Downlink reference signal transmission method and device, terminal and network side equipment

Abstract

The invention discloses a downlink reference signal transmission method and device, a terminal and network side equipment, and belongs to the technical field of wireless communication, and the downlink reference signal transmission method comprises the steps that the terminal receives a downlink reference signal sent by the network side equipment through frequency hopping transmission; the terminal processes downlink reference signals of a plurality of hops in the frequency hopping transmission to obtain a jointly processed channel state information measurement result and / or a non-jointly processed channel state information measurement result; and the terminal reports a channel state information report to the network side equipment, wherein the channel state information report comprises the channel state information measurement result of the joint processing and / or the channel state information measurement result of the non-joint processing.

Description

Technical Field

[0001] The present application belongs to the field of wireless communication technology, and specifically relates to a downlink reference signal transmission method, device, terminal and network side equipment. Background Art

[0002] In the 6th Generation Mobile Communication Technology (6G) system, a terminal, such as a User Equipment (UE), needs to perform Channel State Information (CSI) measurement over a large bandwidth.

[0003] However, considering the terminal capability and processing complexity, how the terminal processes the CSI-RS with large bandwidth is a technical problem that needs to be solved urgently. Summary of the invention

[0004] The embodiments of the present application provide a downlink reference signal transmission method, apparatus, terminal and network-side equipment, which can solve the problem of how a terminal processes a CSI-RS with a large bandwidth.

[0005] In a first aspect, a downlink reference signal transmission method is provided, which is performed by a terminal, and the method includes:

[0006] The terminal receives a downlink reference signal sent by a network side device through frequency hopping transmission;

[0007] The terminal processes downlink reference signals of multiple hops in the frequency hopping transmission to obtain a jointly processed channel state information measurement result and / or a non-jointly processed channel state information measurement result;

[0008] The terminal reports a channel state information report to the network side device, where the channel state information report includes the channel state information measurement result of the joint processing and / or the channel state information measurement result of the non-joint processing.

[0009] In a second aspect, a downlink reference signal transmission method is provided, which is performed by a network side device, and the method includes:

[0010] The network side device sends a downlink reference signal to the terminal through frequency hopping transmission;

[0011] The network side device receives a channel state information report reported by the terminal, wherein the channel state information report includes a jointly processed channel state information measurement result and / or a non-jointly processed channel state information measurement result obtained after the terminal processes the downlink reference signals of multiple hops in the frequency hopping transmission.

[0012] In a third aspect, a downlink reference signal transmission device is provided, including:

[0013] A first receiving module, configured to receive a downlink reference signal transmitted by a network-side device through frequency hopping transmission;

[0014] A processing module, configured to process downlink reference signals of multiple hops in the frequency hopping transmission to obtain a jointly processed channel state information measurement result and / or a non-jointly processed channel state information measurement result;

[0015] A reporting module, configured to report a channel state information report to the network-side device, where the channel state information report includes the jointly processed channel state information measurement result and / or the non-jointly processed channel state information measurement result.

[0016] In a fourth aspect, a downlink reference signal transmission device is provided, including:

[0017] A transmitting module, configured to transmit a downlink reference signal to a terminal through frequency hopping transmission;

[0018] A second receiving module, configured to receive a channel state information report reported by the terminal, where the channel state information report includes a jointly processed channel state information measurement result and / or a non-jointly processed channel state information measurement result obtained by the terminal after processing downlink reference signals of multiple hops in the frequency hopping transmission.

[0019] In a fifth aspect, a terminal is provided, where the terminal includes a processor and a memory, and the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0020] In a sixth aspect, a terminal is provided, including a processor and a communication interface, where:

[0021] The communication interface is configured to receive a downlink reference signal transmitted by a network-side device through frequency hopping transmission;

[0022] The processor is configured to process downlink reference signals of multiple hops in the frequency hopping transmission to obtain a jointly processed channel state information measurement result and / or a non-jointly processed channel state information measurement result;

[0023] The communication interface is configured to report a channel state information report to the network-side device, where the channel state information report includes the jointly processed channel state information measurement result and / or the non-jointly processed channel state information measurement result.

[0024] In a seventh aspect, a network-side device is provided. The network-side device includes a processor and a memory. The memory stores a program or instructions that can run on the processor. When the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0025] In an eighth aspect, a network-side device is provided, including a processor and a communication interface. Wherein, the communication interface is used for:

[0026] Sending a downlink reference signal to a terminal through frequency hopping transmission;

[0027] Receiving a channel state information report reported by the terminal. The channel state information report includes a jointly processed channel state information measurement result and / or a non-jointly processed channel state information measurement result obtained by the terminal after processing the downlink reference signals of multiple hops in the frequency hopping transmission.

[0028] In a ninth aspect, a readable storage medium is provided. A program or instructions are stored on the readable storage medium. When the program or instructions are executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0029] In a tenth aspect, a wireless communication system is provided, including: a terminal and a network-side device. The terminal can be used to execute the steps of the method described in the first aspect, and the network-side device can be used to execute the steps of the method described in the second aspect.

[0030] In an eleventh aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a program or instructions to implement the method described in the first aspect, or to implement the method described in the second aspect.

[0031] In a twelfth aspect, a computer program / program product is provided. The computer program / program product is stored in a storage medium. The program / program product is executed by at least one processor to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0032] In the embodiments of the present application, the terminal receives the downlink reference signal sent by the network-side device through frequency hopping transmission, processes the downlink reference signals of multiple hops in the frequency hopping transmission to obtain a jointly processed channel state information measurement result and / or a non-jointly processed channel state information measurement result, and then reports a channel state information report to the network-side device. The channel state information report includes the jointly processed channel state information measurement result and / or the non-jointly processed channel state information measurement result, so that the terminal can process the downlink reference signal with a large bandwidth, and the overhead of the channel state information report is small. Description of the Drawings

[0033] Figure 1 A block diagram of a wireless communication system to which embodiments of the present application can be applied is shown;

[0034] Figure 2 It is one of the schematic flowcharts of the downlink reference signal transmission method provided by embodiments of the present application;

[0035] Figure 3 It is a schematic diagram of multiple hop configurations of CSI-RS provided by embodiments of the present application within one CSI-RS resource;

[0036] Figure 4 It is a schematic diagram of the Non-wrapped staircase pattern provided by embodiments of the present application;

[0037] Figure 5 It is a schematic diagram of the Wrapped staircase pattern provided by embodiments of the present application;

[0038] Figure 6 It is a schematic diagram of the staggered pattern provided by embodiments of the present application;

[0039] Figure 7 It is the second schematic flowchart of the downlink reference signal transmission method provided by embodiments of the present application;

[0040] Figure 8 It is the third schematic flowchart of the downlink reference signal transmission method provided by embodiments of the present application;

[0041] Figure 9 It is one of the schematic structural diagrams of the downlink reference signal transmission device provided by embodiments of the present application;

[0042] Figure 10 It is the second schematic structural diagram of the downlink reference signal transmission device provided by embodiments of the present application;

[0043] Figure 11 It is the schematic structural diagram of the communication device provided by embodiments of the present application;

[0044] Figure 12 It is the schematic hardware structure diagram of the terminal provided by embodiments of the present application;

[0045] Figure 13 It is the schematic hardware structure diagram of the network side device provided by embodiments of the present application. Detailed Description of the Embodiments

[0046] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application belong to the scope of protection of the present application.

[0047] The terms "first", "second", etc. in the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are usually of the same type, and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "or" in the present application means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally indicates an "or" relationship between the associated objects before and after.

[0048] The term "indicate" in the present application can be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). Among them, a direct indication can be understood as that the sender clearly tells the receiver specific information, operations to be performed, or request results, etc. in the sent indication; an indirect indication can be understood as that the receiver determines the corresponding information according to the indication sent by the sender, or makes a judgment and determines the operations to be performed or request results, etc. according to the judgment result.

[0049] It should be noted that the technology described in the embodiments of this application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, and 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), or other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used not only in the systems and radio technologies mentioned above, but also in other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes, and uses the NR term in most of the following descriptions, but these technologies can also be applied to systems other than the NR system, such as the 6th Generation (6 th Generation, 6G) communication system.

[0050] Figure 1The block diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network-side device 12. Among them, the terminal 11 can be a mobile phone, a tablet personal computer, a laptop computer, a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device, a flight vehicle, a vehicle user equipment (VUE), a shipborne device, a pedestrian user equipment (PUE), a smart home (home devices with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.), a game console, a personal computer (PC), a teller machine or a self-service machine, etc. Wearable devices include: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle user equipment can also be called a vehicle terminal, a vehicle controller, a vehicle module, a vehicle component, a vehicle chip or a vehicle unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network device or a core network device. Among them, the access network device can also be called a radio access network (RAN) device, a radio access network function or a radio access network unit. The access network device can include a base station, a wireless local area network (WLAN) access point (AP) or a wireless fidelity (WiFi) node, etc.Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home Node B (HNB), home evolved Node B, Transmission Reception Point (TRP), or some other suitable term in the art. 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 the embodiments of this application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0051] Next, with reference to the accompanying drawings, the downlink reference signal transmission method, apparatus, terminal, and network-side device provided in the embodiments of this application will be described in detail through some embodiments and their application scenarios.

[0052] Figure 2 is one of the flow diagrams of the downlink reference signal transmission method provided in the embodiments of this application. This method is applied to a terminal, such as Figure 2 shown, this method includes steps 201 to 203:

[0053] Step 201, the terminal receives the downlink reference signal sent by the network-side device through frequency hopping transmission.

[0054] Optionally, the network-side device sends the downlink reference signal through multiple hops in the frequency hopping transmission. The downlink reference signal is used for the measurement of Channel State Information (CSI). The downlink reference signal may include, but is not limited to, Channel State Information Reference Signal (CSI-RS).

[0055] Step 202: The terminal processes the downlink reference signals of multiple hops in the frequency hopping transmission to obtain a jointly processed channel state information measurement result and / or a non-jointly processed channel state information measurement result.

[0056] Optionally, the jointly processed channel state information measurement result refers to the channel state information measurement result obtained by jointly processing multiple hops. The non-jointly processed channel state information measurement result refers to the channel state information measurement result of each hop. Optionally, the implementation manner of joint processing may include: multiple hops form an equivalent large bandwidth, and the terminal obtains a CSI measurement result based on the CSI-RS of the equivalent large bandwidth. For example, the terminal can obtain wideband CSI according to the equivalent large bandwidth; or the terminal can obtain narrowband CSI after frequency domain compression (such as enhanced type 2 (eType2) codebook feedback) according to the equivalent large bandwidth.

[0057] Step 203: The terminal reports a channel state information report to the network side device, and the channel state information report includes the jointly processed channel state information measurement result and / or the non-jointly processed channel state information measurement result.

[0058] In the embodiment of the present application, the terminal receives the downlink reference signals sent by the network side device through frequency hopping transmission, processes the downlink reference signals of multiple hops in the frequency hopping transmission to obtain a jointly processed channel state information measurement result and / or a non-jointly processed channel state information measurement result, and then reports a channel state information report to the network side device. The channel state information report includes the jointly processed channel state information measurement result and / or the non-jointly processed channel state information measurement result, so that the terminal can process downlink reference signals with a large bandwidth and the overhead of the channel state information report is small.

[0059] Optionally, multiple hops in the frequency hopping transmission are defined within the same downlink reference signal resource.

[0060] Taking the downlink reference signal as CSI-RS as an example, the network side device sends CSI-RS through multiple hops in the frequency hopping transmission. The terminal receives the CSI-RS sent by the network side device in a frequency hopping manner, where multiple hops of the CSI-RS are configured within one CSI-RS resource. Figure 3 It is a schematic diagram of multiple hops of CSI-RS provided in the embodiment of the present application being configured within one CSI-RS resource.

[0061] The embodiments of this application introduce a method of CSI-RS frequency hopping for a terminal to process CSI-RS with a large bandwidth. The terminal processes CSI-RS in a frequency hopping manner, performs CSI frequency domain joint compression on CSI-RS of multiple hops, and obtains a CSI report with a smaller overhead.

[0062] Optionally, in the embodiments of this application, the hop pattern of the frequency hopping transmission includes at least one of the following types:

[0063] pattern 1, staircase pattern; the staircase pattern may include at least one of the following:

[0064] 1) Non-wrapped staircase pattern, the first hop is the hop with the lowest or highest frequency domain position among all hops; Figure 4 is a schematic diagram of the Non-wrapped staircase pattern provided by the embodiments of this application.

[0065] 2) Wrapped staircase pattern, the first hop may not be the hop with the lowest or highest frequency domain position among all hops. Figure 5 is a schematic diagram of the wrapped staircase pattern provided by the embodiments of this application.

[0066] pattern 2, staggered pattern. Figure 6 is a schematic diagram of the staggered pattern provided by the embodiments of this application.

[0067] In the embodiments of this application, the actually adopted frequency hopping pattern may be indicated by the network or agreed upon by the protocol.

[0068] Optionally, in the embodiments of this application, the hop pattern of the frequency hopping transmission may be determined based on at least one of the following hop parameters: frequency hopping frequency domain related parameters; frequency hopping time domain related parameters; time-frequency mapping related parameters.

[0069] Here, each hop parameter is described as follows:

[0070] (1), Frequency hopping frequency domain related parameters, including at least one of the number of hops, hop bandwidth, overlapping bandwidth between adjacent hops in the frequency domain, hop starting physical resource block (Physical Resource Block, PRB), and total hop bandwidth.

[0071] Optionally, the value of the number of hops is N, where N is a positive integer;

[0072] Optionally, the hop bandwidths of multiple hops in the frequency hopping transmission are the same, or the hop bandwidths of the multiple hops may be different. For example: among the multiple hops, the bandwidths of the hop with the lowest and / or highest frequency domain position are different from those of the other hops, while the bandwidths of the other hops are the same. Optionally, the same hop bandwidth of the multiple hops / the hop bandwidth of the first hop can reuse the 'nrofRBs' in the CSI-RS resource parameters.

[0073] Optionally, the overlapping bandwidths between adjacent hops in the frequency domain, or the overlapping bandwidths between adjacent hops in the frequency domain may be different. For example: the overlapping bandwidth between the hop with the highest frequency domain position and its adjacent hop, and / or the overlapping bandwidth between the hop with the lowest frequency domain position and its adjacent hop, are different from the sizes of the other overlapping bandwidths, while the sizes of the other overlapping bandwidths are the same. Optionally, the overlapping bandwidth can be configured to 0. Optionally, when the overlapping bandwidth between adjacent hops in the frequency domain is not configured, it is assumed that there is no overlapping bandwidth between the hops.

[0074] Optionally, the total hop bandwidth represents the total bandwidth of frequency hopping of multiple hops in the frequency hopping transmission. Optionally, the total hop bandwidth does not exceed the bandwidth of a partial bandwidth (Bandwidth Part, BWP) or a 'virtual BWP'. Optionally, the total hop bandwidth can reuse the 'nrofRBs' in the CSI-RS resource parameters.

[0075] Optionally, the hop start PRB is the PRB offset relative to a certain frequency domain reference point, where the frequency domain reference point can be at least one of reference point A (point A), the BWP start point, a separately defined frequency hopping reference point (frequency hopping point A), the frequency domain start point of the CSI-RS resource, or other defined reference points.

[0076] Optionally, the hop start PRB is determined based on at least one of the following:

[0077] 1) The hop start PRB of each hop is configured separately;

[0078] (2) The starting PRB of each hop is determined based on at least one of the starting PRB of the first hop in the configured time domain and / or the starting PRB of the hop with the lowest frequency domain position, the hop bandwidth, and the overlapping bandwidth between adjacent hops in the frequency domain. That is, the starting PRB of each hop can be deduced based on the starting PRB of the first hop in the configured time domain and / or the starting PRB of the hop with the lowest frequency domain position, in combination with the hop bandwidth and the hop overlapping bandwidth. Among them, the starting PRB of the first hop in the time domain and / or the starting PRB of the hop with the lowest frequency domain position can be configured by the network. Optionally, the starting PRB of the first hop in the time domain and / or the starting PRB of the hop with the lowest frequency domain position can reuse the'startingRB' in the existing CSI-RS resource parameters.

[0079] Optionally, the starting PRB of the hop with the lowest frequency domain position can also be referred to as the starting PRB or offset of frequency hopping.

[0080] (2) Time-domain related parameters of frequency hopping, including at least one of the starting slot offset of the hop, the first symbol of the downlink reference signal within the hop, and the period of the hop, or including at least one of at least one starting slot offset of the downlink reference signal resource, N starting symbols of the downlink reference signal resource, and the number of starting symbols occupied by one hop; N is a positive integer.

[0081] Optionally, the time-domain related parameters of frequency hopping can have the following two time-domain parameter configuration methods:

[0082] Parameter configuration method 1: Configure the time-domain related parameters of frequency hopping at the hop level. Among them, the time-domain related parameters of frequency hopping can include at least one of the starting slot offset of the hop, the first symbol of the downlink reference signal within the hop, and the period of the hop.

[0083] Optionally, the starting slot offset of the hop is determined according to one of the following methods:

[0084] 1) The starting slot offset of each hop is configured individually;

[0085] 2) Configure the starting time slot offset of the first hop, and the starting time slot offset of subsequent hops is the relative time slot offset with reference to the starting time slot of the first hop. Optionally, the relative time slot offset can be configured by the network or agreed upon by the protocol. Optionally, if multiple time slots are consecutive, the default time slot offset is 1. Optionally, the starting time slot offset of the first hop in the time domain can reuse the'slot offset' in the existing CSI-RS resource parameters. Optionally, the relative time slot offset is a regular time slot offset or an available slot offset.

[0086] Optionally, the starting time slot offset of the hop is not limited to the time slot offsets corresponding to periodic CSI-RS, semi-persistent CSI-RS, and aperiodic CSI-RS. Optionally, for aperiodic CSI-RS, configure the trigger offset corresponding to each hop respectively; or, configure the trigger offset corresponding to the first hop, and the positions of other hops are determined according to the offset from the first hop.

[0087] Optionally, the starting time slot offsets of each hop are the same, indicating that multiple hops are configured in one time slot, only intra-slot hopping is supported, and only one starting time slot offset can be configured.

[0088] Optionally, the starting symbol of the downlink reference signal within the hop, such as the starting symbol of CSI-RS within the hop. Multiple starting symbols within the hop are used to map different code division multiplexing (CDM) groups corresponding to CSI-RS ports in the time domain. Optionally, the starting symbol of each hop is configured independently. Optionally, at least one starting symbol can be configured for each hop.

[0089] Optionally, if the periods of multiple hops are the same, the period of the CSI-RS resource can be reused.

[0090] Parameter configuration method 2: Only configure the hopping time domain related parameters at the resource level. Among them, the hopping time domain parameters can include at least one of the starting time slot offset of the downlink reference signal resource, N starting symbols of the downlink reference signal resource, and the number of starting symbols occupied by one hop; N is a positive integer.

[0091] Optionally, determine the corresponding time domain position of each hop according to the number of starting symbols occupied by each hop.

[0092] Optionally, at least one starting time slot offset of the downlink reference signal resource, such as at least one starting time slot offset of the CSI-RS resource.

[0093] Optionally, at least one starting time slot offset of the CSI-RS resource is determined according to one of the following methods:

[0094] Method 1: Each starting time slot offset is configured separately

[0095] Method 2: Configure the first starting time slot offset, and subsequent starting time slot offsets are relative time slot offsets with reference to the first starting time slot. Optionally, the relative slot offset can be configured by the network or agreed upon by the protocol. Optionally, if multiple slots are consecutive, the default slot offset is 1. Optionally, the first starting slot offset can reuse the'slot offset' in the existing CSI-RS resource parameters.

[0096] Optionally, the relative slot offset is a regular slot offset or an available slot offset. Optionally, the slot offset is not limited to the slot offsets corresponding to periodic CSI-RS, semi-persistent CSI-RS, and aperiodic CSI-RS.

[0097] Optionally, the CSI-RS resource may only include one starting slot offset, indicating that only intra-slot hopping is supported, and multiple hops occur within one slot; or, multiple slot transmissions are determined according to the symbol-level offset across slots.

[0098] Optionally, N starting symbols of the downlink reference signal resource, such as N starting symbols of the CSI-RS resource, N >= 1. The N first symbols can be in one slot or across multiple slots. Among them, one first symbol corresponds to the same time domain starting position of a group of CDM groups. Optionally, the indexes of the N starting symbols are: 0, 1,..., N - 1.

[0099] Optionally, the N starting symbols of the CSI-RS resource can be determined according to one of the following methods:

[0100] Method 1: Each slot is independently configured with at least 1 first symbol, and the symbol index is relative to the start of the slot. Multiple slots are determined by the above starting slot offset. Optionally, the number of first symbols in different slots is the same; optionally, the positions of the first symbols in different slots are the same.

[0101] Method 2: N first symbols are configured with relative symbol offsets with reference to the start of the slot in the starting slot of the CSI-RS resource or the first first symbol. Optionally, the symbol offset can cross the slot boundary.

[0102] Optionally, the number of starting symbols occupied by one hop can be used to assist in mapping different CDM groups corresponding to CSI-RS ports in the time domain.

[0103] Optionally, the number of starting symbols occupied by one hop can be determined in one of the following ways:

[0104] Method 1: The network configures the number of starting symbols occupied by one hop.

[0105] Method 2: According to the mapping relationship (or mapping table) composed of at least one of the number of ports, frequency domain density, CDM type, CDM group index, and the position of CSI-RS in the slot, determine the number of first symbols occupied by one hop. For example: The network configures the number of first symbols to be 2, but according to the mapping table composed of at least one of the number of ports, frequency domain density, CDM type, CDM group index, and the position of CSI-RS in the slot, it is determined that all ports will occupy 1 first symbol, then one hop occupies 1 first symbol and the number of hops is 2. Or, the number of first symbols occupied by one hop is determined according to the number of first symbols occupied by a complete set of ports, for example, they are equal.

[0106] Optionally, the number of first symbols configured by the network is greater than the number of first symbols used for mapping all ports once; or, the number of first symbols configured by the network is an integer multiple of the number of first symbols used for mapping all ports once.

[0107] Method 3: Determine according to the total number of starting symbols or the number of hops. For example, the number of first symbols occupied by one hop is equal to the total number of starting symbols divided by the number of hops.

[0108] Optionally, if the number of first symbols within one CSI-RS period is not sufficient to support a complete round of frequency hopping (i.e., N hops), then different hops can span CSI-RS periods; or, the actual number of frequency hopping can be the number of hops that can be transmitted within one period, which can be less than N.

[0109] For the case where different hops can span CSI-RS periods, the number of hops within one period is divisible by the total number of hops N. For example, if one period can transmit 1 hop and the total number of hops is N, then a complete round of frequency hopping is transmitted through N periods; if one period can transmit 2 hops and the total number of hops is N, then a complete round of frequency hopping is transmitted through N / 2 periods; if one period can transmit Y hops and the total number of hops is N, then a complete round of frequency hopping is transmitted through N / Y periods. Or, if the number of first symbols occupied by one hop is equal to the number of first symbols of the CSI-RS resource, then different hops are distinguished by different CSI-RS resource periods.

[0110] (3) Time-frequency mapping related parameters, including at least one of the hop time domain index, hop frequency domain index (hop frequency index), and hop direction factor.

[0111] Optionally, the hop time domain index (hop time index), also known as the hop index, or hop time index counter, represents the index of different hops in the time domain. For example, for the first hop in the time domain, hop index = 0; for the last hop in the time domain, hop index is N - 1.

[0112] Optionally, the hop time domain index can be determined in one of the following ways:

[0113] Method 1: Configure a corresponding hop time domain index for each hop. Optionally, configure a corresponding starting slot and first symbol for each hop and associate the corresponding hop time domain index.

[0114] Method 2: Determine the hop time domain index according to the time domain order of the starting slots and first symbols of different hops. For example, for the hop at the forefront of the time domain order, the hop time domain index is 0.

[0115] Method 3: Determine the hop time domain index according to the indexes of the N first symbols of the CSI-RS resource and the number of first symbols occupied by one hop.

[0116] For example, calculate the hop time domain index using the following formula (1):

[0117]

[0118] where, is the hop time domain index, is the index of the first first symbol, and X is the number of first symbols occupied by one hop.

[0119] Optionally, the hop frequency domain index of the first hop and / or the remaining hops represents the index of the hop in the frequency domain. According to the hop frequency domain index of the first hop and / or the remaining hops, the starting PRB of the first hop and / or the remaining hops can be determined. For example: for the first hop in the frequency domain, the hop frequency domain index = 0; the maximum hop frequency domain index = N - 1.

[0120] Optionally, the hop frequency domain index of each hop can be determined by one of the following methods:

[0121] Method 1: Configure the corresponding hop frequency domain index for all hops.

[0122] Method 2: The protocol stipulates the hop frequency domain indexes corresponding to all hops.

[0123] Method 3: Determine the hop frequency domain indexes of the remaining hops according to the hop frequency domain index corresponding to the first hop in the time domain and the hop index.

[0124] For example, for the wrapped staircase pattern, calculate the hop frequency domain indexes of the remaining hops using the following formula (2-1):

[0125]

[0126] where, is the hop frequency domain index of each hop, is the hop index of each hop, is the hop frequency domain index or the hop frequency domain index offset of the first hop, and N hop is the number of hops. The hopping direction factor corresponding to the above formula (2-1) is '+'.

[0127] If the hopping direction factor is '-', the hop frequency domain index of the remaining hops is calculated using the following formula (2-2):

[0128]

[0129] For example, for the staggered pattern, the hop frequency domain index of the remaining hops is calculated using the following formula (3-1):

[0130]

[0131] where, is the hop frequency domain index of each hop, is the hop index of each hop, is the hop frequency domain index or hop frequency domain index offset of the first hop, N hop is the number of hops; the hopping direction factor corresponding to the above formula (3-1) is '+'.

[0132] If the hopping direction factor is '-', the hop frequency domain index of the remaining hops is calculated using the following formula (3-2):

[0133]

[0134]

[0135] Optionally, the hop frequency domain index or hop frequency domain index offset corresponding to the first hop can be determined by formula (4) or configured by the network.

[0136]

[0137] where, is the hop frequency domain index or hop frequency domain index offset of the first hop, is the starting PRB of the first hop, is the hop bandwidth, is the hop overlapping bandwidth. Optionally, if the hop overlapping bandwidth is 0, then

[0138] Optionally, the hop frequency domain index corresponding to the first hop can be configured by the network, or determined according to a formula, or agreed upon by a protocol;

[0139] Optionally, for the Non-wrapped staircase pattern, the hop frequency domain index corresponding to the first hop = 0 or, the hop frequency domain index corresponding to the first hop = N hop-1. The frequency domain indices of the remaining hops are incremented or decremented by one in sequence. Optionally, specifically whether to increment or decrement by one, and the first hop frequency domain index = 0 or N hop -1 depends on the frequency hopping direction factor.

[0140] Method 4: Determine the hop frequency domain index of each hop according to the hop frequency domain index corresponding to the first hop in the time domain, in combination with the relative frequency domain index of the remaining hops relative to the first hop as agreed upon by the network configuration / protocol.

[0141] Optionally, the default relative frequency domain index corresponding to the first hop in the time domain is 0. The relative frequency domain indices are {0, 2, 3, 1}, respectively representing the relative frequency domain indices of the first hop to the Nth hop in the time domain.

[0142] Optionally, determine the starting PRB position of each hop according to the hop frequency domain index.

[0143] For example, calculate the offset of the starting PRB of each hop relative to the starting PRB of the hop with the lowest frequency domain position using the following formula (5):

[0144]

[0145] Wherein, is the offset relative to the starting PRB of the hop with the lowest frequency domain position, is the hop frequency domain index of each hop, is the hop bandwidth, is the hop overlapping bandwidth, is the number of subcarriers within an RB.

[0146] Alternatively, calculate the offset of the starting PRB of each hop relative to the starting PRB of the hop with hop index 0 using the following formula.

[0147]

[0148] Optionally, the hop direction factor indicates whether the frequency domain of the next hop is higher or lower than that of the previous hop.

[0149] It should be noted that the hop parameters described in the embodiments of the present application may include at least one of the following: parameters configured by the network; intermediate parameters generated during the process of determining the hop pattern; parameters agreed upon by the protocol.

[0150] Optionally, in the embodiments of the present application, the frequency hopping transmission satisfies at least one of the following:

[0151] 1. The hop boundary with the lowest and / or highest frequency domain position in the frequency hopping transmission is aligned with the boundary of a specific frequency domain range, where the specific frequency domain range includes at least one of an active bandwidth part (active BWP), a virtual BWP, a carrier, a total hop bandwidth boundary, or some other specific frequency domain range.

[0152] Among them, the alignment of the hop boundary with the lowest and / or highest frequency domain position in the frequency hopping transmission with the boundary of the specific frequency domain range includes at least one of the following:

[0153] a. If the frequency domain position of the hop with the lowest and / or highest frequency domain position determined according to the hop bandwidth exceeds the specific frequency domain range, the resources in the hop that exceed the specific frequency domain range are not used for transmitting downlink reference signals;

[0154] b. If the frequency domain position of the hop with the lowest and / or highest frequency domain position determined according to the hop bandwidth and the same hop overlapping bandwidth exceeds the specific frequency domain range, at least one of the starting PRB of the hop and the overlapping bandwidth between the hop and the adjacent hop in the frequency domain is adjusted, allowing the overlapping bandwidth between the hop adjacent to the hop in frequency to be greater than the overlapping bandwidth between other hops, so that the frequency domain position of the hop falls within the specific frequency domain range and is aligned with the boundary of the specific frequency domain range.

[0155] 2. Each hop boundary in the frequency hopping transmission is aligned with the subband boundary.

[0156] Among them, the alignment of each hop boundary in the frequency hopping transmission with the subband boundary includes at least one of the following:

[0157] a. The starting PRB of each hop is aligned with the starting PRB of the subband;

[0158] b. The ending PRB of each hop is aligned with the ending PRB of the subband;

[0159] c. The overlapping bandwidth between adjacent hops in the frequency domain is an integer multiple of the subband;

[0160] d. The bandwidth of each hop is an integer multiple of the subband.

[0161] In one implementation, each hop boundary is aligned with the subband boundary, and a or b is selected, that is, only the starting or ending PRB is restricted to be aligned with the subband boundary;

[0162] In one implementation, each hop boundary is aligned with the subband boundary, and a, b, c, d are selected, then the hop frequency domain range is completely restricted to be aligned with the subband.

[0163] The hop boundary is aligned with the sub-band boundary, which can minimize the overlapping part between the sub-band and two hops as much as possible and reduce the complexity of sub-band CSI reporting.

[0164] 3. Among the hop parameters of different downlink reference signal resources in a resource set, other hop parameters are the same except for the hop time domain position.

[0165] For example, for different CSI-RS resources in a resource set, other hopping parameters (such as the number of hops, hop pattern, hop bandwidth, total hop bandwidth, hop overlapping bandwidth, etc.) are the same except for the hop time domain position.

[0166] Optionally, within the frequency domain range corresponding to a certain hop, if two CSI-RS resources are adjacent in the time domain and resource1 is before resource 2, the terminal does not expect the start time of the next hop of resource 1 to conflict with the end time of the current hop of resource2.

[0167] 4. The terminal does not expect the interval between adjacent hops in the time domain to exceed the first switching time; the first switching time is determined by at least one of network indication, protocol convention, or terminal capability.

[0168] 5. The terminal does not expect the downlink reference signal within a hop to cross the slot boundary. For example, the terminal does not expect the CSI-RS within a hop to cross the slot boundary.

[0169] 6. The terminal does not expect the hop bandwidth to exceed the maximum bandwidth supported by the terminal.

[0170] 7. The same port on different hops uses the same sequence during sequence mapping; that is, the same scrambling ID, slot index, and symbol index.

[0171] 8. Each hop in the frequency hopping transmission maps all downlink reference signal ports. For example, for any hop, a complete CSI-RS port must be mapped.

[0172] Optionally, from the perspective of flexibility, the first parameter in the hop parameters is carried by at least one of the following messages:

[0173] 1) Medium Access Control (MAC) Control Element (CE);

[0174] 2) Downlink Control Information (DCI).

[0175] The second parameter in the hop parameter is configured by high-layer signaling and / or protocol convention.

[0176] For example, the first parameter includes the hop frequency domain index of the first hop in the frequency hopping transmission.

[0177] Optionally, at least one of the following parameters of different hops in the frequency hopping transmission is the same (these parameters are configured at the CSI-RS resource level (per CSI-RS resource), not at the hop level (per hop)):

[0178] 1) Downlink reference signal resource identifier; for example, CSI-RS resource ID.

[0179] 2) Power control offset; for example, powerControlOffset or 'owerControlOffsetSS. In other words, the transmission power of different hops is the same.

[0180] 3) Scrambling identifier; for example, scramblingID.

[0181] 4) Quasi-co-location (QCL) parameter; for example, qcl-InfoPeriodicCSI-RS.

[0182] 5) Frequency domain allocation parameter within a resource block (RB); for example, frequencyDomainAllocation.

[0183] 6) Number of downlink reference signal ports included in a hop; for example, nrofPorts. That is, all CSI-RS ports included in one hop.

[0184] 7) Port index included in a hop; that is, each hop includes all CSI-RS ports, and ports with the same port index in different hops belong to the same port.

[0185] 8) Code division multiplexing (CDM) type; for example, cdm-Type.

[0186] 9) CDM group size. That is, the CDM Group size is the number of ports included in one CDM group.

[0187] 10) CDM group index; that is, CDM groups with the same CDM group index in different hops belong to the same CDM group.

[0188] 11) Frequency domain density.

[0189] Optionally, during the process that the terminal receives the downlink reference signal sent by the network side device through frequency hopping transmission, the reception of the terminal satisfies any of the following:

[0190] 1. The terminal ignores or does not receive the hops outside the active BWP range.

[0191] That is, the terminal only receives the hops within the active BWP range. Correspondingly, the terminal does not expect to receive the hops outside the active BWP range, or the terminal does not expect the frequency hopping configuration to be outside the active BWP.

[0192] For example, for a certain hop, if then the terminal should assume that the initial CRB index of the CSI-RS resource is Otherwise N initialRB = startingRB.

[0193] If then the terminal should assume that the bandwidth of the CSI-RS resource is Otherwise

[0194] where startingRB is the starting PRB position of the hop configured by the network, nrofRBs is the hop bandwidth configured by the network, is the starting point of the active BWP, is the active BWP size, N initialRb is the initial CRB index of the hop, is the actual bandwidth of the hop.

[0195] 2. The terminal receives the hops outside the active BWP range.

[0196] Optionally, when the target condition is satisfied, the terminal receives the hops outside the active BWP range, where the target condition includes at least one of the following:

[0197] 1) Network configuration enabling condition, used to enable the terminal to allow receiving the hops outside the active BWP range.

[0198] 2) Network configuration of the hops of the downlink reference signal; for example, network configuration of CSI-RS frequency hopping.

[0199] 3) Network configuration of the measurement gap (MG);

[0200] 4) Configure a virtual BWP for the network.

[0201] Optionally, the implementation method for the terminal to receive hops outside the active BWP scope may include at least one of the following:

[0202] Method 1: The terminal ignores the frequency-domain range limitation of the hops of the downlink reference signal by the active BWP.

[0203] Method 2: The network configures an MG, and the terminal receives or measures multiple hops in the MG during the frequency hopping transmission.

[0204] Method 3: The network configures a virtual BWP or a virtual wideband, and the terminal receives or measures multiple hops in the virtual BWP during the frequency hopping transmission.

[0205] Among them, the virtual BWP satisfies at least one of the following:

[0206] 1) The bandwidth of the virtual BWP is greater than the maximum bandwidth supported by the terminal.

[0207] 2) At the same moment (such as the same OFDM symbol), the bandwidth received or processed by the terminal in the virtual BWP does not exceed the maximum bandwidth supported by the terminal.

[0208] 3) The bandwidth of the virtual BWP does not exceed the maximum total bandwidth of hops supported by the terminal for joint processing.

[0209] 4) The bandwidth of the virtual BWP does not exceed the carrier bandwidth.

[0210] 5) The bandwidth range of the virtual BWP includes the total hop bandwidth, or the bandwidth range of the virtual BWP is the same as the total hop bandwidth range, or the bandwidth range of the virtual BWP does not exceed the total hop bandwidth configured by the network.

[0211] If the CSI-RS frequency hopping is configured at the terminal level, then the virtual BWP bandwidth includes the total hop bandwidth or is the same as the total hop bandwidth range.

[0212] If the CSI-RS frequency hopping is not configured at the terminal level, then the virtual BWP bandwidth may not exceed the total hop bandwidth, and the terminal can only process the hops within the virtual BWP bandwidth.

[0213] 6) The terminal only processes the downlink reference signal on the virtual BWP.

[0214] 7) The parameter set of the virtual BWP is the same as that of the downlink reference signal.

[0215] 8) The frequency-domain position reference point of the virtual BWP is the starting point of the carrier or Point A.

[0216] Optionally, the virtual BWP can also be expressed as 'virtual broadband' and is used to receive downlink reference signal hops outside the active BWP.

[0217] Optionally, when the terminal receives a hop outside the active BWP range or the network configures a virtual BWP, the terminal meets at least one of the following:

[0218] 1) The terminal ignores the BWP ID included in the downlink reference signal configuration.

[0219] 2) The terminal does not expect the BWP ID to be included in the downlink reference signal configuration.

[0220] 3) The BWP ID included in the downlink reference signal configuration received by the terminal is used to indicate the virtual BWP.

[0221] Optionally, for the activation / deactivation of semi-persistent downlink reference signals, the terminal does not expect the activation / deactivation message to include a BWP identifier; or, the terminal ignores the BWP identifier included in the activation / deactivation message; or, the BWP ID in the activation / deactivation message received by the terminal is used to indicate the 'virtual BWP'; or, the field in the activation / deactivation message received by the terminal needs to include a field indicating the 'virtual BWP'.

[0222] Optionally, the virtual BWP is configured in the channel state information reporting configuration or in the downlink positioning reference signal configuration.

[0223] Optionally, the terminal receives hops within the frequency-domain range of the virtual BWP.

[0224] For example, for a certain hop, if then the terminal should assume that the initial CRB index of the CSI-RS resource is Otherwise N initialRB = startingRB.

[0225] If then the terminal should assume that the bandwidth of the CSI-RS resource is Otherwise

[0226] where startingRB is the starting PRB position of the hop configured by the network, nrofRBs is the hop bandwidth configured by the network, is the starting point of the virtual BWP, is the virtual BWP size, N initialRBis the initial CRB index of the hop, is the actual bandwidth of the hop.

[0227] Optionally, after the terminal measures all hops in the frequency hopping transmission, it switches to the active BWP.

[0228] Optionally, when the interval between two adjacent hops in the time domain is greater than the second switching time, between the two adjacent hops in the time domain, the terminal switches to the active BWP. For example, the second switching time is equal to twice the switching time between frequency hopping and the active BWP.

[0229] Optionally, the terminal processes the downlink reference signals of multiple hops in the frequency hopping transmission to obtain a jointly processed channel state information measurement result and / or a non-jointly processed channel state information measurement result; the terminal reports a channel state information report, and the channel state information report includes the jointly processed channel state information measurement result and / or the non-jointly processed channel state information measurement result. For example, the terminal reports a single-hop CSI measurement result and / or a CSI measurement result jointly estimated from multiple hops according to CSI-RS measurement.

[0230] Optionally, the channel state information CSI report includes at least one of the following:

[0231] 1. The first measurement result, where the first measurement result includes: the channel state information measurement results of X hops in the frequency hopping transmission or the channel state information measurement results of all hops in the frequency hopping transmission; X is a positive integer.

[0232] Among them, the first measurement result, such as a single-hop CSI measurement result, can be one of the following:

[0233] 1) The measurement result of each of the X hops among multiple hops; X can be determined by at least one of network configuration, protocol convention, or terminal selection. For example, X is the number of hops actually measured or processed by the terminal.

[0234] 2) The measurement result of each hop among multiple hops. For example, when reporting, the terminal needs to process all hops before reporting.

[0235] Optionally, when the terminal reports a broadband CSI measurement result, the broadband corresponds to the hop; or, when the terminal reports a subband CSI measurement result, the subband CSI measurement result is obtained by the terminal without joint processing / compression of multiple hops.

[0236] 2. The first indication information, which is used to indicate that the first measurement result is a channel state information measurement result of single-hop.

[0237] The terminal carries the first indication information in the channel state information report, and the first indication information is used to indicate that the first measurement result corresponds to single-hop.

[0238] 3. The first frequency hopping information, which is used to indicate the hop information associated with the first measurement result.

[0239] The terminal reports the hop information associated with the first measurement result, and the hop is at least one hop actually processed by the terminal. The hop information includes at least one of the following information of at least one hop: hop index; hop frequency index; hop frequency domain range.

[0240] 4. The second measurement result, which includes: the channel state information measurement result jointly processed by Y hops in the frequency hopping transmission or the channel state information measurement result jointly processed by all hops in the frequency hopping transmission; Y is a positive integer.

[0241] Among them, the second measurement result, such as the CSI measurement result jointly estimated by multiple hops (multiple hops), can be one of the following:

[0242] 1) The measurement result jointly estimated by Y hops among multiple hops; Y can be determined by at least one of network configuration, protocol agreement or terminal selection. For example, Y is the number of hops actually measured or processed by the terminal. When reporting, if the terminal has not processed all the hops, then the terminal can only report the measurement results of the processed hops.

[0243] For example, before the CSI reference resource (CSI reference resource), if the terminal can only complete the measurement or processing of some hops, then the terminal can only report the measurement results of the processed hops.

[0244] 2) The measurement result jointly estimated by all hops among multiple hops. For example, when reporting, the terminal needs to process all the hops before reporting.

[0245] Optionally, the terminal reports the broadband CSI measurement result, and the broadband corresponds to multiple hops; or, the terminal reports the subband CSI measurement result, and the subband CSI measurement result is obtained by the terminal jointly performing frequency domain compression on multiple hops.

[0246] 5. The second indication information, which is used to indicate that the second measurement result is a channel state information measurement result of multi-hop joint processing.

[0247] The terminal indicates, through second indication information in the channel state information report, that the first measurement result corresponds to multiple hop.

[0248] 6. Second frequency hopping information, where the second frequency hopping information is used to indicate the hop information associated with the second measurement result.

[0249] The terminal reports the hop information associated with the second measurement result, where the hop is at least one hop actually processed by the terminal. The hop information includes at least one of the following information of at least one hop: number of hops; hop index; hop frequency index; hop frequency domain range.

[0250] Optionally, before reporting the channel state information report, the terminal receives a network indication, and the network indication is reported in one of the ways of single hop, Multiple hop, or single hop + multiple hop. Among them, single hop + multiple hop means that the terminal reports two types of measurement results simultaneously, that is, reports the first measurement result and the second measurement result simultaneously.

[0251] Optionally, the hop information to be measured is indicated in the network indication, and the hop information includes at least one of the following information of at least one hop: number of hops; hop index; hop frequency index; hop frequency domain range.

[0252] For example, after the terminal receives the hop configuration, the network further flexibly indicates the hop information to be measured, such as indicating in the field indicated by DCI or MAC CE.

[0253] For another example, in the indication field of aperiodic or semi-persistent CSI reporting, the hop information to be measured is further indicated, indicating the hop information to be measured associated with this aperiodic or semi-persistent CSI reporting.

[0254] Optionally, the terminal receives the reporting indication information sent by the network side device, and the reporting indication information is used to indicate that the terminal performs joint processing on the downlink reference signals of multiple hops. Further, the network side device can indicate the CSI-RS bandwidth and / or at least one hop index for the terminal to process. Optionally, the implementation manner for the terminal to report the channel state information report to the network side device may include:

[0255] In the case where at least one port of one or more target hops in the frequency hopping transmission is discarded, the terminal reports the channel state information report to the network side device based on the target manner;

[0256] Among them, at least one of the following for the target mode:

[0257] Mode 1: Ignore the measurement and / or reporting of the current channel state information.

[0258] Mode 2: Ignore the measurement and / or reporting of all ports of the target hop.

[0259] Do not consider all ports of the target hop. For example, ignore the current channel state information report, or the current channel state information report is obtained based on a hop with complete ports.

[0260] For example, if the current channel state information report includes wideband CSI reporting, ignore the current wideband CSI reporting, or report the wideband CSI report of the actually used hop.

[0261] Or, if the current channel state information report includes subband CSI reporting, ignore the current subband CSI reporting, or report the subband CSI of the actually used hop.

[0262] Mode 3: Consider the measurement and / or reporting of the non-discarded ports of the target hop.

[0263] When considering the measurement and / or reporting of the non-discarded ports of the target hop, the channel state information report includes at least one of the following:

[0264] 1) Measurement results of wideband channel state information obtained based on multiple hops with complete ports in frequency hopping transmission.

[0265] 2) Measurement results of subband channel state information obtained based on multiple hops with complete ports in frequency hopping transmission.

[0266] 3) Measurement results of subband channel state information corresponding to the hop obtained based on a hop in which at least some ports are discarded in frequency hopping transmission.

[0267] 4) Measurement results of wideband channel state information obtained based on the complete ports in all hops of frequency hopping transmission.

[0268] 5) Measurement results of subband channel state information obtained based on the complete ports in all hops of frequency hopping transmission.

[0269] According to 4) or 5), in one implementation: The network configures 4 hops, and each hop is configured with 8 ports. Four ports of one hop are dropped, then the terminal reports 4 hops and the measurement results of wideband or subband channel state information of the remaining 4 ports.

[0270] Optionally, the terminal performs downlink reference signal measurement and / or reports the measurement result of channel state information according to at least one set of sub-band configurations, where the set of sub-band configurations includes at least one of the start point of the sub-band, the end point of the sub-band, the bitmap of the sub-band, and the size of the sub-band.

[0271] For example, the terminal measures and reports CSI in the frequency domain according to at least one set of sub-band configurations in wideband or sub-band.

[0272] At least one of the start point of the sub-band, the end point of the sub-band, and the bitmap of the sub-band in the sub-band configuration is determined according to the target frequency domain range; where the target frequency domain range includes at least one of active BWP, virtual BWP, carrier, the entire hop frequency domain range of downlink reference signal hopping, and each hop frequency domain range.

[0273] Optionally, the size of the first subband can be smaller than the sizes of other subbands to align with the first PRB of the target frequency domain range. For example, the size of the first subband is where is the subband size, is the starting PRB of the target frequency domain range.

[0274] The size of the last subband can be smaller than the sizes of other subbands to align with the last PRB of the target frequency domain range.

[0275] For example, the size of the last subband is:

[0276] If then the size of the last subband is where is the subband size, is the starting PRB of the target frequency domain range, is the size of the target frequency domain range.

[0277] If then the size of the last subband is

[0278] Optionally, the size of the subband in the subband configuration is mapped according to the target bandwidth; or, the size of the subband in the subband configuration is indicated by the network-side device from at least one candidate value, and the at least one candidate value is mapped according to the target bandwidth; where the target bandwidth includes at least one of the bandwidth consistent with the target frequency domain range, the hop bandwidth, the hop bandwidth with the smallest bandwidth, the hop bandwidth with the largest bandwidth, and the bandwidth indicated by the network-side device. For example, subbands are configured for each hop.

[0279] Optionally, the start point, end point, and bitmap of the subband are determined according to the frequency domain range of the larger bandwidth (such as one of the other target frequency domain ranges in the target frequency domain range except for the frequency domain range of each hop), and the subband size is determined according to the hop bandwidth.

[0280] Optionally, the subband configuration satisfies: when there is no overlapping bandwidth between adjacent hops in the frequency domain, the terminal does not expect a subband to contain multiple hops.

[0281] Optionally, each hop is associated with or configured with a set of subband configurations, or multiple hops are associated with or configured with the same subband configuration.

[0282] Optionally, there can be one or more sets of subband configurations. Specifically,

[0283] 1) The subband configuration is one set, that is, CSI is measured and reported through one set of subband configurations.

[0284] 2) The subband configuration is multiple sets, that is, one set of subband configurations is configured for each hop.

[0285] For example, the start point, end point, size, and bitmap of the subband are determined according to the frequency domain range of each CSI-RS hop. For the CSI measurement result of a certain hop, the terminal reports the CSI measurement result of the subband corresponding to the frequency domain range of this hop.

[0286] For another example, the start point, end point, size, and bitmap length of the subband are determined according to other frequency domain ranges (such as virtual BWP) and are consistent, but multiple sets of subband bitmap contents are configured for different hops.

[0287] Optionally, the subband configuration is associated with a hop index. Optionally, if different hops are associated with different downlink reference signal resources or downlink reference signal resource sets, then the subband configuration associated with the hop can also be understood as the subband configuration associated with the corresponding downlink reference signal resource or downlink reference signal resource set. Specifically, the subband configuration can be associated with a downlink reference signal resource identifier or a downlink reference signal resource set identifier.

[0288] Optionally, if there is an overlap between hops adjacent in the frequency domain, the bit value corresponding to the subband where the overlap is located in the bitmap of the subbands is '1'.

[0289] Optionally, the measurement result of the channel state information for joint processing includes at least one of the following: the measurement result of the subband channel state information (subband CSI) for joint processing and the measurement result of the wideband channel state information (wideband CSI) for joint processing. Among them, the measurement result of the subband channel state information (subband CSI) for joint processing, where the subband CSI measurement result is the result obtained by performing joint frequency domain compression after compensating for the phase offset between multiple hops in the frequency hopping transmission. Among them, the measurement result of the wideband channel state information (wideband CSI) for joint processing, the subband CSI measurement result is the wideband CSI result obtained after compensating for the phase offset between multiple hops in the frequency hopping transmission to obtain an equivalent wideband.

[0290] If a certain subband contains N hops, then the subband CSI measurement result may include at least one of the following:

[0291] 1) N1 sets of channel state information measurement results, where the N1 sets of channel state information measurement results include the channel state information measurement results of the N1 hops included in the subband; N1 is a positive integer.

[0292] N1 sets of channel state information measurement results, for example, the N1 sets of CSI measurement results are respectively associated with different hops. Further, reporting the N1 sets of CSI measurement results is associated with at least one of the subband index, hop index, hop frequency index, and hop frequency domain position.

[0293] Optionally, the N1 sets of CSI measurement results are obtained by at least one of the following implementation methods:

[0294] Method 1: There is no frequency domain overlap among the N1 hops, and N sets of results are obtained.

[0295] Method 2: There is frequency-domain overlap for N1 hops, but the overlap bandwidth is small (for example, not exceeding a certain threshold), and N1 groups of results are obtained.

[0296] Method 3: There is frequency-domain overlap for N1 hops. In addition to the overlap bandwidth, this subband also corresponds to N1 hops, and N1 groups of results are obtained.

[0297] Method 4: There is frequency-domain overlap for N1 hops, and the overlap bandwidth is completely aligned with this subband, and N groups of results are reported.

[0298] 2) A set of channel state information measurement results, where the set of channel state information measurement results is jointly processed based on the N1 hops included in the subband.

[0299] A set of channel state information measurement results, for example, a set of CSI measurement results is obtained according to the processing results of N hops. Further, the associated hop information is reported in this set of CSI measurement results. The hop information includes at least one of the hop index, hop frequency index, and hop frequency-domain position.

[0300] Optionally, a set of CSI measurement results is the result obtained by jointly processing multiple hops after compensating for the phase error according to the processing results of N hops.

[0301] Optionally, the set of CSI measurement results is obtained by at least one of the following implementation methods:

[0302] Method 1: There is no frequency-domain overlap for N hops, and 1 group of results is obtained.

[0303] Method 2: There is frequency-domain overlap for N hops, and 1 group of results is obtained.

[0304] Method 3: There is frequency-domain overlap for N hops. In addition to the overlap bandwidth, this subband only corresponds to 1 hop, and 1 group of results is obtained.

[0305] Method 4: There is frequency-domain overlap for N hops, and the overlap bandwidth is large (for example, not less than a certain threshold), and 1 group of results is obtained.

[0306] Method 5: There is frequency-domain overlap for N hops, and the overlap bandwidth is completely aligned with this subband, and 1 group of results is obtained.

[0307] Optionally, the subband contains one set of CSI results, which are the results estimated based on one hop. That is, there is only a small overlap between the subband and a certain hop, and the measurement results of the subband for this hop are ignored.

[0308] 3) The third frequency hopping information, which is used to indicate or characterize the hop information associated with the measurement result of the channel state information of the subband.

[0309] Optionally, the terminal reports terminal capability information to the network-side device, where the terminal capability information includes at least one of the following:

[0310] 1) The maximum wideband channel state information processing bandwidth processed by the terminal at the same time;

[0311] 2) The total hop bandwidth; for example, the maximum CSI joint processing bandwidth;

[0312] 3) Whether it supports processing downlink reference signals outside the active BWP;

[0313] 4) Whether it supports downlink reference signal frequency hopping;

[0314] 5) Whether it supports downlink reference signal cross-slot frequency hopping;

[0315] 6) The maximum number of hops;

[0316] 7) The maximum overlapping bandwidth;

[0317] 8) The maximum bandwidth of each hop;

[0318] 9) The switching time between adjacent hops

[0319] 10) Whether it supports 'virtual BWP'.

[0320] Figure 7 It is the second schematic flow chart of the downlink reference signal transmission method provided by the embodiments of the present application. This method is applied to a network-side device, such as Figure 7 shown, and this method includes steps 701 to step 702:

[0321] Step 701, the network-side device sends a downlink reference signal to the terminal through frequency hopping transmission.

[0322] Optionally, the network-side device sends a downlink reference signal through multiple hops in the frequency hopping transmission. The downlink reference signal is used for the measurement of Channel State Information (CSI). The downlink reference signal may include a Channel State Information Reference Signal (CSI-RS).

[0323] Step 702: The network-side device receives the channel state information report reported by the terminal. The channel state information report includes the jointly processed channel state information measurement result and / or the non-jointly processed channel state information measurement result obtained by the terminal after processing the downlink reference signals of multiple hops in the frequency hopping transmission.

[0324] Optionally, the jointly processed channel state information measurement result refers to the channel state information measurement result obtained by the terminal through joint processing of multiple hops. The non-jointly processed channel state information measurement result refers to the channel state information measurement result of each hop by the terminal.

[0325] In the embodiment of the present application, the network-side device sends a downlink reference signal to the terminal through frequency hopping transmission. The terminal receives the downlink reference signal sent by the network-side device through frequency hopping transmission, processes the downlink reference signals of multiple hops in the frequency hopping transmission, obtains the jointly processed channel state information measurement result and / or the non-jointly processed channel state information measurement result, and then reports a channel state information report to the network-side device. The channel state information report includes the jointly processed channel state information measurement result and / or the non-jointly processed channel state information measurement result, so that the terminal can process the downlink reference signal with a large bandwidth and the overhead of the channel state information report is small.

[0326] Optionally, the multiple hops in the frequency hopping transmission are defined within the same downlink reference signal resource.

[0327] Optionally, the hop pattern of the frequency hopping transmission is determined based on at least one of the following hop parameters:

[0328] Frequency hopping frequency domain related parameters, including at least one of the number of hops, hop bandwidth, overlapping bandwidth between adjacent hops in the frequency domain, starting physical resource block (PRB) of the hop, and total bandwidth of the hop;

[0329] Frequency hopping time-domain related parameters, including at least one of the starting time slot offset of the hop, the starting symbol of the downlink reference signal within the hop, and the period of the hop, or including at least one of at least one starting time slot offset of the downlink reference signal resource, N starting symbols of the downlink reference signal resource, and the number of starting symbols occupied by one hop; N is a positive integer;

[0330] Time-frequency mapping related parameters, including at least one of the hop time-domain index, the hop frequency-domain index, and the hop direction factor.

[0331] Optionally, the hop starting PRB is determined based on at least one of the following:

[0332] The hop starting PRB of each hop is configured separately;

[0333] The hop starting PRB of each hop is determined according to the hop starting PRB, the hop bandwidth, and the overlapping bandwidth between adjacent hops in the frequency domain of the first hop in the configured time domain and / or the hop with the lowest frequency domain position.

[0334] Optionally, the frequency hopping transmission satisfies at least one of the following:

[0335] The boundaries of the hop with the lowest and / or highest frequency domain position in the frequency hopping transmission are aligned with the boundaries of a specific frequency domain range, and the specific frequency domain range includes at least one of the active part bandwidth (active BWP), the virtual BWP, the carrier, and the hop total bandwidth boundary;

[0336] The boundary of each hop in the frequency hopping transmission is aligned with the subband boundary;

[0337] Among the hop parameters of different downlink reference signal resources within a resource group, other hop parameters are the same except for the hop time-domain position;

[0338] The terminal does not expect the interval between adjacent hops in the time domain to exceed the first handover time; the first handover time is determined by at least one of network indication, protocol agreement, and terminal capability;

[0339] The terminal does not expect the downlink reference signal within one hop to cross the time slot boundary;

[0340] The terminal does not expect the hop bandwidth to exceed the maximum bandwidth supported by the terminal;

[0341] The same port on different hops uses the same sequence during sequence mapping;

[0342] Each hop in the frequency hopping transmission maps all downlink reference signal ports.

[0343] Optionally, the hop boundaries with the lowest and / or highest frequency-domain positions in the frequency-hopping transmission are aligned with the boundaries of a specific frequency-domain range, including at least one of the following:

[0344] If the frequency-domain position of the hop with the lowest and / or highest frequency-domain position exceeds the specific frequency-domain range, the resources in the hop that exceed the specific frequency-domain range are not used for transmitting downlink reference signals;

[0345] If the frequency-domain position of the hop with the lowest and / or highest frequency-domain position exceeds the specific frequency-domain range, at least one of the starting PRB of the hop and the overlapping bandwidth between the hop and the adjacent hop in the frequency domain is adjusted so that the frequency-domain position of the hop falls within the specific frequency-domain range.

[0346] Optionally, each hop boundary in the frequency-hopping transmission is aligned with a subband boundary, including at least one of the following:

[0347] The starting PRB of each hop is aligned with the starting PRB of the subband;

[0348] The ending PRB of each hop is aligned with the ending PRB of the subband;

[0349] The overlapping bandwidth between adjacent hops in the frequency domain is an integer multiple of the subband;

[0350] The bandwidth of each hop is an integer multiple of the subband.

[0351] Optionally, at least one of the following parameters of different hops in the frequency-hopping transmission is the same:

[0352] Downlink reference signal resource identifier;

[0353] Power control offset;

[0354] Scrambling code identifier;

[0355] Quasi-co-location QCL parameters;

[0356] Frequency-domain allocation parameters within a resource block RB;

[0357] Number of downlink reference signal ports included in a hop;

[0358] Port index included in a hop;

[0359] Code division multiplexing CDM type;

[0360] CDM group size;

[0361] CDM group index;

[0362] Frequency-domain density.

[0363] Optionally, the first parameter in the hop parameter is carried by at least one of the following messages: Media Access Control (MAC) Control Element (CE) and Downlink Control Information (DCI);

[0364] The second parameter in the hop parameter is configured by high-layer signaling and / or protocol convention.

[0365] Optionally, the channel state information report includes at least one of the following:

[0366] A first measurement result, where the first measurement result includes: the channel state information measurement results of each of the X hops in the frequency hopping transmission or the channel state information measurement results of each of all the hops in the frequency hopping transmission; X is a positive integer;

[0367] A first indication information, where the first indication information is used to indicate that the first measurement result is the channel state information measurement result of a single hop;

[0368] A first frequency hopping information, where the first frequency hopping information is used to indicate the hop information associated with the first measurement result;

[0369] A second measurement result, where the second measurement result includes: the channel state information measurement results jointly processed by Y hops in the frequency hopping transmission or the channel state information measurement results jointly processed by all the hops in the frequency hopping transmission; Y is a positive integer;

[0370] A second indication information, where the second indication information is used to indicate that the second measurement result is the channel state information measurement result jointly processed by multiple hops;

[0371] A second frequency hopping information, where the second frequency hopping information is used to indicate the hop information associated with the second measurement result.

[0372] Optionally, the channel state information report includes at least one of the following:

[0373] The wideband channel state information measurement result obtained based on multiple hops with complete ports in the frequency hopping transmission;

[0374] The sub-band channel state information measurement result obtained based on multiple hops with complete ports in the frequency hopping transmission;

[0375] The sub-band channel state information measurement result obtained based on hops where at least some ports are discarded in the frequency hopping transmission;

[0376] The wideband channel state information measurement result obtained based on the complete ports among all the hops in the frequency hopping transmission;

[0377] The sub-band channel state information measurement result obtained based on the complete ports among all the hops in the frequency hopping transmission.

[0378] Optionally, the network side device sends reporting indication information to the terminal, where the reporting indication information is used to instruct the terminal to perform joint processing on downlink reference signals of multiple hops.

[0379] Optionally, the measurement result of the channel state information obtained by the joint processing includes: the measurement result of the subband channel state information (subband CSI) obtained by the joint processing, where the subband CSI measurement result is the result of frequency domain compression after compensating for the phase offset between multiple hops in the frequency hopping transmission.

[0380] Optionally, the subband CSI measurement result includes at least one of the following:

[0381] N1 sets of channel state information measurement results, where the N1 sets of channel state information measurement results include the channel state information measurement results of each of the N1 hops included in the subband; N1 is a positive integer;

[0382] One set of channel state information measurement results, where the one set of channel state information measurement results is obtained by performing joint processing based on the N1 hops included in the subband;

[0383] Third frequency hopping information, where the third frequency hopping information is used to indicate the hop information associated with the channel state information measurement result of the subband.

[0384] Optionally, the network side device receives the terminal capability information reported by the terminal, where the terminal capability information includes at least one of the following:

[0385] The maximum wideband channel state information processing bandwidth that the terminal can process at the same time;

[0386] Total hop bandwidth;

[0387] Whether it supports processing downlink reference signals outside the active BWP;

[0388] Whether it supports downlink reference signal frequency hopping;

[0389] Whether it supports downlink reference signal cross-slot frequency hopping;

[0390] Maximum number of hops;

[0391] Maximum overlapping bandwidth;

[0392] Maximum bandwidth of each hop;

[0393] Switching time between adjacent hops.

[0394] Figure 8FIG. 3 is a schematic flowchart of a downlink reference signal transmission method provided by an embodiment of the present application. This method is executed in cooperation by a terminal and a network-side device. As Figure 8 shown, the method includes steps 801 to 803:

[0395] Step 801, the network-side device sends a downlink reference signal to the terminal through frequency hopping transmission;

[0396] Step 802, the terminal receives the downlink reference signal sent by the network-side device through frequency hopping transmission; the terminal processes the downlink reference signals of multiple hops in the frequency hopping transmission to obtain a jointly processed channel state information measurement result and / or a non-jointly processed channel state information measurement result;

[0397] Step 803, the terminal reports a channel state information report to the network-side device, and the channel state information report includes the jointly processed channel state information measurement result and / or the non-jointly processed channel state information measurement result; the network-side device receives the channel state information report reported by the terminal.

[0398] In the embodiment of the present application, the network-side device sends a downlink reference signal to the terminal through frequency hopping transmission, and the terminal receives the downlink reference signal sent by the network-side device through frequency hopping transmission, processes the downlink reference signals of multiple hops in the frequency hopping transmission to obtain a jointly processed channel state information measurement result and / or a non-jointly processed channel state information measurement result, and then reports a channel state information report to the network-side device. The channel state information report includes the jointly processed channel state information measurement result and / or the non-jointly processed channel state information measurement result, so that the terminal can process downlink reference signals with a large bandwidth and the overhead of the channel state information report is small.

[0399] For the downlink reference signal transmission method provided by the embodiment of the present application, the execution entity may be a downlink reference signal transmission device. In the embodiment of the present application, taking the downlink reference signal transmission device executing the downlink reference signal transmission method as an example, the downlink reference signal transmission device provided by the embodiment of the present application is described.

[0400] Figure 9 FIG. 4 is one of the schematic structural diagrams of the downlink reference signal transmission device provided by the embodiment of the present application. As Figure 9 shown, the downlink reference signal transmission device 900 is applied to a terminal. The downlink reference signal transmission device 900 includes: a first receiving module 901, a processing module 902, and a reporting module 903, where:

[0401] The first receiving module 901 is configured to receive the downlink reference signal sent by the network-side device through frequency hopping transmission;

[0402] A processing module 902, configured to process downlink reference signals of multiple hops in the frequency hopping transmission to obtain a jointly processed channel state information measurement result and / or a non-jointly processed channel state information measurement result;

[0403] A reporting module 903, configured to report a channel state information report to the network-side device, where the channel state information report includes the jointly processed channel state information measurement result and / or the non-jointly processed channel state information measurement result.

[0404] In an embodiment of the present application, by receiving downlink reference signals sent by a network-side device through frequency hopping transmission, processing downlink reference signals of multiple hops in the frequency hopping transmission to obtain a jointly processed channel state information measurement result and / or a non-jointly processed channel state information measurement result, and then reporting a channel state information report to the network-side device, where the channel state information report includes the jointly processed channel state information measurement result and / or the non-jointly processed channel state information measurement result, so that a terminal can process downlink reference signals with a large bandwidth and the overhead of the channel state information report is small.

[0405] Optionally, multiple hops in the frequency hopping transmission are defined within the same downlink reference signal resource.

[0406] Optionally, the hop pattern of the frequency hopping transmission is determined based on at least one of the following hop parameters:

[0407] Frequency hopping frequency domain related parameters, including at least one of the number of hops, hop bandwidth, overlapping bandwidth between adjacent hops in the frequency domain, starting physical resource block (PRB) of the hop, and total bandwidth of the hop;

[0408] Frequency hopping time domain related parameters, including at least one of the starting time slot offset of the hop, starting symbol of the downlink reference signal within the hop, and period of the hop, or including at least one of at least one starting time slot offset of the downlink reference signal resource, N starting symbols of the downlink reference signal resource, and the number of starting symbols occupied by one hop; N is a positive integer;

[0409] Time-frequency mapping related parameters, including at least one of the hop time domain index, hop frequency domain index, and hop direction factor.

[0410] Optionally, the starting PRB of the hop is determined based on at least one of the following:

[0411] The starting PRB of each hop is configured separately;

[0412] The starting PRB of each hop is determined based on the starting PRB of the first hop in the configured time domain and / or the hop with the lowest frequency domain position, the hop bandwidth, and the overlapping bandwidth between adjacent hops in the frequency domain.

[0413] Optionally, the frequency hopping transmission satisfies at least one of the following:

[0414] The boundaries of the hop with the lowest and / or highest frequency domain position in the frequency hopping transmission are aligned with the boundaries of a specific frequency domain range, where the specific frequency domain range includes at least one of the active part bandwidth (active BWP), virtual BWP, carrier, and the boundary of the total hop bandwidth;

[0415] The boundary of each hop in the frequency hopping transmission is aligned with the subband boundary;

[0416] Among the hop parameters of different downlink reference signal resources within a resource group, other hop parameters are the same except for the hop time domain position;

[0417] The terminal does not expect the interval between adjacent hops in the time domain to exceed a first switching time; the first switching time is determined by at least one of network indication, protocol convention, and terminal capability;

[0418] The terminal does not expect the downlink reference signal within a hop to cross the time slot boundary;

[0419] The terminal does not expect the hop bandwidth to exceed the maximum bandwidth supported by the terminal;

[0420] The same port on different hops uses the same sequence during sequence mapping;

[0421] Each hop in the frequency hopping transmission maps all downlink reference signal ports.

[0422] Optionally, the alignment of the boundaries of the hop with the lowest and / or highest frequency domain position in the frequency hopping transmission includes at least one of the following:

[0423] If the frequency domain position of the hop with the lowest and / or highest frequency domain position exceeds the specific frequency domain range, the resources in the hop that exceed the specific frequency domain range are not used for transmitting downlink reference signals;

[0424] If the frequency domain position of the hop with the lowest and / or highest frequency domain position exceeds the specific frequency domain range, at least one of the starting PRB of the hop and the overlapping bandwidth between the hop and the adjacent hop in the frequency domain is adjusted so that the frequency domain position of the hop falls within the specific frequency domain range.

[0425] Optionally, each hop boundary in the frequency hopping transmission is aligned with a sub-band boundary, including at least one of the following:

[0426] The starting PRB of each hop is aligned with the starting PRB of the sub-band;

[0427] The ending PRB of each hop is aligned with the ending PRB of the sub-band;

[0428] The overlapping bandwidth between frequency-domain adjacent hops is an integer multiple of the sub-band;

[0429] The bandwidth of each hop is an integer multiple of the sub-band.

[0430] Optionally, at least one of the following parameters of different hops in the frequency hopping transmission is the same:

[0431] Downlink reference signal resource identifier;

[0432] Power control offset;

[0433] Scrambling code identifier;

[0434] Quasi-co-location QCL parameter;

[0435] Frequency-domain allocation parameter within a resource block RB;

[0436] Number of downlink reference signal ports included in a hop;

[0437] Port index included in a hop;

[0438] Code division multiplexing CDM type;

[0439] CDM group size;

[0440] CDM group index;

[0441] Frequency-domain density.

[0442] Optionally, the first parameter in the hop parameters is carried by at least one of the following messages: Media Access Control MAC control element CE and Downlink Control Information DCI;

[0443] The second parameter in the hop parameters is configured by high-layer signaling and / or protocol convention.

[0444] Optionally, during the process of the terminal receiving the downlink reference signal sent by the network-side device through frequency hopping transmission, the terminal satisfies any one of the following:

[0445] The terminal ignores or does not receive hops outside the active BWP range;

[0446] The terminal receives hops outside the active BWP range.

[0447] Optionally, the first receiving module 901 is configured to receive a hop outside the active BWP range when a target condition is satisfied, where the target condition includes at least one of the following:

[0448] A network configuration enabling condition for enabling the terminal to allow receiving a hop outside the active BWP range;

[0449] A hop of a network configured downlink reference signal;

[0450] A network configured MG;

[0451] A network configured virtual BWP.

[0452] Optionally, the first receiving module 901 is configured to perform at least one of the following:

[0453] The terminal ignores the limitation of the frequency domain range of the hop of the downlink reference signal by the active BWP;

[0454] The terminal receives the hop in the frequency hopping transmission during a measurement gap MG;

[0455] The terminal receives the hop in the frequency hopping transmission within the virtual BWP.

[0456] Optionally, the virtual BWP satisfies at least one of the following:

[0457] The bandwidth of the virtual BWP is greater than the maximum bandwidth supported by the terminal;

[0458] The bandwidth received or processed by the terminal in the virtual BWP at the same time does not exceed the maximum bandwidth supported by the terminal;

[0459] The bandwidth of the virtual BWP does not exceed the total bandwidth of the hops jointly processed by the terminal;

[0460] The bandwidth of the virtual BWP does not exceed the carrier bandwidth;

[0461] The bandwidth range of the virtual BWP includes the total bandwidth of the hops;

[0462] The terminal only processes downlink reference signals on the virtual BWP;

[0463] The parameter set of the virtual BWP is the same as that of the downlink reference signal;

[0464] The frequency domain position reference point of the virtual BWP is the starting point of the carrier or reference point A.

[0465] Optionally, when the terminal receives a hop outside the active BWP range or the network configures a virtual BWP, the terminal satisfies at least one of the following:

[0466] The terminal ignores the BWP ID included in the downlink reference signal configuration;

[0467] The terminal does not expect the BWP ID to be included in the downlink reference signal configuration;

[0468] The BWP ID included in the downlink reference signal configuration received by the terminal is used to indicate the virtual BWP.

[0469] Optionally, the processing module 902 is configured to:

[0470] After measuring all hops in the frequency hopping transmission, switch to the active BWP;

[0471] When the interval between two temporally adjacent hops is greater than a second switching time, switch to the active BWP between the two temporally adjacent hops.

[0472] Optionally, the channel state information report includes at least one of the following:

[0473] A first measurement result, where the first measurement result includes: the channel state information measurement results of each of the X hops in the frequency hopping transmission or the channel state information measurement results of all hops in the frequency hopping transmission; X is a positive integer;

[0474] A first indication information, where the first indication information is used to indicate that the first measurement result is the channel state information measurement result of a single hop;

[0475] A first frequency hopping information, where the first frequency hopping information is used to indicate the hop information associated with the first measurement result;

[0476] A second measurement result, where the second measurement result includes: the channel state information measurement results jointly processed by Y hops in the frequency hopping transmission or the channel state information measurement results jointly processed by all hops in the frequency hopping transmission; Y is a positive integer;

[0477] A second indication information, where the second indication information is used to indicate that the second measurement result is the channel state information measurement result jointly processed by multiple hops;

[0478] A second frequency hopping information, where the second frequency hopping information is used to indicate the hop information associated with the second measurement result.

[0479] Optionally, the reporting module 903 is specifically configured to, when at least one port of one or more target hops in the frequency hopping transmission is discarded, the terminal reports the channel state information report to the network-side device based on a target manner, where the target manner includes at least one of the following:

[0480] Ignore the measurement and / or reporting of the current channel state information;

[0481] Ignore the measurement and / or reporting of all ports of the target hop;

[0482] Consider the measurement and / or reporting of the ports of the target hop that are not discarded.

[0483] Optionally, the channel state information report includes at least one of the following:

[0484] The broadband channel state information measurement result obtained based on multiple hops with complete ports in the frequency hopping transmission;

[0485] The sub-band channel state information measurement result obtained based on multiple hops with complete ports in the frequency hopping transmission;

[0486] The sub-band channel state information measurement result obtained based on hops with at least some ports discarded in the frequency hopping transmission;

[0487] The broadband channel state information measurement result obtained based on the complete ports in all hops of the frequency hopping transmission;

[0488] The sub-band channel state information measurement result obtained based on the complete ports in all hops of the frequency hopping transmission.

[0489] Optionally, the first receiving module 901 is further configured to receive the reporting indication information sent by the network-side device, where the reporting indication information is used to instruct the terminal to perform joint processing on the downlink reference signals of multiple hops.

[0490] Optionally, the processing module 902 is configured to perform downlink reference signal measurement according to at least one set of sub-band configurations;

[0491] The reporting module 903 is configured to report the channel state information measurement result, where the sub-band configuration includes at least one of the start point of the sub-band, the end point of the sub-band, the bitmap of the sub-band, and the size of the sub-band.

[0492] Optionally, at least one of the start point of the sub-band, the end point of the sub-band, and the bitmap of the sub-band in the sub-band configuration is determined according to a target frequency domain range, where the target frequency domain range includes at least one of active BWP, virtual BWP, carrier, the entire hop frequency domain range, and the hop frequency domain range.

[0493] Optionally, the size of the subbands in the subband configuration is mapped according to the target bandwidth; alternatively, the size of the subbands in the subband configuration is indicated by the network-side device from at least one candidate value, and the at least one candidate value is mapped according to the target bandwidth;

[0494] wherein, the target bandwidth includes at least one of the bandwidth consistent with the target frequency domain range, the hop bandwidth, the hop bandwidth with the smallest bandwidth, the hop bandwidth with the largest bandwidth, and the bandwidth indicated by the network-side device.

[0495] Optionally, the subband configuration satisfies: when there is no overlapping bandwidth between adjacent hops in the frequency domain, the terminal does not expect a subband to contain multiple hops.

[0496] Optionally, each hop is associated with a set of subband configurations, or multiple hops are associated with the same subband configuration.

[0497] Optionally, the measurement result of the channel state information for joint processing includes: the measurement result of the subband channel state information (subband CSI) for joint processing, wherein the subband CSI measurement result is the result of frequency domain compression after compensating for the phase offset between multiple hops in the frequency hopping transmission.

[0498] Optionally, the subband CSI measurement result includes at least one of the following:

[0499] N1 sets of channel state information measurement results, where the N1 sets of channel state information measurement results include the channel state information measurement results of the N1 hops included in the subband; N1 is a positive integer;

[0500] A set of channel state information measurement results, where the set of channel state information measurement results is based on joint processing of the N1 hops included in the subband;

[0501] The third frequency hopping information, which is used to indicate the hop information associated with the measurement result of the channel state information of the subband.

[0502] Optionally, the reporting module 903 is further configured to report terminal capability information to the network-side device, where the terminal capability information includes at least one of the following:

[0503] The maximum broadband channel state information processing bandwidth that the terminal processes at the same moment;

[0504] The total hop bandwidth;

[0505] Whether it supports processing downlink reference signals outside the active BWP;

[0506] Whether downlink reference signal frequency hopping is supported;

[0507] Whether downlink reference signal cross-slot frequency hopping is supported;

[0508] Maximum number of hops;

[0509] Maximum overlapping bandwidth;

[0510] Maximum bandwidth per hop;

[0511] Switching time between adjacent hops.

[0512] The downlink reference signal transmission device in the embodiments of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal or other devices other than the terminal. Exemplarily, the terminal may include, but is not limited to, the types of the terminal 11 listed above, and other devices may be a server, a Network Attached Storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0513] The downlink reference signal transmission device provided in the embodiments of the present application can implement Figures 2 to 6 each process implemented by the method embodiments and achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0514] Figure 10 is the second structural schematic diagram of the downlink reference signal transmission device provided in the embodiments of the present application. As Figure 10 shown, the downlink reference signal transmission device 1000 is applied to a network-side device. The downlink reference signal transmission device 1000 includes: a sending module 1001 and a second receiving module 1002, where:

[0515] The sending module 1001 is configured to send a downlink reference signal to a terminal through frequency hopping transmission;

[0516] The second receiving module 1002 is configured to receive a channel state information report reported by the terminal. The channel state information report includes a jointly processed channel state information measurement result and / or a non-jointly processed channel state information measurement result obtained by the terminal after processing the downlink reference signals of multiple hops in the frequency hopping transmission.

[0517] In an embodiment of the present application, a downlink reference signal is sent to a terminal through frequency hopping transmission. The terminal receives the downlink reference signal sent through frequency hopping transmission, processes the downlink reference signals of multiple hops in the frequency hopping transmission to obtain a jointly processed channel state information measurement result and / or a non-jointly processed channel state information measurement result, and then reports a channel state information report to a network-side device. The channel state information report includes the jointly processed channel state information measurement result and / or the non-jointly processed channel state information measurement result, so that the terminal can process downlink reference signals with a large bandwidth and the overhead of the channel state information report is small.

[0518] Optionally, multiple hops in the frequency hopping transmission are defined within the same downlink reference signal resource.

[0519] Optionally, the hop pattern of the frequency hopping transmission is determined based on at least one of the following hop parameters:

[0520] Frequency hopping frequency domain related parameters, including at least one of the number of hops, hop bandwidth, overlapping bandwidth between adjacent hops in the frequency domain, starting physical resource block PRB of the hop, and total hop bandwidth;

[0521] Frequency hopping time domain related parameters, including at least one of the starting time slot offset of the hop, starting symbol of the downlink reference signal within the hop, and period of the hop, or including at least one of at least one starting time slot offset of the downlink reference signal resource, N starting symbols of the downlink reference signal resource, and the number of starting symbols occupied by one hop; N is a positive integer;

[0522] Time-frequency mapping related parameters, including at least one of the hop time domain index, hop frequency domain index, and hop direction factor.

[0523] Optionally, the starting PRB of the hop is determined based on at least one of the following:

[0524] The starting PRB of each hop is configured separately;

[0525] The starting PRB of each hop is determined according to the starting PRB, hop bandwidth, and overlapping bandwidth between adjacent hops in the frequency domain of the first hop in the configured time domain and / or the hop with the lowest frequency domain position.

[0526] Optionally, the frequency hopping transmission satisfies at least one of the following:

[0527] The boundaries of the hop with the lowest and / or highest frequency domain position in the frequency hopping transmission are aligned with the boundaries of a specific frequency domain range, and the specific frequency domain range includes at least one of an active bandwidth part active BWP, virtual BWP, carrier, and total hop bandwidth boundary;

[0528] Each hop boundary in the frequency hopping transmission is aligned with the subband boundary;

[0529] Among the hop parameters of different downlink reference signal resources within a resource group, other hop parameters are the same except for the hop time domain position;

[0530] The terminal does not expect the interval between temporally adjacent hops to exceed a first handover time; the first handover time is determined by at least one of network indication, protocol convention, or terminal capability;

[0531] The terminal does not expect the downlink reference signal within a hop to cross the time slot boundary;

[0532] The terminal does not expect the hop bandwidth to exceed the maximum bandwidth supported by the terminal;

[0533] The same port on different hops uses the same sequence during sequence mapping;

[0534] Each hop in the frequency hopping transmission maps all downlink reference signal ports.

[0535] Optionally, the hop boundary with the lowest and / or highest frequency domain position in the frequency hopping transmission is aligned with the boundary of a specific frequency domain range, including at least one of the following:

[0536] If the frequency domain position of the hop with the lowest and / or highest frequency domain position exceeds the specific frequency domain range, the resources in the hop that exceed the specific frequency domain range are not used for transmitting downlink reference signals;

[0537] If the frequency domain position of the hop with the lowest and / or highest frequency domain position exceeds the specific frequency domain range, at least one of the starting PRB of the hop and the overlapping bandwidth between the hop and the frequency adjacent hop is adjusted so that the frequency domain position of the hop falls within the specific frequency domain range.

[0538] Optionally, each hop boundary in the frequency hopping transmission is aligned with the subband boundary, including at least one of the following:

[0539] The starting PRB of each hop is aligned with the starting PRB of the subband;

[0540] The ending PRB of each hop is aligned with the ending PRB of the subband;

[0541] The overlapping bandwidth between frequency adjacent hops is an integer multiple of the subband;

[0542] The bandwidth of each hop is an integer multiple of the subband.

[0543] Optionally, at least one of the following parameters of different hops in the frequency hopping transmission is the same:

[0544] Downlink reference signal resource identifier;

[0545] Power control offset;

[0546] Scrambling code identifier;

[0547] Quasi co-location QCL parameter;

[0548] Frequency domain allocation parameter within a resource block RB;

[0549] Number of downlink reference signal ports included in a hop;

[0550] Port index included in a hop;

[0551] Code division multiplexing CDM type;

[0552] CDM group size;

[0553] CDM group index;

[0554] Frequency domain density.

[0555] Optionally, the first parameter among the hop parameters is carried by at least one of the following messages: Media Access Control MAC control element CE and Downlink Control Information DCI;

[0556] The second parameter among the hop parameters is configured by higher layer signaling and / or protocol convention.

[0557] Optionally, the channel state information report includes at least one of the following:

[0558] A first measurement result, where the first measurement result includes: channel state information measurement results of each of X hops in the frequency hopping transmission or channel state information measurement results of all hops in the frequency hopping transmission; X is a positive integer;

[0559] A first indication information, where the first indication information is used to indicate that the first measurement result is a channel state information measurement result of a single hop;

[0560] A first frequency hopping information, where the first frequency hopping information is used to indicate hop information associated with the first measurement result;

[0561] A second measurement result, where the second measurement result includes: channel state information measurement results jointly processed by Y hops in the frequency hopping transmission or channel state information measurement results jointly processed by all hops in the frequency hopping transmission; Y is a positive integer;

[0562] The second indication information, which is used to indicate that the second measurement result is a channel state information measurement result of multi-hop joint processing;

[0563] The second frequency hopping information, which is used to indicate the hop information associated with the second measurement result.

[0564] Optionally, the channel state information report includes at least one of the following:

[0565] The wideband channel state information measurement result obtained based on multiple hops with complete ports in the frequency hopping transmission;

[0566] The subband channel state information measurement result obtained based on multiple hops with complete ports in the frequency hopping transmission;

[0567] The subband channel state information measurement result obtained based on hops in which at least some ports are discarded in the frequency hopping transmission;

[0568] The wideband channel state information measurement result obtained based on the complete ports in all hops of the frequency hopping transmission;

[0569] The subband channel state information measurement result obtained based on the complete ports in all hops of the frequency hopping transmission.

[0570] Optionally, the sending module 1001 is further configured to send a reporting indication information to the terminal, and the reporting indication information is used to indicate that the terminal performs joint processing on the downlink reference signals of multiple hops.

[0571] Optionally, the channel state information measurement result of the joint processing includes: the subband channel state information subband CSI measurement result of the joint processing, where the subband CSI measurement result is the result of frequency domain compression after compensating for the phase offset between hops in the frequency hopping transmission.

[0572] Optionally, the subband CSI measurement result includes at least one of the following:

[0573] N1 groups of channel state information measurement results, where the N1 groups of channel state information measurement results include the channel state information measurement results of each of the N1 hops included in the subband; N1 is a positive integer;

[0574] A group of channel state information measurement results, which are obtained by performing joint processing based on the N1 hops included in the subband;

[0575] The third frequency hopping information, which is used to indicate the hop information associated with the channel state information measurement result of the subband.

[0576] Optionally, the second receiving module 1002 is further configured to receive the terminal capability information reported by the terminal, where the terminal capability information includes at least one of the following:

[0577] The maximum broadband channel state information processing bandwidth processed by the terminal at the same moment;

[0578] The total hop bandwidth;

[0579] Whether it supports processing downlink reference signals outside the active BWP;

[0580] Whether it supports downlink reference signal hopping;

[0581] Whether it supports downlink reference signal cross-slot hopping;

[0582] The maximum number of hops;

[0583] The maximum overlapping bandwidth;

[0584] The maximum bandwidth of each hop;

[0585] The switching time between adjacent hops.

[0586] The downlink reference signal transmission device 1000 in the embodiments of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a network-side device or other devices other than network-side devices. Exemplarily, the network-side device may include, but is not limited to, the types of the network-side devices 12 listed above, and the embodiments of the present application do not make specific limitations.

[0587] The downlink reference signal transmission device 1000 provided in the embodiments of the present application can implement Figure 7 each process implemented by the method embodiments and achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0588] The embodiments of the present application further provide a communication device, Figure 11 which is a schematic structural diagram of the communication device provided in the embodiments of the present application. As Figure 11 shown, the communication device 1100 includes a processor 1101 and a memory 1102. A program or instruction that can run on the processor 1101 is stored on the memory 1102. For example, when the communication device 1100 is a terminal, when the program or instruction is executed by the processor 1101, it implements the above-mentioned Figure 2 each step of the downlink reference signal transmission method embodiment shown, and can achieve the same technical effects. When the communication device 1100 is a network-side device, when the program or instruction is executed by the processor 1101, it implements the above-mentioned Figure 7Each step of the embodiment of the downlink reference signal transmission method shown above can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0589] An embodiment of the present application further provides a terminal, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is configured to run programs or instructions to implement the steps in the method embodiment as shown in Figure 2 the method embodiment shown above. This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment. Each implementation process and implementation manner of the above method embodiment can be applied to this terminal embodiment, and the same technical effect can be achieved.

[0590] An embodiment of the present application further provides a terminal, Figure 12 which is a schematic hardware structure diagram of the terminal provided by the embodiment of the present application. As shown in Figure 12 Figure 12, the terminal 1200 includes but is not limited to at least some components such as a radio frequency unit 1201, a network module 1202, an audio output unit 1203, an input unit 1204, a sensor 1205, a display unit 1206, a user input unit 1207, an interface unit 1208, a memory 1209, and a processor 1210.

[0591] Those skilled in the art can understand that the terminal 1200 may further include a power supply (such as a battery) for supplying power to each component. The power supply can be logically connected to the processor 1210 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 12 The terminal structure shown in Figure 12 does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine some components, or have different component arrangements, which will not be elaborated here.

[0592] It should be understood that in the embodiment of the present application, the input unit 1204 may include a graphics processing unit (GPU) 12041 and a microphone 12042. The graphics processing unit 12041 processes the image data of static pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1206 may include a display panel 12061, and the display panel 12061 may be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 1207 includes at least one of a touch panel 12071 and other input devices 12072. The touch panel 12071 is also called a touch screen. The touch panel 12071 may include two parts: a touch detection device and a touch controller. The other input devices 12072 may include but are not limited to a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be elaborated here.

[0593] In the embodiment of the present application, after the radio frequency unit 1201 receives downlink data from the network side device, it can be transmitted to the processor 1210 for processing; in addition, the radio frequency unit 1201 can send uplink data to the network side device. Generally, the radio frequency unit 1201 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0594] The memory 1209 can be used to store software programs or instructions and various data. The memory 1209 mainly includes a first storage area for storing programs or instructions and a second storage area for storing data. Among them, the first storage area can store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1209 can include a volatile memory or a non-volatile memory. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable ROM (PROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), a static RAM (SRAM), a dynamic RAM (DRAM), a synchronous DRAM (SDRAM), a double data rate SDRAM (DDR SDRAM), an enhanced SDRAM (ESDRAM), a synch link DRAM (SLDRAM), and a direct rambus RAM (DRRAM). The memory 1209 in the embodiment of the present application includes, but is not limited to, these and any other suitable types of memories.

[0595] The processor 1210 can include one or more processing units; optionally, the processor 1210 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above modem processor may not be integrated into the processor 1210.

[0596] Among them, the radio frequency unit 1201 is used to receive the downlink reference signal sent by the network-side device through frequency hopping transmission;

[0597] The processor 1210 is used to process the downlink reference signals of multiple hops in the frequency hopping transmission to obtain the measurement result of the channel state information obtained by joint processing and / or the measurement result of the channel state information obtained by non-joint processing;

[0598] The radio frequency unit 1201 is further used to report a channel state information report to the network-side device, and the channel state information report includes the measurement result of the channel state information obtained by joint processing and / or the measurement result of the channel state information obtained by non-joint processing.

[0599] It can be understood that the implementation processes of the implementation manners mentioned in this embodiment can refer to the relevant descriptions of the method embodiment shown in Figure 2 and achieve the same or corresponding technical effects. To avoid repetition, they will not be elaborated here.

[0600] This embodiment of the present application further provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run a program or an instruction to implement the steps of the method embodiment as shown in Figure 7 This network-side device embodiment corresponds to the above-mentioned network-side device method embodiment. Each implementation process and implementation manner of the above method embodiment can be applied to this network-side device embodiment, and the same technical effects can be achieved.

[0601] This embodiment of the present application further provides a network-side device. Figure 13 It is a schematic diagram of the hardware structure of the network-side device provided by this embodiment of the present application. As shown in Figure 13 The network-side device 1300 includes: an antenna 131, a radio frequency device 132, a baseband device 133, a processor 134, and a memory 135. The antenna 131 is connected to the radio frequency device 132. In the uplink direction, the radio frequency device 132 receives information through the antenna 131 and sends the received information to the baseband device 133 for processing. In the downlink direction, the baseband device 133 processes the information to be sent and sends it to the radio frequency device 132. After processing the received information, the radio frequency device 132 sends it out through the antenna 131.

[0602] The method executed by the network-side device in the above embodiment can be implemented in the baseband device 133, and the baseband device 133 includes a baseband processor.

[0603] The baseband device 133 may include, for example, at least one baseband board, and multiple chips are arranged on the baseband board, such as Figure 13As shown, one of the chips, for example, a baseband processor, is connected to the memory 135 through a bus interface to call the program in the memory 135 and execute the operations of the network device shown in the above method embodiments.

[0604] The network-side device may further include a network interface 136, which is, for example, a Common Public Radio Interface (CPRI).

[0605] Specifically, the network-side device 1300 in the embodiments of the present application further includes: instructions or programs stored on the memory 135 and executable on the processor 134. The processor 134 calls the instructions or programs in the memory 135 to execute Figure 7 the steps of the method embodiments shown and achieve the same technical effects. To avoid repetition, they are not described herein again.

[0606] The embodiments of the present application further provide a readable storage medium. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, each process of the above method embodiments for downlink reference signal transmission is implemented, and the same technical effects can be achieved. To avoid repetition, they are not described herein again.

[0607] Wherein, the processor is 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 disks, or optical discs, etc. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0608] The embodiments of the present application further provide a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement each process of the above method embodiments for downlink reference signal transmission, and the same technical effects can be achieved. To avoid repetition, they are not described herein again.

[0609] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip, etc.

[0610] The embodiments of the present application further provide a computer program / program product. The computer program / program product is stored in a storage medium. The computer program / program product is executed by at least one processor to implement each process of the above method embodiments for downlink reference signal transmission, and the same technical effects can be achieved. To avoid repetition, they are not described herein again.

[0611] The embodiments of the present application further provide a downlink reference signal transmission system, including: a terminal and a network-side device. The terminal can be used to execute as Figure 2The steps of the method embodiments shown, and the network-side device can be used to execute as Figure 7 the steps of the method embodiments shown.

[0612] It should be noted that in this document, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the presence of additional identical elements in the process, method, article or device including that element. In addition, it should be pointed out that the methods and devices in the embodiments of the present application are not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0613] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-described embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, they can also be implemented by hardware. This computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions for causing a terminal or a network-side device to execute the methods described in various embodiments of the present application.

[0614] The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Those of ordinary skill in the art, under the inspiration of the present application and without departing from the spirit and scope protected by the claims of the present application, can also make many forms of embodiments, and these embodiments are all within the protection scope of the present application.

Claims

1. A downlink reference signal transmission method, characterized in that, including: The terminal receives a downlink reference signal transmitted by a network-side device through frequency hopping transmission; The terminal processes the downlink reference signals of multiple hops in the frequency hopping transmission to obtain a jointly processed channel state information measurement result and / or a non-jointly processed channel state information measurement result; The terminal reports a channel state information report to the network-side device, and the channel state information report includes the jointly processed channel state information measurement result and / or the non-jointly processed channel state information measurement result.

2. The downlink reference signal transmission method according to claim 1, wherein The multiple hops in the frequency hopping transmission are defined within the same downlink reference signal resource.

3. The downlink reference signal transmission method according to claim 1 or 2, characterized in that The hop pattern of the frequency hopping transmission is determined based on at least one of the following hop parameters: Frequency hopping frequency domain related parameters, including at least one of the number of hops, hop bandwidth, overlapping bandwidth between adjacent hops in the frequency domain, starting physical resource block (PRB) of the hop, and total hop bandwidth; Frequency hopping time domain related parameters, including at least one of the starting time slot offset of the hop, starting symbol of the downlink reference signal within the hop, and period of the hop, or including at least one of at least one starting time slot offset of the downlink reference signal resource, N starting symbols of the downlink reference signal resource, and the number of starting symbols occupied by one hop; N is a positive integer; Time-frequency mapping related parameters, including at least one of the hop time domain index, hop frequency domain index, and hop direction factor.

4. The downlink reference signal transmission method according to claim 3, characterized in that The starting PRB of the hop is determined based on at least one of the following: The starting PRB of each hop is configured separately; The starting PRB of each hop is determined according to the starting PRB, hop bandwidth, and overlapping bandwidth between adjacent hops in the frequency domain of the first hop in the configured time domain and / or the hop with the lowest frequency domain position.

5. The downlink reference signal transmission method according to claim 3 or 4, characterized in that The frequency hopping transmission satisfies at least one of the following: The boundary of the hop with the lowest and / or highest frequency domain position in the frequency hopping transmission is aligned with the boundary of a specific frequency domain range, and the specific frequency domain range includes at least one of the active bandwidth part (active BWP), virtual BWP, carrier, and total hop bandwidth boundary; The boundary of each hop in the frequency hopping transmission is aligned with the subband boundary; Among the hop parameters of different downlink reference signal resources within a resource group, other hop parameters are the same except for the hop time domain position; The terminal does not expect the interval between adjacent hops in the time domain to exceed a first handover time; the first handover time is determined by at least one of network indication, protocol agreement, and terminal capability; The terminal does not expect the downlink reference signal within one hop to cross the time slot boundary; The terminal does not expect the hop bandwidth to exceed the maximum bandwidth supported by the terminal; The same port on different hops uses the same sequence during sequence mapping; Each hop in the frequency hopping transmission maps all downlink reference signal ports.

6. The downlink reference signal transmission method according to claim 5, characterized in that, The boundary of the hop with the lowest and / or highest frequency domain position in the frequency hopping transmission is aligned with the boundary of a specific frequency domain range, including at least one of the following: If the frequency-domain position of the lowest and / or highest hop exceeds the specific frequency-domain range, the resources in the hop that exceed the specific frequency-domain range are not used for transmitting downlink reference signals; If the frequency-domain position of the lowest and / or highest hop exceeds the specific frequency-domain range, at least one of the starting PRB of the hop and the overlapping bandwidth between the hop and the adjacent hop in the frequency domain is adjusted so that the frequency-domain position of the hop falls within the specific frequency-domain range.

7. The downlink reference signal transmission method according to claim 5, characterized in that Each hop boundary in the frequency hopping transmission is aligned with the sub-band boundary, including at least one of the following: The starting PRB of each hop is aligned with the starting PRB of the sub-band; The ending PRB of each hop is aligned with the ending PRB of the sub-band; The overlapping bandwidth between adjacent hops in the frequency domain is an integer multiple of the sub-band; The bandwidth of each hop is an integer multiple of the sub-band.

8. The downlink reference signal transmission method according to any one of claims 1 to 7, characterized in that, During the process of the terminal receiving the downlink reference signals transmitted by the network-side device through frequency hopping transmission, the terminal satisfies any one of the following: The terminal ignores or does not receive hops outside the active BWP range; The terminal receives hops outside the active BWP range.

9. The downlink reference signal transmission method according to claim 8, wherein The terminal receives hops outside the active BWP range, including: Under the condition that the target condition is satisfied, the terminal receives hops outside the active BWP range, where the target condition includes at least one of the following: The network configuration enabling condition for enabling the terminal to allow receiving hops outside the active BWP range; The network configures the hops of the downlink reference signals; The network configures MG; The network configures the virtual BWP.

10. The downlink reference signal transmission method according to claim 8 or 9, characterized in that, The terminal receives hops outside the active BWP range, including at least one of the following: The terminal ignores the limitation of the frequency-domain range of the hops of the downlink reference signals by the active BWP; The terminal receives the hops in the frequency hopping transmission during the measurement gap MG; The terminal receives the hops in the frequency hopping transmission within the virtual BWP.

11. The downlink reference signal transmission method according to claim 10, characterized in that, The virtual BWP satisfies at least one of the following: The bandwidth of the virtual BWP is greater than the maximum bandwidth supported by the terminal; The bandwidth received or processed by the terminal in the virtual BWP at the same moment does not exceed the maximum bandwidth supported by the terminal; The bandwidth of the virtual BWP does not exceed the total bandwidth of the hops jointly processed by the terminal; The bandwidth of the virtual BWP does not exceed the carrier bandwidth; The bandwidth range of the virtual BWP includes the total bandwidth of the hops; The terminal only processes the downlink reference signals on the virtual BWP; The parameter set of the virtual BWP is the same as that of the downlink reference signals; The frequency-domain position reference point of the virtual BWP is the starting point of the carrier or reference point A.

12. The downlink reference signal transmission method according to any one of claims 9 to 11, characterized in that, In the case where the terminal receives hops outside the active BWP range or the network configures the virtual BWP, the terminal satisfies at least one of the following: The terminal ignores the BWP ID included in the downlink reference signal configuration; The terminal does not expect the BWP ID to be included in the downlink reference signal configuration; The BWP ID included in the downlink reference signal configuration received by the terminal is used to indicate a virtual BWP.

13. The downlink reference signal transmission method according to any one of claims 1 to 12, characterized in that, The channel state information report includes at least one of the following: A first measurement result, where the first measurement result includes: the channel state information measurement results of each of the X hops in the frequency hopping transmission or the channel state information measurement results of each of all the hops in the frequency hopping transmission; X is a positive integer; A first indication information, where the first indication information is used to indicate that the first measurement result is the channel state information measurement result of a single hop; A first frequency hopping information, where the first frequency hopping information is used to indicate the hop information associated with the first measurement result; A second measurement result, where the second measurement result includes: the channel state information measurement results jointly processed by Y hops in the frequency hopping transmission or the channel state information measurement results jointly processed by all the hops in the frequency hopping transmission; Y is a positive integer; A second indication information, where the second indication information is used to indicate that the second measurement result is the channel state information measurement result of multi-hop joint processing; A second frequency hopping information, where the second frequency hopping information is used to indicate the hop information associated with the second measurement result.

14. The downlink reference signal transmission method according to any one of claims 1 to 13, characterized in that, The terminal reports a channel state information report to the network device, including: When at least one port of one or more target hops in the frequency hopping transmission is discarded, the terminal reports the channel state information report to the network device based on a target manner, where the target manner is at least one of the following: Ignore the measurement and / or reporting of the current channel state information; Ignore the measurement and / or reporting of all ports of the target hop; Consider the measurement and / or reporting of the ports of the target hop that are not discarded.

15. The downlink reference signal transmission method according to claim 14, wherein The channel state information report includes at least one of the following: The broadband channel state information measurement result obtained based on multiple hops with complete ports in the frequency hopping transmission; The sub-band channel state information measurement result obtained based on multiple hops with complete ports in the frequency hopping transmission; The sub-band channel state information measurement result obtained based on hops with at least some ports discarded in the frequency hopping transmission; The broadband channel state information measurement result obtained based on the complete ports among all the hops in the frequency hopping transmission; The sub-band channel state information measurement result obtained based on the complete ports among all the hops in the frequency hopping transmission.

16. The downlink reference signal transmission method according to any one of claims 1 to 15, characterized in that The method further includes: The terminal receives the reporting indication information sent by the network device, where the reporting indication information is used to indicate that the terminal jointly processes the downlink reference signals of multiple hops.

17. The downlink reference signal transmission method according to any one of claims 1 to 16, characterized in that, The method further includes: The terminal measures the downlink reference signal and / or reports the channel state information measurement result according to at least one set of sub-band configurations, where the set of sub-band configurations includes at least one of the starting point of the sub-band, the ending point of the sub-band, the bitmap of the sub-band, and the size of the sub-band.

18. The downlink reference signal transmission method according to claim 17, wherein The measured results of the joint processed channel state information include: the measured results of the subband channel state information (subband CSI) of the joint processing, where the measured results of the subband CSI are the results of frequency domain compression after compensating for the phase offset between multiple hops in the frequency hopping transmission.

19. The downlink reference signal transmission method according to claim 18, wherein The measured results of the subband CSI include at least one of the following: N1 groups of measured results of channel state information, where the N1 groups of measured results of channel state information include the measured results of the channel state information of each of the N1 hops included in the subband; N1 is a positive integer; One group of measured results of channel state information, where the one group of measured results of channel state information is jointly processed based on the N1 hops included in the subband; The third frequency hopping information, where the third frequency hopping information is used to indicate the hop information associated with the measured results of the channel state information of the subband.

20. The downlink reference signal transmission method according to any one of claims 1 to 19, characterized in that, The method further includes: The terminal reports terminal capability information to the network side device, where the terminal capability information includes at least one of the following: The maximum broadband channel state information processing bandwidth processed by the terminal at the same time; The total hop bandwidth; Whether it supports processing downlink reference signals outside the active BWP; Whether it supports downlink reference signal frequency hopping; Whether it supports downlink reference signal cross-slot frequency hopping; The maximum number of hops; The maximum overlapping bandwidth; The maximum bandwidth of each hop; The switching time between adjacent hops.

21. A downlink reference signal transmission method, characterized in that It includes: The network side device sends downlink reference signals to the terminal through frequency hopping transmission; The network side device receives the channel state information report reported by the terminal, where the channel state information report includes the measured results of the joint processed channel state information and / or the measured results of the non-joint processed channel state information obtained by the terminal after processing the downlink reference signals of multiple hops in the frequency hopping transmission.

22. The downlink reference signal transmission method according to claim 21, wherein The multiple hops in the frequency hopping transmission are defined within the same downlink reference signal resource.

23. The downlink reference signal transmission method according to claim 21 or 22, characterized in that, The hop pattern of the frequency hopping transmission is determined based on at least one of the following hop parameters: Frequency hopping frequency domain related parameters, including at least one of the number of hops, hop bandwidth, overlapping bandwidth between adjacent hops in the frequency domain, starting physical resource block (PRB) of the hop, and total hop bandwidth; Frequency hopping time domain related parameters, including at least one of the starting time slot offset of the hop, starting symbol of the downlink reference signal within the hop, and period of the hop, or including at least one of the starting time slot offsets of at least one downlink reference signal resource, N starting symbols of the downlink reference signal resource, and the number of starting symbols occupied by one hop; N is a positive integer; Time-frequency mapping related parameters, including at least one of the hop time domain index, hop frequency domain index, and hop direction factor.

24. The downlink reference signal transmission method according to claim 21, wherein The starting PRB of the hop is determined based on at least one of the following: The starting PRB of each hop is configured separately; The starting PRB of each hop is determined according to the starting PRB of the first hop in the configured time domain and / or the hop with the lowest frequency domain position, hop bandwidth, and overlapping bandwidth between adjacent hops in the frequency domain.

25. The downlink reference signal transmission method according to claim 23 or 24, characterized in that, The frequency hopping transmission satisfies at least one of the following: The hop boundaries with the lowest and / or highest frequency domain positions in the frequency hopping transmission are aligned with the boundaries of a specific frequency domain range, and the specific frequency domain range includes at least one of the active portion of the bandwidth (active BWP), virtual BWP, carrier, and total hop bandwidth boundary; Each hop boundary in the frequency hopping transmission is aligned with the subband boundary; Among the hop parameters of different downlink reference signal resources within a resource group, other hop parameters are the same except for the hop time domain position; The terminal does not expect the interval between time domain adjacent hops to exceed a first handover time; the first handover time is determined by at least one of network indication, protocol convention, or terminal capability; The terminal does not expect the downlink reference signal within one hop to cross the time slot boundary; The terminal does not expect the hop bandwidth to exceed the maximum bandwidth supported by the terminal; The same port on different hops uses the same sequence during sequence mapping; Each hop in the frequency hopping transmission maps all downlink reference signal ports.

26. The downlink reference signal transmission method according to any one of claims 21 to 25, characterized in that, The method further includes: The network side device sends reporting indication information to the terminal, and the reporting indication information is used to instruct the terminal to perform joint processing on the downlink reference signals of multiple hops.

27. A downlink reference signal transmission device, characterized in that, It includes: A first receiving module, configured to receive the downlink reference signal sent by the network side device through frequency hopping transmission; A processing module, configured to process the downlink reference signals of multiple hops in the frequency hopping transmission to obtain a measurement result of channel state information for joint processing and / or a measurement result of channel state information for non-joint processing; A reporting module, configured to report a channel state information report to the network side device, and the channel state information report includes the measurement result of channel state information for joint processing and / or the measurement result of channel state information for non-joint processing.

28. The downlink reference signal transmission device according to claim 27, wherein The reporting module is specifically configured to: In the case where at least one port of one or more target hops in the frequency hopping transmission is discarded, report the channel state information report to the network side device based on a target manner, where the target manner is at least one of the following: Ignore the measurement and / or reporting of the channel state information this time; Ignore the measurement and / or reporting of all ports of the target hop; Consider the measurement and / or reporting of the ports of the target hop that are not discarded.

29. The downlink reference signal transmission device according to claim 27 or 28, characterized in that The first receiving module is further configured to: Receive the reporting indication information sent by the network side device, and the reporting indication information is used to instruct the terminal to perform joint processing on the downlink reference signals of multiple hops.

30. The downlink reference signal transmission device according to any one of claims 27 to 29, characterized in that, The processing module is further configured to: Perform downlink reference signal measurement according to at least one set of subband configurations; where the set of subband configurations includes at least one of the start point of the subband, the end point of the subband, the bitmap of the subband, and the size of the subband.

31. The downlink reference signal transmission device according to any one of claims 27 to 30, characterized in that, The reporting module is further configured to: Report terminal capability information to the network side device, where the terminal capability information includes at least one of the following: The maximum broadband channel state information processing bandwidth processed by the terminal at the same time; Total hop bandwidth; Whether it supports processing downlink reference signals outside the active BWP; Whether downlink reference signal hopping is supported; Whether downlink reference signal hopping across time slots is supported; Maximum hop count; Maximum overlapping bandwidth; Maximum bandwidth per hop; Switching time between adjacent hops.

32. A downlink reference signal transmission device, characterized in that Includes: A transmitting module, configured to transmit a downlink reference signal to a terminal by means of frequency hopping transmission; A second receiving module, configured to receive a channel state information report reported by the terminal, where the channel state information report includes a jointly processed channel state information measurement result and / or a non-jointly processed channel state information measurement result obtained by the terminal after processing the downlink reference signals of multiple hops in the frequency hopping transmission.

33. The downlink reference signal transmission device according to claim 32, wherein The transmitting module is further configured to: Transmit a reporting indication information to the terminal, where the reporting indication information is used to indicate that the terminal performs joint processing on the downlink reference signals of multiple hops.

34. A terminal, characterized in that, Includes a processor and a memory, where the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the downlink reference signal transmission method according to any one of claims 1 to 20 are implemented.

35. A network-side device, characterized in that, Includes a processor and a memory, where the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the downlink reference signal transmission method according to any one of claims 21 to 26 are implemented.

36. A readable storage medium, characterized in that, The program or instruction is stored on the readable storage medium, and when the program or instruction is executed by the processor, the downlink reference signal transmission method according to any one of claims 1 to 20 is implemented, or the steps of the downlink reference signal transmission method according to any one of claims 21 to 26 are implemented.

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