Channel scrambling method and terminal device

Abstract

The embodiment of the present application provides a channel scrambling method and a terminal device, which can ensure that the channels transmitted between the terminal device and different cells use different scrambling sequences, reduce the mutual interference between these channels, and improve the performance of multi-cell collaborative transmission. The channel scrambling method includes: the terminal device determines the initialization value of the scrambling sequence of the first channel according to the cell identifier carried by the first SSB, wherein the first SSB is used to obtain the transmit beam or receive beam of the first channel; the terminal device generates the scrambling sequence of the first channel according to the initialization value of the scrambling sequence.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of communications, and more specifically, to a channel scrambling method and a terminal device. Background Art

[0002] In the New Radio (NR) system, for uplink and downlink non-coherent transmission, when the high layer does not configure a special scrambling identity (ID) or the channel comes from a public search space, the terminal device will generate a scrambling sequence for the channel based on the cell ID of the current serving cell. For uplink and downlink non-coherent transmission, the multiple collaborative transmission / reception points (TRP) can be different physical cells, that is, the user's channels may come from different cells, but at this time, the scrambling sequence generation of these channels will still only use the same cell ID of the serving cell. In this case, the scrambling sequences of the channels transmitted between different cells and the same user are exactly the same, which will cause serious mutual interference, thereby affecting the performance of multi-cell collaborative transmission. Summary of the invention

[0003] An embodiment of the present application provides a channel scrambling method and a terminal device. When the high layer does not configure a dedicated scrambling ID or the channel comes from a public search space, the terminal device can determine the cell ID of the cell that sends or receives the current channel based on the SSB used to obtain the transmitting beam or receiving beam of the channel, which is used to generate a scrambling sequence for the corresponding channel, thereby ensuring that channels transmitted between the terminal device and different cells use different scrambling sequences, reducing mutual interference between these channels and improving the performance of multi-cell collaborative transmission.

[0004] In a first aspect, a channel scrambling method is provided, the method comprising:

[0005] The terminal device determines an initialization value of a scrambling sequence of a first channel according to a cell identifier carried by a first SSB, wherein the first SSB is used to obtain a transmit beam or a receive beam of the first channel;

[0006] The terminal device generates a scrambling sequence for the first channel according to the initialization value of the scrambling sequence.

[0007] In a second aspect, a terminal device is provided for executing the method in the first aspect.

[0008] Specifically, the terminal device includes a functional module for executing the method in the above-mentioned first aspect.

[0009] In a third aspect, a terminal device is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect.

[0010] In a fourth aspect, a device is provided for implementing the method in the first aspect.

[0011] Specifically, the apparatus includes: a processor, configured to call and run a computer program from a memory, so that a device equipped with the apparatus executes the method in the first aspect described above.

[0012] In a fifth aspect, a computer-readable storage medium is provided for storing a computer program, wherein the computer program enables a computer to execute the method in the first aspect.

[0013] In a sixth aspect, a computer program product is provided, comprising computer program instructions, wherein the computer program instructions enable a computer to execute the method in the first aspect.

[0014] In a seventh aspect, a computer program is provided, which, when executed on a computer, enables the computer to execute the method in the first aspect.

[0015] Through the above technical solution, when the high layer does not configure a dedicated scrambling ID or the channel comes from a public search space, the terminal device can determine the cell ID of the cell that sends or receives the current channel based on the SSB used to obtain the transmitting beam or receiving beam of the channel, which is used to generate the scrambling sequence of the corresponding channel, thereby ensuring that the channels transmitted between the terminal device and different cells use different scrambling sequences, reducing mutual interference between these channels and improving the performance of multi-cell collaborative transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of a communication system architecture applied in an embodiment of the present application.

[0017] Figure 2 It is a schematic diagram of a downlink non-coherent transmission provided by the present application.

[0018] Figure 3 It is a schematic diagram of an uplink non-coherent transmission provided by the present application.

[0019] Figure 4 This is a schematic diagram of the TCI state configuration of a PDSCH provided in this application.

[0020] Figure 5 It is a schematic flowchart of a channel scrambling method provided according to an embodiment of the present application.

[0021] Figure 6 It is a schematic block diagram of a terminal device provided according to an embodiment of the present application.

[0022] Figure 7 It is a schematic block diagram of a communication device provided according to an embodiment of the present application.

[0023] Figure 8 It is a schematic block diagram of a device provided according to an embodiment of the present application.

[0024] Fig. 9 It is a schematic block diagram of a communication system provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. For the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

[0027] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device to device (Device to Device, D2D) communication, machine to machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), vehicle to vehicle (V2V) communication, or vehicle to everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0028] Optionally, the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) networking scenario.

[0029] Optionally, the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, wherein the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, wherein the authorized spectrum can also be considered as an unshared spectrum.

[0030] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0031] The terminal device can be a station (STAION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0032] In the embodiments of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (for example, on airplanes, balloons and satellites, etc.).

[0033] In the embodiment of the present application, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0034] As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and fully or partially independent of smartphones, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

[0035] In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (EvolutionalNode B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device or base station (gNB) in an NR network, or a network device in a future evolved PLMN network, or a network device in an NTN network, etc.

[0036] As an example but not limitation, in an embodiment of the present application, the network device may have a mobile characteristic, for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station set up in a location such as land or water.

[0037] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0038] For example, the communication system 100 used in the embodiment of the present application is as follows: Figure 1 The communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographical area and may communicate with terminal devices located in the coverage area.

[0039] Figure 1 One network device and two terminal devices are shown exemplarily. Optionally, the communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0040] Optionally, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

[0041] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be referred to as a communication device. Figure 1Taking the communication system 100 shown as an example, the communication equipment may include a network device 110 and a terminal device 120 with communication functions. The network device 110 and the terminal device 120 may be the specific devices described above and will not be repeated here. The communication equipment may also include other devices in the communication system 100, such as a network controller, a mobile management entity and other network entities, which is not limited in the embodiments of the present application.

[0042] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0043] It should be understood that the "indication" mentioned in the embodiments of the present application can be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association relationship between A and B.

[0044] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between two items, or an association relationship between the two items, or a relationship between indication and being indicated, configuration and being configured, and the like.

[0045] The NR system introduces non-coherent transmission based on multiple TRPs for downlink and uplink. The backhaul connection between TRPs can be ideal or non-ideal. In an ideal backhaul, TRPs can exchange information quickly and dynamically. In a non-ideal backhaul, TRPs can only exchange information quasi-statically due to the large delay. In downlink non-coherent transmission, multiple TRPs can use different control channels to independently schedule multiple physical downlink shared channels (PDSCH) of a terminal, or use the same control channel to schedule the transmission of different TRPs, where the data of different TRPs use different transmission layers. The latter can only be used in the case of ideal backhaul.

[0046] For downlink transmissions scheduled by multiple physical downlink control channels (PDCCH), the scheduled PDSCHs can be transmitted in the same time slot or in different time slots. The terminal needs to support simultaneous reception of PDCCH and PDSCH from different TRPs. When the terminal feeds back an Acknowledgement (ACK) / Negative Acknowledgement (NACK) and Channel State Information (CSI), the ACK / NACK and CSI can be fed back to different TRPs (such as Figure 2 A in the above), or they can be combined and reported to a TRP (such as Figure 2 B). Figure 2 A in the figure can be applied to both ideal backhaul and non-ideal backhaul scenarios. Figure 2 B can only be used in ideal backhaul scenarios.

[0047] In uplink non-coherent transmission, different TRPs can also independently schedule the physical uplink shared channel (PUSCH) transmission of the same terminal. Different PUSCH transmissions can be configured with independent transmission parameters, such as beam, precoding matrix, number of layers, etc. The scheduled PUSCH transmission can be transmitted in the same time slot or in different time slots. If the terminal is scheduled for two PUSCH transmissions at the same time slot, it needs to determine how to transmit based on its own capabilities. If the terminal is configured with multiple antenna panels (panels) and supports simultaneous transmission of PUSCH on multiple panels, the two PUSCHs can be transmitted simultaneously, and the PUSCHs transmitted on different panels are aligned with the corresponding TRPs for analog shaping, thereby distinguishing different PUSCHs through the spatial domain and providing uplink spectrum efficiency, such as Figure 3 As shown. If the terminal has only a single panel, or does not support simultaneous transmission of multiple panels, PUSCH can only be transmitted on one panel. Similar to the downlink, PUSCH transmitted by different TRPs can be scheduled based on multiple downlink control information (Downlink Control Information, DCI), which can be carried by different control resource sets (Control Resource Set, CORESET).

[0048] In the NR system, the network device can configure a corresponding transmission configuration indicator (TCI) state for each downlink signal or downlink channel to indicate a quasi-co-located (QCL) reference signal corresponding to the target downlink signal or target downlink channel, so that the terminal receives the target downlink signal or target downlink channel based on the reference signal.

[0049] Among them, a TCI state can include the following configurations:

[0050] TCI state ID, used to identify a TCI state;

[0051] QCL information 1;

[0052] QCL Information2.

[0053] Among them, a QCL information contains the following information:

[0054] QCL type configuration, which can be one of QCL type A, QCL type B, QCL type C, QCL type D;

[0055] The QCL reference signal configuration includes the cell ID where the reference signal is located, the BWP ID, and the identifier of the reference signal (which may be a CSI-RS resource ID or an SSB index).

[0056] Among them, the QCL type of at least one of QCL information 1 and QCL information 2 must be one of typeA, typeB, and typeC, and the QCL type of the other QCL information (if configured) must be QCL type D.

[0057] Among them, the definitions of different QCL type configurations are as follows:

[0058] 'QCL-TypeA': {Doppler shift, Doppler spread, average delay, delay spread};

[0059] 'QCL-TypeB': {Doppler shift, Doppler spread};

[0060] 'QCL-TypeC':{Doppler shift, average delay};

[0061] 'QCL-TypeD':{Spatial Rx parameter}.

[0062] If the network device configures the QCL reference signal of the target downlink channel as a reference SSB or reference CSI-RS resource through the TCI state, and the QCL type is configured as typeA, typeB or typeC, the terminal device can assume that the target downlink channel and the target large-scale parameter of the reference SSB or reference CSI-RS resource are the same, so as to receive the same corresponding receiving parameters, and the target large-scale parameters are determined by the QCL type configuration. Similarly, if the network device configures the QCL reference signal of the target downlink channel as a reference SSB or reference CSI-RS resource through the TCI state, and the QCL type is configured as type D, the terminal device can use the same receiving beam (i.e., Spatial Rx parameter) as the reference SSB or reference CSI-RS resource to receive the target downlink channel. Typically, the target downlink channel and its reference SSB or reference CSI-RS resource are sent by the same TRP or the same antenna panel (panel) or the same beam on the network side. If the transmission TRP or transmission panel or transmission beam of two downlink signals or downlink channels is different, different TCI states are usually configured.

[0063] For downlink control channels, the TCI state can be indicated by radio resource control (RRC) signaling or RRC signaling + MAC signaling. For downlink data channels, the available TCI state set is indicated by RRC signaling, and some of the TCI states are activated by MAC layer signaling. Finally, the TCI state indication field in the DCI indicates one or two TCI states from the activated TCI states for the PDSCH scheduled by the DCI. For example, Figure 4 As shown, the network device indicates N candidate TCI states through RRC signaling, activates K TCI states through media access control (MAC) signaling, and finally indicates 1 or 2 used TCI states from the activated TCI states through the TCI state indication field in the DCI. For CSI-RS, its QCL source signal can be directly configured through high-level signaling, which can be a synchronization signal block (Synchronization Signal Block, SSB) or another channel state information reference signal (Channel State Information Reference Signal, CSI-RS).

[0064] In the NR system, the terminal device can use analog beams to transmit uplink data and uplink control information. The terminal device can perform uplink beam management based on the Sounding Reference Signal (SRS) signal to determine the analog beam used for uplink transmission. Specifically, the network device can configure an SRS resource set for the terminal device, select an SRS resource with the best reception quality based on the SRS transmitted by the terminal device in the SRS resource set, and notify the terminal device of the corresponding SRS resource indicator (SRS resource indicator, SRI). After receiving the SRI, the terminal device determines the analog beam used for the SRS resource indicated by the SRI as the analog beam used for transmitting the physical uplink shared channel (Physical Uplink Shared Channel, PUSCH). For PUSCH scheduled by DCI, the SRI is indicated by the SRI indication field in the DCI; for PUSCH scheduled by Radio Resource Control (RRC), the SRI is notified by the corresponding scheduling signaling. If the DCI used to schedule PUSCH is DCI format 0_0, the DCI does not contain SRI, and the terminal device uses the transmission beam on the PUCCH resource with the lowest resource identifier (Identity, ID) in the physical uplink control channel (Physical Uplink Control Channel, PUCCH) configured with space-related information on the activated bandwidth part (Band Width Part, BWP) of the carrier where the PUSCH is located as the transmission beam of the PUSCH, and at the same time, the terminal device uses the path loss measurement reference signal of the PUCCH as the path loss measurement reference signal of the PUSCH. If the activated BWP on the carrier where the PUSCH scheduled by the DCI format 0_0 is located is not configured with PUCCH resources, or the PUCCH resources configured on the activated BWP on the carrier where the PUSCH is located are not configured with space-related information, the terminal device can obtain the transmission beam and path loss measurement reference signal of the PUSCH based on the quasi-co-located (QCL) assumption (QCL type D) used by the CORESET with the lowest ID in the downlink BWP activated on the carrier. For example, the receiving beam of the downlink reference signal included in the QCL hypothesis may be used as the transmitting beam of the PUSCH, and the downlink reference signal may be used as the path loss measurement reference signal of the PUSCH.

[0065] For PUCCH, a similar method is used to indicate the beam used. Specifically, for each PUCCH resource, multiple PUCCH spatial related information (PUCCH-spatialrelationinfo) are configured in the RRC signaling, and then the currently used PUCCH-spatialrelationinfo is indicated therefrom through the Media Access Control (MAC) layer signaling. Among them, each PUCCH-spatialrelationinfo contains a reference signal for determining the transmit beam of the PUCCH, which can be an SRS or a channel state information reference signal (Channel State Information Reference Signal, CSI-RS) or a synchronization signal block (Synchronization SignalBlock, SSB). PUCCH-spatialrelationinfo can also include the power control parameters of the corresponding PUCCH. For each SRS resource, the corresponding SRS spatial related information (SRS-spatialrelationinfo) can also be configured through RRC signaling, which includes a reference signal for determining the transmit beam of the SRS. If the network side does not configure PUCCH-spatialrelationinfo, the terminal device can use a method similar to PUSCH to obtain the transmit beam of the PUCCH based on the QCL assumption (QCL type D) used by the control resource set (Control Resource Set, CORESET) with the lowest ID in the downlink BWP activated on the carrier where the PUCCH is located. For example, the receive beam of the downlink reference signal contained in the QCL assumption can be used as the transmit beam of the PUCCH.

[0066] In the NR system, each data channel and control channel can use a corresponding scrambling sequence.

[0067] In the embodiment of the present application, the scrambling sequence c of the PDSCH (q) (i) is a pseudo-random sequence, specifically a Gold sequence with a length of 31, and the length of the output sequence c(n) is M PN ,n=0,1,…,M PN -1 is defined by the following formula 1:

[0068] c(n)=(x1(n+N C )+x2(n+N C ))mod 2

[0069] x1(n+31)=(x1(n+3)+x1(n))mod 2

[0070] x2(n+31)=(x2(n+3)+x2(n+2)+x2(n+1)+x n (n))mod 2

[0071] In Formula 1, N C = 1600, the first m-sequence x1(n) is initialized by x1(0) = 1, x1(n) = 0, n = 1, 2, ..., 30. The initialization value x2(n) of the second m-sequence is given by Get, where c init Determined according to the application scenario of the sequence.

[0072] Specifically, for PDSCH, its initialization value c init It is obtained by the following formula 2:

[0073] c init =n RNTI 2 15 +q·2 14 +n ID Formula 2

[0074] Wherein, q={0,1} is the index of the current codeword. When the cyclic redundancy check (CRC) of the PDCCH that schedules the PDSCH is scrambled using the Cell Radio Network Temporary Identity (C-RNTI), the Modulation and Coding Scheme Cell Radio Network Temporary Identity (MCS-C-RNTI), or the Configured Scheduling Radio Network Temporary Identity (CS-RNTI), and the DCI format 1_0 in the Common Search Space (CSS) is not used for scheduling, and the PDSCH scrambling ID is configured by the high-level signaling, n ID ∈{0,1,…,1023} is obtained by high-level signaling; in other cases ( is the cell ID of the serving cell). Here n RNTI It is the RNTI used for PDCCH CRC scrambling that schedules the PDSCH.

[0075] In the embodiment of the present application, the scrambling sequence generation method of the PDCCH is the same as that of the PDSCH, but the initialization value of the scrambling sequence is different. For the PDCCH, its initialization value c init It is obtained by the following formula 3:

[0076] c init =(n RNTI 2 16 +n ID )mod 2 31 Formula 3

[0077] If the PDCCH belongs to the UE Search Space (USS) and the higher layer signaling is configured with the PDCCH scrambling ID, then n ID ∈{0,1,…,65535} is configured by high-level signaling. If the higher layer signaling configures the scrambling ID of the PDCCH, then the n of the PDCCH in the USS RNTI Equal to C-RNTI, otherwise n RNTI =0.

[0078] In the embodiment of the present application, the scrambling sequence generation method of PUSCH is the same as that of PDSCH, but the initialization value of the scrambling sequence is different. For PUSCH, its initialization value c init It is obtained by the following formula 4:

[0079]

[0080] Among them, when the CRC of the PDCCH scheduling the PUSCH is scrambled by C-RNTI, MCS-C-RNTI or CS-RNTI, and the DCI format 0_0 in the CSS is not used for scheduling, and the high-level signaling is configured with the PUSCH scrambling ID, or when the PUSCH is triggered by the Type 2 random access process, n ID ∈{0,1,…,1023} is obtained by high-level signaling; in other cases Here n RNTI It is the RNTI used for CRC scrambling of the PDCCH that schedules the PUSCH.

[0081] In the embodiment of the present application, the scrambling sequence generation method of PUCCH is the same as that of PUSCH, but the initialization value of the scrambling sequence is different. For PUCCH, its initialization value c init It is obtained by the following formula 5:

[0082] c init =n RNTI 2 15 +n IDFormula 5

[0083] Among them, n ID ∈{0,1,…,1023} is obtained by high-level signaling. If the high-level signaling is not configured, n RNTI Equal to the C-RNTI of the terminal device.

[0084] For uplink and downlink incoherent transmission, when no dedicated scrambling ID is configured at the high level or the channel comes from the public search space, the terminal device will generate the scrambling sequence of the channel based on the cell ID of the current serving cell. For uplink and downlink incoherent transmission, the multiple coordinated TRPs can be different physical cells, that is, the user's channels may come from different cells, but at this time, the scrambling sequence generation of these channels will still only use the same cell ID of the serving cell. In this case, the scrambling sequences of the channels transmitted between different cells and the same user are exactly the same, which will cause serious mutual interference, thereby affecting the performance of multi-cell coordinated transmission.

[0085] Based on the above problems, the present application proposes a channel scrambling scheme. When the high layer does not configure a dedicated scrambling ID or the channel comes from a public search space, the terminal device can determine the cell ID of the cell sending or receiving the current channel based on the SSB used to obtain the transmitting beam or receiving beam of the channel, which is used to generate the scrambling sequence of the corresponding channel, thereby ensuring that the channels transmitted between the terminal device and different cells use different scrambling sequences, reducing mutual interference between these channels and improving the performance of multi-cell collaborative transmission.

[0086] The technical solution of the present application is described in detail below through specific embodiments.

[0087] Figure 5 is a schematic flow chart of a channel scrambling method 200 according to an embodiment of the present application, such as Figure 5 As shown, the method 200 may include at least part of the following contents:

[0088] S210, the terminal device determines an initialization value of a scrambling sequence of a first channel according to a cell identifier carried by a first SSB, wherein the first SSB is used to obtain a transmit beam or a receive beam of the first channel;

[0089] S220: The terminal device generates a scrambling sequence for the first channel according to the initialization value of the scrambling sequence.

[0090] In the embodiment of the present application, the first channel may be an uplink channel or a downlink channel.

[0091] Optionally, the first channel includes but is not limited to at least one of the following:

[0092] PDCCH, PDSCH, PUCCH, PUSCH.

[0093] In an embodiment of the present application, for uplink and downlink non-coherent transmission, the terminal device can determine the initialization value of the scrambling sequence of the first channel according to the cell identifier carried by the first SSB used to obtain the transmission beam or the receiving beam of the first channel, and generate the scrambling sequence of the first channel according to the determined initialization value of the scrambling sequence. This ensures that the channels transmitted between the terminal device and different cells use different scrambling sequences, reduces mutual interference between these channels, and improves the performance of multi-cell collaborative transmission.

[0094] That is to say, in an embodiment of the present application, even if the high layer does not configure a dedicated scrambling identifier or the channel comes from a public search space, the terminal device can generate a scrambling sequence for the first channel based on the cell identifier carried by the first SSB of the transmitting beam or receiving beam used to obtain the first channel.

[0095] It should be noted that SSB can also be called synchronization signal / physical broadcast channel block (synchronization signal / physical broadcast channel block, SS / PBCH block).

[0096] It should also be noted that, in the embodiments of the present application, the transmission beam may also be referred to as a spatial domain transmission filter (Spatial domain transmission filter or Spatial domain filter for transmission) or a spatial relation (Spatial relation) or a spatial setting. The reception beam may also be referred to as a spatial domain reception filter (Spatial domain reception filter or Spatialdomain filter for reception) or a spatial reception parameter (Spatial Rx parameter).

[0097] Optionally, the cell identifier is a cell identifier carried by a primary synchronization signal (Primary Synchronization Signal, PSS) and a secondary synchronization signal (Secondary Synchronization Signal, SSS) in the first SSB.

[0098] Optionally, the information field for indicating the first SSB includes the cell identifier carried by the first SSB. In addition, in an embodiment of the present application, the terminal device can detect the first SSB based on the information field.

[0099] Example 1: The first channel is a downlink channel. For example, the first channel is a PDCCH or a PDSCH.

[0100] In Example 1, the first SSB is the SSB indicated in the TCI state of the downlink channel, or the first SSB is the QCL source signal of the CSI-RS resource indicated in the TCI state of the downlink channel.

[0101] It should be noted that the QCL source signal of the CSI-RS resource can be understood as a signal that provides a QCL reference for the CSI-RS resource and is used to obtain a receiving beam or a transmitting beam of the CSI-RS resource.

[0102] Optionally, in Example 1, when the first SSB is the SSB indicated in the TCI state of the downlink channel, the terminal device uses the receiving beam of the first SSB as the receiving beam of the downlink channel.

[0103] Optionally, in Example 1, when the first SSB is the QCL source signal of the CSI-RS resource indicated in the TCI state of the downlink channel, the terminal device uses the receiving beam of the first SSB as the receiving beam of the CSI-RS resource, and uses the receiving beam of the CSI-RS resource as the receiving beam of the downlink channel.

[0104] Example 2: The first channel is an uplink channel. For example, the first channel is a PUCCH or a PUSCH.

[0105] In Example 2, the first SSB is the SSB indicated in the TCI state of the uplink channel or the space-related information, or the first SSB is the QCL source signal of the CSI-RS resource indicated in the TCI state of the uplink channel or the space-related information, or the first SSB is the QCL source signal of the SRS resource indicated in the TCI state of the uplink channel or the space-related information.

[0106] It should be noted that the QCL source signal of the CSI-RS resource can be understood as a signal that provides a QCL reference for the CSI-RS resource, which is used to obtain a receive beam or a transmit beam of the CSI-RS resource. In addition, the QCL source signal of the SRS resource can be understood as a signal that provides a QCL reference for the SRS resource, which is used to obtain a receive beam or a transmit beam of the SRS resource.

[0107] Optionally, in Example 2, when the first SSB is the SSB indicated in the TCI state or spatial-related information of the uplink channel, the terminal device uses the receiving beam of the first SSB as the transmitting beam of the uplink channel.

[0108] Optionally, in Example 2, when the first SSB is the QCL source signal of the CSI-RS resource indicated in the TCI state of the uplink channel or the spatial-related information, the terminal device uses the receiving beam of the first SSB as the receiving beam of the CSI-RS resource, and uses the receiving beam of the CSI-RS resource as the transmitting beam of the uplink channel.

[0109] Optionally, in Example 2, when the first SSB is the QCL source signal of the SRS resource indicated in the TCI state of the uplink channel or the space-related information, the terminal device uses the receiving beam of the first SSB as the transmitting beam of the SRS resource, and uses the transmitting beam of the SRS resource as the transmitting beam of the uplink channel.

[0110] Example 3, the first channel is PUSCH.

[0111] In Example 3, the first SSB is the SSB indicated in the TCI state or space-related information of the first SRS resource, and the first SRS resource is the SRS resource indicated by the SRS resource included in the scheduling information of the PUSCH.

[0112] Optionally, in Example 3, the terminal device uses the receiving beam of the first SSB as the transmitting beam of the first SRS resource, and uses the transmitting beam of the first SRS resource as the transmitting beam of the PUSCH.

[0113] Optionally, in some embodiments, when the cell identifier is different from the cell identifier of the serving cell, the terminal device determines the initialization value of the scrambling sequence of the first channel according to the cell identifier and the cell identifier of the serving cell. For example, the first channel is PDSCH, and the initialization value c of the scrambling sequence is init It can be obtained by the following formula 6 or formula 7:

[0114] c init =n RNTI 2 15 +q·2 14 +n ID Formula 6

[0115]

[0116] Among them, n ID It is calculated based on the cell ID and the cell ID of the serving cell. in is the cell identifier, is the cell identifier of the serving cell, and N is the number of cell identifiers.

[0117] The channel scrambling method 200 in the present application is described in detail below through Examples 1 to 4.

[0118] In Embodiment 1, the first channel is PDSCH, and the first SSB is SSB 1. Specifically, the terminal device determines the initialization value of the scrambling sequence of the PDSCH according to the cell identifier carried by SSB 1 used to obtain the receiving beam of the PDSCH.

[0119] In one implementation of Example 1, the SSB1 is the SSB indicated in the TCI state of the PDSCH. In this case, the terminal device can use the receiving beam of the SSB1 as the receiving beam of the PDSCH.

[0120] In another implementation of Example 1, the SSB1 is a QCL source signal of the CSI-RS resource indicated in the TCI state of the PDSCH. In this case, the terminal device can use the receiving beam of the SSB1 as the receiving beam of the CSI-RS resource, and then use the receiving beam of the CSI-RS resource as the receiving beam of the PDSCH.

[0121] For example, the QCL source signal of the CSI-RS resource is the SSB indicated in the TCI state configured for the CSI-RS resource by high-level signaling, that is, the SSB1 and the CSI-RS resource are quasi-co-located. In this case, the terminal device can assume that the receiving beams of the SSB1 and the CSI-RS resource are the same.

[0122] In embodiment 1, the TCI state may be indicated by the DCI that schedules the PDSCH.

[0123] For example, the TCI state may include indication information of the SSB index (corresponding to SSB1), which is used to indicate the SSB corresponding to the SSB index, namely, SSB1.

[0124] For another example, the TCI state may include indication information of a CSI-RS resource identifier, which is used to indicate the CSI-RS resource corresponding to the CSI-RS resource identifier.

[0125] Optionally, in Embodiment 1, the cell identifier is a cell identifier carried by the PSS and SSS in the SSB1.

[0126] In one implementation, the information field for indicating the SSB1 may include a cell identifier carried by the SSB1 to help the terminal detect the SSB1. In this case, the terminal device may directly determine the initialization value of the scrambling sequence of the PDSCH according to the indicated cell identifier.

[0127] For example, the information field for indicating SSB1 contained in the TCI state may include the following information: the cell identifier carried by the SSB, the SSB index, the subcarrier spacing of the SSB, and the frequency domain position of the SSB. In this case, the terminal device can directly use the cell identifier to determine the initialization value of the scrambling sequence of the PDSCH.

[0128] It should be noted that the cell identifier carried by SSB1 may be the same as or different from the cell identifier of the service cell of the terminal device.

[0129] Optionally, in Embodiment 1, when the PDSCH is scheduled through DCI format 1_0 in the common search space, or when the RRC signaling does not include the PDSCH scrambling identifier, or when the CRC check code of the PDCCH that schedules the PDSCH is not scrambled by C-RNTI, MCS-C-RNTI or CS-RNTI, the terminal device can determine the initialization value of the scrambling sequence of the PDSCH based on the cell identifier carried by SSB1 used to obtain the receiving beam of the PDSCH. In other cases, the terminal device can use the scrambling identifier configured by high-level signaling to obtain the initialization value of the scrambling sequence of the PDSCH.

[0130] The specific method for generating the initialization value of the scrambling sequence can refer to the above formula 2, and it is only necessary to replace the cell identifier of the serving cell with the cell identifier carried by the SSB1. That is, in Example 1, the initialization value c of the scrambling sequence of the PDSCH is init It is obtained by the following formula 8:

[0131] c init =n RNTI 2 15 +q·2 14 +n ID Formula 8

[0132] Where q = {0, 1} is the index of the current codeword. When the CRC of the PDCCH that schedules the PDSCH is scrambled using C-RNTI, MCS-C-RNTI or CS-RNTI, and the DCI format 1_0 in the CSS is not used for scheduling, n ID ∈{0,1,…,1023} is obtained from high-level parameters; in other cases ( is the cell ID carried by the SSB1).

[0133] Optionally, in Embodiment 1, the terminal device generates the scrambling sequence of the PDSCH according to the initialization value of the scrambling sequence. The specific method of generating the scrambling sequence can refer to the above formula 1, which will not be described in detail here.

[0134] Optionally, in Embodiment 1, the terminal device detects the data carried by the PDSCH according to the generated scrambling sequence. Specifically, the terminal device descrambles the data carried by the PDSCH according to the scrambling sequence, thereby detecting the data.

[0135] In Embodiment 2, the first channel is PDCCH, and the first SSB is SSB2. Specifically, the terminal device determines the initialization value of the scrambling sequence of the PDCCH according to the cell identifier carried by SSB2 used to obtain the receiving beam of the PDCCH.

[0136] In one implementation of Example 2, the SSB2 is the SSB indicated in the TCI state of the PDCCH. In this case, the terminal device directly uses the receiving beam of the SSB2 as the receiving beam of the PDCCH.

[0137] In another implementation of Example 2, the SSB2 is a QCL source signal of the CSI-RS resource indicated in the TCI state of the PDCCH. In this case, the terminal device uses the receive beam of the SSB2 as the receive beam of the CSI-RS resource, and uses the receive beam of the CSI-RS resource as the receive beam of the PDCCH.

[0138] For example, the QCL source signal of the CSI-RS resource is the SSB indicated in the TCI state configured for the CSI-RS resource by high-level signaling, that is, the SSB2 and the CSI-RS resource are quasi-co-located. In this case, the terminal device can assume that the receiving beams of the SSB2 and the CSI-RS resource are the same.

[0139] In embodiment 1, the TCI state may be indicated by Media Access Control Control Element (MAC CE) signaling.

[0140] For example, the TCI state may include indication information of the SSB index (corresponding to SSB2), which is used to indicate the SSB corresponding to the SSB index, namely, SSB2.

[0141] For another example, the TCI state may include indication information of a CSI-RS resource identifier, which is used to indicate the CSI-RS resource corresponding to the CSI-RS resource identifier.

[0142] Optionally, in Example 2, the cell identifier is a cell identifier carried by the PSS and SSS in the SSB2. In one embodiment, the information field used to indicate the SSB2 may include the cell identifier carried by the SSB2 to help the terminal detect the SSB2. In this case, the terminal device can directly determine the initialization value of the scrambling sequence of the PDSCH based on the indicated cell identifier.

[0143] For example, the information field for indicating SSB2 contained in the TCI state may include the following information: the physical cell identifier carried by the SSB, the SSB index, the subcarrier spacing of the SSB, and the frequency domain position of the SSB. In this case, the terminal device can directly use the cell identifier to determine the initialization value of the scrambling sequence of the PDSCH.

[0144] It should be noted that the cell identifier carried by SSB2 may be the same as or different from the service cell identifier of the terminal device.

[0145] Optionally, in Embodiment 2, when the PDCCH is transmitted in a common search space, or when the RRC signaling does not include the PDCCH scrambling ID, the terminal device may determine the initialization value of the scrambling sequence of the PDCCH based on the cell identifier carried by SSB2 of the receiving beam used to obtain the PDCCH. In other cases, the terminal device may use the PDCCH scrambling ID configured by high-level signaling to obtain the initialization value of the scrambling sequence of the PDCCH.

[0146] The specific method for generating the initialization value of the scrambling sequence can refer to the above formula 3, and it is only necessary to replace the cell identifier of the serving cell with the cell identifier carried by the SSB2. That is, in embodiment 2, the initialization value c of the scrambling sequence of the PDCCH is init It is obtained by the following formula 9:

[0147] c init =(n RNTI 2 16 +n ID )mod 2 31 Formula 9

[0148] If the PDCCH belongs to the USS and the higher layer signaling configures the PDCCH scrambling ID, then n ID ∈{0,1,…,65535} is configured by high-level signaling. ( is the cell ID carried by the SSB2). If the high-level signaling configures the scrambling ID of the PDCCH, then the n of the PDCCH in the USS RNTI Equal to C-RNTI, otherwise n RNTI=0.

[0149] Optionally, in Embodiment 2, the terminal device generates a scrambling sequence for the PDCCH according to an initialization value of the scrambling sequence. The specific method for generating a scrambling sequence may refer to the above formula 1, which will not be described in detail here.

[0150] Optionally, in Embodiment 2, the terminal device detects the control information carried by the PDCCH according to the generated scrambling sequence. Specifically, the terminal device descrambles the control information carried by the PDCCH according to the scrambling sequence, thereby detecting the control information.

[0151] In Embodiment 3, the first channel is PUSCH, and the first SSB is SSB3. Specifically, the terminal device determines the initialization value of the scrambling sequence of the PUSCH according to the cell identifier carried by SSB3 used to obtain the transmit beam of the PUSCH.

[0152] In one implementation of Example 3, the SSB3 is the SSB indicated in the TCI state of the PUSCH. In this case, the terminal device directly uses the receiving beam of the SSB3 as the transmitting beam of the PUSCH.

[0153] In another implementation of Example 3, the SSB3 is a QCL source signal of the CSI-RS resource indicated in the TCI state of the PUSCH. In this case, the terminal device uses the receive beam of the SSB3 as the receive beam of the CSI-RS resource, and uses the receive beam of the CSI-RS resource as the transmit beam of the PUSCH.

[0154] For example, the QCL source signal of the CSI-RS resource is the SSB indicated in the TCI state configured for the CSI-RS resource by high-level signaling, that is, the SSB3 and the CSI-RS resource are quasi-co-located. In this case, the terminal device can assume that the receiving beams of the SSB3 and the CSI-RS resource are the same.

[0155] In another implementation of Example 3, the SSB3 is a QCL source signal of the SRS resource indicated by the TCI state of the PUSCH. In this case, the terminal device uses the receiving beam of the SSB3 as the transmitting beam of the SRS resource, and uses the transmitting beam of the SRS resource as the transmitting beam of the PUSCH.

[0156] For example, the QCL source signal of the SRS resource is the space-related information configured for the SRS resource through high-level signaling or the SSB indicated in the TCI state, and the terminal device can use the receiving beam of the SSB3 as the transmitting beam on the SRS resource.

[0157] Specifically, the TCI state may be indicated by the DCI that schedules the PUSCH, or by MAC CE signaling.

[0158] For example, the TCI state may include indication information of the SSB index (corresponding to SSB3), which is used to indicate the SSB corresponding to the SSB index, namely, SSB3.

[0159] For another example, the TCI state may include indication information of a CSI-RS resource identifier, which is used to indicate the CSI-RS resource corresponding to the CSI-RS resource identifier.

[0160] For another example, the TCI state may include indication information of an SRS resource identifier, which is used to indicate the SRS resource corresponding to the SRS resource identifier.

[0161] In another implementation of Example 3, the SSB3 is the SSB indicated in the TCI state or space-related information of the first SRS resource, and the first SRS resource is the SRS resource indicated by the SRI information contained in the scheduling information of the PUSCH; wherein the scheduling information of the PUSCH may be the DCI for scheduling the PUSCH, or may be the RRC signaling for scheduling the PUSCH. In this case, the terminal device uses the receive beam of the SSB3 as the transmit beam of the first SRS resource, and uses the transmit beam of the first SRS resource as the transmit beam of the PUSCH.

[0162] Optionally, in Example 3, the cell identifier is a cell identifier carried by the PSS and SSS in the SSB3. In one embodiment, the information field used to indicate the SSB3 may include the cell identifier carried by the SSB3 to help the terminal detect the SSB3. In this case, the terminal device can directly determine the initialization value of the scrambling sequence of the PUSCH based on the indicated cell identifier.

[0163] For example, the information field indicating SSB3 included in the space-related information may include the following information: the physical cell identifier and SSB index carried by the SSB. In this case, the terminal device may directly use the cell identifier to determine the initialization value of the scrambling sequence of the PUSCH.

[0164] It should be noted that the cell identifier carried by SSB3 may be the same as or different from the service cell identifier of the terminal device.

[0165] Optionally, in Example 3, when the PUSCH is scheduled through DCI format 0_0 in the common search space, or, when the RRC signaling does not include the PUSCH scrambling ID, or, when the CRC check code of the PDCCH that schedules the PUSCH is not scrambled by C-RNTI, MCS-C-RNTI, Semi-Persistent Channel State Information Radio Network Temporary Identity (SP-CSI-RNTI) or CS-RNTI, the terminal device determines the initialization value of the scrambling sequence of the PUSCH based on the cell identifier carried by SSB3 used to obtain the transmit beam of the PUSCH. In other cases, the terminal device can use the PUSCH scrambling ID configured by high-level signaling to obtain the initialization value of the scrambling sequence of the PUSCH.

[0166] The specific method for generating the initialization value of the scrambling sequence can refer to the above formula 4, and it is only necessary to replace the cell identifier of the serving cell with the cell identifier carried by the SSB3. That is, in Example 3, the initialization value c of the scrambling sequence of the PUSCH is init It is obtained by the following formula 10:

[0167]

[0168] Among them, when the CRC of the PDCCH scheduling the PUSCH is scrambled by C-RNTI, MCS-C-RNTI, SP-CSI-RNTI or CS-RNTI, and the DCI format 0_0 in the CSS is not used for scheduling, and the high-level signaling configures the PUSCH scrambling ID, or when the PUSCH is triggered by the Type 2 random access process, n ID ∈{0,1,…,1023} is obtained by high-level signaling; in other cases ( is the cell identifier carried by the SSB).

[0169] Optionally, in Embodiment 3, the terminal device generates the scrambling sequence of the PUSCH according to the initialization value of the scrambling sequence. The specific method of generating the scrambling sequence can refer to the above formula 1, which will not be described in detail here.

[0170] Optionally, in Embodiment 3, the terminal device transmits the PUSCH according to the generated scrambling sequence. Specifically, the terminal device scrambles the data carried by the PUSCH using the scrambling sequence, and transmits the scrambled data through the PUSCH.

[0171] In Embodiment 4, the first channel is PUCCH, and the first SSB is SSB 4. Specifically, the terminal device determines the initialization value of the scrambling sequence of the PUCCH according to the cell identifier carried by SSB 4 used to obtain the transmission beam of the PUCCH.

[0172] In one implementation of Example 4, the SSB4 is the SSB indicated in the TCI state or space-related information of the PUCCH. In this case, the terminal device directly uses the receiving beam of the SSB4 as the transmitting beam of the PUCCH.

[0173] In another implementation of Example 4, the SSB4 is a QCL source signal of a CSI-RS resource indicated in the TCI state or space-related information of the PUCCH. In this case, the terminal device uses the receive beam of the SSB4 as the receive beam of the CSI-RS resource, and uses the receive beam of the CSI-RS resource as the transmit beam of the PUCCH.

[0174] For example, the QCL source signal of the CSI-RS resource is the SSB indicated in the TCI state configured for the CSI-RS resource by high-level signaling, that is, the SSB4 and the CSI-RS resource are quasi-co-located. In this case, the terminal device can assume that the receiving beams of the SSB4 and the CSI-RS resource are the same.

[0175] In another implementation of Example 4, the SSB4 is a QCL source signal of the SRS resource indicated in the TCI state or space-related information of the PUCCH. In this case, the terminal device uses the receiving beam of the SSB4 as the transmitting beam of the SRS resource, and uses the transmitting beam of the SRS resource as the transmitting beam of the PUCCH.

[0176] For example, the QCL source signal of the SRS resource is the space-related information configured for the SRS resource through high-level signaling or the SSB indicated in the TCI state. The terminal can use the receiving beam of the SSB4 as the transmitting beam on the SRS resource.

[0177] Specifically, the TCI state or space-related information may be indicated through RRC signaling or MAC CE signaling.

[0178] For example, the TCI status or space-related information may include indication information of the SSB index (corresponding to SSB4), which is used to indicate the SSB corresponding to the SSB index, namely, SSB4.

[0179] For another example, the TCI state or space related information may include indication information of a CSI-RS resource ID, which is used to indicate the CSI-RS resource corresponding to the CSI-RS resource ID.

[0180] For another example, the TCI state or space-related information may include indication information of the SRS resource ID, which is used to indicate the SRS resource corresponding to the SRS resource ID.

[0181] Optionally, in Embodiment 4, the cell identifier is a cell identifier carried by the PSS and SSS in the SSB4. In one implementation, the information field used to indicate the SSB4 may include the cell identifier carried by the SSB4 to help the terminal detect the SSB4. In this case, the terminal device may directly determine the initialization value of the scrambling sequence of the PUCCH based on the indicated cell identifier.

[0182] For example, the information field indicating SSB4 included in the space-related information may include the following information: the physical cell identifier and SSB index carried by the SSB. In this case, the terminal device may directly use the cell identifier to determine the initialization value of the scrambling sequence of the PUSCH.

[0183] It should be noted that the cell identifier carried by SSB4 may be the same as or different from the service cell identifier of the terminal device.

[0184] Optionally, in Embodiment 4, when the RRC signaling does not include the PUSCH scrambling ID, the terminal device determines the initialization value of the scrambling sequence of the PUCCH according to the cell identifier carried by the SSB4 used to obtain the transmit beam of the PUCCH. In other cases, the terminal device may use the PUSCH scrambling ID configured by the high-level signaling to obtain the initialization value of the scrambling sequence of the PUCCH.

[0185] The specific method for generating the initialization value of the scrambling sequence can refer to the above formula 5, and it is only necessary to replace the cell identifier of the serving cell with the cell identifier carried by the SSB4. That is, in embodiment 4, the initialization value c of the scrambling sequence of the PUCCH is init It is obtained by the following formula 11:

[0186] c init =n RNTI 2 15 +n ID Formula 11

[0187] Among them, n ID ∈{0,1,…,1023} is obtained by high-level signaling. If the high-level signaling is not configured, ( is the cell identifier carried by the SSB4). RNTI Equal to the C-RNTI of the terminal device.

[0188] Optionally, in Embodiment 4, the terminal device generates the scrambling sequence of the PUCCH according to the initialization value of the scrambling sequence. The specific method of generating the scrambling sequence can refer to the above formula 1, which will not be described in detail here.

[0189] Optionally, in Embodiment 4, the terminal device transmits the PUCCH according to the generated scrambling sequence. Specifically, the terminal device scrambles the control information carried by the PUCCH using the scrambling sequence, and transmits the scrambled control information through the PUCCH.

[0190] It should be noted that, in the embodiment of the present application, the cell identifier may be a physical cell identifier (ID).

[0191] Therefore, in the embodiment of the present application, the terminal device can determine the initialization value of the scrambling sequence of the first channel according to the cell identifier carried by the first SSB used to obtain the transmission beam or the reception beam of the first channel, and generate the scrambling sequence of the first channel according to the determined initialization value of the scrambling sequence. This ensures that the channels transmitted between the terminal device and different cells use different scrambling sequences, reduces mutual interference between these channels, and improves the performance of multi-cell cooperative transmission.

[0192] Furthermore, in an embodiment of the present application, even if the high layer does not configure a dedicated scrambling identifier or the channel comes from a public search space, the terminal device can generate a scrambling sequence for the first channel based on the cell identifier carried by the first SSB of the transmitting beam or receiving beam used to obtain the first channel.

[0193] Combination of the above Figure 5 , describes in detail the method embodiment of the present application, and the following is combined with Figures 6 to 9 , the device embodiments of the present application are described in detail. It should be understood that the device embodiments and the method embodiments correspond to each other, and similar descriptions can refer to the method embodiments.

[0194] Figure 6 FIG. 3 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application. Figure 6 As shown, the terminal device 300 includes:

[0195] The processing unit 310 is configured to determine an initialization value of a scrambling sequence of a first channel according to a cell identifier carried by a first SSB, wherein the first SSB is used to obtain a transmit beam or a receive beam of the first channel;

[0196] The processing unit 310 is further configured to generate a scrambling sequence for the first channel according to the initialization value of the scrambling sequence.

[0197] Optionally, when the first channel is a downlink channel, the first SSB is the SSB indicated in the transmission configuration indication TCI state of the downlink channel, or the first SSB is the quasi-co-site QCL source signal of the channel state information reference signal CSI-RS resource indicated in the TCI state of the downlink channel.

[0198] Optionally, when the first SSB is the SSB indicated in the TCI state of the downlink channel, the processing unit 310 is also used to use the receiving beam of the first SSB as the receiving beam of the downlink channel.

[0199] Optionally, when the first SSB is the QCL source signal of the CSI-RS resource indicated in the TCI state of the downlink channel, the processing unit 310 is also used to use the receiving beam of the first SSB as the receiving beam of the CSI-RS resource, and use the receiving beam of the CSI-RS resource as the receiving beam of the downlink channel.

[0200] Optionally, the downlink channel includes at least one of the following:

[0201] Physical downlink control channel PDCCH, physical downlink shared channel PDSCH.

[0202] Optionally, when the first channel is an uplink channel, the first SSB is the SSB indicated in the TCI state of the uplink channel or the space-related information, or the first SSB is the QCL source signal of the CSI-RS resource indicated in the TCI state of the uplink channel or the space-related information, or the first SSB is the QCL source signal of the sounding reference signal SRS resource indicated in the TCI state of the uplink channel or the space-related information.

[0203] Optionally, when the first SSB is the SSB indicated in the TCI state or space-related information of the uplink channel, the processing unit 310 is also used to use the receiving beam of the first SSB as the transmitting beam of the uplink channel.

[0204] Optionally, when the first SSB is the QCL source signal of the CSI-RS resource indicated in the TCI state of the uplink channel or the space-related information, the processing unit 310 is also used to use the receiving beam of the first SSB as the receiving beam of the CSI-RS resource, and use the receiving beam of the CSI-RS resource as the transmitting beam of the uplink channel.

[0205] Optionally, when the first SSB is the QCL source signal of the SRS resource indicated in the TCI state of the uplink channel or the space-related information, the processing unit 310 is also used to use the receiving beam of the first SSB as the transmitting beam of the SRS resource, and use the transmitting beam of the SRS resource as the transmitting beam of the uplink channel.

[0206] Optionally, the uplink channel includes at least one of the following:

[0207] Physical uplink control channel PUCCH, physical uplink shared channel PUSCH.

[0208] Optionally, the uplink channel is a physical uplink shared channel PUSCH, and the TCI state or space-related information is indicated by a DCI that schedules the PUSCH, or the TCI state or space-related information is indicated by MAC CE signaling.

[0209] Optionally, when the first channel is PUSCH, the first SSB is the SSB indicated in the TCI state or space-related information of the first SRS resource, and the first SRS resource is the SRS resource indicated by the SRS resource included in the scheduling information of the PUSCH.

[0210] Optionally, the processing unit 310 is further used to use the receiving beam of the first SSB as the transmitting beam of the first SRS resource, and use the transmitting beam of the first SRS resource as the transmitting beam of the PUSCH.

[0211] Optionally, the cell identifier is a cell identifier carried by a primary synchronization signal PSS and a secondary synchronization signal SSS in the first SSB.

[0212] Optionally, the information field used to indicate the first SSB includes the cell identifier carried by the first SSB.

[0213] Optionally, the processing unit 310 is specifically configured to:

[0214] When the cell identifier is different from the cell identifier of the serving cell, an initialization value of the scrambling sequence of the first channel is determined according to the cell identifier and the cell identifier of the serving cell.

[0215] Optionally, in some embodiments, the processing unit may be one or more processors.

[0216] It should be understood that the terminal device 300 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the terminal device 300 are respectively to implement Figure 5For the sake of brevity, the corresponding process of the terminal device in the method 200 is not repeated here.

[0217] Figure 7 It is a schematic structural diagram of a communication device 400 provided in an embodiment of the present application. Figure 7 The communication device 400 shown includes a processor 410, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0218] Alternatively, if Figure 7 As shown, the communication device 400 may further include a memory 420. The processor 410 may call and run a computer program from the memory 420 to implement the method in the embodiment of the present application.

[0219] The memory 420 may be a separate device independent of the processor 410 , or may be integrated into the processor 410 .

[0220] Alternatively, if Figure 7 As shown, the communication device 400 may further include a transceiver 430, and the processor 410 may control the transceiver 430 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.

[0221] The transceiver 430 may include a transmitter and a receiver. The transceiver 430 may further include an antenna, and the number of the antennas may be one or more.

[0222] Optionally, the communication device 400 may specifically be a network device of an embodiment of the present application, and the communication device 400 may implement corresponding processes implemented by the network device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0223] Optionally, the communication device 400 may specifically be a mobile terminal / terminal device of an embodiment of the present application, and the communication device 400 may implement the corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0224] Figure 8 It is a schematic structural diagram of the device of an embodiment of the present application. Figure 8 The device 500 shown includes a processor 510, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0225] Alternatively, if Figure 8As shown, the apparatus 500 may further include a memory 520. The processor 510 may call and run a computer program from the memory 520 to implement the method in the embodiment of the present application.

[0226] The memory 520 may be a separate device independent of the processor 510 , or may be integrated into the processor 510 .

[0227] Optionally, the apparatus 500 may further include an input interface 530. The processor 510 may control the input interface 530 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0228] Optionally, the apparatus 500 may further include an output interface 540. The processor 510 may control the output interface 540 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0229] Optionally, the device can be applied to the network equipment in the embodiments of the present application, and the device can implement the corresponding processes implemented by the network equipment in the various methods in the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0230] Optionally, the apparatus may be applied to a mobile terminal / terminal device in an embodiment of the present application, and the apparatus may implement corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0231] Optionally, the device mentioned in the embodiments of the present application may also be a chip, for example, a system-on-chip, a system-on-chip, a chip system, or a system-on-chip chip.

[0232] Fig. 9 600 is a schematic block diagram of a communication system 600 provided in an embodiment of the present application. Fig. 9 As shown, the communication system 600 includes a terminal device 610 and a network device 620 .

[0233] Among them, the terminal device 610 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 620 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they are not repeated here.

[0234] It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined and performed. The software module can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, and other mature storage media in the art. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0235] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0236] It should be understood that the above-mentioned memory is exemplary but not restrictive. For example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

[0237] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0238] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0239] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0240] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0241] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0242] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0243] The embodiment of the present application also provides a computer program.

[0244] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods in the embodiments of the present application. For the sake of brevity, they are not described here.

[0245] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of the present application. When the computer program is run on a computer, the computer executes the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0246] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0247] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0248] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0249] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0250] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0251] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. In view of such an understanding, the technical solution of the present application can be embodied in the form of a software product in essence or in other words, the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0252] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A channel scrambling method, characterized in that: include: The terminal device determines an initialization value of a scrambling sequence of a first channel according to a cell identifier carried by a first synchronization signal block SSB, wherein the first SSB is used to obtain a transmit beam or a receive beam of the first channel; The terminal device generates a scrambling sequence for the first channel according to the initialization value of the scrambling sequence; Wherein, when the first channel is a downlink channel, the first SSB is the SSB indicated in the transmission configuration indication TCI state of the downlink channel, or the first SSB is a quasi-co-located QCL source signal of a channel state information reference signal CSI-RS resource indicated in the TCI state of the downlink channel; or, In the case where the first channel is an uplink channel, the first SSB is the TCI state of the uplink channel or the SSB indicated in the space-related information, or the first SSB is the QCL source signal of the CSI-RS resource indicated in the TCI state of the uplink channel or the space-related information, or the first SSB is the QCL source signal of the sounding reference signal SRS resource indicated in the TCI state of the uplink channel or the space-related information; or, In the case that the first channel is a physical uplink shared channel PUSCH, the first SSB is an SSB indicated in a TCI state or space-related information of a first SRS resource, and the first SRS resource is an SRS resource indicated by an SRS resource included in the scheduling information of the PUSCH.

2. The method according to claim 1, characterized in that In the case where the first channel is a downlink channel, the method further includes: In a case where the first SSB is the SSB indicated in the TCI state of the downlink channel, the terminal device uses the receiving beam of the first SSB as the receiving beam of the downlink channel.

3. The method according to claim 1, characterized in that In the case where the first channel is a downlink channel, the method further includes: In a case where the first SSB is the QCL source signal of the CSI-RS resource indicated in the TCI state of the downlink channel, the terminal device uses the receiving beam of the first SSB as the receiving beam of the CSI-RS resource, and uses the receiving beam of the CSI-RS resource as the receiving beam of the downlink channel.

4. The method according to any one of claims 1 to 3, characterized in that The downlink channel includes at least one of the following: Physical downlink control channel PDCCH, physical downlink shared channel PDSCH.

5. The method according to claim 1, characterized in that In the case where the first channel is an uplink channel, the method further includes: When the first SSB is the SSB indicated in the TCI state or space-related information of the uplink channel, the terminal device uses the receiving beam of the first SSB as the transmitting beam of the uplink channel.

6. The method according to claim 1, characterized in that In the case where the first channel is an uplink channel, the method further includes: In a case where the first SSB is a QCL source signal of a CSI-RS resource indicated in the TCI state of the uplink channel or space-related information, the terminal device uses the receiving beam of the first SSB as the receiving beam of the CSI-RS resource, and uses the receiving beam of the CSI-RS resource as the transmitting beam of the uplink channel.

7. The method according to claim 1, characterized in that In the case where the first channel is an uplink channel, the method further includes: When the first SSB is the QCL source signal of the SRS resource indicated in the TCI state of the uplink channel or the space-related information, the terminal device uses the receiving beam of the first SSB as the transmitting beam of the SRS resource, and uses the transmitting beam of the SRS resource as the transmitting beam of the uplink channel.

8. The method according to any one of claims 1, 5 to 7, characterized in that: The uplink channel includes at least one of the following: Physical uplink control channel PUCCH, physical uplink shared channel PUSCH.

9. The method according to any one of claims 1, 5 to 7, characterized in that: The uplink channel is a physical uplink shared channel PUSCH, and the TCI state or space related information is indicated by a DCI that schedules the PUSCH, or the TCI state or space related information is indicated by a MAC CE signaling.

10. The method according to claim 1, characterized in that In the case where the first channel is a PUSCH, the method further includes: The terminal device uses the receiving beam of the first SSB as the transmitting beam of the first SRS resource, and uses the transmitting beam of the first SRS resource as the transmitting beam of the PUSCH.

11. The method according to claim 1, characterized in that The cell identifier is a cell identifier carried by the primary synchronization signal PSS and the secondary synchronization signal SSS in the first SSB.

12. The method according to claim 1, characterized in that The information field used to indicate that the first SSB includes the cell identifier carried by the first SSB.

13. The method according to claim 1, characterized in that The terminal device determines, according to the cell identifier carried by the first SSB, an initialization value of a scrambling sequence of the first channel, including: When the cell identifier is different from the cell identifier of the serving cell, the terminal device determines an initialization value of the scrambling sequence of the first channel according to the cell identifier and the cell identifier of the serving cell.

14. A terminal device, characterized in that: include: a processing unit, configured to determine an initialization value of a scrambling sequence of a first channel according to a cell identifier carried by a first synchronization signal block SSB, wherein the first SSB is used to obtain a transmit beam or a receive beam of the first channel; The processing unit is further configured to generate a scrambling sequence for the first channel according to an initialization value of the scrambling sequence; Wherein, when the first channel is a downlink channel, the first SSB is the SSB indicated in the transmission configuration indication TCI state of the downlink channel, or the first SSB is a quasi-co-located QCL source signal of a channel state information reference signal CSI-RS resource indicated in the TCI state of the downlink channel; or, In the case where the first channel is an uplink channel, the first SSB is the TCI state of the uplink channel or the SSB indicated in the space-related information, or the first SSB is the QCL source signal of the CSI-RS resource indicated in the TCI state of the uplink channel or the space-related information, or the first SSB is the QCL source signal of the sounding reference signal SRS resource indicated in the TCI state of the uplink channel or the space-related information; or, In the case that the first channel is a physical uplink shared channel PUSCH, the first SSB is an SSB indicated in a TCI state or space-related information of a first SRS resource, and the first SRS resource is an SRS resource indicated by an SRS resource included in the scheduling information of the PUSCH.

15. The terminal device according to claim 14, characterized in that: When the first channel is a downlink channel and the first SSB is the SSB indicated in the TCI state of the downlink channel, the processing unit is further used to use the receiving beam of the first SSB as the receiving beam of the downlink channel.

16. The terminal device according to claim 14, characterized in that: When the first channel is a downlink channel and the first SSB is the QCL source signal of the CSI-RS resource indicated in the TCI state of the downlink channel, the processing unit is also used to use the receiving beam of the first SSB as the receiving beam of the CSI-RS resource, and use the receiving beam of the CSI-RS resource as the receiving beam of the downlink channel.

17. The terminal device according to any one of claims 14 to 16, characterized in that: The downlink channel includes at least one of the following: Physical downlink control channel PDCCH, physical downlink shared channel PDSCH.

18. The terminal device according to claim 14, characterized in that: When the first channel is an uplink channel and the first SSB is the SSB indicated in the TCI state or space-related information of the uplink channel, the processing unit is further used to use the receiving beam of the first SSB as the transmitting beam of the uplink channel.

19. The terminal device according to claim 14, characterized in that: When the first channel is an uplink channel and the first SSB is a QCL source signal of a CSI-RS resource indicated in the TCI state or space-related information of the uplink channel, the processing unit is further used to use the receiving beam of the first SSB as the receiving beam of the CSI-RS resource, and use the receiving beam of the CSI-RS resource as the transmitting beam of the uplink channel.

20. The terminal device according to claim 14, characterized in that: When the first channel is an uplink channel and the first SSB is a QCL source signal of an SRS resource indicated in the TCI state or space-related information of the uplink channel, the processing unit is further used to use the receiving beam of the first SSB as the transmitting beam of the SRS resource, and to use the transmitting beam of the SRS resource as the transmitting beam of the uplink channel.

21. The terminal device according to any one of claims 14, 18 to 20, characterized in that: The uplink channel includes at least one of the following: Physical uplink control channel PUCCH, physical uplink shared channel PUSCH.

22. The terminal device according to any one of claims 14, 18 to 20, characterized in that: The uplink channel is a physical uplink shared channel PUSCH, and the TCI state or space related information is indicated by a DCI that schedules the PUSCH, or the TCI state or space related information is indicated by a MAC CE signaling.

23. The terminal device according to claim 14, characterized in that: When the first channel is PUSCH, the processing unit is further used to use the receiving beam of the first SSB as the transmitting beam of the first SRS resource, and use the transmitting beam of the first SRS resource as the transmitting beam of the PUSCH.

24. The terminal device according to claim 14, characterized in that: The cell identifier is a cell identifier carried by the primary synchronization signal PSS and the secondary synchronization signal SSS in the first SSB.

25. The terminal device according to claim 14, characterized in that: The information field used to indicate that the first SSB includes the cell identifier carried by the first SSB.

26. The terminal device according to claim 14, characterized in that: The processing unit is specifically used for: When the cell identifier is different from the cell identifier of the serving cell, an initialization value of the scrambling sequence of the first channel is determined according to the cell identifier and the cell identifier of the serving cell.

27. A terminal device, characterized in that: include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to any one of claims 1 to 13.

28. A chip, characterized in that: include: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 13.

29. A computer-readable storage medium, characterized in that: Used to store a computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1 to 13.

30. A computer program product, characterized in that The method comprises computer program instructions which cause a computer to execute the method as claimed in any one of claims 1 to 13.

Images