scramble a scheduled RAR (Random Access Response) based on the result of the co-detection, and further comprising The transmitting unit sends the scrambled RAR to the UE, and enables the UE to determine whether the signal transmission of the UE is successful based on whether the scramble of the scrambled RAR can be removed. The transmitting device according to claim 21.

23. A receiving unit configured to receive a bundling relationship between different transmission occasions configured on the network side, wherein the plurality of transmission occasions having the bundling relationship are used for repeated transmission of the same signal, and a receiving unit, A transmitting unit configured to determine a transmission occasion for signal transmission based on the bundling relationship, A signal transmission device comprising.

24. A processing unit configured to descramble a scrambled RAR (Random Access Response) sent from the network side, and A determination unit configured to determine whether the signal transmission is successful based on whether the scramble of the scrambled RAR can be removed, The transmitting device according to claim 23, further comprising.

25. A network-side device configured to implement the signal transmission method according to any one of claims 1 to 13, and A user equipment configured to implement the signal transmission method according to any one of claims 14 to 20, A signal transmission system comprising.

26. A memory, A processor coupled to the memory, Comprising, The processor is configured to implement the signal transmission method according to any one of claims 1 to 13 or the signal transmission method according to any one of claims 14 to 20 based on instructions stored in the memory. A signal transmission device.

27. A non-volatile computer-readable storage medium storing a computer program that, when executed by a processor, implements the signal transmission method according to any one of claims 1 to 13 or the signal transmission method according to any one of claims 14 to 20.

28. A computer program comprising instructions which, when executed by a processor, cause the processor to perform the signal transmission method according to any one of claims 1 to 13 or the signal transmission method according to any one of claims 14 to 20.

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