Indication method and device of scs of initial downlink bwp

Abstract

The embodiment of the application discloses a method and device for indicating the SCS of an initial downlink BWP, which can solve the problem that a terminal cannot determine the SCS of the initial downlink BWP, and affect the communication efficiency. The method can include: the terminal determines the SCS of the initial downlink BWP according to at least one of the following: the frequency position of the SSB; the synchronization raster number of the SSB; the first frequency band where the operating carrier of the SSB is located; the SCS of the SSB; and the target signaling indication.

Description

Technical Field

[0001] This application belongs to the field of communication technology, and specifically relates to a method and device for indicating the subcarrier spacing (SCS) of the initial downlink bandwidth part (BWP). Background Technology

[0002] SCS (Signal Count) is typically several times 15kHz (Hz omitted hereafter), for example, SCS of 60K or 120K. Different service types, frequency bands, and mobile speeds have different SCS requirements. In B52.6GHz (above 52.6GHz) systems, the initial downlink BWP may introduce a large SCS, such as SCS = 480K or 960K, which will further increase the number of SCS. According to the SCS indication methods in related technologies, the terminal may not be able to determine these multiple SCS, thus affecting communication efficiency. Summary of the Invention

[0003] This application provides a method and apparatus for indicating the SCS of the initial downlink BWP, which can solve the problem that the terminal cannot determine the SCS of the initial downlink BWP, thus affecting communication efficiency.

[0004] In a first aspect, a method for indicating the SCS of an initial downlink BWP is provided, the method comprising: a terminal determining the SCS of the initial downlink BWP based on at least one of the following: the frequency position of the SSB; the synchronization grid number of the SSB; the first frequency band of the operating carrier of the SSB; the SCS of the SSB; and a target signaling indication.

[0005] Secondly, a method for indicating the SCS of an initial downlink BWP is provided, the method comprising: network-side equipment and a terminal transmitting channels or signals on the initial downlink BWP; wherein the terminal is configured to determine the SCS of the initial downlink BWP based on at least one of the following: the frequency position of the SSB; the synchronization grid number of the SSB; the first frequency band of the operating carrier of the SSB; the SCS of the SSB; and the target signaling indication.

[0006] Thirdly, an indication device for the SCS of an initial downlink BWP is provided, comprising: a determination module for determining the SCS of the initial downlink BWP based on at least one of the following: the frequency position of the SSB; the synchronization grid number of the SSB; the first frequency band in which the operating carrier of the SSB is located; the SCS of the SSB; and the target signaling indication.

[0007] Fourthly, an indication device for the SCS of an initial downlink BWP is provided, comprising: a transmission module for transmitting channels or signals with a terminal on the initial downlink BWP; wherein the terminal is configured to determine the SCS of the initial downlink BWP based on at least one of the following: the frequency position of the SSB; the synchronization grid number of the SSB; the first frequency band of the operating carrier of the SSB; the SCS of the SSB; and the target signaling indication.

[0008] Fifthly, a terminal is provided, the terminal including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, the program or instructions implementing the method as described in the first aspect when executed by the processor.

[0009] In a sixth aspect, a network-side device is provided, the network-side device including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the method as described in the second aspect.

[0010] In a seventh aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the method as described in the first aspect, or implement the method as described in the second aspect.

[0011] Eighthly, a computer program product is provided, the computer program product including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein when the program or instructions are executed by the processor, they implement the method as described in the first aspect, or implement the method as described in the second aspect.

[0012] In a ninth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run programs or instructions to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0013] In the embodiments of this application, the terminal can determine the SCS of the initial downlink BWP based on at least one of the following: the frequency location of the SSB; the synchronization grid number of the SSB; the first frequency band of the operating carrier of the SSB; the SCS of the SSB; and the target signaling indication. The embodiments of this application solve the problem that the terminal cannot determine the SCS of the initial downlink BWP, which affects communication efficiency, and facilitates improved communication efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a wireless communication system according to an embodiment of this application;

[0015] Figure 2This is a schematic flowchart of the SCS indication method for the initial downlink BWP according to an embodiment of this application;

[0016] Figure 3 This is a schematic flowchart of the SCS indication method for the initial downlink BWP according to an embodiment of this application;

[0017] Figure 4 This is a schematic diagram of the structure of the SCS indicator device for the initial downlink BWP according to an embodiment of this application;

[0018] Figure 5 This is a schematic diagram of the structure of the SCS indicator device for the initial downlink BWP according to an embodiment of this application;

[0019] Figure 6 This is a schematic diagram of the structure of a communication device according to an embodiment of this application;

[0020] Figure 7 This is a schematic diagram of the terminal structure according to an embodiment of this application;

[0021] Figure 8 This is a schematic diagram of the structure of a network-side device according to an embodiment of this application. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0023] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0024] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used in the systems and radio technologies mentioned above, as well as in other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and NR terminology is used in most of the following description. These technologies can also be applied to applications beyond NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0025] Figure 1This diagram illustrates a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as a terminal device or user equipment (UE). The terminal 11 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), wearable device, vehicle-mounted device (VUE), pedestrian terminal (PUE), etc. Wearable devices include wristbands, headphones, glasses, etc. It should be noted that this application does not limit the specific type of terminal 11. Network-side device 12 can be a base station or a core network. The base station can be referred to as a node B, evolved node B, access point, base transceiver station (BTS), radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), B node, evolved B node (eNB), next-generation node B (gNB), home B node, home evolved B node, WLAN access point, WiFi node, transmitting and receiving point (TRP), or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that in this application embodiment, only the base station in the NR system is used as an example, but the specific type of base station is not limited.

[0026] The following, in conjunction with the accompanying drawings, provides a detailed description of the method and apparatus for indicating the subcarrier spacing (SCS) of the initial downlink bandwidth part (BWP) provided in this application, through specific embodiments and application scenarios.

[0027] like Figure 2 As shown, this application embodiment provides an SCS indication method 200 for an initial downlink BWP. This method can be executed by a terminal; in other words, it can be executed by software or hardware installed on the terminal. The method includes the following steps.

[0028] S202: The terminal determines the SCS of the initial downlink BWP based on at least one of the following: the frequency position of the Synchronization Signal and PBCH Block (SSB); the synchronization grid number of the SSB; the first frequency band of the operating carrier of the SSB; the SCS of the SSB; and the target signaling indication.

[0029] In this embodiment, for example, there is a correlation between the frequency location of the SSB and the SCS of the initial downlink BWP. For instance, if the frequency location of the SSB is frequency 1, the SCS of the initial downlink BWP is 240kHz (Hz omitted hereafter); if the frequency location of the SSB is frequency 2, the SCS of the initial downlink BWP is 480kHz; and so on. Thus, after determining the frequency location of the SSB, the terminal can obtain the SCS of the initial downlink BWP based on the above correlation.

[0030] Similarly, in this embodiment, there can be a correlation between the synchronization grid number of the SSB and the SCS of the initial downlink BWP. After determining the synchronization grid number of the SSB, the terminal can obtain the SCS of the initial downlink BWP based on the above correlation. Alternatively, in this embodiment, there can be a correlation between the first frequency band where the operating carrier of the SSB is located and the SCS of the initial downlink BWP. After determining the first frequency band where the operating carrier of the SSB is located, the terminal can obtain the SCS of the initial downlink BWP based on the above correlation.

[0031] Optionally, the first frequency band mentioned above includes one of the following: 1) a specific frequency range, such as FR3 or FR2x, wherein the frequency of FR3 is higher than 52.6 GHz; 2) a specific frequency band within a specific frequency range, such as a specific frequency band in FR2, FR2x or FR3.

[0032] In another example of this embodiment, there is a correlation between the SCS of the SSB and the SCS of the initial downlink BWP. After determining the SCS of the SSB, the terminal can obtain the SCS of the initial downlink BWP based on the aforementioned correlation. Specifically, for example, if the SCS of the SSB and the SCS of the initial downlink BWP are equal, the terminal directly uses the SCS of the SSB as the SCS of the initial downlink BWP. Another example is if the SCS of the SSB and the SCS of the initial downlink BWP are multiples of each other; the terminal derives the SCS of the initial downlink BWP based on this multiple relationship after obtaining the SCS of the SSB.

[0033] For example, prior to S202, the terminal may receive target signaling from the network-side equipment. This target signaling is used to indicate the SCS of the initial downlink BWP. This target signaling may be system signaling or Radio Resource Control (RRC) signaling.

[0034] In the examples above, the terminal determines the SCS of the initial downlink BWP based on one of the five pieces of information mentioned in S202. In reality, the terminal can also determine the SCS of the initial downlink BWP based on at least two of the five pieces of information. For example, the terminal determines the SCS of the initial downlink BWP based on the SCS of the SSB and the target signaling indication. Specifically, if the SSB's SCS is 120K, the SSB's SCS is used as the SCS of the initial downlink BWP, meaning the initial downlink BWP's SCS is also 120K; if the SSB's SCS is 480K or 960K, the initial downlink BWP's SCS is determined based on the target signaling indication.

[0035] Optionally, after S202, the following steps may also be included: the terminal transmits a channel or signal on the initial downlink BWP according to the SCS of the initial downlink BWP. This channel or signal may be related to the initial access procedure, and may include, for example, a random access preamble, a Physical Downlink Control Channel (PDCCH), a Physical Downlink Shared Channel (PDSCH), etc.

[0036] The method for indicating the SCS of the initial downlink BWP provided in this application embodiment allows the terminal to determine the SCS of the initial downlink BWP based on at least one of the following: the frequency location of the SSB; the synchronization grid number of the SSB; the first frequency band where the operating carrier of the SSB is located; the SCS of the SSB; and the target signaling indication. This application embodiment solves the problem that the terminal cannot determine the SCS of the initial downlink BWP, which affects communication efficiency, and facilitates improved communication efficiency.

[0037] Optionally, the SCS for determining the initial downlink BWP based on at least one of the following can be included in Example 200:

[0038] 1) The SCS of the SSB is used as the SCS of the initial downlink BWP. In this example, the SCS of the SSB is equal to the SCS of the initial downlink BWP.

[0039] 2) Determine the SCS of the initial downlink BWP based on the SSB's SCS and the target signaling indication. Specifically, this example could be determining the SCS of the initial downlink BWP based on the SSB's SCS and an indication field in the target signaling, where the indication field indicates the SCS of the initial downlink BWP.

[0040] 3) Determine the SCS of the initial downlink BWP based on the target signaling indication, which may be system signaling or RRC signaling. Specifically, this example may involve determining the SCS of the initial downlink BWP based on an indication field in the target signaling, where the indication field indicates the SCS of the initial downlink BWP.

[0041] The determination of the SCS of the initial downlink BWP based on the SSB's SCS and the target signaling indication mentioned in 2) above includes at least one of the following two.

[0042] a) If the SSB's SCS is the first target SCS, the SSB's SCS is used as the SCS of the initial downlink BWP.

[0043] b) If the SCS of the SSB is the second target SCS, determine the SCS of the initial downlink BWP according to the target signaling indication.

[0044] In this embodiment, the first target SCS and the second target SCS are not equal. For example, the first target SCS can be 120K, and the second target SCS can be 480K or 960K. Alternatively, the first target SCS can be 480K or 960K, and the second target SCS can be 120K.

[0045] In one example, the SSB has multiple SCS options, such as 120K, 480K, and 960K; the initial downlink BWP also has multiple SCS possibilities, such as 120K, 480K, and 960K. When the SSB's SCS is 120K, the initial downlink BWP's SCS is automatically assumed to be 120K, meaning the initial downlink BWP's SCS is bound to the SSB's SCS. If the SSB's SCS is 480K and / or 960K, the initial downlink BWP's SCS has no relation to the SSB's SCS. In this case, target signaling is used to indicate whether the initial downlink BWP's SCS is 480K or 960K. This target signaling can specifically be the subcarrier spacing (subCarrierSpacingCommon) indication field in the system signaling.

[0046] The use of the SSB's SCS as the initial downlink BWP mentioned in 1) above includes: when the SSB's SCS is the third target SCS, the SSB's SCS is used as the initial downlink BWP's SCS.

[0047] The determination of the SCS of the initial downlink BWP based on the target signaling indication mentioned in 3) above includes: when the SCS of the SSB is the fourth target SCS, determining the SCS of the initial downlink BWP based on the target signaling indication.

[0048] The two embodiments described above can be implemented independently, in which case the third target SCS and the fourth target SCS can be equal or unequal. The two embodiments can also be implemented simultaneously, in which case the third target SCS and the fourth target SCS can be unequal; for example, the third target SCS can be 120K, and the fourth target SCS can be 480K or 960K. Another example: the third target SCS can be 480K or 960K, and the fourth target SCS can be 120K.

[0049] Optionally, the target signaling mentioned in 2) or 3) above includes an indication field; when the SCS of the SSB is the fifth target SCS, the indication field is used to indicate target information; and / or when the SCS of the SSB is the sixth target SCS, the indication field is used to indicate the SCS of the initial downlink BWP.

[0050] In this embodiment, the target information may differ from the SCS of the initial downlink BWP. In other words, if the SCS of the SSB is the fifth target SCS, the indication field is not used to indicate the SCS of the initial downlink BWP. The fifth target SCS and the sixth target SCS are not equal; for example, the fifth target SCS may be 120K, and the sixth target SCS may be 480K or 960K. Alternatively, the fifth target SCS may be 480K or 960K, and the sixth target SCS may be 120K.

[0051] In one example, when the SSB's SCS is the fifth target SCS, the subCarrierSpacingCommon indicator field in the system information does not indicate the initial downlink BWP's SCS. In this case, the initial downlink BWP's SCS can be equal to the SSB's SCS, and the subCarrierSpacingCommon indicator field is not used to indicate the initial downlink BWP's SCS. However, when the SSB's SCS is the sixth target SCS, the subCarrierSpacingCommon indicator field in the system information is used to indicate the initial downlink BWP's SCS. In this case, the initial downlink BWP's SCS may be unrelated to the SSB's SCS. Therefore, the subCarrierSpacingCommon indicator field has different functions in these two cases.

[0052] Optionally, the target signaling mentioned in 2) or 3) above includes a target indication field, which is used to indicate the SCS of the initial downlink BWP; wherein the target indication field is a subCarrierSpacingCommon indication field; or the target indication field includes a first indication field and a second indication field, wherein the first indication field is a subCarrierSpacingCommon indication field.

[0053] This embodiment takes into account that the subCarrierSpacingCommon indicator field in related technologies is 1 bit, which cannot directly indicate the SCS of multiple (i.e., more than two) initial downlink BWPs. Therefore, the subCarrierSpacingCommon indicator field can be extended, for example, to 2 bits, or an additional second indicator field can be used to indicate it. The second indicator field can be used to independently indicate the SCS of the initial downlink BWP, or the second indicator field can be used in conjunction with the subCarrierSpacingCommon indicator field to indicate the SCS of the initial downlink BWP.

[0054] Optionally, the second indication field mentioned in the above embodiments may include at least one of the following.

[0055] 1) Physical Downlink Shared Channel Demodulation Reference Signal (PDSCH-DMRS) Location Indication Field in SSB.

[0056] 2) The physical downlink control channel configuration system information block (such as pdcch-ConfigSIB1) indication field in the SSB.

[0057] 3) SSB Subcarrier Offset Indicator Field in SSB.

[0058] 4) Reserved fields in SSB.

[0059] It is understood that when the second indication field is one of 1) to 4) above, the second indication field can be used to independently indicate the SCS of the initial downlink BWP, or the second indication field can be used in conjunction with the subCarrierSpacingCommon field to indicate the SCS of the initial downlink BWP.

[0060] When the second indication field is at least two of the above 1) to 4), these at least two can indicate the SCS of the initial downlink BWP by means of joint encoding.

[0061] In one example, the second indication field includes the PDSCH-DMRS location indication field; wherein the PDSCH-DMRS location indication field is associated with the SSB's SCS; or the PDSCH-DMRS location indication field is used to indicate a fixed PDSCH-DMRS location and is not associated with the SSB's SCS.

[0062] For example, the PDSCH-DMRS position indication field is associated with the SSB's SCS. Specifically, when the SSB's SCS is the first value, the PDSCH-DMRS position is the third symbol in the time slot; when the SSB's SCS is the second value, the PDSCH-DMRS position is the fourth symbol in the time slot. Therefore, the PDSCH-DMRS position indication field does not need to indicate the PDSCH-DMRS position, and can be used to indicate the SCS of the initial downlink BWP.

[0063] For example, the PDSCH-DMRS position indication field is used to indicate the fixed PDSCH-DMRS position. Therefore, the PDSCH-DMRS position indication field does not need to further indicate the position of the PDSCH-DMRS, and can be used to indicate the SCS of the initial downlink BWP.

[0064] In one example, the second indication field includes the physical downlink control channel configuration system information block indication field, wherein the number of valid licenses in the configuration table corresponding to the control resource set (CORESET) indicated by the physical downlink control channel configuration system information block indication field is less than a first threshold; and / or; the number of valid licenses in the configuration table corresponding to the search space indicated by the physical downlink control channel configuration system information block indication field is less than a second threshold.

[0065] In this example, since a portion of the indicator bits in the Physical Downlink Control Channel Configuration System Information Block Indicator Field are used to indicate the SCS of the initial downlink BWP, the terminal assumes that the number of valid licenses in the configuration table corresponding to CORESET#0 has decreased, i.e., is less than the first threshold; and / or; the terminal assumes that the number of valid licenses in the configuration table corresponding to Search space#0 has decreased, i.e., is less than the second threshold.

[0066] In one example, the second indication field includes the ssb-SubcarrierOffset indication field, wherein the ssb-SubcarrierOffset indication field includes an indication bit for indicating the SCS of the initial downlink BWP.

[0067] This example takes into account that for certain SSBs, there might be cases where only a portion of the bits in the ssb-subcarrierOffset indicator field are used. In such cases, the extra bits can be used to indicate the SCS of the initial downlink BWP. For example, the ssb-subcarrierOffset indicator field has 4 bits. In some cases, such as some fixed SSB subcarrier offsets, 3 bits are sufficient to indicate the SSB subcarrier spacing offset. Therefore, the extra bit can be used to indicate the SCS of the initial downlink BWP.

[0068] To illustrate in detail the SCS indication method for the initial downlink BWP provided in the embodiments of this application, the following will be described in conjunction with two specific embodiments.

[0069] Example 1:

[0070] This embodiment can be applied to a B52.6GHz system. This embodiment assumes that the B52.6GHz band is allocated to a new band, such as the FR2x band or FR3. In this case, there is 1 bit in the subCarrierSpacingCommon indicator field that can be used to indicate the SCS of the initial downlink BWP.

[0071] This embodiment can determine the SCS of the initial downlink BWP in the following three ways.

[0072] Method 1: The initial downlink BWP's SCS is consistent with the SSB's SCS.

[0073] Method 2: The SCS of some initial downlink BWPs is consistent with the SCS of SSBs.

[0074] Method 3: The SCS of the initial downlink BWP is unrelated to the SCS of the SSB. The SCS of the initial downlink BWP can be indicated by the target signaling.

[0075] For method 1, optionally, the terminal can default that the SCS of the initial downlink BWP is consistent with the SCS of the SSB received by the terminal. Therefore, this method does not require the use of the subCarrierSpacingCommon indication field.

[0076] For method 2, if the SSB has multiple possible SCS, such as 120K, 480K and / or 960K; the initial downlink BWP also has multiple possible SCS, such as 120K, 480K and / or 960K.

[0077] When the SSB's SCS is 120K, the terminal directly defaults to the initial downlink BWP's SCS also being 120K. If the SSB's SCS is 480K and / or 960K, the subCarrierSpacingCommon indicator field is used to indicate whether the initial downlink BWP's SCS is 480K or 960K.

[0078] If the SSB has multiple possible SCS values, such as 120K, 240K, 480K, and 960K; and the initial downlink BWP also has multiple possible SCS values, such as 120K, 240K, 480K, and 960K, then the following two possibilities exist.

[0079] Possibility 1: When the SSB's SCS is 120K, the terminal directly defaults to the initial downlink BWP's SCS being 120K. When the SSB's SCS is 240K, the terminal directly defaults to the initial downlink BWP's SCS being 240K. If the SSB's SCS is 480K or 960K, then the subCarrierSpacingCommon indicator field is used to indicate whether the initial downlink BWP's SCS is 480K or 960K.

[0080] Possibility 2: When the SSB's SCS is 120K, the terminal directly defaults to the initial downlink BWP's SCS also being 120K. If the SSB's SCS is 240K, 480K, or 960K, then the indication field in the target signaling indicates whether the initial downlink BWP's SCS is 240K, 480K, or 960K. In this case, since subCarrierSpacingCommon only has 1 bit, it is insufficient to indicate the three SCSs, so more bits are needed. This embodiment can extend the subCarrierSpacingCommon indication field, for example, by extending it to 2 bits, or by using an additional second indication field, as described in the previous embodiment.

[0081] For method 3, the SCS of the initial downlink BWP is unrelated to the SCS of the SSB, so the SCS of the initial downlink BWP can be indicated by the subCarrierSpacingCommon indicator field. If there are more than two candidate combinations of the SCS of the initial downlink BWP, since the subCarrierSpacingCommon indicator field only has 1 bit, it is insufficient to indicate 3 SCSs, so more bits are needed. This embodiment can extend the subCarrierSpacingCommon indicator field, for example, by extending it to 2 bits, or by using an additional second indicator field, as described in the previous embodiment.

[0082] Example 2:

[0083] This embodiment can be applied to the B52.6GHz system. This embodiment assumes that the B52.6GHz band is directly allocated to the FR2 band. At this time, 1 bit in the subCarrierSpacingCommon indication field has been used for the indication of (60K, 120K). Therefore, it is necessary to indicate the SCS outside of 60K and 120K in the following way.

[0084] Method 1: The initial downlink BWP's SCS is consistent with the SSB's SCS.

[0085] Method 2: The SCS of some initial downlink BWPs is consistent with the SCS of SSBs.

[0086] Method 3: The SCS of the initial downlink BWP is unrelated to the SCS of the SSB. The SCS of the initial downlink BWP can be indicated by the target signaling.

[0087] For mode 1, optionally, the terminal can default that the SCS of the initial downlink BWP is completely consistent with the SC of the SSB received by the terminal, in which case no additional bits are needed to indicate it.

[0088] For method 2, if the SSB's SCS has multiple possibilities (120K, 480K, and / or 960K), and the initial downlink BWP's SCS also has multiple possibilities (120K, 480K, and / or 960K), then when the SSB's SCS is 120K, the initial downlink BWP's SCS is automatically assumed to be 120K. If the SSB's SCS is 480K and / or 960K, then additional bits are used to indicate whether the initial downlink BWP's SCS is 480K or 960K. This embodiment can extend the subCarrierSpacingCommon indicator field, for example, by extending it to 2 bits, or by using an additional second indicator field, as described in the previous embodiment.

[0089] For method 3, the SCS of the initial downlink BWP is unrelated to the SCS of the SSB, so additional bits are needed to indicate the SCS of the initial downlink BWP. This embodiment can extend the subCarrierSpacingCommon indicator field, for example, by extending it to 2 bits, or by using an additional second indicator field, as described in the previous embodiment.

[0090] The above combination Figure 2 The method for indicating the SCS of the initial downlink BWP according to embodiments of this application is described in detail below. Figure 3 This application describes in detail a method for instructing the SCS of an initial downlink BWP according to another embodiment of the present application. It is understood that the interaction between the network-side device and the terminal, as described from the perspective of the network-side device, is... Figure 2The terminal-side descriptions in the methods shown are the same; to avoid repetition, relevant descriptions have been omitted as appropriate.

[0091] Figure 3 This is a schematic diagram illustrating the implementation flow of the SCS indication method for the initial downlink BWP in this application embodiment, which can be applied to network-side devices. For example... Figure 3 As shown, the method 300 includes the following steps.

[0092] S302: The network-side equipment and the terminal transmit channels or signals on the initial downlink BWP; wherein the terminal is used to determine the SCS of the initial downlink BWP based on at least one of the following: the frequency position of the SSB; the synchronization grid number of the SSB; the first frequency band of the operating carrier of the SSB; the SCS of the SSB; and the target signaling indication.

[0093] In this embodiment, the terminal can determine the SCS of the initial downlink BWP based on at least one of the following: the frequency location of the SSB; the synchronization grid number of the SSB; the first frequency band of the SSB's operating carrier; the SCS of the SSB; and the target signaling indication. In this embodiment, the network-side equipment and the terminal can transmit channels or signals on the initial downlink BWP, improving communication efficiency.

[0094] It should be noted that the execution entity of the initial downlink BWP SCS indication method provided in this application embodiment can be an initial downlink BWP SCS indication device, or a control module in the initial downlink BWP SCS indication device for executing the initial downlink BWP SCS indication method. This application embodiment uses the execution of the initial downlink BWP SCS indication method by an initial downlink BWP SCS indication device as an example to illustrate the initial downlink BWP SCS indication device provided in this application embodiment.

[0095] Figure 4 This is a schematic diagram of the structure of the SCS indication device for the initial downlink BWP according to an embodiment of this application. This device 400 may correspond to the terminal in other embodiments.

[0096] like Figure 4 As shown, the device 400 includes: a determination module 402, which can be used to determine the SCS of the initial downlink BWP based on at least one of the following: the frequency position of the SSB; the synchronization grid number of the SSB; the first frequency band of the operating carrier of the SSB; the SCS of the SSB; and the target signaling indication.

[0097] In the embodiments of this application, the SCS of the initial downlink BWP can be determined based on at least one of the following: the frequency location of the SSB; the synchronization grid number of the SSB; the first frequency band of the SSB's operating carrier; the SCS of the SSB; and the target signaling indication. The embodiments of this application solve the problem of the inability to determine the SCS of the initial downlink BWP, which affects communication efficiency, and facilitates improved communication efficiency.

[0098] Optionally, as an embodiment, the determining module 402 is used to: use the SCS of the SSB as the SCS of the initial downlink BWP; determine the SCS of the initial downlink BWP based on the SCS of the SSB and the target signaling indication; and determine the SCS of the initial downlink BWP based on the target signaling indication.

[0099] Optionally, as an embodiment, the determining module 402 is used for at least one of the following: if the SCS of the SSB is a first target SCS, using the SCS of the SSB as the SCS of the initial downlink BWP; if the SCS of the SSB is a second target SCS, determining the SCS of the initial downlink BWP according to the target signaling indication.

[0100] Optionally, as an embodiment, using the SCS of the SSB as the SCS of the initial downlink BWP includes: using the SCS of the SSB as the SCS of the initial downlink BWP when the SCS of the SSB is a third target SCS; and / or; determining the SCS of the initial downlink BWP according to the target signaling indication includes: determining the SCS of the initial downlink BWP according to the target signaling indication when the SCS of the SSB is a fourth target SCS.

[0101] Optionally, as an embodiment, the target signaling includes an indication field; if the SCS of the SSB is the fifth target SCS, the indication field is used to indicate target information; and / or; if the SCS of the SSB is the sixth target SCS, the indication field is used to indicate the SCS of the initial downlink BWP.

[0102] Optionally, as an embodiment, the target signaling includes a target indication field, which is used to indicate the SCS of the initial downlink BWP; wherein, the target indication field is a subCarrierSpacingCommon indication field; or the target indication field includes a first indication field and a second indication field, wherein the first indication field is a subCarrierSpacingCommon indication field.

[0103] Optionally, as an embodiment, the second indication field includes at least one of the following: a PDSCH-DMRS location indication field in the SSB; a physical downlink control channel configuration system information block indication field in the SSB; an ssb-SubcarrierOffset indication field in the SSB; or a reserved field in the SSB.

[0104] Optionally, as an embodiment, the second indication field includes the PDSCH-DMRS position indication field, which is associated with the SCS of the SSB; or the PDSCH-DMRS position indication field is used to indicate a fixed PDSCH-DMRS position and is not associated with the SCS of the SSB.

[0105] Optionally, as an embodiment, the second indication field includes the physical downlink control channel configuration system information block indication field, wherein the number of valid licenses in the configuration table corresponding to the CORESET indicated by the physical downlink control channel configuration system information block indication field is less than a first threshold; and / or; the number of valid licenses in the configuration table corresponding to the search space indicated by the physical downlink control channel configuration system information block indication field is less than a second threshold.

[0106] Optionally, as an embodiment, the second indication field includes the ssb-SubcarrierOffset indication field, wherein the ssb-SubcarrierOffset indication field includes an indication bit for indicating the SCS of the initial downlink BWP.

[0107] Optionally, as an embodiment, the first frequency band includes one of the following: a specific frequency range; a specific frequency band within a specific frequency range.

[0108] Optionally, as an embodiment, the apparatus 400 further includes: a transmission module (not shown) for transmitting channels or signals on the initial downlink BWP according to the SCS of the initial downlink BWP.

[0109] The apparatus 400 according to the embodiments of this application can refer to the flow of the method 200 corresponding to the embodiments of this application. Furthermore, each unit / module in the apparatus 400 and the other operations and / or functions described above are respectively implemented to achieve the corresponding flow in the method 200 and can achieve the same or equivalent technical effects. For the sake of brevity, they will not be described in detail here.

[0110] The SCS indication device for the initial downlink BWP in this embodiment can be a device, or a component, integrated circuit, or chip in a terminal. This device can be a mobile terminal or a non-mobile terminal. For example, a mobile terminal can include, but is not limited to, the types of terminals 11 listed above, while a non-mobile terminal can be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This embodiment does not impose specific limitations.

[0111] The SCS indication device for the initial downlink BWP in this embodiment can be a device with an operating system. This operating system can be Android, iOS, or other possible operating systems; this embodiment does not specifically limit it.

[0112] The SCS indication device for the initial downlink BWP provided in this application embodiment can achieve Figures 2 to 3 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0113] Figure 5 This is a schematic diagram of the SCS indication device for the initial downlink BWP according to an embodiment of this application. This device may correspond to the network-side device in other embodiments.

[0114] like Figure 5 As shown, the device 500 includes: a transmission module 502, which can be used to transmit channels or signals with a terminal on an initial downlink BWP; wherein the terminal is used to determine the SCS of the initial downlink BWP according to at least one of the following: the frequency position of the SSB; the synchronization grid number of the SSB; the first frequency band of the operating carrier of the SSB; the SCS of the SSB; and the target signaling indication.

[0115] In this embodiment, the terminal can determine the SCS of the initial downlink BWP based on at least one of the following: the frequency location of the SSB; the synchronization grid number of the SSB; the first frequency band of the operating carrier of the SSB; the SCS of the SSB; and the target signaling indication. In this embodiment, the device 500 and the terminal can transmit channels or signals on the initial downlink BWP, improving communication efficiency.

[0116] The apparatus 500 according to the embodiments of this application can refer to the flow of the method 300 corresponding to the embodiments of this application. Furthermore, each unit / module in the apparatus 500 and the other operations and / or functions described above are respectively implemented to achieve the corresponding flow in the method 300 and can achieve the same or equivalent technical effects. For the sake of brevity, they will not be described in detail here.

[0117] Optional, such as Figure 6 As shown, this application embodiment also provides a communication device 600, including a processor 601, a memory 602, and a program or instructions stored in the memory 602 and executable on the processor 601. For example, when the communication device 600 is a terminal, the program or instructions executed by the processor 601 implement the various processes of the above-described embodiment of the method for indicating the SCS of the initial downlink BWP, and achieve the same technical effect. When the communication device 600 is a network-side device, the program or instructions executed by the processor 601 implement the various processes of the above-described embodiment of the method for indicating the SCS of the initial downlink BWP, and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0118] Figure 7 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0119] The terminal 700 includes, but is not limited to, components such as: radio frequency unit 701, network module 702, audio output unit 703, input unit 704, sensor 705, display unit 706, user input unit 707, interface unit 708, memory 709, and processor 710.

[0120] Those skilled in the art will understand that the terminal 700 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 710 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 7 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0121] It should be understood that, in this embodiment, the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042. The GPU 7041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 706 may include a display panel 7061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 707 includes a touch panel 7071 and other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, power buttons, etc.), a trackball, a mouse, and a joystick, which will not be described in detail here.

[0122] In this embodiment, the radio frequency unit 701 receives downlink data from the network-side device and processes it for the processor 710; additionally, it sends uplink data to the network-side device. Typically, the radio frequency unit 701 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0123] The memory 709 can be used to store software programs or instructions and various data. The memory 709 may primarily include a program or instruction storage area and a data storage area. The program or instruction storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 709 may include high-speed random access memory and non-volatile memory, wherein the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. For example, at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.

[0124] Processor 710 may include one or more processing units; optionally, processor 710 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications or instructions, and the modem processor mainly handles wireless communication, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 710.

[0125] The processor 710 is configured to determine the SCS of the initial downlink BWP based on at least one of the following: the frequency location of the SSB; the synchronization grid number of the SSB; the first frequency band of the operating carrier of the SSB; the SCS of the SSB; and the target signaling indication.

[0126] In this embodiment, terminal 700 can determine the SCS of the initial downlink BWP based on at least one of the following: the frequency location of the SSB; the synchronization grid number of the SSB; the first frequency band of the operating carrier of the SSB; the SCS of the SSB; and the target signaling indication. This embodiment solves the problem that the terminal cannot determine the SCS of the initial downlink BWP, which affects communication efficiency and facilitates the improvement of communication efficiency.

[0127] The terminal 700 provided in this application embodiment can also implement the various processes of the above-described embodiment of the method for indicating the SCS of the initial downlink BWP, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0128] Specifically, embodiments of this application also provide a network-side device. For example... Figure 8 As shown, the network-side device 800 includes: an antenna 81, a radio frequency (RF) device 82, and a baseband device 83. The antenna 81 is connected to the RF device 82. In the uplink direction, the RF device 82 receives information through the antenna 81 and transmits the received information to the baseband device 83 for processing. In the downlink direction, the baseband device 83 processes the information to be transmitted and sends it to the RF device 82. The RF device 82 processes the received information and then transmits it through the antenna 81.

[0129] The aforementioned frequency band processing device can be located in the baseband device 83. The method executed by the network-side device in the above embodiments can be implemented in the baseband device 83, which includes a processor 84 and a memory 85.

[0130] Baseband device 83 may include, for example, at least one baseband board on which multiple chips are disposed, such as... Figure 8 As shown, one of the chips, for example, is a processor 84, which is connected to a memory 85 to call the program in the memory 85 and execute the network-side device operations shown in the above method embodiments.

[0131] The baseband device 83 may also include a network interface 86 for exchanging information with the radio frequency device 82, such as a common public radio interface (CPRI).

[0132] Specifically, the network-side device in this embodiment of the invention further includes: instructions or programs stored in memory 85 and executable on processor 84, wherein processor 84 calls the instructions or programs in memory 85 to execute. Figure 5 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0133] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described embodiment of the method for indicating the SCS of the initial downlink BWP and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0134] The processor may be the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0135] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various processes of the above-described embodiment of the SCS indication method for the initial downlink BWP, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0136] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0137] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0138] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network-side device, etc.) to execute the methods described in the various embodiments of this application.

[0139] The embodiments of this application have been described above with reference to the accompanying drawings. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A method for indicating the SCS of an initial downlink BWP, characterized in that, The method includes: The terminal determines the SCS of the initial downlink bandwidth portion (BWP) based on the synchronization signal, the subcarrier spacing (SCS) of the physical broadcast block (SSB), and the target signaling indication: The target signaling includes a target indication field, which is used to indicate the SCS of the initial downlink BWP; The target indication field includes a first indication field and a second indication field. The first indication field is the subCarrierSpacingCommon indication field. The second indication field includes the Physical Downlink Control Channel Configuration System Information Block indication field in the SSB. Wherein, the number of valid licenses in the configuration table corresponding to the control resource set CORESET indicated by the physical downlink control channel configuration system information block indication field is less than a first threshold; and / or The number of valid licenses in the configuration table corresponding to the search space indicated by the physical downlink control channel configuration system information block indication field is less than the second threshold.

2. The method according to claim 1, characterized in that, The determination of the SCS of the initial downlink BWP based on the SSB's SCS and the target signaling indication includes at least one of the following: If the SSB's SCS is the first target SCS, the SSB's SCS will be used as the SCS of the initial downlink BWP. When the SSB's SCS is the second target SCS, the SCS of the initial downlink BWP is determined according to the target signaling indication.

3. The method according to claim 1, characterized in that, The second indication field also includes at least one of the following: Location indication field of Physical Downlink Shared Channel Demodulation Reference Signal (PDSCH-DMRS) in SSB; SSB Subcarrier Offset Indicator Field in SSB; Reserved fields in SSB.

4. The method according to claim 3, characterized in that, The second indication field includes the PDSCH-DMRS position indication field; Wherein, the PDSCH-DMRS location indication field is associated with the SSB's SCS; or The PDSCH-DMRS location indication field is used to indicate a fixed PDSCH-DMRS location and is not associated with the SSB's SCS.

5. The method according to claim 3, characterized in that, The second indication field includes the ssb-SubcarrierOffset indication field; The ssb-SubcarrierOffset indication field includes an indication bit for indicating the SCS of the initial downlink BWP.

6. The method according to claim 1, characterized in that, The method further includes: Based on the SCS of the initial downlink BWP, channel or signal transmission is performed on the initial downlink BWP.

7. A method for indicating the SCS of an initial downlink BWP, characterized in that, The method includes: Network-side equipment and terminals transmit channels or signals on the initial downlink BWP; wherein, the terminal is used to determine the SCS of the initial downlink BWP based on the SSB's SCS and the target signaling indication: The method further includes: the network-side device sending target signaling; The target signaling includes a target indication field, which is used to indicate the SCS of the initial downlink BWP; The target indication field includes a first indication field and a second indication field. The first indication field is the subCarrierSpacingCommon indication field. The second indication field includes the Physical Downlink Control Channel Configuration System Information Block indication field in the SSB. Wherein, the number of valid licenses in the configuration table corresponding to the control resource set CORESET indicated by the physical downlink control channel configuration system information block indication field is less than a first threshold; and / or The number of valid licenses in the configuration table corresponding to the search space indicated by the physical downlink control channel configuration system information block indication field is less than the second threshold.

8. An indicator device for the SCS of an initial downlink BWP, characterized in that, include: The determination module is used to determine the SCS of the initial downlink BWP based on the SSB's SCS and the target signaling indication: The target signaling includes a target indication field, which is used to indicate the SCS of the initial downlink BWP; The target indication field includes a first indication field and a second indication field. The first indication field is the subCarrierSpacingCommon indication field. The second indication field includes the Physical Downlink Control Channel Configuration System Information Block indication field in the SSB. Wherein, the number of valid licenses in the configuration table corresponding to the control resource set CORESET indicated by the physical downlink control channel configuration system information block indication field is less than a first threshold; and / or The number of valid licenses in the configuration table corresponding to the search space indicated by the physical downlink control channel configuration system information block indication field is less than the second threshold.

9. The apparatus according to claim 8, characterized in that, The determining module is used for at least one of the following: If the SSB's SCS is the first target SCS, the SSB's SCS will be used as the SCS of the initial downlink BWP. When the SSB's SCS is the second target SCS, the SCS of the initial downlink BWP is determined according to the target signaling indication.

10. The apparatus according to claim 8, characterized in that, The second indication field also includes at least one of the following: PDSCH-DMRS position indication field in SSB; ssb-SubcarrierOffset indication field in SSB; Reserved fields in SSB.

11. The apparatus according to claim 10, characterized in that, The second indication field includes the PDSCH-DMRS position indication field; Wherein, the PDSCH-DMRS location indication field is associated with the SSB's SCS; or The PDSCH-DMRS location indication field is used to indicate a fixed PDSCH-DMRS location and is not associated with the SSB's SCS.

12. The apparatus according to claim 10, characterized in that, The second indication field includes the ssb-SubcarrierOffset indication field; The ssb-SubcarrierOffset indication field includes an indication bit for indicating the SCS of the initial downlink BWP.

13. The apparatus according to claim 8, characterized in that, The device further includes: A transmission module is used to transmit channels or signals on the initial downlink BWP according to the SCS of the initial downlink BWP.

14. An indicator device for the SCS of an initial downlink BWP, characterized in that, include: A transmission module is used for transmitting channels or signals with a terminal on an initial downlink BWP; wherein the terminal is used to determine the SCS of the initial downlink BWP based on the SSB's SCS and the target signaling indication: The transmission module is also used to send target signaling; The target signaling includes a target indication field, which is used to indicate the SCS of the initial downlink BWP; The target indication field includes a first indication field and a second indication field. The first indication field is the subCarrierSpacingCommon indication field. The second indication field includes the Physical Downlink Control Channel Configuration System Information Block indication field in the SSB. Wherein, the number of valid licenses in the configuration table corresponding to the control resource set CORESET indicated by the physical downlink control channel configuration system information block indication field is less than a first threshold; and / or The number of valid licenses in the configuration table corresponding to the search space indicated by the physical downlink control channel configuration system information block indication field is less than the second threshold.

15. A terminal, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the method for indicating the SCS of the initial downlink BWP as described in any one of claims 1 to 6.

16. A network-side device, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the SCS indication method for the initial downlink BWP as described in claim 7.

17. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the method for indicating the SCS of the initial downlink BWP as described in any one of claims 1 to 6, or the method for indicating the SCS of the initial downlink BWP as described in claim 7.

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