Communication control method and apparatus, communication device, and storage medium

Abstract

The present disclosure provides a communication control method and device, communication equipment and storage medium, and relates to the technical field of mobile communication. The method comprises the following steps: a network device transmits a first synchronization broadcast block (SSB) to a user equipment (UE) by using a first resource block (RB) matching a system bandwidth and / or a channel bandwidth, wherein the first SSB at least comprises a physical broadcast channel (PBCH), and the number of the first RB is less than the number of a second RB, and the second RB is a time-frequency resource for transmitting a second SSB. The present disclosure provides a SSB / PBCH transmission mode to match the system bandwidth and / or the channel bandwidth of a dedicated spectrum, while ensuring the transmission performance of the PBCH.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of mobile communication, and in particular, to a communication control method and device, a communication apparatus, and a storage medium. BACKGROUND

[0002] R18 research will support NR technology for part of the dedicated spectrum (n8, n26, n28 and n100) of LTE / GSM-R (Global System for Mobile Communications-Railway, Integrated Digital Mobile Communication System for Railway), which mainly provides communication services for dedicated services such as power systems / railway systems, public protection and disaster relief in some countries and regions, however, in the existing NR system, PBCH (Physical Broadcast Channel) occupies 20 RBs (Resource Blocks) for transmission, for a communication system with a system bandwidth or channel bandwidth less than 5MHz, such as a 3MHz (15 RBs available) and a 2.8MHz-3.6MHz private network system, there is no related solution for SSB (Synchronization signal / PBCH block) transmission. SUMMARY

[0003] The present disclosure provides a communication control method and device, a communication apparatus, and a storage medium, aiming to provide a PBCH transmission method to match a system bandwidth and / or channel bandwidth less than 5MHz, while ensuring the transmission performance of PBCH.

[0004] The first aspect embodiment of the present disclosure provides a communication control method, the method is executed by a network device, and the method comprises the following steps: transmitting a first synchronization broadcast block (SSB) to a user equipment (UE) by using a first resource block (RB) matching a system bandwidth and / or a channel bandwidth, the first SSB at least comprising a physical broadcast channel (PBCH), wherein the number of the first RB is less than the number of a second RB, and the second RB is a time-frequency resource for transmitting a second SSB.

[0005] In some embodiments of the present disclosure, the method further comprises: determining a first subcarrier index of the first RB where the first SSB is located, wherein the first subcarrier index is an offset of a first subcarrier 0 in the first RB.

[0006] In some embodiments of the present disclosure, the method further comprises: performing rate matching according to the second RB to determine the length of the coded bits matching the second RB; performing modulation on the coded bits matching the second RB, and performing resource mapping on the symbol data obtained after modulation according to the second RB to determine the transmission position of the symbol data matching the second RB.

[0007] In some embodiments of the present disclosure, transmitting the first SSB to the UE in the first RB matching the system bandwidth and / or the channel bandwidth comprises: selecting, from the transmission positions of the symbols matching the second RB, the transmission positions of the symbols of the first RB at the SSB center frequency point to transmit the first SSB to the UE.

[0008] In some embodiments of the present disclosure, transmitting the first SSB to the UE in the first RB matching the system bandwidth and / or the channel bandwidth comprises: reserving the symbol data carried by each subcarrier on the first RB at the SSB center frequency point, and setting the symbol data carried by each subcarrier on the first RB beyond to 0; and performing orthogonal frequency division multiplexing (OFDM) modulation according to the first subcarrier indexes of the first RB at the SSB center frequency point and the corresponding symbol data to transmit the first SSB to the UE.

[0009] In some embodiments of the present disclosure, transmitting the first SSB to the UE in the first RB matching the system bandwidth and / or the channel bandwidth comprises: determining the second subcarrier indexes of the second RB at the SSB center frequency point; replacing the second subcarrier indexes with the first subcarrier indexes; and performing OFDM modulation according to the first subcarrier indexes of the first RB at the SSB center frequency point and the corresponding symbol data to transmit the first SSB to the UE.

[0010] In some embodiments of the present disclosure, after performing resource mapping on the modulated symbol data according to the second RB to determine the transmission positions of the symbol data matching the second RB, the method further comprises: remapping the symbol data matching the second RB to the first RB.

[0011] In some embodiments of the present disclosure, remapping the symbol data matching the second RB to the first RB comprises: using different PBCH resource remapping patterns for at least two different PBCH transmissions to remap the symbol data matching the second RB to the first RB.

[0012] In some embodiments of the present disclosure, the method further comprises: configuring the UE with pattern-related information of the different PBCH resource remapping patterns used for the at least two different PBCH transmissions.

[0013] In some embodiments of this disclosure, transmitting a first SSB to a UE using a first RB that matches the system bandwidth and / or channel bandwidth includes: retaining the symbol data carried by each subcarrier on the first RB after remapping at the center frequency point of the SSB, and setting the symbol data carried by each subcarrier on the first RB after remapping to 0; performing orthogonal frequency division multiplexing (OFDM) modulation according to the first subcarrier index of the first RB at the center frequency point of the SSB and its corresponding symbol data to transmit the first SSB to the UE.

[0014] In some embodiments of this disclosure, transmitting a first SSB to a UE using a first RB that matches the system bandwidth and / or channel bandwidth includes: determining a second subcarrier index of a second RB at the center frequency of the SSB; replacing the second subcarrier index with a first subcarrier index; and performing OFDM modulation according to the first subcarrier index of the first RB at the center frequency of the SSB and its corresponding remapped symbol data to transmit the first SSB to the UE.

[0015] In some embodiments of this disclosure, the method further includes: performing rate matching based on a first RB to determine the length of the coded bits matched with the first RB; modulating the coded bits matched with the first RB; and performing resource mapping on the modulated symbol data based on the first RB and a first subcarrier index to determine the transmission location of the symbol data matched with the first RB.

[0016] In some embodiments of this disclosure, rate matching based on the first RB includes: rate matching using the same coded bit start position for at least two different PBCH transmissions.

[0017] In some embodiments of this disclosure, rate matching based on the first RB includes: rate matching with different coded bit start positions for at least two different PBCH transmissions, wherein the different coded bit start positions used for rate matching depend on the length of the coded bits that match the system bandwidth and / or channel bandwidth.

[0018] In some embodiments of this disclosure, the method further includes: sending rate-matched coded bit start position configuration signaling to the UE for at least two different PBCH transmissions.

[0019] In some embodiments of this disclosure, at least two different PBCH transmissions include: PBCH transmissions corresponding to any two or more SSB indices within the SSB set in the same SSB period; or PBCH transmissions corresponding to the same SSB index in at least two different SSB periods.

[0020] In some embodiments of this disclosure, the method further includes: determining a first RB, wherein the number of first RBs is equal to or less than the number of RBs corresponding to the maximum time-frequency resource supported by the system bandwidth and / or channel bandwidth.

[0021] A second aspect of this disclosure provides a communication control method executed by a user equipment (UE). The method includes: receiving a first synchronization broadcast block (SSB) corresponding to a first RB that matches the system bandwidth and / or channel bandwidth, sent by a network device. The first SSB includes at least a physical broadcast channel (PBCH), wherein the number of first RBs is less than the number of second RBs, and the second RBs are time-frequency resources for transmitting the second SSB.

[0022] In some embodiments of this disclosure, the method further includes: performing OFDM demodulation on the PBCH; determining the RE index reordering method of the first SSB according to the protocol agreement; and determining the transmission position of the symbol data that matches the second RB where the OFDM demodulated symbol is located based on the RE index position and RE index reordering method of the second SSB.

[0023] In some embodiments of this disclosure, the method further includes: performing de-resource mapping and de-rate matching based on the second RB.

[0024] In some embodiments of this disclosure, the method further includes: performing de-resource mapping and de-rate matching based on the first RB.

[0025] In some embodiments of this disclosure, the method further includes: performing separate decoding or combined decoding for at least two different PBCH transmissions.

[0026] In some embodiments of this disclosure, merging and decoding for at least two different PBCH transmissions includes: for at least two different PBCH transmissions using different PBCH resource remapping patterns, merging and decoding are performed in the initial access state according to a preset pattern order and / or the cyclic order of the starting positions of the encoded bits.

[0027] In some embodiments of this disclosure, merging and decoding for at least two different PBCH transmissions includes: for at least two different PBCH transmissions using different PBCH resource remapping patterns, in a non-initial access state, merging and decoding is performed according to pattern-related information agreed upon by the protocol or configured by the network device and / or the cyclic order of the starting positions of encoded bits agreed upon by the protocol or configured by the network device.

[0028] In some embodiments of this disclosure, the method further includes: receiving pattern-related information and / or coded bit start position cycle order of different PBCH resource remapping patterns used by at least two different PBCH transmissions sent by the network device.

[0029] In some embodiments of this disclosure, the method further includes: determining the PBCH resource remapping pattern used for each PBCH transmission based on pattern-related information and downlink timing.

[0030] In some embodiments of this disclosure, the method further includes: determining the starting position of the encoded bits used for each PBCH rate matching based on the cyclic order of the starting positions of the encoded bits and the downlink timing.

[0031] In some embodiments of this disclosure, at least two different PBCH transmissions include: PBCH transmissions corresponding to any two or more SSB indices within the SSB set in the same SSB period; or PBCH transmissions corresponding to the same SSB index in at least two different SSB periods.

[0032] In some embodiments of this disclosure, before performing de-resource mapping and de-rate matching based on the second RB, the method further includes: performing de-resource remapping on the symbolic data on the first RB.

[0033] A third aspect of this disclosure provides a communication control apparatus configured in a network device. The apparatus includes a transceiver module configured to: transmit a first synchronization broadcast block (SSB) to a user equipment (UE) in the form of a first resource block (RB) matching the system bandwidth and / or channel bandwidth. The first SSB includes at least a physical broadcast channel (PBCH), wherein the number of first RBs is less than the number of second RBs, and the second RBs are time-frequency resources for transmitting the second SSB.

[0034] A fourth aspect of this disclosure provides a communication control apparatus configured in a user equipment (UE). The apparatus includes a transceiver module configured to: receive a first synchronization broadcast block (SSB) corresponding to a first RB that matches the system bandwidth and / or channel bandwidth, transmitted by a network device. The first SSB includes at least a physical broadcast channel (PBCH), wherein the number of first RBs is less than the number of second RBs, and the second RBs are time-frequency resources for transmitting the second SSB.

[0035] A fifth aspect embodiment of this disclosure provides a communication device comprising: a transceiver; a memory; and a processor, respectively connected to the transceiver and the memory, configured to control the transmission and reception of wireless signals of the transceiver by executing computer-executable instructions on the memory, and capable of implementing the methods of the first or second aspect embodiments of this disclosure.

[0036] A sixth aspect of this disclosure provides a computer storage medium storing computer-executable instructions; when executed by a processor, the computer-executable instructions can implement the methods of the first or second aspect of this disclosure.

[0037] A seventh aspect embodiment of this disclosure provides a communication system including a network device and a user equipment (UE), wherein the network device is configured to perform the method as described in the first aspect embodiment, and the UE is configured to perform the method as described in the second aspect embodiment.

[0038] According to the communication control method disclosed herein, a network device sends a first synchronization broadcast block (SSB) to a user equipment (UE) using a first resource block (RB) that matches the system bandwidth and / or channel bandwidth. The first SSB includes at least a physical broadcast channel (PBCH). The number of first RBs is less than the number of second RBs. The second RBs are time-frequency resources for transmitting the second SSB. An SSB / PBCH transmission mode is proposed to match the system bandwidth and / or channel bandwidth of the dedicated spectrum while ensuring the transmission performance of the PBCH.

[0039] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0040] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0041] Figure 1 This is a flowchart illustrating a communication control method according to an embodiment of the present disclosure;

[0042] Figure 2 This is a flowchart illustrating a communication control method according to an embodiment of the present disclosure;

[0043] Figure 3 This is a schematic diagram of a method for selecting an RB at the center frequency point of an SSB that matches the system bandwidth according to an embodiment of the present disclosure;

[0044] Figure 4 This is a flowchart illustrating a communication control method according to an embodiment of the present disclosure;

[0045] Figure 5 This is a schematic diagram of a resource remapping pattern according to an embodiment of the present disclosure;

[0046] Figure 6 This is a flowchart illustrating a communication control method according to an embodiment of the present disclosure;

[0047] Figure 7This is a flowchart illustrating a communication control method according to an embodiment of the present disclosure;

[0048] Figure 8 This is a flowchart illustrating a communication control method according to an embodiment of the present disclosure;

[0049] Figure 9 This is a flowchart illustrating a communication control method according to an embodiment of the present disclosure;

[0050] Figure 10 This is an interaction diagram of a communication control method according to an embodiment of the present disclosure;

[0051] Figure 11 This is a schematic block diagram of a communication control device according to an embodiment of the present disclosure;

[0052] Figure 12 This is a schematic block diagram of a communication control device according to an embodiment of the present disclosure;

[0053] Figure 13 This is a schematic block diagram of a communication control device according to an embodiment of the present disclosure;

[0054] Figure 14 is a schematic block diagram of a communication control device according to an embodiment of the present disclosure;

[0055] Figure 15 This is a schematic diagram of the structure of a communication device according to an embodiment of the present disclosure;

[0056] Figure 16 This is a schematic diagram of the structure of a chip provided in an embodiment of the present disclosure. Detailed Implementation

[0057] Embodiments of this disclosure are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting this disclosure.

[0058] The Release 18 (R18) study will support NR technology on some dedicated spectrum (n8, n26, n28, and n100) for LTE / GSM-R. This spectrum will primarily provide communication services for dedicated services such as power / railway systems, public protection, and disaster relief in certain countries and regions. This spectrum only supports a 15kHz subcarrier spacing, and the supported system bandwidths include 5MHz and 3MHz. According to the NR and LTE specifications for RF channel bandwidth, there are 25 available redundancy blocks (RBs) for 5MHz; and according to the LTE specifications for RF channel bandwidth, there are 15 available RBs for 3MHz.

[0059] However, in existing NR systems, the PBCH occupies 20 RBs for transmission. For 3MHz (15 RBs) and 2.8MHz to 3.6MHz private network systems, there is a lack of definitions related to PBCH transmission. One possible approach is that the PBCH still occupies 20 RBs, with the base station / terminal performing transmission / reception on a portion of the RBs. This would result in a loss of PBCH transmission performance. Therefore, for 3MHz and 2.8MHz to 3.6MHz private network systems, it is necessary to consider how to perform PBCH transmission and how to improve PBCH transmission performance.

[0060] Therefore, this disclosure proposes a communication control method, apparatus, communication device, and storage medium, aiming to provide a PBCH transmission mode to match the system bandwidth and / or channel bandwidth of the dedicated spectrum, while ensuring the transmission performance of PBCH.

[0061] It is understood that the solutions provided in this disclosure can be applied to satellite access networks, and in particular, to communication scenarios where UEs access the core network through satellite access networks, including but not limited to 5G core networks and core networks that support their subsequent communication technologies, such as Long Term Evolution (LTE), 5G-advanced, and Sixth Generation (6G), which are not limited in this disclosure.

[0062] The user equipment described in this disclosure includes, but is not limited to, smart terminal devices, cellular phones, wireless devices, handheld devices, mobile units, vehicles, and in-vehicle equipment, and is not restricted by this disclosure.

[0063] The solution provided in this disclosure will now be described in detail with reference to the accompanying drawings.

[0064] Figure 1 A flowchart illustrating a communication control method according to an embodiment of this disclosure is shown. The method is executed by a network device.

[0065] The network device in this application embodiment is an entity on the network side used to transmit or receive signals. For example, the network device can be an evolved NodeB (eNB), a transmission reception point (TRP), a next-generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. The embodiments of this application do not limit the specific technology or device form used in the network device. The network device provided in this application embodiment can be composed of a central unit (CU) and a distributed unit (DU). The CU can also be called a control unit. Using a CU-DU structure, the protocol layer of the network device, such as a base station, can be separated. Some protocol layer functions are centrally controlled by the CU, while the remaining part or all protocol layer functions are distributed in the DU, which is centrally controlled by the CU.

[0066] like Figure 1 As shown, the method may include the following steps.

[0067] S101, a first synchronization broadcast block (SSB) is sent to the user equipment (UE) with a first resource block (RB) that matches the system bandwidth and / or channel bandwidth, wherein the first SSB includes at least the physical broadcast channel (PBCH).

[0068] The number of first RBs is less than the number of second RBs, and the second RBs are time-frequency resources for transmitting the second SSB.

[0069] In embodiments of this disclosure, the system bandwidth and / or channel bandwidth may also be available bandwidth resources, which are not limited in this disclosure.

[0070] In embodiments of this disclosure, the second RB is used to transmit the second SSB, which is matched with the current protocol, for example, the number of second RBs is 20; the first RB is used to transmit the first SSB, which is matched with the system bandwidth and / or channel bandwidth, for example, the number of first RBs is 15. The number of first RBs is less than the number of second RBs, that is, the time-frequency resources supported by the system bandwidth or channel bandwidth in this disclosure are lower than the SSB transmission time-frequency resources supported by the current NR protocol. This disclosure uses the provision in LTE that 15 RBs are available for a 3MHz system bandwidth or channel bandwidth as an example for illustration. It should be understood that the correspondence between the 3MHz system bandwidth or channel bandwidth and the number of matched RBs in this disclosure is not limited to this, and other correspondences allowed or achievable by the protocol are included within the scope of this disclosure. Similarly, the number of RBs matched for a private network system of 2.8MHz to 3.6MHz is not specifically limited in this disclosure, and the number of RBs determined according to actual needs shall prevail.

[0071] It should be noted that in the existing NR system, the SSB occupies 20 RBs in the frequency domain, the Physical Broadcast Channel (PBCH) occupies 20 RBs in the frequency domain, and the PSS (Primary Synchronization Signal) and SSS (Secondary Synchronization Signal) each occupy 127 REs in the frequency domain.

[0072] Furthermore, the time-frequency resources of the second SSB are the time-frequency resources that support the transmission of SSBs in the existing NR protocol R15 / 16 / 17. The SSB transmission frequency domain resources in the existing NR protocol occupy 20 RBs. That is to say, the number of RBs in the second SSB is the number of RBs occupied by the second SSB in the frequency domain, or the number of RBs occupied by the PBCH in the second SSB in the frequency domain, which is 20.

[0073] In the embodiments of this disclosure, the time-frequency resources supported by the system bandwidth or channel bandwidth are lower than the time-frequency resources occupied by SSB transmission supported by the current NR protocol. For example, the system bandwidth or channel bandwidth of some dedicated spectrum is 3MHz and 2.8MHz to 3.6MHz, and the number of supported RBs is less than 20.

[0074] Furthermore, the time-frequency resources of the first SSB are time-frequency resources that match the system bandwidth / channel bandwidth. For example, the first RB matches the system bandwidth of 3MHz. According to the LTE specification for RF channel bandwidth, there are 15 available RBs in 3MHz, which does not support SSB transmission in the existing NR system (occupying 20 RBs in the frequency domain). The number of the first RB is the number of RBs occupied by the first SSB in the frequency domain, or the number of RBs occupied by the PBCH in the first SSB in the frequency domain, with a maximum of 15.

[0075] In summary, according to the communication control method provided in the embodiments of this disclosure, the network device sends a first synchronization broadcast block (SSB) to the user equipment (UE) with a first resource block (RB) that matches the system bandwidth and / or channel bandwidth. The first SSB includes at least a physical broadcast channel (PBCH), wherein the number of first RBs is less than the number of second RBs, and the second RBs are time-frequency resources for transmitting the second SSB. An SSB transmission method is proposed to match the system bandwidth and / or channel bandwidth of the dedicated spectrum.

[0076] Figure 2 A flowchart illustrating a communication control method according to an embodiment of the present disclosure is shown. This method can be executed by a network device, based on... Figure 1 The illustrated embodiment, as Figure 2 As shown, the method may include the following steps.

[0077] S201, perform rate matching based on the second RB to determine the length of the coded bits that match the second RB.

[0078] S202, modulate the coded bits that match the second RB, and perform resource mapping on the modulated symbol data according to the second RB to determine the transmission location of the symbol data that matches the second RB.

[0079] It should be noted that in this embodiment, rate matching, modulation, and resource mapping based on the second RB are specified in existing protocols. This is to obtain the transmission location of symbol data that matches the second RB, which is then used to determine the transmission location of symbol data of the first RB.

[0080] In other words, network devices still support the time-frequency resources of SSB transmission in R15 / 16 / 17 according to the existing NR protocol (SSB occupies 20 RBs in the frequency domain) for rate matching, QPSK modulation and resource mapping. Or, network devices still support the time-frequency domain resource structure of PBCH in the traditional SSB (PBCH occupies 20 RBs in the frequency domain) for rate matching, QPSK modulation and resource mapping.

[0081] Specifically, rate matching is performed based on the existing 20 RB SSB time-frequency resource structure / PBCH time-frequency resource structure in the SSB, the output bit length is 864 bits, QPSK modulation is performed on the 864 coded bits, and the transmission position of the modulated symbol data is determined by performing resource mapping on the existing 20 RB PBCH time-frequency resource structure.

[0082] In some embodiments, the method further includes: determining the first RB, wherein the number of the first RB is equal to or less than the number of RBs corresponding to the maximum time-frequency resource supported by the system bandwidth and / or channel bandwidth.

[0083] It is understood that, in order to address the issue of existing protocol R18 supporting NR technology for communication services on a portion of the dedicated spectrum of LTE / GSM-R, the system bandwidth and / or channel bandwidth described in this disclosure include a dedicated network system bandwidth of 3 MHz and / or a dedicated network system bandwidth of 2.8 MHz to 3.6 MHz, and the first RB can be matched with a system bandwidth and / or channel bandwidth of 3 MHz and / or 2.8 MHz to 3.6 MHz.

[0084] For example, the first RB is matched with a system bandwidth and / or channel bandwidth of 3MHz. The number of available RBs for the 3MHz system bandwidth and / or channel bandwidth is 15, that is, the maximum supported time-frequency resources are 15. The number of the first RB is equal to or less than 15.

[0085] S203, from the transmission positions of symbols matching the second RB, select the transmission position of the number of symbols of the first RB at the center frequency of the SSB to send the first SSB to the UE.

[0086] In other words, from the transmission locations of symbols that match the time-frequency resources (5MHz system bandwidth, 20 RBs in the frequency domain) supported by the existing R15 / 16 / 17NR protocol for transmitting SSB / PBCH, select the number of symbols at the SSB center frequency point that match the system bandwidth and / or channel bandwidth (e.g., 3MHz system bandwidth for a dedicated network system, 15 RBs in the frequency domain).

[0087] The SSB center frequency point refers to the vicinity of the center frequency point of the SSB time-frequency resource structure in the existing NR system.

[0088] In some specific implementations, such as Figure 3 As shown, the first one on the left is the time-frequency resource structure of the PBCH in the existing NR, occupying 20 RBs in the frequency domain. RBs matching the 3MHz system bandwidth are selected, 15 RBs near the center frequency point are selected, and 5 RBs at the edge are discarded. Specifically, it can include, for example... Figure 3 The four selection methods shown in (a), (b), (c), and (d) are as follows: Figure 3 As shown, the right side shows the selected time-frequency resource structure of the PBCH that matches the 3MHz system bandwidth, occupying 15 RBs in the frequency domain.

[0089] In some embodiments of this disclosure, the method further includes: determining a first subcarrier index of a first RB where the first SSB is located, wherein the first subcarrier index is an offset relative to subcarrier 0 within the first RB.

[0090] In other words, the index position of each subcarrier in the first RB where the first SSB is located is offset relative to the resource mapping table of the existing NR system's SSB structure. The reference point is subcarrier 0 in the first RB. The resource mapping table of the existing NR system's SSB time-frequency structure is shown in Table 1.

[0091] Table 1 shows the specific time-frequency domain locations of each signal or channel in the SSB of the existing NR system. Here, l represents the time-domain symbol index (l = 0, 1, 2, 3), and k represents the frequency-domain RE index, i.e., the subcarrier index (the reference point is RE0 of SSB RB0, i.e., subcarrier 0 in RB0 of SSB, k = 0, 1, 2, ..., 239).

[0092] Table 1: Resources of PSS, SSS, PBCH, and DM-RS of PBCH in an SS / PBCH block

[0093]

[0094] In one implementation, a number of RBs near the center frequency point are selected as the first RB, and the subcarrier index of the first RB is redefined. The first subcarrier index of the first RB is equal to the subcarrier index of the second RB minus the offset, or the subcarrier index of the first SSB is equal to the subcarrier index of the second SSB minus the offset. The offset can be determined, but is not limited to, the following methods: offset = (20 - M) / 2 * 12, or offset = ceil((20 - M) / 2 * 12), or offset = floor((20 - M) / 2 * 12), where M is the actual number of RBs transmitting in the PBCH, i.e., the number of the first RBs.

[0095] Step 203 also includes the following two optional implementation methods:

[0096] In some embodiments of this disclosure, the symbol data carried by each subcarrier on the first RB at the center frequency of the SSB is retained, and the symbol data exceeding the symbol data carried by each subcarrier on the first RB is set to 0; Orthogonal Frequency Division Multiplexing (OFDM) modulation is performed according to the first subcarrier index of the first RB at the center frequency of the SSB and its corresponding symbol data to transmit the first SSB to the UE.

[0097] In other embodiments, a second subcarrier index of the second RB at the center frequency of the SSB is determined; the second subcarrier index is replaced with a first subcarrier index; OFDM modulation is performed according to the first subcarrier index of the first RB at the center frequency of the SSB and its corresponding symbol data to transmit the first SSB to the UE.

[0098] In other words, when performing OFDM modulation, the original symbol data on the RB that matches the system bandwidth is retained, and the REs that exceed the system bandwidth are set to 0. Alternatively, in step 202, the subcarrier index at the center frequency of the SSB is determined based on the subcarrier index after the second RB resource mapping, and it is replaced with the first subcarrier index. OFDM modulation is then performed according to the first subcarrier index at the center frequency of the SSB and its corresponding symbol data.

[0099] In summary, according to the communication control method provided in this disclosure, rate matching is performed based on the second RB to determine the length of the coded bits that match the second RB, modulation is performed on the coded bits that match the second RB, resource mapping is performed on the modulated symbol data based on the second RB to determine the transmission position of the symbol data that matches the second RB, and the transmission position of the number of symbols at the center frequency of the SSB is selected from the transmission positions of the symbols that match the second RB to send the first SSB to the UE. This proposes an SSB / PBCH transmission mode to match the system bandwidth and / or channel bandwidth of the dedicated spectrum, while ensuring the transmission performance of the PBCH.

[0100] Figure 4 A flowchart illustrating a communication control method according to an embodiment of the present disclosure is shown. This method is applied to a network device and is based on... Figure 1 and Figure 2 The illustrated embodiment, as Figure 4 As shown, the method may include the following steps.

[0101] S301, perform rate matching based on the second RB to determine the length of the coded bits that match the second RB.

[0102] S302, modulate the coded bits that match the second RB, and perform resource mapping on the modulated symbol data according to the second RB to determine the transmission location of the symbol data that matches the second RB.

[0103] It should be noted that in this embodiment, rate matching, modulation, and resource mapping based on the second RB are specified in existing protocols. This is to obtain the transmission location of symbol data that matches the second RB, which is then used to determine the transmission location of symbol data of the first RB.

[0104] In other words, network devices still support the time-frequency resources of SSB transmission in R15 / 16 / 17 according to the existing NR protocol (SSB occupies 20 RBs in the frequency domain), and perform rate matching, QPSK modulation and resource mapping. Or, network devices still perform rate matching, QPSK modulation and resource mapping according to the time-frequency domain resource structure of PBCH in the traditional SSB (PBCH occupies 20 RBs in the frequency domain).

[0105] Specifically, rate matching is performed based on the existing 20 RB SSB time-frequency resource structure / PBCH time-frequency resource structure in the SSB, the output bit length is 864 bits, QPSK modulation is performed on the 864 coded bits, and the transmission position of the modulated symbol data is determined by performing resource mapping on the existing 20 RB PBCH time-frequency resource structure.

[0106] In some embodiments, the method further includes: determining the first RB, wherein the number of the first RB is equal to or less than the number of RBs corresponding to the maximum time-frequency resource supported by the system bandwidth and / or channel bandwidth.

[0107] It is understood that, in order to address the issue of existing protocol R18 supporting NR technology for communication services on a portion of the dedicated spectrum of LTE / GSM-R, the system bandwidth and / or channel bandwidth described in this disclosure include a dedicated network system bandwidth of 3 MHz and / or a dedicated network system bandwidth of 2.8 MHz to 3.6 MHz, and the first RB can be matched with a dedicated system bandwidth and / or channel bandwidth of 3 MHz and / or 2.8 MHz to 3.6 MHz.

[0108] For example, the first RB is matched with a system bandwidth and / or channel bandwidth of 3MHz. The number of available RBs for the 3MHz system bandwidth and / or channel bandwidth is 15, that is, the maximum supported time-frequency resources are 15. The number of the first RB is equal to or less than 15.

[0109] S303, remaps the symbol data that matches the second RB onto the first RB.

[0110] It is understandable that, since the number of second RBs is greater than that of first RBs, remapping symbol data that matches the second RBs to the first RBs requires partial selection of the second RBs. Step 303 differs from step S203 in that it selects an RB at the SSB center frequency point that matches the system bandwidth and / or terminal channel bandwidth. Step 303 can remap symbol data that matches the second RBs to an RB that matches the system bandwidth and / or terminal channel bandwidth using different PBCH resource remapping patterns. After remapping, the transmission position corresponding to the symbol is at the SSB center frequency point.

[0111] likeFigure 5 As shown, pattern #1 and pattern #2 are two different PBCH resource remapping patterns listed in this disclosure. In pattern #1, the left side is the symbol data that matches the second RB, the top part of the RB is discarded, and the remaining symbol data is remapped to the first RB as shown on the right, at the center frequency of the SSB. In pattern #2, the left side is the symbol data that matches the second RB, the bottom part of the RB is discarded, and the remaining symbol data is remapped to the first RB as shown on the right, at the center frequency of the SSB.

[0112] In some embodiments of this disclosure, for at least two different PBCH transmissions, different PBCH resource remapping patterns are used to remap symbolic data that matches the second RB to the first RB.

[0113] Furthermore, at least two different PBCH transmissions include: PBCH transmissions corresponding to any two or more SSB indices within the SSB set in the same SSB period; or PBCH transmissions corresponding to the same SSB index in at least two different SSB periods.

[0114] For example, PBCH transmissions are repeated four times within 80ms. Within the same cycle, the PBCH transmission sends four different SSB indices. Different PBCH resource remapping patterns can be used in the PBCH transmissions corresponding to two or more SSB indices within the same cycle. For instance, pattern #1 can be used in the PBCH transmission corresponding to the first SSB index, pattern #2 in the PBCH transmission corresponding to the second SSB index, and pattern #1 and pattern #2 can be used sequentially for the PBCH transmissions corresponding to the remaining two SSB indices. Alternatively, PBCH transmissions corresponding to the same SSB index can be used in at least two different SSB cycles. For example, pattern #1 can be used in the PBCH transmission corresponding to the first SSB index in the first cycle, and pattern #2 can be used in the PBCH transmission corresponding to the first SSB index in the third cycle.

[0115] Furthermore, network devices can use two or more resource remapping patterns to transmit PBCH in a cyclic manner, for example, transmitting PBCH in the order of pattern#1, pattern#2, pattern#1, pattern#2...

[0116] In some embodiments of this disclosure, the method further includes configuring pattern-related information of different PBCH resource remapping patterns used in at least two different PBCH transmissions to the UE.

[0117] Among them, at least two different PBCH transmissions include: PBCH transmissions corresponding to any two or more SSB indices within the SSB set in the same SSB period; or PBCH transmissions corresponding to the same SSB index in at least two different SSB periods.

[0118] For example, the network device can configure or instruct the UE on the resource remapping pattern for each SSB transmission PBCH, such as indicating {Pattern 2, pattern 1}, or indicating the starting pattern as pattern#2. This means that for different SSB transmissions within a fixed period, the first PBCH is remapped according to pattern#2, the second PBCH is remapped according to pattern#1, and so on.

[0119] S304, send the first SSB to the UE with a first RB that matches the system bandwidth and / or channel bandwidth.

[0120] Wherein, the number of first RBs is equal to or less than the number of RBs corresponding to the maximum time-frequency resource supported by the system bandwidth and / or channel bandwidth.

[0121] In some embodiments of this disclosure, the method further includes: determining a first subcarrier index of a first RB where the first SSB is located, wherein the first subcarrier index is an offset relative to subcarrier 0 within the first RB.

[0122] In one implementation, a number of RBs near the center frequency point are selected as the first RB, and the subcarrier index of the first RB is redefined. The first subcarrier index of the first RB is equal to the subcarrier index of the second RB minus the offset, or the subcarrier index of the first SSB is equal to the subcarrier index of the second SSB minus the offset. The offset can be determined, but is not limited to, the following methods: offset = (20 - M) / 2 * 12, or offset = ceil((20 - M) / 2 * 12), or offset = floor((20 - M) / 2 * 12), where M is the actual number of RBs transmitting in the PBCH, i.e., the number of the first RBs.

[0123] In some embodiments of this disclosure, transmitting a first SSB to a UE using a first RB that matches the system bandwidth and / or channel bandwidth includes: retaining the symbol data carried by each subcarrier on the first RB after remapping at the center frequency point of the SSB, and setting the symbol data carried by each subcarrier on the first RB after remapping to 0; performing orthogonal frequency division multiplexing (OFDM) modulation according to the first subcarrier index of the first RB at the center frequency point of the SSB and its corresponding symbol data to transmit the first SSB to the UE.

[0124] In some embodiments of this disclosure, transmitting a first SSB to a UE using a first RB that matches the system bandwidth and / or channel bandwidth includes: determining a second subcarrier index of a second RB at the center frequency of the SSB; replacing the second subcarrier index with a first subcarrier index; and performing OFDM modulation according to the first subcarrier index of the first RB at the center frequency of the SSB and its corresponding remapped symbol data to transmit the first SSB to the UE.

[0125] In other words, during OFDM modulation, the original symbol data on the RBs that match the system bandwidth is retained, and the REs for the portion exceeding the system bandwidth are set to 0. OFDM modulation is performed according to the first subcarrier index at the center frequency of the SSB and its corresponding symbol data. Alternatively, in step 302, the subcarrier index at the center frequency of the SSB is determined based on the subcarrier index mapped from the second RB resources, and it is replaced with the first subcarrier index. OFDM modulation is then performed according to the first subcarrier index at the center frequency of the SSB and its corresponding remapped symbol data.

[0126] In summary, according to the communication control method provided in this disclosure, rate matching is performed based on the second RB to determine the length of the coded bit that matches the second RB, modulation is performed on the coded bit that matches the second RB, resource mapping is performed on the modulated symbol data based on the second RB to determine the transmission position of the symbol data that matches the second RB, and the symbol data that matches the second RB is remapped onto the first RB, so that the first RB that matches the system bandwidth and / or channel bandwidth can be used to send the first SSB to the UE. This proposes an SSB / PBCH transmission mode to match the system bandwidth and / or channel bandwidth of the dedicated spectrum, while ensuring the transmission performance of PBCH.

[0127] Figure 6 This is a flowchart illustrating a communication control method according to an embodiment of the present disclosure. The method is executed by a network device. Based on... Figure 1 The illustrated embodiment, as Figure 6 As shown, the method may include the following steps.

[0128] S401, determine the first subcarrier index of the first RB where the first SSB is located, where the first subcarrier index is the offset relative to subcarrier 0 in the first RB.

[0129] In other words, the index position of each subcarrier in the first RB where the first SSB is located is offset relative to the resource mapping table of the existing NR system's SSB structure. The reference point is subcarrier 0 in the first RB. The resource mapping table of the existing NR system's SSB time-frequency structure is shown in Table 1.

[0130] In one implementation, a number of RBs near the center frequency point are selected as the first RB, and the subcarrier index of the first RB is redefined. The first subcarrier index of the first RB is equal to the subcarrier index of the second RB minus the offset, or the subcarrier index of the first SSB is equal to the subcarrier index of the second SSB minus the offset. The offset can be determined, but is not limited to, the following methods: offset = (20 - M) / 2 * 12, or offset = ceil((20 - M) / 2 * 12), or offset = floor((20 - M) / 2 * 12), where M is the actual number of RBs transmitting in the PBCH, i.e., the number of the first RBs.

[0131] In some embodiments of this disclosure, the method further includes: determining a first RB, wherein the number of first RBs is equal to or less than the number of RBs corresponding to the maximum time-frequency resource supported by the system bandwidth and / or channel bandwidth.

[0132] It is understood that, in order to address the issue of existing protocol R18 supporting NR technology for communication services on a portion of the dedicated spectrum of LTE / GSM-R, the system bandwidth and / or channel bandwidth described in this disclosure include a dedicated network system bandwidth of 3 MHz and / or a dedicated network system bandwidth of 2.8 MHz to 3.6 MHz, and the first RB can be matched with a system bandwidth and / or channel bandwidth of 3 MHz and / or 2.8 MHz to 3.6 MHz.

[0133] For example, the first RB is matched with a system bandwidth and / or channel bandwidth of 3MHz. The number of available RBs for the 3MHz system bandwidth and / or channel bandwidth is 15, that is, the maximum supported time-frequency resources are 15. The number of the first RB is equal to or less than 15.

[0134] S402, perform rate matching based on the first RB to determine the length of the coded bits that match the first RB.

[0135] S403, modulate the coded bits that match the first RB, and perform resource mapping on the modulated symbol data according to the first RB and the first subcarrier index to determine the transmission location of the symbol data that matches the first RB.

[0136] S404, using the first RB, send the first SSB to the UE.

[0137] In other words, network devices perform rate matching, QPSK modulation, and resource mapping based on time-frequency resources that match the system bandwidth / terminal bandwidth (e.g., 3MHz system bandwidth, with SSB occupying 15 RBs in the frequency domain).

[0138] Specifically, rate matching is performed based on the SSB time-frequency resource structure of 15 RBs / PBCH time-frequency resource structure in the SSB, the output bit length is 594 bits, QPSK modulation is performed on the 594 coded bits, and the modulated symbol data is resource mapped to determine the transmission position of the symbol data. The resource mapping is performed according to the resource mapping table of the offset SSB time-frequency structure.

[0139] In some embodiments of this disclosure, rate matching based on the first RB includes: rate matching using the same coded bit start position for at least two different PBCH transmissions.

[0140] For example, based on the first RB that matches the system bandwidth / terminal bandwidth, taking a system bandwidth / terminal bandwidth of 3MHz and the number of first RBs as an example, the length of the encoded bits that match the transmission resources after rate matching is 594 bits, while the number of bits after Turbo encoding is 512, and there are still 82 bits that need to be repeated. For at least two different PBCH transmissions, the same encoded bit starting position is used for rate matching, for example, both are performed at the 0 bit starting position. In one PBCH transmission, bit #0 is positioned as the starting position, and the PBCH transmission proceeds from 0 to 512, and then from 0 to 82. In other different PBCH transmissions, the encoded bit #0 is also positioned as the starting position, and the PBCH transmission proceeds from 0 to 512, and then from 0 to 82.

[0141] Among them, at least two different PBCH transmissions include: PBCH transmissions corresponding to any two or more SSB indices within the SSB set in the same SSB period; or PBCH transmissions corresponding to the same SSB index in at least two different SSB periods.

[0142] For example, in a PBCH transmission that repeats four cycles within 80ms, four different SSB indices are sent within the same cycle. Rate matching can be achieved by using the same starting position of the encoded bits in the PBCH transmissions corresponding to two or more SSB indices within the same cycle. For instance, the PBCH transmissions corresponding to the first and second SSB indices can both use bit #0 as the starting position of the encoded bits. Alternatively, rate matching can be achieved by using the same starting position of the encoded bits in the PBCH transmissions corresponding to the same SSB index across at least two different SSB cycles. For example, the PBCH transmissions corresponding to the first SSB index in the first cycle and the PBCH transmissions corresponding to the first SSB index in the third cycle can both use bit #0 as the starting position of the encoded bits.

[0143] In some embodiments of this disclosure, rate matching based on the first RB includes: rate matching with different coded bit start positions for at least two different PBCH transmissions, wherein the different coded bit start positions used for rate matching depend on the length of the coded bits that match the system bandwidth and / or channel bandwidth.

[0144] For example, based on the first RB that matches the system bandwidth / terminal bandwidth, taking a system bandwidth / terminal bandwidth of 3MHz and the number of first RBs as an example, the length of the encoded bits that match the transmission resources after rate matching is 594 bits, and the number of bits after Turbo encoding is 512. For at least two different PBCH transmissions, different encoding bit start positions are used for rate matching. In one PBCH transmission, bit #0 is positioned as the start position, and the PBCH transmission proceeds from 0 to 512, and then from 0 to 82. In other different PBCH transmissions, encoding bit #82 is positioned as the start position, and the PBCH transmission proceeds from 82 to 512, and then from 0 to 164.

[0145] Among them, at least two different PBCH transmissions include: PBCH transmissions corresponding to any two or more SSB indices within the SSB set in the same SSB period; or PBCH transmissions corresponding to the same SSB index in at least two different SSB periods.

[0146] For example, in a PBCH transmission that repeats four cycles within 80ms, four different SSB indices are sent within the same cycle. Rate matching can be achieved by using different coded bit start positions in the PBCH transmissions corresponding to two or more SSB indices within the same cycle. For instance, the coded bit start position could be bit #0 for the first SSB index, and bit #82 for the PBCH transmission corresponding to the second SSB index. Alternatively, rate matching can be achieved by using the same coded bit start position in the PBCH transmissions corresponding to the same SSB index across at least two different SSB cycles. For example, the coded bit start position could be bit #0 for the PBCH transmission corresponding to the first SSB index in the first cycle, and bit #82 for the PBCH transmission corresponding to the first SSB index in the third cycle.

[0147] In some embodiments of this disclosure, the method further includes: sending rate-matched coded bit start position configuration signaling to the UE for at least two different PBCH transmissions.

[0148] Among them, at least two different PBCH transmissions include: PBCH transmissions corresponding to any two or more SSB indices within the SSB set in the same SSB period; or PBCH transmissions corresponding to the same SSB index in at least two different SSB periods.

[0149] In other words, for PBCH transmissions corresponding to any two or more SSB indices within the same SSB set during the same SSB period, or for PBCH transmissions corresponding to the same SSB indexes during at least two different SSB periods, the network device configures or indicates the start position of the rate-matched coded bits for each SSB transmission PBCH.

[0150] In summary, according to the communication control method provided in this disclosure, rate matching is performed based on the first RB to determine the length of the coded bit matched with the first RB, modulation is performed on the coded bit matched with the first RB, resource mapping is performed on the modulated symbol data based on the first RB and the first subcarrier index to determine the transmission position of the symbol data matched with the first RB, and the first SSB is sent to the UE using the first RB. This proposes an SSB / PBCH transmission mode to match the system bandwidth and / or channel bandwidth of the dedicated spectrum, while ensuring the transmission performance of PBCH.

[0151] Figure 7 This is a flowchart illustrating a communication control method according to an embodiment of the present disclosure. The method is executed by a user equipment (UE), which includes, but is not limited to, smart terminal devices, cellular phones, wireless devices, handheld devices, mobile units, vehicles, and in-vehicle equipment; this disclosure does not limit the scope of the application.

[0152] like Figure 7 As shown, the method may include the following steps.

[0153] S501, receive a first synchronization broadcast block SSB corresponding to a first RB that matches the system bandwidth and / or channel bandwidth sent by the network device, wherein the first SSB includes at least the physical broadcast channel PBCH.

[0154] The number of first RBs is less than the number of second RBs, and the second RBs are time-frequency resources for transmitting the second SSB.

[0155] In embodiments of this disclosure, the system bandwidth and / or channel bandwidth may also be available bandwidth resources, which are not limited in this disclosure.

[0156] In embodiments of this disclosure, the second RB is used to transmit the second SSB, which is matched with the current protocol; the first RB is used to transmit the first SSB, which is matched with the system bandwidth and / or channel bandwidth. The number of first RBs is less than the number of second RBs, that is, the time-frequency resources supported by the system bandwidth or channel bandwidth in this disclosure are lower than the time-frequency resources for SSB transmission supported by the current protocol.

[0157] It should be noted that in the existing NR system, the SSB occupies 20 RBs in the frequency domain, the Physical Broadcast Channel (PBCH) occupies 20 RBs in the frequency domain, and the PSS (Primary Synchronization Signal) and SSS (Secondary Synchronization Signal) each occupy 127 REs in the frequency domain.

[0158] Furthermore, the time-frequency resources of the second SSB are the time-frequency resources that support the transmission of SSBs in the existing NR protocol R15 / 16 / 17. The SSB transmission in the existing NR protocol occupies 20 RBs in the frequency domain. That is to say, the number of RBs in the second SSB is the number of RBs occupied by the second SSB in the frequency domain, or the number of RBs occupied by the PBCH in the second SSB in the frequency domain, which is 20.

[0159] In embodiments of this disclosure, the time-frequency resources supported by the system bandwidth or channel bandwidth are lower than the time-frequency resources occupied by SSB transmission supported by the current protocol. For example, the system bandwidth or channel bandwidth of some dedicated spectrum is 3MHz and 2.8MHz to 3.6MHz, supporting fewer than 20 RBs.

[0160] Furthermore, the time-frequency resources of the first SSB are time-frequency resources that match the system bandwidth / channel bandwidth. For example, the first RB matches the system bandwidth of 3MHz. According to the LTE specification for RF channel bandwidth, there are 15 available RBs in 3MHz, which does not support SSB transmission in the existing NR system (which occupies 20 RBs in the frequency domain). The number of the first NR is the number of RBs occupied by the first SSB in the frequency domain, or the number of RBs occupied by the PBCH in the first SSB in the frequency domain, with a maximum of 15.

[0161] In summary, according to the communication control method provided in the embodiments of this disclosure, a first synchronous broadcast block (SSB) corresponding to a first RB that matches the system bandwidth and / or channel bandwidth is received from a network device. The first SSB includes at least a physical broadcast channel (PBCH). The number of first RBs is less than the number of second RBs. The second RBs are time-frequency resources for transmitting the second SSB. This proposes an SSB transmission method that uses dedicated spectrum system bandwidth and / or channel bandwidth.

[0162] Figure 8A flowchart illustrating a communication control method according to an embodiment of this disclosure is shown. This method is applied to a UE, based on... Figure 7 The illustrated embodiment, as Figure 8 As shown, the method may include the following steps.

[0163] S601, receiving a first SSB corresponding to a first RB that matches the system bandwidth and / or channel bandwidth sent by a network device, wherein the first SSB includes at least a PBCH.

[0164] In some embodiments of this disclosure, the method further includes: performing OFDM demodulation on the PBCH; determining the RE index reordering method of the first SSB according to the protocol agreement; and determining the transmission position of the symbol data that matches the second RB where the OFDM demodulated symbol is located based on the RE index position and RE index reordering method of the second SSB.

[0165] It is understandable that, on the network device side, the RE index of the second SSB is reordered to determine the RE index of the first SSB. The UE can determine the reordering method of the RE index of the first SSB according to the protocol. Based on the RE index position of the second SSB and the RE index reordering method of the first SSB, the transmission position of the symbol data that matches the second RB where the OFDM demodulation symbol is located is determined.

[0166] In one implementation, prior to OFDM demodulation, the received PBCH may be digitally filtered according to a filter matching the system bandwidth and / or channel bandwidth to eliminate subcarrier interference between the network with the current system bandwidth and / or channel bandwidth and its neighboring networks. Further, after obtaining the filtered received PBCH and performing OFDM demodulation, the frequency domain positions matching the terminal channel bandwidth / system bandwidth remain unchanged, while other positions are set to 0.

[0167] S602, De-resolve resource mapping and de-rate matching based on the second RB.

[0168] In some embodiments of this disclosure, before performing de-resource mapping and de-rate matching based on the second RB, the method further includes: performing de-resource remapping on the symbolic data on the first RB.

[0169] It is understandable that, corresponding to Figure 4 In step S303 of the illustrated embodiment, the symbol data matching the second RB is remapped to the first RB. Since the transmission location of the symbol data has changed, de-resource mapping and de-rate matching cannot be directly performed based on the second RB. Therefore, de-resource remapping of the symbol data on the first RB is required. In other words, the reverse process of resource remapping corresponding to the network device side is executed to determine the original resource location of the symbol data.

[0170] Furthermore, corresponding to Figure 2 and Figure 4 In the illustrated embodiment, when the network device performs rate matching, QPSK modulation, and resource mapping based on the second RB, the UE, after receiving the first SSB sent by the network device, performs de-resource mapping and de-rate matching based on the second RB. In other words, de-rate matching and de-resource mapping are performed based on the time-frequency resources that support SSB transmission in the existing NR protocols R15 / 16 / 17.

[0171] In some embodiments of this disclosure, the method further includes: performing separate decoding or combined decoding for at least two different PBCH transmissions.

[0172] For example, for at least two different PBCH transmissions, the rate-matched contents of the at least two different PBCH transmissions can be superimposed and decoded together, or each received PBCH transmission can be decoded separately.

[0173] It should be noted that repeated PBCH transmissions will occur within the SSB transmission period, for example, four repeated PBCH transmissions every 80 milliseconds. The UE can improve PBCH transmission performance by merging and decoding two or more PBCH receptions.

[0174] In some embodiments of this disclosure, merging and decoding for at least two different PBCH transmissions includes: merging and decoding for at least two different PBCH transmissions using different PBCH resource remapping patterns in the initial access state, according to a preset pattern order.

[0175] It should be noted that, corresponding to Figure 4 In the embodiment shown, the network device uses different PBCH resource remapping patterns for at least two different PBCH transmissions. Considering that the UE cannot know which PBCH it is receiving at the current moment in the initial access state, blind merging decoding is performed, that is, merging and decoding are performed in a preset pattern order.

[0176] For example, for two PBCH receptions, consider first performing de-resource mapping and de-rate matching according to {pattern 1, pattern#2} corresponding to the successively received {PBCH#1, PBCH#2}, and then performing HARQ merging. If decoding fails, perform de-resource mapping and de-rate matching again according to {pattern#2, pattern#1} corresponding to the successively received {PBCH#1, PBCH#2}, and then perform merging decoding.

[0177] It should be noted that if the network device uses two or more remapping patterns for PBCH transmission, and the UE attempts to decode a single PBCH reception, it can consider using a blind decoding method that matches two or more resource remapping patterns.

[0178] In some embodiments of this disclosure, merging and decoding for at least two different PBCH transmissions includes: for at least two different PBCH transmissions using different PBCH resource remapping patterns, merging and decoding is performed in a non-initial access state according to pattern-related information agreed upon in the protocol or configured by the network device.

[0179] In other words, the UE can learn the resource remapping pattern associated with each received PBCH according to the protocol's predefined rules or the network device's configuration, and then merge and decode the received PBCHs using the resource remapping pattern associated with them.

[0180] In some embodiments of this disclosure, the method further includes: receiving pattern-related information of different PBCH resource remapping patterns used by at least two different PBCH transmissions sent by a network device.

[0181] It is understandable that, corresponding to Figure 4 In the illustrated embodiment, the network device configures pattern-related information of different PBCH resource remapping patterns used by at least two different PBCH transmissions to the UE. The UE receives the configuration information and can then merge and decode at least two different PBCH transmissions based on the pattern-related information of the different PBCH resource remapping patterns used by the at least two different PBCH transmissions.

[0182] In some embodiments of this disclosure, the method further includes: determining the PBCH resource remapping pattern used for each PBCH transmission based on pattern-related information and downlink timing.

[0183] In other words, based on the downlink timing and pattern information transmitted on the PBCH, the UE can determine which PBCH it is currently receiving and the corresponding PBCH resource remapping pattern.

[0184] In some embodiments of this disclosure, the above-mentioned at least two different PBCH transmissions include: PBCH transmissions corresponding to any two or more SSB indices within the SSB set in the same SSB period; or PBCH transmissions corresponding to the same SSB index in at least two different SSB periods.

[0185] For example, PBCH transmissions are repeated for 4 cycles within 80ms. Within the same cycle, PBCH transmissions send 4 different SSB indices. At least two different PBCH transmissions can refer to PBCH transmissions corresponding to any 2, 3, or 4 different SSB indices within the same cycle, or PBCH transmissions corresponding to the same SSB index in any 2, 3, or 4 different cycles.

[0186] In summary, according to the communication control method provided in the embodiments of this disclosure, the UE receives a first SSB corresponding to a first RB that matches the system bandwidth and / or channel bandwidth sent by the network device, performs de-resource mapping and de-rate matching according to the second RB, and performs separate decoding or combined decoding for at least two different PBCH transmissions. This proposes an SSB / PBCH transmission mode to match the system bandwidth and / or channel bandwidth of the dedicated spectrum, while ensuring the transmission performance of PBCH.

[0187] Figure 9 A flowchart illustrating a communication control method according to an embodiment of this disclosure is shown. This method is applied to a UE, based on... Figure 7 The illustrated embodiment, as Figure 9 As shown, the method may include the following steps.

[0188] S701, receive a first synchronization broadcast block SSB corresponding to a first RB that matches the system bandwidth and / or channel bandwidth sent by a network device, wherein the first SSB includes at least a physical broadcast channel PBCH.

[0189] In some embodiments of this disclosure, the method further includes: performing OFDM demodulation on the PBCH; determining the RE index reordering method of the first SSB according to the protocol agreement; and determining the transmission position of the symbol data that matches the second RB where the OFDM demodulated symbol is located based on the RE index position and RE index reordering method of the second SSB.

[0190] It is understandable that, on the network device side, the RE index of the second SSB is reordered to determine the RE index of the first SSB. The UE can determine the reordering method of the RE index of the first SSB according to the protocol. Based on the RE index position of the second SSB and the RE index reordering method of the first SSB, the transmission position of the symbol data that matches the second RB where the OFDM demodulation symbol is located is determined.

[0191] In one implementation, prior to OFDM demodulation, the received PBCH may be digitally filtered according to a filter matching the system bandwidth and / or channel bandwidth to eliminate subcarrier interference between the network with the current system bandwidth and / or channel bandwidth and its neighboring networks. Further, after obtaining the filtered received PBCH and performing OFDM demodulation, the frequency domain positions matching the terminal channel bandwidth / system bandwidth remain unchanged, while other positions are set to 0.

[0192] S702, De-resolve resource mapping and de-rate matching based on the first RB.

[0193] It is understandable that, corresponding to Figure 6 In the illustrated embodiment, where the network device performs rate matching, QPSK modulation, and resource mapping based on the first RB, the UE, after receiving the first SSB sent by the network device, performs de-resource mapping and de-rate matching based on the first RB. In other words, de-rate matching and de-resource mapping are performed based on time-frequency resources that match the system bandwidth and / or channel bandwidth.

[0194] In some embodiments of this disclosure, the method further includes: performing separate decoding or combined decoding for at least two different PBCH transmissions.

[0195] For example, for at least two different PBCH transmissions, the rate-matched contents of the at least two different PBCH transmissions can be superimposed and decoded together, or each received PBCH transmission can be decoded separately.

[0196] It should be noted that repeated PBCH transmissions will occur within the SSB transmission period, for example, four repeated PBCH transmissions every 80 milliseconds. The UE can improve PBCH transmission performance by merging and decoding two or more PBCH receptions.

[0197] In some embodiments of this disclosure, merging and decoding for at least two different PBCH transmissions includes: merging and decoding for at least two different PBCH transmissions using different cyclic orders of coded bit start positions in the initial access state, using a preset cyclic order of coded bit start positions.

[0198] It should be noted that, corresponding to Figure 6 In the embodiment shown, the network device performs rate matching using different encoding bit start positions for at least two different PBCH transmissions. Considering that the UE cannot know which PBCH it is receiving at the current moment in the initial access state, blind merging decoding is performed, that is, merging decoding is performed in a cyclical order of preset encoding bit start positions.

[0199] For example, for PBCH#1 and PBCH#2, first assume that the starting position of the encoded bits is in the cyclic order of A and B and try to merge and decode them; if the attempt fails, then swap the starting position of the encoded bits in the cyclic order and try to merge and decode them again.

[0200] It should be noted that if the network device uses two or more remapping patterns for PBCH transmission, and the UE attempts to decode a single PBCH reception, it can consider using a blind decoding method that matches two or more resource remapping patterns.

[0201] In some embodiments of this disclosure, merging and decoding for at least two different PBCH transmissions includes: for at least two different PBCH transmissions using different cyclic orders of coded bit start positions, merging and decoding is performed in a non-initial access state according to the cyclic order of coded bit start positions agreed upon by the protocol or configured by the network device.

[0202] In other words, the UE can determine the cyclic order of the starting position of the encoded bits associated with each received PBCH according to the protocol's predefined rules or the network device's configuration, and then perform merging and decoding based on the cyclic order of the starting position of the encoded bits associated with the received PBCH.

[0203] In some embodiments of this disclosure, the method further includes receiving different cyclic sequences of coded bit start positions used in at least two different PBCH transmissions sent by a network device.

[0204] It is understandable that, corresponding to Figure 6 In the illustrated embodiment, the network device sends configuration signaling to the UE for different coded bit start positions used in at least two different PBCH transmissions. The UE receives the configuration signaling and can then merge and decode the at least two different PBCH transmissions according to the cyclic order of the different coded bit start positions used in the at least two different PBCH transmissions.

[0205] In some embodiments of this disclosure, the method further includes: determining the starting position of the encoded bits used for each PBCH rate matching based on the cyclic order of the starting positions of the encoded bits and the downlink timing.

[0206] In other words, the UE can determine which PBCH it is receiving at the current moment and the corresponding cyclic sequence of the starting position of the encoded bits based on the downlink timing and cyclic sequence of the PBCH transmission.

[0207] In some embodiments of this disclosure, the above-mentioned at least two different PBCH transmissions include: PBCH transmissions corresponding to any two or more SSB indices within the SSB set in the same SSB period; or PBCH transmissions corresponding to the same SSB index in at least two different SSB periods.

[0208] For example, PBCH transmissions are repeated for 4 cycles within 80ms. Within the same cycle, PBCH transmissions send 4 different SSB indices. At least two different PBCH transmissions can refer to PBCH transmissions corresponding to any 2, 3, or 4 different SSB indices within the same cycle, or PBCH transmissions corresponding to the same SSB index in any 2, 3, or 4 different cycles.

[0209] In summary, according to the communication control method provided in the embodiments of this disclosure, the UE receives a first SSB corresponding to a first RB that matches the system bandwidth and / or channel bandwidth sent by the network device, performs de-resource mapping and de-rate matching based on the first RB, and performs separate decoding or combined decoding for at least two different PBCH transmissions. This proposes an SSB / PBCH transmission mode to match the system bandwidth and / or channel bandwidth of the dedicated spectrum while ensuring the transmission performance of PBCH.

[0210] Figure 10 An interactive schematic diagram of a communication control method according to an embodiment of the present disclosure is shown. Figure 10 As shown, this embodiment involves data / signaling interaction between a network device and a user equipment (UE) during the execution of a communication control method. Based on Figures 1 to 9 The embodiment shown includes the following steps.

[0211] S801, the network device sends a first synchronization broadcast block (SSB) to the user equipment (UE) with a first resource block (RB) that matches the system bandwidth and / or channel bandwidth, wherein the first SSB includes at least the physical broadcast channel (PBCH).

[0212] S802, the network device configures the UE with pattern-related information of different PBCH resource remapping patterns used in at least two different PBCH transmissions.

[0213] S803, for at least two different PBCH transmissions, the network device sends a PBCH transmission rate matching coded bit start position configuration signaling to the UE.

[0214] S804, the UE performs de-resource mapping and de-rate matching based on the first RB and / or the second RB.

[0215] S805, the UE performs separate decoding or combined decoding for at least two different PBCH transmissions.

[0216] It should be noted that S802, S803, S804, and S805 are optional steps.

[0217] When S802 is executed, the UE performs de-resource mapping and de-rate matching based on the second RB. Step S805 includes: for at least two different PBCH transmissions that use different PBCH resource remapping patterns, in the initial access state, the UE performs merging and decoding according to a preset pattern order; in the non-initial access state, the UE performs merging and decoding according to pattern-related information agreed upon by the protocol or configured by the network device.

[0218] When S803 is executed, the UE performs de-resource mapping and de-rate matching based on the first RB. Step S805 includes, for at least two different PBCH transmissions using different cyclic orders of coded bit start positions, in the initial access state, the UE performs merging and decoding according to the preset cyclic order of coded bit start positions, and in the non-initial access state, the UE performs merging and decoding according to the cyclic order of coded bit start positions agreed upon by the protocol or configured by the network device.

[0219] The above steps S801-S804 and Figures 1 to 9 The principles behind the steps described herein can be found in [reference needed]. Figures 1 to 6 This will not be elaborated upon here.

[0220] In summary, according to the communication control method provided in the embodiments of this disclosure, the network device sends a first SSB to the user equipment UE with a first RB that matches the system bandwidth and / or channel bandwidth. The first SSB includes at least a physical broadcast channel PBCH. For at least two different PBCH transmissions, the UE performs separate decoding or combined decoding. This proposes an SSB / PBCH transmission mode to match the system bandwidth and / or channel bandwidth of the dedicated spectrum and ensure the transmission performance of PBCH.

[0221] In the embodiments provided above, the methods provided by the embodiments of this application are described on both the network device side and the user equipment side. To implement the functions of the methods provided in the embodiments of this application, the network device and the user equipment may include hardware structures and software modules, implementing the above functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. One of the above functions can be executed in the form of hardware structures, software modules, or a combination of hardware structures and software modules.

[0222] Corresponding to the communication control methods provided in the above embodiments, this disclosure also provides a communication control device. Since the communication control device provided in this disclosure corresponds to the communication control methods provided in the above embodiments, the implementation methods of the communication control methods are also applicable to the communication control device provided in this embodiment, and will not be described in detail in this embodiment.

[0223] Figure 11 This is a schematic diagram of the structure of a communication control device 900 provided in an embodiment of the present disclosure. The communication control device 900 can be used in network devices.

[0224] like Figure 11 As shown, the device 900 may include:

[0225] The transceiver module 910 is used to send a first synchronization broadcast block (SSB) to the user equipment (UE) with a first resource block (RB) that matches the system bandwidth and / or channel bandwidth. The first SSB includes at least a physical broadcast channel (PBCH), wherein the number of first RBs is less than the number of second RBs, and the second RBs are time-frequency resources for transmitting the second SSB.

[0226] According to the communication control device provided in the embodiments of this disclosure, a first synchronization broadcast block (SSB) is sent to a user equipment (UE) with a first resource block (RB) that matches the system bandwidth and / or channel bandwidth. The first SSB includes at least a physical broadcast channel (PBCH). The number of first RBs is less than the number of second RBs. The second RBs are time-frequency resources for transmitting the second SSB. An SSB / PBCH transmission mode is proposed to match the system bandwidth and / or channel bandwidth of the dedicated spectrum.

[0227] In some embodiments of this disclosure, such as Figure 12 As shown, the device also includes a determining module 920 for determining the first subcarrier index of the first RB where the first SSB is located, wherein the first subcarrier index is an offset relative to subcarrier 0 within the first RB.

[0228] In some embodiments of this disclosure, the determining module 920 is further configured to: perform rate matching based on the second RB to determine the length of the coded bit matched with the second RB; modulate the coded bit matched with the second RB; and perform resource mapping on the modulated symbol data based on the second RB to determine the transmission location of the symbol data matched with the second RB.

[0229] In some embodiments of this disclosure, the transceiver module 910 is specifically configured to: select the transmission position of a number of symbols of the first number of RBs at the center frequency point of the SSB from the transmission positions of symbols that match the second RB, so as to send the first SSB to the UE.

[0230] In some embodiments of this disclosure, the transceiver module 910 is specifically configured to: retain the symbol data carried by each subcarrier on the first RB at the center frequency point of the SSB, and set the symbol data exceeding the number carried by each subcarrier on the first RB to 0; perform orthogonal frequency division multiplexing (OFDM) modulation according to the first subcarrier index of the first RB at the center frequency point of the SSB and its corresponding symbol data, so as to transmit the first SSB to the UE.

[0231] In some embodiments of this disclosure, the transceiver module 910 is specifically configured to: determine the second subcarrier index of the second RB at the center frequency of the SSB; replace the second subcarrier index with the first subcarrier index; and perform OFDM modulation according to the first subcarrier index of the first RB at the center frequency of the SSB and its corresponding symbol data to transmit the first SSB to the UE.

[0232] In some embodiments of this disclosure, such as Figure 13 As shown, it also includes a remapping module 930, which performs resource mapping on the modulated symbol data according to the second RB to determine the transmission position of the symbol data matching the second RB. The remapping module 930 is used to remap the symbol data matching the second RB to the first RB.

[0233] In some embodiments of this disclosure, the remapping module 930 is specifically used to: for at least two different PBCH transmissions, use different PBCH resource remapping patterns to remap symbol data that matches the second RB to the first RB.

[0234] In some embodiments of this disclosure, the transceiver module 910 is further configured to: configure pattern-related information of different PBCH resource remapping patterns used in at least two different PBCH transmissions to the UE.

[0235] In some embodiments of this disclosure, the transceiver module 910 is specifically configured to: retain the symbol data carried by each subcarrier on the first RB after remapping at the center frequency point of the SSB, and set the symbol data carried by each subcarrier on the first RB after remapping to 0; perform orthogonal frequency division multiplexing (OFDM) modulation according to the first subcarrier index of the first RB at the center frequency point of the SSB and its corresponding symbol data, so as to transmit the first SSB to the UE.

[0236] In some embodiments of this disclosure, the transceiver module 910 is specifically configured to: determine the second subcarrier index of the second RB at the center frequency point of the SSB; replace the second subcarrier index with the first subcarrier index; and perform OFDM modulation according to the first subcarrier index of the first RB at the center frequency point of the SSB and its corresponding remapped symbol data to transmit the first SSB to the UE.

[0237] In some embodiments of this disclosure, the determining module 920 is further configured to: perform rate matching based on the first RB to determine the length of the coded bit matched with the first RB; modulate the coded bit matched with the first RB; and perform resource mapping on the modulated symbol data based on the first RB and the first subcarrier index to determine the transmission location of the symbol data matched with the first RB.

[0238] In some embodiments of this disclosure, rate matching based on the first RB includes: rate matching using the same coded bit start position for at least two different PBCH transmissions.

[0239] In some embodiments of this disclosure, rate matching based on the first RB includes: rate matching with different coded bit start positions for at least two different PBCH transmissions, wherein the different coded bit start positions used for rate matching depend on the length of the coded bits that match the system bandwidth and / or channel bandwidth.

[0240] In some embodiments of this disclosure, the transceiver module 910 is further configured to: send a rate-matched coded bit start position configuration signaling for at least two different PBCH transmissions to the UE.

[0241] In some embodiments of this disclosure, at least two different PBCH transmissions include: PBCH transmissions corresponding to any two or more SSB indices within the SSB set in the same SSB period; or PBCH transmissions corresponding to the same SSB index in at least two different SSB periods.

[0242] In some embodiments of this disclosure, the determining module 920 is further configured to: determine a first RB, wherein the number of first RBs is equal to or less than the number of RBs corresponding to the maximum time-frequency resource supported by the system bandwidth and / or channel bandwidth.

[0243] In summary, according to the communication control apparatus provided in the embodiments of this disclosure, the network device sends a first SSB to the user equipment (UE) with a first RB that matches the system bandwidth and / or channel bandwidth. The first SSB includes at least a physical broadcast channel (PBCH). For at least two different PBCH transmissions, the UE performs separate decoding or combined decoding. This proposes an SSB / PBCH transmission method to match the system bandwidth and / or channel bandwidth of the dedicated spectrum and ensure the transmission performance of PBCH.

[0244] Figure 14 is a schematic diagram of a communication control device 1000 provided in an embodiment of this disclosure. This communication control device 1000 can be used in a user equipment (UE).

[0245] As shown in Figure 14, the device 1000 may include:

[0246] The transceiver module 1010 is used to receive a first synchronization broadcast block (SSB) sent by a network device, which corresponds to a first RB that matches the system bandwidth and / or channel bandwidth. The first SSB includes at least a physical broadcast channel (PBCH). The number of first RBs is less than the number of second RBs, and the second RBs are time-frequency resources for transmitting the second SSB.

[0247] According to the communication control device provided in the embodiments of this disclosure, a first synchronous broadcast block (SSB) corresponding to a first RB that matches the system bandwidth and / or channel bandwidth is sent by a network device. The first SSB includes at least a physical broadcast channel (PBCH). The number of first RBs is less than the number of second RBs. The second RB is the time-frequency resource for transmitting the second SSB. An SSB transmission method is proposed to match the system bandwidth and / or channel bandwidth of the dedicated spectrum.

[0248] In some embodiments of this disclosure, the method further includes: performing OFDM demodulation on the PBCH; determining the RE index reordering method of the first SSB according to the protocol, and determining the transmission position of the symbol data that matches the second RB based on the RE index position and RE index reordering method of the second SSB.

[0249] In some embodiments of this disclosure, the method further includes: de-resource mapping and de-rate matching based on the second RB.

[0250] In some embodiments of this disclosure, the method further includes: performing de-resource mapping and de-rate matching based on the first RB.

[0251] In some embodiments of this disclosure, the method further includes: performing separate decoding or combined decoding for at least two different PBCH transmissions.

[0252] In some embodiments of this disclosure, merging and decoding for at least two different PBCH transmissions includes: for at least two different PBCH transmissions using different PBCH resource remapping patterns, merging and decoding are performed in the initial access state according to a preset pattern order and / or the cyclic order of the starting positions of the encoded bits.

[0253] In some embodiments of this disclosure, merging and decoding for at least two different PBCH transmissions includes: for at least two different PBCH transmissions using different PBCH resource remapping patterns, in a non-initial access state, merging and decoding is performed according to pattern-related information agreed upon by the protocol or configured by the network device and / or the cyclic order of the starting positions of encoded bits agreed upon by the protocol or configured by the network device.

[0254] In some embodiments of this disclosure, the transceiver module 1010 is further configured to: receive pattern-related information and / or coded bit start position cycle order of different PBCH resource remapping patterns used by at least two different PBCH transmissions sent by the network device.

[0255] In some embodiments of this disclosure, the method further includes: determining the PBCH resource remapping pattern used for each PBCH transmission based on pattern-related information and downlink timing.

[0256] In some embodiments of this disclosure, the method further includes: determining the starting position of the encoded bits used for each PBCH rate matching based on the cyclic order of the starting position of the encoded bits and the downlink timing.

[0257] In some embodiments of this disclosure, at least two different PBCH transmissions include: PBCH transmissions corresponding to any two or more SSB indices within the SSB set in the same SSB period; or PBCH transmissions corresponding to the same SSB index in at least two different SSB periods.

[0258] In some embodiments of this disclosure, before performing de-resource mapping and de-rate matching based on the second RB, the method further includes: performing de-resource remapping on the symbolic data on the first RB.

[0259] In summary, according to the communication control device provided in the embodiments of this disclosure, the UE receives a first synchronization broadcast block (SSB) corresponding to a first RB that matches the system bandwidth and / or channel bandwidth sent by the network device. The first SSB includes at least a physical broadcast channel (PBCH). The number of first RBs is less than the number of second RBs. The second RBs are time-frequency resources for transmitting the second SSB. Resource mapping and rate matching are de-mapped based on the first RBs and / or the second RBs. For at least two different PBCH transmissions, separate decoding or combined decoding is performed. This proposes an SSB / PBCH transmission method to match the system bandwidth and / or channel bandwidth of the dedicated spectrum and ensure the transmission performance of the PBCH.

[0260] Embodiments of this disclosure also provide a communication system applied to a core network. This communication system may be a long-term evolution (LTE) system, a 5th generation (5G) mobile communication system, a 5G new radio (NR) system, or other future new mobile communication systems.

[0261] The communication system includes a network device and a user equipment (UE), wherein the network device transmits a first SSB to the UE using a first RB that matches the system bandwidth and / or channel bandwidth, the first SSB including at least a physical broadcast channel (PBCH).

[0262] Network devices are used to perform, for example Figure 1 , Figure 2 , Figure 4 as well as Figure 6 The method of the illustrated embodiment, the UE is used to perform as follows Figure 7 , Figure 8 as well as Figure 9 The method of the illustrated embodiment.

[0263] In summary, according to the communication control method provided in the embodiments of this disclosure, the network device sends a first SSB to the user equipment UE with a first RB that matches the system bandwidth and / or channel bandwidth. The first SSB includes at least a physical broadcast channel PBCH. An SSB / PBCH transmission mode is proposed to match the system bandwidth and / or channel bandwidth of the dedicated spectrum and ensure the transmission performance of PBCH.

[0264] Please see Figure 15 , Figure 15 This is a schematic diagram of the structure of a communication device 1100 provided in an embodiment of this application. The communication device 1100 can be a network device, a user device, a chip, chip system, or processor that supports the network device in implementing the above methods, or a chip, chip system, or processor that supports the user device in implementing the above methods. This device can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0265] The communication device 1100 may include one or more processors 1101. The processor 1101 may be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control the communication device (e.g., base station, baseband chip, terminal equipment, terminal equipment chip, DU or CU, etc.), execute computer programs, and process data from the computer programs.

[0266] Optionally, the communication device 1100 may further include one or more memories 1102, which may store a computer program 1104. The processor 1101 executes the computer program 1104 to cause the communication device 1100 to perform the methods described in the above method embodiments. Optionally, the memory 1102 may also store data. The communication device 1100 and the memory 1102 may be provided separately or integrated together.

[0267] Optionally, the communication device 1100 may also include a transceiver 1105 and an antenna 1106. The transceiver 1105 may be referred to as a transceiver unit, transceiver, or transceiver circuit, etc., and is used to implement the transmission and reception functions. The transceiver 1105 may include a receiver and a transmitter. The receiver may be referred to as a receiver or receiving circuit, etc., and is used to implement the receiving function; the transmitter may be referred to as a transmitter or transmitting circuit, etc., and is used to implement the transmitting function.

[0268] Optionally, the communication device 1100 may further include one or more interface circuits 1107. The interface circuit 1107 is used to receive code instructions and transmit them to the processor 1101. The processor 1101 executes the code instructions to cause the communication device 1100 to perform the method described in the above method embodiments.

[0269] In one implementation, the processor 1101 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing receiving and transmitting functions may be separate or integrated. The aforementioned transceiver circuit, interface, or interface circuit can be used for reading and writing code / data, or it can be used for transmitting or relaying signals.

[0270] In one implementation, processor 1101 may store computer program 1103, which runs on processor 1101 and causes communication device 1100 to execute the methods described in the above method embodiments. Computer program 1103 may be embedded in processor 1101, in which case processor 1101 may be implemented in hardware.

[0271] In one implementation, the communication device 1100 may include circuitry capable of performing the functions of transmitting, receiving, or communicating as described in the aforementioned method embodiments. The processor and transceiver described in this application can be implemented on integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application-specific integrated circuits (ASICs), printed circuit boards (PCBs), electronic devices, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal-oxide-semiconductor (CMOS), n-metal-oxide-semiconductor (NMOS), p-type metal-oxide-semiconductor (PMOS), bipolar junction transistors (BJTs), bipolar CMOS (BiCMOS), silicon-germanium (SiGe), gallium arsenide (GaAs), etc.

[0272] The communication device described in the above embodiments may be a network device or a user equipment, but the scope of the communication device described in this application is not limited thereto, and the structure of the communication device may vary. Figure 10 The communication device can be a standalone device or part of a larger device. For example, the communication device could be:

[0273] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0274] (2) A collection of one or more ICs, optionally including storage components for storing data and computer programs;

[0275] (3) ASIC, such as modem;

[0276] (4) Modules that can be embedded in other devices;

[0277] (5) Receivers, terminal equipment, smart terminal equipment, cellular phones, wireless equipment, handheld devices, mobile units, vehicle-mounted equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.

[0278] (6) Others, etc.

[0279] For cases where the communication device can be a chip or a chip system, please refer to [link / reference]. Figure 16 The diagram shows the structure of the chip. Figure 16 The chip shown includes a processor 1201 and an interface 1202. There can be one or more processors 1201, and multiple interfaces 1202.

[0280] Optionally, the chip also includes a memory 1203 for storing necessary computer programs and data.

[0281] Those skilled in the art will also understand that the various illustrative logical blocks and steps listed in the embodiments of this application can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented through hardware or software depends on the specific application and the overall system design requirements. Those skilled in the art can implement the functionality using various methods for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of this application.

[0282] This application also provides a readable storage medium having instructions stored thereon that, when executed by a computer, implement the functions of any of the above method embodiments.

[0283] This application also provides a computer program product that, when executed by a computer, implements the functions of any of the above method embodiments.

[0284] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented, in whole or in part, as a computer program product. A computer program product includes one or more computer programs. When a computer program is loaded and executed on a computer, it generates, in whole or in part, the processes or functions according to the embodiments of this application. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, a computer program can be transferred from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0285] Those skilled in the art will understand that the various numerical designations such as "first," "second," etc., involved in this application are merely for the convenience of description and are not intended to limit the scope of the embodiments of this application, nor do they indicate the order of sequence.

[0286] At least one in this application can also be described as one or more, and multiple can be two, three, four or more, and this application does not impose any limitation. In the embodiments of this application, for a technical feature, the technical features in that technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", and there is no order or size among the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0287] As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, device, and / or apparatus (e.g., disk, optical disk, memory, programmable logic device (PLD)) used to provide machine instructions and / or data to a programmable processor, including machine-readable media that receive machine instructions as machine-readable signals. The term "machine-readable signal" refers to any signal used to provide machine instructions and / or data to a programmable processor.

[0288] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as a data server), or computing systems that include middleware components (e.g., an application server), or computing systems that include frontend components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with embodiments of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., a communication network). Examples of communication networks include local area networks (LANs), wide area networks (WANs), and the Internet.

[0289] Computer systems can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. Client-server relationships are created by computer programs running on the respective computers and having a client-server relationship with each other.

[0290] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0291] Furthermore, it should be understood that the various embodiments of this application can be implemented individually or in combination with other embodiments, where the scheme allows.

[0292] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0293] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0294] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A communication control method, characterized in that, The method is performed by a network device, and the method includes: A first synchronization broadcast block (SSB) is sent to the user equipment (UE) using a first resource block (RB) that matches the system bandwidth and / or channel bandwidth. The first SSB includes at least a physical broadcast channel (PBCH). The number of the first RBs is less than the number of the second RBs, and the second RBs are time-frequency resources for transmitting the second SSB; The method further includes: Rate matching is performed based on the second RB to determine the length of the encoded bits that match the second RB; Modulation is performed on the coded bits that match the second RB. Based on the second RB, the modulated symbol data is resource-mapped to determine the transmission location of the symbol data that matches the second RB. The step of sending the first SSB to the UE with a first RB that matches the system bandwidth and / or channel bandwidth includes: From the transmission locations of symbols that match the second RB, select the transmission locations of symbols with the first number of RBs at the center frequency of the SSB to send the first SSB to the UE.

2. The method according to claim 1, characterized in that, The method further includes: The first RB is determined, wherein the number of the first RB is equal to or less than the number of RBs corresponding to the maximum time-frequency resource supported by the system bandwidth and / or channel bandwidth.

3. The method according to claim 1 or 2, characterized in that, The method further includes: Determine the first subcarrier index of the first RB where the first SSB is located, wherein the first subcarrier index is an offset relative to subcarrier 0 within the first RB.

4. The method according to claim 1 or 2, characterized in that, The step of sending the first SSB to the UE with a first RB that matches the system bandwidth and / or channel bandwidth includes: Retain the symbol data carried by each subcarrier on the first RB at the center frequency of the SSB, and set the symbol data exceeding the number carried by each subcarrier on the first RB to 0; Based on the first subcarrier index of the first RB at the center frequency point of the SSB and its corresponding symbol data, orthogonal frequency division multiplexing (OFDM) modulation is performed to transmit the first SSB to the UE.

5. The method according to claim 1 or 2, characterized in that, The step of sending the first SSB to the UE with a first RB that matches the system bandwidth and / or channel bandwidth includes: Determine the second subcarrier index of the second RB at the center frequency point of the SSB; Replace the second subcarrier index with the first subcarrier index; OFDM modulation is performed according to the first subcarrier index of the first RB at the center frequency of the SSB and its corresponding symbol data, so as to transmit the first SSB to the UE.

6. The method according to claim 1 or 2, characterized in that, After determining the transmission location of the symbol data matching the second RB by performing resource mapping on the modulated symbol data according to the second RB, the method further includes: The symbol data that matches the second RB is remapped onto the first RB.

7. The method according to claim 6, characterized in that, The step of remapping symbol data that matches the second RB onto the first RB includes: For at least two different PBCH transmissions, different PBCH resource remapping patterns are used to remap symbolic data that matches the second RB to the first RB.

8. The method according to claim 7, characterized in that, The method further includes: Configure the UE with pattern-related information of the different PBCH resource remapping patterns used in the at least two different PBCH transmissions.

9. The method according to claim 6, characterized in that, The step of sending the first SSB to the UE with a first RB that matches the system bandwidth and / or channel bandwidth includes: Retain the symbol data carried by each subcarrier on the first RB after remapping at the center frequency of the SSB, and set the symbol data carried by each subcarrier on the first RB after remapping to 0; Based on the first subcarrier index of the first RB at the center frequency point of the SSB and its corresponding symbol data, orthogonal frequency division multiplexing (OFDM) modulation is performed to transmit the first SSB to the UE.

10. The method according to claim 6, characterized in that, The step of sending the first SSB to the UE with a first RB that matches the system bandwidth and / or channel bandwidth includes: Determine the second subcarrier index of the second RB at the center frequency point of the SSB; Replace the second subcarrier index with the first subcarrier index; OFDM modulation is performed according to the first subcarrier index of the first RB at the center frequency of the SSB and its corresponding remapped symbol data to transmit the first SSB to the UE.

11. The method according to claim 7, characterized in that, The at least two distinct PBCH transmissions include: PBCH transmission corresponding to any two or more SSB indices within the SSB set during the same SSB period; or, PBCH transmissions corresponding to the same SSB index at least two different SSB cycles.

12. A communication control method, characterized in that, The method is executed by a user equipment (UE), and the method includes: The receiving network device sends a first synchronization broadcast block (SSB) corresponding to a first RB that matches the system bandwidth and / or channel bandwidth. The first SSB includes at least a physical broadcast channel (PBCH). Wherein, the number of the first RBs is less than the number of the second RBs, and the second RBs are time-frequency resources for transmitting the second SSB; The method further includes: De-resolve resource mapping and de-rate matching based on the second RB.

13. The method according to claim 12, characterized in that, The number of the first RB is equal to or less than the number of RBs corresponding to the maximum time-frequency resource supported by the system bandwidth and / or channel bandwidth.

14. The method according to claim 12 or 13, characterized in that, The method further includes: OFDM demodulation is performed on the PBCH; The RE index reordering method of the first SSB is determined according to the agreement. Based on the RE index position and RE index reordering method of the second SSB, the transmission position of the symbol data that matches the second RB where the OFDM demodulation symbol is located is determined.

15. The method according to claim 12 or 13, characterized in that, The method further includes: For at least two different PBCH transmissions, perform separate decoding or combined decoding.

16. The method according to claim 15, characterized in that, For at least two distinct PBCH transmissions, the merge decoding process includes: For at least two different PBCH transmissions that use different PBCH resource remapping patterns, in the initial access state, they are merged and decoded in a preset pattern order and / or cyclic order of the starting positions of the encoded bits.

17. The method according to claim 15, characterized in that, For at least two distinct PBCH transmissions, the merge decoding process includes: For at least two different PBCH transmissions that use different PBCH resource remapping patterns, in the non-initial access state, the merging and decoding are performed according to the pattern-related information agreed upon by the protocol or configured by the network device and / or the cyclic order of the starting positions of the encoded bits agreed upon by the protocol or configured by the network device.

18. The method according to claim 17, characterized in that, The method further includes: Receive pattern-related information and / or coded bit start position cycle order of different PBCH resource remapping patterns used in at least two different PBCH transmissions sent by the network device.

19. The method according to claim 16, characterized in that, The method further includes: Based on the pattern information and downlink timing, determine the PBCH resource remapping pattern used for each PBCH transmission.

20. The method according to claim 16, characterized in that, The method further includes: The starting position of the encoded bits is determined based on the cyclic order of the starting position of the encoded bits and the downlink timing.

21. The method according to claim 16, characterized in that, The at least two distinct PBCH transmissions include: PBCH transmission corresponding to any two or more SSB indices within the SSB set during the same SSB period; or, PBCH transmissions corresponding to the same SSB index at least two different SSB cycles.

22. The method according to claim 12 or 13, characterized in that, Before performing de-resource mapping and de-rate matching based on the second RB, the method further includes: De-resource remapping is performed on the symbolic data on the first RB.

23. A communication control device, characterized in that, The device is configured in a network equipment, and the device includes a transceiver module and a determination module. The transceiver module is used for: A first synchronization broadcast block (SSB) is sent to the user equipment (UE) using a first resource block (RB) that matches the system bandwidth and / or channel bandwidth. The first SSB includes at least a physical broadcast channel (PBCH). The number of the first RBs is less than the number of the second RBs, and the second RBs are time-frequency resources for transmitting the second SSB; The determining module is used to: perform rate matching based on the second RB to determine the length of the coded bits that match the second RB; Modulation is performed on the coded bits that match the second RB. Based on the second RB, the modulated symbol data is resource-mapped to determine the transmission location of the symbol data that matches the second RB. The transceiver module is also used for: From the transmission locations of symbols that match the second RB, select the transmission locations of symbols with the first number of RBs at the center frequency of the SSB to send the first SSB to the UE.

24. A communication control device, characterized in that, The device is configured in a user equipment (UE), and the device includes a transceiver module and a determination module. The transceiver module is used for: The receiving network device sends a first synchronization broadcast block (SSB) corresponding to a first RB that matches the system bandwidth and / or channel bandwidth. The first SSB includes at least a physical broadcast channel (PBCH). Wherein, the number of the first RBs is less than the number of the second RBs, and the second RBs are time-frequency resources for transmitting the second SSB; The determining module is used to: perform de-resource mapping and de-rate matching based on the second RB.

25. A communication device, wherein, include: transceiver; Memory; The processor is connected to the transceiver and the memory respectively, and is configured to control the wireless signal transmission and reception of the transceiver by executing computer-executable instructions on the memory, and is capable of implementing the method of any one of claims 1-22.

26. A computer storage medium, wherein, The computer storage medium stores computer-executable instructions; when executed by a processor, the computer-executable instructions can implement the method of any one of claims 1-22.

27. A communication system, characterized in that, include: Network equipment and user equipment (UE), among which, The network device is used to perform the method as described in any one of claims 1 to 11; The UE is used to perform the method as described in any one of claims 12 to 22.

Images