Signal processing methods, apparatus, terminal and network side device

Abstract

The present application belongs to the technical field of communications. Disclosed are signal processing methods, an apparatus, a terminal, and a network side device. A signal processing method in the embodiments of the present application comprises: a terminal executes a first operation, the first operation comprising at least one of the following: sending a first signal to a network side device, at least one of a sending resource, a sending beam, and sending power for the first signal being associated with first downlink signal combination information; and, on the basis of first QCL information, receiving a second signal sent by the network side device, the first QCL information being associated with the first downlink signal combination information.

Description

Signal processing method and device, terminal and network side equipment

[0001] Cross-reference to Related Applications

[0002] This application claims priority to the Chinese patent application No. 202411363612.7, filed on September 27, 2024, and entitled "Signal processing method and device, terminal and network side equipment", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application belongs to the field of communication technology, and particularly relates to a signal processing method, device, terminal and network side equipment. BACKGROUND

[0004] In related technologies, the transmission signal of the random access process of the terminal is quasi co-located (QCL) with a certain synchronization signal block (SSB), and the transmission power of the uplink signal is calculated based on a certain SSB. In a cell-free network, due to dense deployment of transmit / receive points (TRPs), in some scenarios, the terminal may receive or detect multiple downlink signals (such as SSB signals), and the terminal can still only send an uplink signal based on one of the downlink signals. The terminal cannot fully utilize multiple downlink signals to further improve the reliability of access and the performance of uplink signal transmission. Or in some scenarios, when the terminal needs to trigger signal transmission within the coverage range of multiple downlink signals, the terminal needs to perform multiple signal transmissions, resulting in large terminal resource overhead and transmission energy consumption. SUMMARY

[0005] Embodiments of the present application provide a signal processing method, device, terminal and network side equipment, which can solve the problem that the terminal cannot fully utilize multiple downlink signals in related technologies, resulting in poor reliability of the terminal in the random access process, and the terminal needs to perform multiple signal transmissions, resulting in large terminal resource overhead.

[0006] In a first aspect, a signal processing method is provided, which is performed by a terminal, and the method comprises:

[0007] The terminal performs a first operation, and the first operation comprises at least one of the following:

[0008] The terminal sends a first signal to a network side equipment, and at least one of a transmission resource, a transmission beam and a transmission power of the first signal is associated with first downlink signal combination information.

[0009] receive a second signal transmitted by the network-side device based on first quasi co-located, QCL, information, the first QCL information being based on the first downlink signal combination information.

[0010] In a second aspect, a signal processing method is provided, performed by a network-side device, the method comprising:

[0011] The network-side device performs a second operation, the second operation comprising at least one of:

[0012] receive a first signal transmitted by a terminal, at least one of a reception resource, a reception beam, in which the network-side device receives the first signal, being associated with first downlink signal combination information;

[0013] transmit a second signal to the terminal based on first quasi co-located, QCL, information, the first QCL information being associated with the first downlink signal combination information.

[0014] In a third aspect, a signal processing apparatus is provided, comprising:

[0015] a first performing module configured to perform a first operation, the first operation comprising at least one of:

[0016] transmit a first signal to a network-side device, at least one of a transmission resource, a transmission beam, a transmission power, in which the first signal is transmitted, being associated with first downlink signal combination information;

[0017] receive a second signal transmitted by the network-side device based on first quasi co-located, QCL, information, the first QCL information being associated with the first downlink signal combination information.

[0018] In a fourth aspect, a signal processing apparatus is provided, comprising:

[0019] a second performing module configured to perform a second operation, the second operation comprising at least one of:

[0020] receive a first signal transmitted by a terminal, at least one of a reception resource, a reception beam, in which the apparatus receives the first signal, being associated with first downlink signal combination information;

[0021] transmit a second signal to the terminal based on first quasi co-located, QCL, information, the first QCL information being associated with the first downlink signal combination information.

[0022] In a fifth aspect, a signal processing apparatus is provided, the apparatus being configured to perform the steps of the method of the first aspect, or to implement the steps of the method of the second aspect.

[0023] In a sixth aspect, a terminal is provided, which comprises a processor and a memory, the memory storing programs or instructions executable on the processor, and the programs or instructions, when executed by the processor, implement the steps of the method according to the first aspect.

[0024] In a seventh aspect, a terminal is provided, which comprises a processor and a communication interface, wherein the communication interface is configured to perform at least one of the following:

[0025] transmitting a first signal to a network-side device, at least one of a transmission resource, a transmission beam, and a transmission power of the first signal being associated with the first downlink signal combination information;

[0026] receiving a second signal transmitted by the network-side device based on first QCL information, the first QCL information being associated with the first downlink signal combination information.

[0027] In an eighth aspect, a network-side device is provided, which comprises a processor and a memory, the memory storing programs or instructions executable on the processor, and the programs or instructions, when executed by the processor, implement the steps of the method according to the second aspect.

[0028] In a ninth aspect, a network-side device is provided, which comprises a processor and a communication interface, wherein the communication interface is configured to perform at least one of the following:

[0029] receiving a first signal transmitted by a terminal, at least one of a reception resource and a reception beam of the network-side device for receiving the first signal being associated with first downlink signal combination information;

[0030] transmitting a second signal to the terminal based on first QCL information, the first QCL information being associated with the first downlink signal combination information.

[0031] In a tenth aspect, a readable storage medium is provided, which stores programs or instructions, and the programs or instructions, when executed by a processor, implement the steps of the method according to the first aspect, or implement the steps of the method according to the second aspect.

[0032] In an eleventh aspect, a wireless communication system is provided, which comprises a terminal and a network-side device, the terminal being configured to perform the steps of the method according to the first aspect, and the network-side device being configured to perform the steps of the method according to the second aspect.

[0033] In a twelfth aspect, a chip is provided, which comprises a processor and a communication interface, the communication interface being coupled to the processor, and the processor being configured to execute programs or instructions to implement the method according to the first aspect, or implement the method according to the second aspect.

[0034] In a thirteenth aspect, a computer program / program product is provided, which is stored in a storage medium, and is executed by at least one processor to implement the method according to the first aspect, or to implement the method according to the second aspect.

[0035] In the embodiments of the present application, the terminal sends a first signal to the network side device and / or receives a second signal sent by the network side device based on first QCL information, wherein at least one of the transmission resource, the transmission beam and the transmission power of the first signal and the first QCL information are associated with the first downlink signal combination information. Therefore, when the terminal receives or detects multiple downlink signals, the terminal can determine the first signal transmission resource, the first signal transmission beam, the first signal transmission power and / or the first QCL information as a whole by regarding the multiple downlink signals or part of the multiple downlink signals as a first downlink signal combination, instead of determining based on a single downlink signal. Therefore, the terminal does not need to perform multiple first signal transmissions, which can effectively save the terminal energy consumption and resource overhead, or help the terminal to fully utilize multiple downlink signals to further improve the access reliability and uplink signal transmission performance, and help to improve the terminal communication quality and communication efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0036] FIG. 1 is a block diagram of a wireless communication system to which embodiments of the present application can be applied;

[0037] FIG. 2 is a flowchart of a signal processing method according to an embodiment of the present application;

[0038] FIG. 3a is a schematic diagram of a scenario to which a signal processing method according to an embodiment of the present application can be applied;

[0039] FIG. 3b is a schematic diagram of another scenario to which a signal processing method according to an embodiment of the present application can be applied;

[0040] FIG. 3c is a schematic diagram of a third scenario to which a signal processing method according to an embodiment of the present application can be applied;

[0041] FIG. 3d is a flowchart of a signal processing method according to another embodiment of the present application;

[0042] FIG. 3e is a flowchart of a signal processing method according to another embodiment of the present application;

[0043] FIG. 3f is a flowchart of a signal processing method according to another embodiment of the present application;

[0044] FIG. 4 is a flowchart of a signal processing method according to another embodiment of the present application;

[0045] FIG. 5 is a structural diagram of a signal processing apparatus according to an embodiment of the present application;

[0046] FIG. 6 is a structural diagram of another signal processing apparatus according to an embodiment of the present application;

[0047] FIG. 7 is a structural diagram of a communication device according to an embodiment of the present application;

[0048] FIG. 8 is a structural diagram of a terminal according to an embodiment of the present application;

[0049] FIG. 9 is a structural diagram of a network-side device according to an embodiment of the present application. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some, but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present application.

[0051] The terms "first", "second", and the like in the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second" are usually a category, and are not limited to the number of objects, for example, the first object can be one or more. In addition, "or" in the present application means at least one of the connected objects. For example, the protection scope of "A or B" at least covers three schemes, namely, scheme one: including A and not including B; scheme two: including B and not including A; scheme three: including A and B. In addition, the terms "A and / or B", "at least one of A and B", "at least one of A or B" also at least cover the above three schemes, respectively. The character " / " generally represents that the objects before and after are in an "or" relationship.

[0052] The term "indication" in the present application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). The direct indication can be understood as that the sender explicitly informs the receiver of specific information, operations to be performed or requested results, etc. in the sent indication. The indirect indication can be understood as that the receiver determines the corresponding information according to the indication sent by the sender, or judges and determines the operations to be performed or the requested results according to the judgment result.

[0053] It is worth noting that the technology described in the embodiments of the present application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th Generation (6G) communication systems. th

[0054] ​FIG. 1 shows a block diagram of a wireless communication system to which embodiments of the present application can be applied. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can be a terminal-side device such as a mobile phone, a Tablet Personal Computer, a Laptop Computer, a notebook computer, a Personal Digital Assistant (PDA), a palmtop computer, a netbook, an Ultra-mobile Personal Computer (UMPC), a Mobile Internet Device (MID), an Augmented Reality (AR) device, a Virtual Reality (VR) device, a robot, a wearable device, a flight vehicle, a Vehicle User Equipment (VUE), a shipboard device, a Pedestrian User Equipment (PUE), a smart home (a home device with a wireless communication function such as a refrigerator, a television, a washing machine, or furniture), a game console, a Personal Computer (PC), a kiosk, or a self-service machine. The wearable device includes a smart watch, a smart bracelet, a smart earphone, smart glasses, smart jewelry (a smart bracelet, a smart necklace, a smart ring, a smart necklace, a smart anklet, a smart necklace, etc.), a smart wristband, smart clothes, etc. The vehicle-mounted device can also be referred to as a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip, or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network device or a core network device. The access network device can also be referred to as a Radio Access Network (RAN) device, a radio access network function, or a radio access network unit. The access network device can include a base station, a Wireless Local Area Network (WLAN) Access Point (AP), or a Wireless Fidelity (WiFi) node, etc.The base station can be referred to as a Node B (NB), an evolved Node B (eNB), a next generation Node B (gNB), a New Radio Node B (NR Node B), an access point, a relay station (RBS), a serving base station (SBS), a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home Node B (HNB), a home evolved Node B, a transmit / receive point (TRP), or some other suitable terminology in the art, and is not limited to a particular technical terminology, provided that the same technical effect is achieved. It should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0055] The core network device can also be referred to as a core network node, a core network function, or a core network network element, etc., which includes but is not limited to at least one of the following: a mobility management entity (MME), an access and mobility management function (AMF), a session management function (SMF), a user plane function (UPF), a policy control function (PCF), a policy and charging rules function (PCRF), an edge application server discovery function (EASDF), a unified data management (UDM), a unified data repository (UDR), a home subscriber server (HSS), a centralized network configuration (CNC), a network repository function (NRF), a network exposure function (NEF), a local NEF (L-NEF), a binding support function (BSF), an application function (AF), a location management function (LMF), a gateway mobile location center (GMLC), a network data analytics function (NWDAF), etc. It should be noted that only the core network device in the NR system is taken as an example for introduction in the embodiments of the present application, and the specific type of the core network device is not limited. If the name of the core network device mentioned in the embodiments of the present application changes in the subsequent protocol version (for example, 6G), it is also within the protection scope of the present application.

[0056] Optionally, the core network device can be implemented by one or more function modules in one device, or can be implemented by multiple devices together, and the embodiments of the present application do not make a specific limitation. It can be understood that the above function modules can be network elements in a hardware device, can be software function modules running on a dedicated hardware, or can be virtualized function modules instantiated on a platform (for example, a cloud platform).

[0057] In order to better understand the technical solutions of the present application, the related concepts that may be involved in the embodiments of the present application are explained and described below.

[0058] Cell free massive MIMO network:

[0059] The cell free massive MIMO system breaks the concept of cell in the traditional massive MIMO system, and a large number of antennas are distributed on a wide area instead of being deployed at the same macro base station, and UEs are also distributed on the wide area. These antennas are called transmit-receive points (TRPs) or access points (APs), and theoretically each UE can communicate with each TRP, with the help of a front-end network and a central processing unit (CPU), a large number of geographically dispersed TRPs can jointly serve a small number of UEs, and the CPU utilizes channel statistical information to perform joint detection. It is expected to be applied to the next generation of indoor and hotspot coverage scenarios, such as smart factories, train stations, shopping centers, stadiums, subways, hospitals, community centers or university campuses, etc.

[0060] Cell search and synchronization process in NR technology:

[0061] In related 5G NR technology, in order to achieve downlink synchronization, the UE needs to obtain the frequency point of the access carrier by searching for a synchronization block (SS / PBCH Block, SSB). Because the frequency spectrum range of NR is very wide, in order to reduce the complexity of the search, the UE searches for the SSB according to a certain frequency interval specified by the protocol, which is called the synchronization raster. The UE detects the received power of the synchronization signal (SS Reference Signal Received Power, SS-RSRP) on the corresponding frequency point according to the synchronization raster, and selects any SSB whose SS-RSRP is higher than the threshold value rsrp-ThresholdSSB. By demodulating the primary synchronization signal (PSS), the secondary synchronization signal (SSS), and the physical broadcast channel (PBCH) signal in the selected SSB, the cell selection and synchronization with the base station are completed, and then the random access is performed.

[0062] Random access procedure:

[0063] In related technology, the random access procedure includes a contention-based random access procedure and a non-contention-based random access procedure.

[0064] In the contention-based 4-step random access channel (RACH) procedure, the UE first sends a message 1 (MSG1) containing a preamble to the network; after the network detects the preamble, a MSG2 / random access response (RAR) message containing the number of the preamble detected by the network and the uplink radio resource allocated to the UE to send a MSG3 is sent; after the UE receives the MSG2, it confirms that at least one of the numbers of the preambles carried in the MSG2 is consistent with the number of the preamble sent by itself, and then sends a MSG3 containing contention resolution information according to the resource indicated by the RAR; after the network receives the MSG3, a MSG4 containing contention resolution information is sent; after the UE receives the MSG4, it confirms that the resolution information is consistent with the information sent in the MSG3, and the 4-step random access is completed.

[0065] The network includes uplink grant (UL grant) information in the RAR for indicating MSG3 PUSCH scheduling information, and includes RAPID (RACH preamble ID), temporary cell radio network temporary identifier (TC-RNTI), timing advance (TA), and the like. If the network does not receive the MSG3 physical uplink shared channel (PUSCH), the network can schedule retransmission of the MSG3 PUSCH in a physical downlink control channel (PDCCH) scrambled by the TC-RNTI.

[0066] For a contention-based random access procedure, different UEs randomly select preambles for transmission, so that different UEs can select the same preamble for transmission on the same time-frequency radio resource (RACH Occasion, RO resource). This situation can be understood as preamble collision of UEs. In this case, different UEs can receive the same RAR, and then the different UEs can transmit the MSG3 PUSCH according to the scheduling information in the RAR UL grant. In Rel-15 / 16 random access, repeated transmission of the MSG3 PUSCH is not supported, and the network can only decode the PUSCH (containing contention resolution information) transmitted by one UE on one MSG3 PUSCH scheduling resource. Therefore, the network can include the contention resolution information received in the MSG3 in the MSG4. If the contention resolution information in the MSG4 received by the UE matches the contention resolution information transmitted by the UE in the MSG3 PUSCH, the UE considers that the contention resolution is successful. If the contention resolution information in the MSG4 received by the UE does not match the contention resolution information transmitted by the UE in the MSG3 PUSCH, the UE considers that the contention resolution is unsuccessful.

[0067] If the contention resolution is unsuccessful, the UE reselects a RACH transmission resource, transmits Msg1, and performs the next random access attempt.

[0068] Uplink power control:

[0069] UL power control mainly includes transmission power of the PUSCH, the physical uplink control channel (PUCCH), the sounding reference signal (SRS), and the physical random access channel (PRACH).

[0070] (1) PUSCH power control:

[0071] The above formula is the calculation formula related to PUSCH power, and the PUSCH power is determined by the minimum of the two values, wherein the meanings of some parameters are as follows:

[0072] ① i: PUSCH / PUCCH / SRS / PRACH transmission occasion i, which is determined by the slot index within the frame of the system frame number (SFN) and the first symbol S and a plurality of consecutive symbols L in the slot. Here, it corresponds to the PUSCH transmission occasion i.

[0073] ② j: parameter set configuration index.

[0074] j = 0, representing the uplink power control (PUSCH) carrying Msg3 (i.e. 4-step random access (4-step RA), also referred to as Type-1 random access in the protocol) or MsgA (i.e. 2-step random access (2-step RA), also referred to as Type-2 random access in the protocol);

[0075] j = 1, representing the UL power control (PUSCH) when ConfiguredGrantConfig is configured;

[0076] j from 2 to J is the normal power control.

[0077] ③ q d : the index of the reference signal used for downlink path loss estimation, which can be SSB or Channel State Information Reference Signal (CSI-RS).

[0078] ④ l: PUSCH power control adjustment state.

[0079] ⑤ b, f, c: parameter b corresponds to UL Bandwidth Part (BWP) index, f corresponds to carrier index, and c corresponds to serving cell index.

[0080] ⑥ P CMAX,f,c (i) subscript is f, c, corresponding to the carrier level power parameter;​

[0081] P O_PUSCH,b,f,c The subscript is b, f, c, corresponding to the power parameter at BWP level, i.e. indicating the power parameter corresponding to UL BWP index b. P O_PUSCH,b,f,c (j) is obtained by summing up P O_NOMINAL,PUSCH,f,c (j) and P O_UE_PUSCH,b,f,c (j).

[0082] When j = 0, it represents the case of Msg3 (4-step RA / Type-1 RA) or MsgA (2-step RA / Type-2 RA), wherein: P O_UE_PUSCH,b,f,c (0) = 0, P O_NOMINAL,PUSCH,f,c (0) = P O_PRE + Δ PREAMBLE,Msg3 ,

[0083] Wherein P O_PRE is indicated by the preambleReceivedTargetPower parameter, Δ PREAMBLE,Msg3 is indicated by the msg3-DeltaPreamble parameter, and the default default value is 0.

[0084] If it is two-step RACH, the power parameter corresponding to sending MsgA is: P O_UE_PUSCH,b,f,c (0) = 0, P O_NOMINAL_PUSCH,f,c (0) = P O_PRE + Δ MsgA_PUSCH ,

[0085] Wherein P O_PRE is indicated by the msgA-preambleReceivedTargetPower (if there is no msgA-preambleReceivedTargetPower, it is indicated by the preambleReceivedTargetPower) parameter, Δ MsgA_PUSCH is indicated by the msgA-DeltaPreamble parameter, and the default default value Δ MsgA_PUSCH = Δ PREAMBLE_Msg3 .

[0086] When j = 1, it represents the PUSCH power when ConfiguredGrantConfig is configured. Wherein P O_NOMINAL,PUSCH,f,c (1) is indicated by the p0-NominalWithoutGrant parameter, and the default default value P O_NOMINAL,PUSCH,f,c (1) = P O_NOMINAL,PUSCH,f,c (0); P O_UE_PUSCH,b,f,c (1) takes the value of p0 in the p0-PUSCH-Alpha in the ConfiguredGrantConfig parameter.

[0087] j∈{2,…,J-1}=S J P O_NOMINAL,PUSCH,f,c (j) is the PUSCH power control parameter for PUSCH transmission in the UL BWP b of the serving cell C at the transmission occasion i. When j = 0, P O_NOMINAL,PUSCH,f,c (j) = P O_NOMINAL,PUSCH,f,c (j) = P O_UE_PUSCH,b,f,c (j) = P

[0088] ⑧PL b,f,c (q d ) is the path loss between the UE and the gNB. It is calculated by referenceSignalPower minus the measured and higher layer filtered RSRP. The network will configure a signal to the UE for calculating the path loss. The signal can be CSI-RS or SSB. If there is no configured periodic CSI-RS reception, referenceSignalPower = ss-PBCH-Blockpower. If there is configured periodic CSI-RS, referenceSignalPower = ss-PBCH-Blockpower or powerControlOffsetSS, where the parameter powerControlOffsetSS is the power offset value of CSI-RS relative to SSB, and the default value is powerControlOffsetSS = 0.

[0089] (2) PRACH power control

[0090] The formula for calculating the PRACH transmission power is (refer to section 7.4 of the protocol 38.213): P PRACH,b,f,c (i) = min{P CMAX,f,c (i), P PRACH,target,f,c + PL b,f,c}[dBm]

[0091] Where, P CMAX,f,c (i ) ) is the maximum transmission power configured to the UE by the carrier f of the serving cell C at the transmission occasion i (the maximum UE transmission power is 23 dBm); P PRACH,target,f,c is the PRACH target received power PREAMBLE_RECEIVED_TARGET_POWER on the active UL BWP b of the carrier f on the serving cell C; PL b,f,cis the path loss of the activated UL BWP b of the carrier f on which the DL RS associated with the PRACH transmission is based on the serving cell C, and PL b,f,c is equal to referenceSignalPower (in dB) - higher layer filtered RSRP (in dBm, RRC filtered).

[0092] The initial transmission power of the UE is first related to two factors: the initial reception power (sensitivity) expected by the base station and the path loss between the base station and the UE. The base station will inform the UE in advance of the initial reception power (preamble Initial Received Target Power in LTE, preamble Received Target Power in NR) and the reference signal transmission power (reference signal power in LTE, ss PBCH-Block Power (SSB) and power Control Offset SS (for CSI-RS) in NR), and the UE can calculate the path loss (reference signal transmission power - reference signal reception power) and the initial transmission power (base station initial reception power + path loss) by combining the actual measured reference signal reception power.

[0093] In NR, due to the cancellation of CRS (reduction of always-on signal overhead), the reference signal measured by the UE is SSB or CSI-RS. In LTE, the path loss is denoted as PL c In NR, due to the introduction of the concept of bandwidth part (BWP), the path loss is denoted as PL b,f,c (b represents BWP, f represents carrier, and c represents cell).

[0094] In NR, the mechanism of MSG1 power boosting is similar to that of LTE, but there are slight differences. In NR, the PRACH (Occasion) of the UE sending MSG1 is associated with the SSB beam, and if the UE reselects the RA resource, it selects the same SSB beam or CSI-RS beam (and does not receive a notification from the bottom layer to suspend power boosting), and the retransmission of MSG1 will boost the transmission power, if the UE selects a different SSB beam or CSI-RS beam, then (this time) the transmission power will not be boosted.

[0095] The preamble of the PRACH is configured with pPRACH, target, and p0, which functions the same as alpha, which is fixed at 1. If the PRACH transmitted according to such a configuration does not receive a random access response (RAR), the UE performs power ramping until the power reaches P CMAX Or until the PRACH receives a RAR.

[0096] In a cell-free network, due to dense TRP deployment, a UE can receive multiple good SSB signals, or when SSB beams are relatively sparse, the UE detects that two adjacent SSBs are both good, and the terminal needs to calculate the transmission power of the uplink signal or determine the QCL relationship based on each SSB signal, which causes a large overhead of the terminal. To solve the above problems, the embodiments of the present application provide a signal processing method.

[0097] It should be noted that the TRP or TRP set described in the present application can be a TRP or TRP set associated with a certain specific signal, or a TRP or TRP set associated with a certain reference signal or a certain reference signal group. The TRP and the like can also be generalized as one or a group of repeaters / Timing Advance Groups (TAGs) / cells (such as Non-Terrestrial Networks (NTNs), small cells) / Integrated Access and Backhaul (IABs) / beams / QCL assumptions / Transmission Configuration Indicator states (TCI states) or other certain specific signal-associated transmission units. The TRP described in the present application can also correspond to one carrier / carrier group or one SSB / SSB group, or one Bandwidth Part (BWP) / BWP group, or one frequency resource / frequency resource group, or a certain transmission mode.

[0098] The SSB described in the present application can also be called any module containing at least one of a synchronization signal, a broadcast signal, a broadcast channel (Physical broadcast channel, PBCH), other system message downlink broadcast channels and control channels thereof. The SSB can also be other reference signals such as CSI-RS, Tracking Reference Signal (TRS), Positioning Reference Signal (PRS), Phase-tracking reference signal (PTRS), Demodulation Reference Signal (DMRS), etc.

[0099] The SSB combination described in the present application can also be called an SSB set or an SSB group, indicating a set composed of a group of SSBs. The SSBs contained in the SSB combination can be a type of SSB (for example, a certain specific scenario or an SSB meeting a certain requirement), or multiple types of SSBs, and can only contain first-level SSBs, only contain second-level SSBs, or contain both first-level SSBs and second-level SSBs.

[0100] The message 3 (Msg3) described in the present application can generally refer to all possible uplink signals sent by a terminal before successfully accessing a network and after successfully receiving a downlink signal sent by the network side for the first time, or all possible uplink signals sent in a random access process in other scenarios after successfully receiving a downlink signal sent by the network side for the first time.

[0101] The Msg4 / B associated PUCCH or Msg4 / B PUCCH described in the present application can generally refer to all possible uplink signals sent by a terminal before successfully accessing a network and after receiving (not necessarily successfully receiving) a downlink signal sent by the network side requiring the terminal to feed back an Acknowledgement (ACK) / Negative Acknowledgement (NACK), or all possible uplink signals sent in a random access process in other scenarios after receiving a downlink signal sent by the network side requiring the terminal to feed back an ACK / NACK, or a PUCCH sent on a common PUCCH resource.

[0102] The signal processing method provided by the embodiments of the present application will be described in detail in combination with the accompanying drawings and some embodiments and application scenarios.

[0103] Please refer to FIG. 2, which is a flowchart of a signal processing method provided by an embodiment of the present application, and the method is applied to a terminal. As shown in FIG. 2, the method comprises the following steps:

[0104] In step 201, the terminal performs a first operation, and the first operation comprises at least one of the following:

[0105] In step 202, the terminal sends a first signal to a network-side device, and at least one of a sending resource, a sending beam, and a sending power of the first signal is associated with first downlink signal combination information.

[0106] In step 203, the terminal receives a second signal sent by the network-side device based on first QCL information, and the first QCL information is associated with the first downlink signal combination information.

[0107] It should be noted that the first downlink signal combination in the embodiments of the present application can also be referred to as a first downlink signal set or a first downlink signal group, that is, a set composed of downlink signals. The downlink signals can include but are not limited to SSB, CSI-RS, TRS, PRS, PTRS, Demodulation Reference Signal (DMRS), and the like, and the SSB can include at least one of a synchronization signal, a broadcast signal, a PBCH, other system messages, a downlink broadcast channel, and a control channel thereof, and the like.

[0108] The first downlink signal combination information can refer to information associated with the first downlink signal combination, including but not limited to a sending beam / receiving beam of the first downlink signal combination, downlink signals included in the first downlink signal combination (that is, which downlink signals are included), measurement results of each downlink signal in the first downlink signal combination under a first measurement metric, and the like.

[0109] In some embodiments, the first operation comprises that the terminal sends a first signal to a network-side device, and at least one of a sending resource, a sending beam, and a sending power of the first signal is associated with first downlink signal combination information.

[0110] Optionally, the sending power of the first signal is determined based on the first downlink signal combination, for example, the terminal determines the sending power of the first signal according to at least one of path loss, target received power, power offset, maximum sending power, power level, and the like of the first downlink signal combination;

[0111] Optionally, the sending beam of the first signal is determined based on the first downlink signal combination, for example, the sending beam of the first signal corresponds to a receiving beam of the first downlink signal combination;

[0112] Optionally, the sending resource of the first signal is determined based on the first downlink signal combination, for example, the terminal determines the sending resource of the signal according to the resource associated with the first downlink signal combination.

[0113] In the embodiments of the present application, when the terminal receives multiple downlink signals, the terminal can determine the sending resource and / or sending beam and / or sending power of the first signal based on the first downlink signal combination including the multiple downlink signals, and send the first signal. In this way, when the terminal receives multiple downlink signals, it is not necessary to calculate the sending resource and / or sending beam and / or sending power of the first signal based on a single downlink signal, and it is not necessary to send the first signal multiple times, thereby effectively saving the energy consumption and resource overhead of the terminal and helping to improve the communication quality.

[0114] It should be noted that the multiple in the present application includes two and more than two, and the first downlink signal combination includes multiple downlink signals, that is, the first downlink signal combination includes at least two downlink signals.

[0115] Optionally, the first signal includes at least one of the following:

[0116] Physical Random Access Channel (PRACH) signal;

[0117] Physical Uplink Shared Channel (PUSCH) signal;

[0118] Physical Uplink Control Channel (PUCCH) signal;

[0119] Wake-up signal (WUS);

[0120] Sounding Reference Signal (SRS).

[0121] It should be noted that the first signal is different, and the information carried by the first signal may also be different.

[0122] For example, when the first signal is a PRACH signal, the first signal can carry Msg1 or MsgA information.

[0123] When the first signal is a PUSCH signal, the first signal can carry Msg3 or uplink data information, wherein the uplink data information includes at least one of the following: normal uplink data information, Configured Grant (CG) uplink data information, Dynamic Grant (DG) uplink data information, and uplink data information for L1 / L2-triggered Mobility (LTM).

[0124] When the first signal is a PUCCH signal, the first signal can carry Hybrid Automatic Repeat Request (HARQ) information of Msg4 or HARQ information of MsgB.

[0125] When the first signal is a WUS signal, the first signal can carry wake-up information, for example, for triggering transmission of a specific downlink signal or system message.

[0126] Optionally, in some embodiments, the first operation can include that the terminal receives a second signal sent by the network-side device based on first QCL information, wherein the first QCL information is associated with the first downlink signal combination information, for example, the first QCL information is determined based on the first downlink signal combination and / or measurement results of signals in the first downlink signal combination. In this way, compared with the related art in which QCL information is determined based on a certain downlink signal or QCL is to a certain downlink signal, the scheme provided in the embodiments of the present application enables the terminal to take multiple downlink signals as the first downlink signal combination, to determine the first QCL information based on the first downlink signal combination and / or measurement results of the first downlink signal combination, and to receive the second signal sent by the network-side device according to the first QCL information, so that the terminal can also fully utilize multiple downlink signals to further improve the reliability of access and the performance of uplink signal transmission, and help improve the communication quality.

[0127] The first QCL information includes at least one of the following: beam direction, QCL parameters (including at least one of Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameter), Transmission Configuration Indicator (TCI), TRP, and the like.

[0128] In some embodiments, the first operation can also include that the terminal sends a first signal to the network-side device, and the terminal receives a second signal sent by the network-side device based on first QCL information. The specific implementation of the two steps can be referred to the foregoing description, which will not be described here.

[0129] Optionally, the second signal comprises at least one of:

[0130] a physical downlink shared channel (PDSCH) signal;

[0131] a physical downlink control channel (PDCCH) signal;

[0132] a low power wake-up signal (LP-WUS);

[0133] a broadcast signal;

[0134] an SSB;

[0135] a CSI-RS;

[0136] a TRS.

[0137] It should be noted that when the second signal is different, the information carried by the second signal can also be different.

[0138] For example, when the second signal is a PDSCH signal, the second signal can carry Msg2, Msg4, MsgB, or paging (Paging) information.

[0139] When the second signal is a PDCCH signal, the second signal can carry downlink control information (DCI), or scheduling information or control information for scheduling Paging / Msg2 / Msg4 / MsgB.

[0140] When the second signal is a LP-WUS signal, the second signal can carry terminal wake-up information (such as for waking up the terminal to receive other downlink signals).

[0141] When the second signal is a broadcast signal, the second signal can carry system messages, such as system information block (SIB) information, including on-demand SIB information.

[0142] When the second signal is an SSB (such as an on-demand SSB, a second-level SSB, etc.), the second signal can carry sequence information required for synchronization, or system information, such as master information block (MIB) information.

[0143] When the second signal is a CSI-RS or a TRS, the second signal can carry information for channel measurement, beam management, or fine synchronization.

[0144] In the embodiments of the present application, the terminal sends a first signal to the network side device and / or receives a second signal sent by the network side device based on first QCL information, wherein at least one of the transmission resource, transmission beam, and transmission power of the first signal and the first QCL information are associated with first downlink signal combination information. Therefore, when the terminal receives or detects multiple downlink signals, the terminal can combine the multiple downlink signals or at least part of the multiple downlink signals as a first downlink signal combination, determine at least one of the transmission resource, transmission beam, and transmission power of the first signal and / or determine the first QCL information based on the first downlink signal combination as a whole, rather than based on a single downlink signal, so that the terminal does not need to perform multiple transmissions of the first signal, thereby effectively saving terminal energy consumption and resource overhead, or helping the terminal to fully utilize multiple downlink signals to further improve the reliability of access and uplink signal transmission performance, and helping to improve the terminal communication quality and communication efficiency.

[0145] Optionally, the transmission resource of the first signal includes at least one of the following:

[0146] time-frequency resource;

[0147] sequence resource;

[0148] DMRS resource;

[0149] scrambling code resource.

[0150] In the embodiments of the present application, the terminal can determine the transmission resource of the first signal based on the resource associated with the first downlink signal combination, for example, determine the time-frequency resource of the first signal according to the time-frequency resource of the first downlink signal. In this way, the terminal can quickly determine the transmission resource of the first signal based on the first downlink signal combination composed of at least part of the multiple downlink signals when receiving the multiple downlink signals, thereby fully utilizing the multiple downlink signals and helping to improve the access reliability and transmission performance of the terminal.

[0151] Optionally, in the case where the transmission power of the first signal is associated with the first downlink signal combination information, the method further includes:

[0152] the terminal determines the first information according to the first downlink signal combination, and determines the transmission power of the first signal according to the first information;

[0153] The first information includes at least one of path loss, target received power, power offset, maximum transmit power, power backoff value, power class, and transmit module information. The power class defines the maximum transmit power on a corresponding frequency band and channel bandwidth.

[0154] For example, the terminal determines the transmit module information according to the first downlink signal combination, and then determines the transmit power of the first signal according to the transmit module information. For example, the terminal determines to use a low-power module to transmit the first signal according to the first downlink signal combination, and determines the transmit power of the first signal by using the power control parameter (for example, the power offset value Δ TF and f(i, l) parameter) corresponding to the low-power module or using a new uplink transmit power calculation formula corresponding to the low-power module, so that the terminal can transmit the first signal based on the transmit power.

[0155] In the embodiments of the present application, the terminal can determine the transmit power of the first signal according to the above-mentioned first information determined based on the first downlink signal combination, so that the terminal can fully utilize multiple downlink signals to determine the transmit power and transmit the first signal, which helps the terminal to improve the transmission performance, and the terminal does not need to perform multiple signal transmissions, which helps to save terminal resource overhead and energy consumption.

[0156] Optionally, in the case that the transmit beam of the first signal is associated with the first downlink signal combination information, the first downlink signal combination information includes at least one of the following:

[0157] (1) The receive beam of the first downlink signal combination, for example, the transmit beam of the first signal corresponds to the receive beam of the first downlink signal combination, wherein the receive beam of the first downlink signal combination can also be represented as QCL parameter, transmission configuration indication (TCI), TRP, etc.

[0158] (2) The downlink signal included in the first downlink signal combination, that is, which downlink signals are included in the first downlink signal combination;

[0159] (3) The mapping relationship between the first downlink signal combination and the QCL information, which can be indicated by the network side device (such as through system information indication) or pre-defined by the protocol;

[0160] (4) measurement results of downlink signals in the first downlink signal combination, for example, a transmission beam of the first signal is determined according to a ratio of the measurement results of the downlink signals in the first downlink signal combination; the measurement results include at least one of RSRP, reference signal received quality (RSRQ), signal-to-noise and interference ratio (SINR), signal-to-noise (SNR), signal-to-interference (SIR), phase information, angle information (for example, Angle-of-Arrival (AOA)), and the like.

[0161] In the embodiments of the present application, the terminal can determine the transmission beam of the first signal based on the above manner, that is, the determination of the transmission beam of the first signal is related to the first downlink signal combination, so that the terminal can fully utilize multiple downlink signals to determine the transmission beam and transmit the first signal, which helps to improve the transmission performance of the terminal, and the terminal does not need to perform multiple signal transmissions, which helps to save terminal resource overhead and energy consumption.

[0162] Optionally, the first QCL information is associated with the first downlink signal combination information, and the method further includes at least one of the following:

[0163] The terminal determines the first QCL information based on a mapping relationship between the first downlink signal combination and the QCL information.

[0164] The terminal determines the first QCL information based on the measurement results of the downlink signals in the first downlink signal combination.

[0165] For example, the terminal determines the first QCL information based on a mapping relationship between the first downlink signal combination and the QCL information. The mapping relationship between the first downlink signal combination and the QCL information is indicated by the network side device (for example, indicated by system information) or pre-defined by a protocol. For example, the network side sets indicate to the terminal the mapping relationship between the first downlink signal combination and the QCL information, for example, indicates the mapping relationship between the first downlink signal combination and the beam direction, and then the terminal can determine the beam direction corresponding to the first downlink signal combination based on the mapping relationship indicated by the network side device, so that the terminal can receive the second signal based on the corresponding beam direction, thereby ensuring the effective reception of the second signal by the terminal, and helping to improve the communication quality between the terminal and the network side device.

[0166] Optionally, the terminal determines the first QCL information based on a size relationship of measurement results of the downlink signals in the first downlink signal combination.

[0167] The terminal determines the first QCL information based on a size relationship of measurement results of the downlink signals in the first downlink signal combination.

[0168] It should be noted that the size relationship of the measurement results of the downlink signals can be a ratio of the measurement results of the downlink signals, or a difference between the measurement results of the downlink signals, or a size order of the measurement results of the downlink signals, etc. For example, the terminal determines the first QCL information based on a ratio of the measurement results of the downlink signals in the first downlink signal combination. For example, the first QCL information can be quickly determined based on a ratio of the measurement results of two downlink signals in the first downlink signal combination, so as to ensure that the terminal can effectively receive the second signal based on the first QCL information, and help improve the communication quality between the terminal and the network side device.

[0169] Optionally, the measurement results include at least one of RSRP, RSRQ, SINR, SNR, SIR, phase information, and angle information.

[0170] In the embodiments of the present application, in the case that the terminal fails to send the first signal, the method further includes at least one of the following:

[0171] (1) The terminal performs power boosting based on the transmission power of the last time when the first signal is sent, and re-sends the first signal in the direction of the uplink transmission beam corresponding to the receiving beam of the first downlink signal combination;

[0172] (2) The terminal re-calculates the transmission power based on the first downlink signal, and re-sends the first signal on the uplink transmission beam corresponding to the receiving beam of the first downlink signal;

[0173] (3) The terminal uses the transmission power of the last time when the first signal is sent, and re-sends the first signal on the uplink transmission beam corresponding to the receiving beam of the first downlink signal;

[0174] (4) The terminal re-calculates the transmission power based on the second downlink signal combination, and re-sends the first signal;

[0175] (5) The terminal uses the transmission power of the last time based on the second downlink signal combination, and re-sends the first signal;

[0176] The second downlink signal combination is different from the first downlink signal combination, and the first downlink signal combination includes the first downlink signal. For example, the first downlink signal can be the downlink signal with the best measurement result in the first downlink signal combination.

[0177] For example, the terminal can retransmit the first signal on an uplink transmission beam corresponding to the reception beam of the second downlink signal combination, or the terminal determines the uplink beam used for retransmitting the first signal based on implementation.

[0178] Optionally, the second downlink signal combination satisfies a first condition, including at least one of the following:

[0179] The measurement result of the downlink signal in the second downlink signal combination under a first measurement metric is greater than or equal to a first preset value.

[0180] The measurement result of the downlink signal in the second downlink signal combination under a first measurement metric determines a first value, and the first value is greater than or equal to a second preset value.

[0181] The first measurement metric includes but is not limited to power, channel quality, signal-to-noise ratio, interference size, etc., and the measurement result includes but is not limited to RSRP, RSRQ, SINR, SNR, SIR, angle information, phase information, etc.

[0182] The first preset value can be specifically configured for the downlink signal in the first downlink signal combination, or be the same as the threshold value defined by a single downlink signal resource. The second preset value can be specifically configured for the downlink signal in the first downlink signal combination, or be the same as the threshold value defined by a single downlink signal resource. The first value can be a value obtained by performing function calculation on the measurement result of the downlink signal in the second downlink signal combination under the first measurement metric. The function includes but is not limited to: taking an average value, taking a median value (median), taking a maximum value, taking a minimum value, taking an arbitrary value, taking a weighted average value (weights are indicated by the network side or pre-defined by a protocol).

[0183] In the case of failure of the terminal to transmit the first signal, the terminal can retransmit the first signal based on the above-mentioned manner, thereby defining the manner in which the terminal retransmits the first signal in the scenario of the first downlink signal combination, and effectively ensuring the communication between the terminal and the network side device.

[0184] For better understanding, the signal processing method provided by the present application is specifically described below through several embodiments.

[0185] In some embodiments, the UE determines the first QCL information based on a composition of the first downlink signal combination and / or measurement results of signals in the first downlink signal combination, including at least one of:

[0186] (1) determining the first QCL information based on a mapping relationship between a pattern of the first downlink reference signal combination and the QCL information, the mapping relationship being indicated by the network (e.g., indicated by system information) or predefined by a protocol; for example, the network-side device indicates all possible downlink signal combinations and their corresponding QCL information.

[0187] For example, as shown in FIG. 3a, there are 4 SSBs and 4 SSB combination patterns, and the UE determines the associated QCL information based on the SSB index or SSB combination pattern index, and receives the second signal transmitted by the network side based on the QCL information. The association between the SSB index or SSB combination pattern index and the QCL information can be indicated by the network-side device through system information, for example, in the form of a table, as shown in Table 1 below.

[0188] Table 1. Mapping relationship between SSB or SSB combination and QCL information

[0189] For SSBs, QCL information 1-4 indicates that the second signal and SSBs #0-#3 use the same beam direction, QCL parameter, or transmission configuration indication, respectively. For SSB combinations, QCL information 5-8 can be different from QCL information 1-4, i.e., the network can define new beam direction, QCL parameter, or transmission configuration indication for each SSB combination, which corresponds to the channel information (including at least one of Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameter) associated with the SSB combination, rather than the channel information of the actual SSB used for transmission. It should be noted that FIG. 3a takes a two-dimensional SSB beam distribution as an example, and if the vertical dimension is further considered, in other embodiments, the SSB beam distribution can also be three-dimensional.

[0190] (2) determining the first QCL information based on a relationship of measurement results of signals in the first downlink signal combination.

[0191] The first QCL information includes but is not limited to Doppler shift, Doppler spread, average delay, delay spread, spatial reception parameter / beam direction, etc. The relationship of the measurement results, for example, the proportional relationship, the size relationship, etc.

[0192] For example, the first downlink signal combination is SSB#1+SSB#2, the ratio of RSRP of SSB#1 and SSB#2 measured by the UE is 1:2, then: for spatial receiving parameter / beam direction information, the angle ratio of the beam direction of the second signal to the beam direction of SSB#1 and SSB#2 is 1:2, as shown in FIG. 3b, assuming the angle of the beam direction of SSB#1 and SSB#2 is 30 degrees, then the beam direction of the second signal is between the beam direction of SSB#1 and SSB#2, and the angle to the beam direction of SSB#1 is 10 degrees, and the angle to the beam direction of SSB#2 is 20 degrees.

[0193] For Doppler shift information, the Doppler shift of the second signal is determined according to the relative speed in the beam direction of the second signal, and the beam direction of the second signal and the relative speed in the beam direction are jointly calculated from the beam direction of SSB#1 and SSB#2 and the respective Doppler shifts.

[0194] For example, referring to FIG. 3c, the Doppler shift of SSB#1 is Δf1, the Doppler shift of SSB#2 is Δf2, the angle of the beam direction of SSB#1 and SSB#2 is θ, and assuming the moving speed of the network side device relative to the UE is v, and the angle of the moving direction to the beam direction of SSB#1 is φ, then according to Δf1 and Δf2, the moving speed v of the UE and the angle φ can be jointly solved; further, the beam direction of the second signal is determined according to the ratio of the RSRP of SSB#1 and SSB#2, and then the relative speed in the beam direction of the second signal is calculated according to the moving speed v of the UE, the angle φ of the moving direction of the UE to the beam direction of SSB#1, and the angle ψ of the beam direction of the second signal to the beam direction of SSB#1 (for example, the ratio of the RSRP of SSB#1 and SSB#2 is 1:2, and ψ = θ / 3 is obtained), and then the Doppler shift Δf is obtained.

[0195] For average delay information, the average delay of the second signal is calculated by weighted average of the average delays of SSB#1 and SSB#2, and the weight values can be equal, that is, the average delay of the second signal is the average of the average delays of SSB#1 and SSB#2; or the weight values can be determined by the ratio of the RSRP of SSB#1 and SSB#2; or the weight values can be 0, that is, the average delay of the second signal is equal to one of the average delays of SSB#1 and SSB#2, for example, the maximum or minimum.

[0196] For Doppler spread information, the Doppler spread information of the second signal is synthesized from the Doppler spreads of SSB#1 and SSB#2, for example, the Doppler spread range of the second signal is the union, or the intersection, or the maximum range, or the minimum range corresponding to the Doppler spread information of the Doppler spread range of SSB#1 and SSB#2.

[0197] For the delay spread information, the delay spread information of the second signal is obtained by combining the delay spreads of SSB#1 and SSB#2. For example, the delay spread range of the second signal is the delay spread information corresponding to the union, intersection, maximum range, or minimum range of the delay spread ranges of SSB#1 and SSB#2 (such as the maximum delay spread).

[0198] In this embodiment, the terminal can determine the first QCL information based on a first downlink signal combination including multiple SSBs (i.e., the aforementioned downlink signals). This helps the terminal to face the base station with a better beam direction, thereby helping the terminal to better receive the second signal sent by the network-side device, improving the communication performance between the terminal and the network-side device. The terminal also does not need to receive signals multiple times, which helps to save terminal resource overhead and energy consumption.

[0199] Alternatively, in some implementations:

[0200] The terminal determines the downlink integrated path loss based on the pattern of the first downlink signal combination, and calculates the transmission power of the first signal based on the downlink integrated path loss.

[0201] The method for determining the downlink overall path loss includes at least one of the following:

[0202] Method 1: At least one of the maximum, minimum, median, or any value among the path losses of the downlink signals in the first downlink signal combination;

[0203] Method 2: The downlink path loss in the first downlink signal combination is calculated according to a certain predefined function, such as averaging or weighted averaging.

[0204] Method 3: The real value of the downlink composite path loss is the sum of the real values ​​of the path losses of all downlink signals in the first downlink signal combination. Correspondingly, the downlink composite path loss [dB] of the first downlink signal combination is the sum of the real values ​​of the path losses of all downlink signals in the first downlink signal combination, taken as log.

[0205] Method 4: The downlink signal measurement results in the first downlink signal combination are calculated according to a certain predefined function.

[0206] For example, the downlink signal is taken as SSB, but in this example, it can be replaced with other downlink signals (such as CSI-RS). The method for determining the downlink composite path loss is as follows: in Indicates SSB combination q d Total transmission power, Indicates SSB combination qd the integrated received RSRP, the integrated received RSRP calculation method being the square root of the sum of the received RSRP of each SSB in the SSB combination q d ; that is, the predefined function can be represented as

[0207] The above example can be used in the case where multiple TRPs in a base station or MTRP scenario adopt coherent transmission to transmit SSBs, CSI-RSs, and other signals in the first downlink signal combination. In this case, the received signal is the coherent superposition of each signal, and the downlink integrated path loss can be determined in the above manner.

[0208] In this embodiment, the terminal can determine the transmission power of the first signal according to the first downlink signal combination, without the need to calculate the transmission power for each downlink signal and transmit an uplink signal, which can effectively reduce the total power consumption, thereby helping to reduce the resource consumption and energy consumption of the terminal.

[0209] Based on the downlink integrated path loss, the calculation method of the first signal transmission power is, for example:

[0210] Alternatively, in some embodiments:

[0211] For PUSCH transmission, when transmitted based on the first downlink signal combination, the UE transmission power calculation method is:

[0212] (1) Where PL b,f,c (q d ) represents the first downlink signal combination pattern index q d corresponding downlink integrated path loss The downlink signal is, for example, an SSB synchronization signal or other downlink signals such as CSI-RS. In the following example, the integrated path loss is represented as In other examples, the SSB can be replaced by other downlink signals (such as CSI-RS).

[0213] As shown in FIG. 3a, four SSBs {#0, #1, #2, #3} are defined, and four SSB combination patterns are defined, respectively:

[0214] SSB combination pattern 1: {SSB#0, SSB#1}; SSB combination pattern 2: {SSB#1, SSB#2}; SSB combination pattern 3: {SSB#2, SSB#3}; SSB combination pattern 4: {SSB#0, SSB#3};

[0215] Then 0≤ q d <8, where 0-3 represents SSB(q d i.e. represents SSB index), 4-7 represents SSB combination (where x=q d -nrofSSB + 1 represents the index of SSB combination pattern, and nrofSSB is the total number of SSBs). It should be noted that the SSB combination pattern can also be numbered from pattern 0, corresponding to x=q d -nrofSSB.

[0216] For SSB combination pattern x, take x=1 as an example, i.e. q d =4, the method for calculating the downlink integrated path loss includes at least one of the following:

[0217] Method one: Wherein, is the maximum value of the downlink path loss of each SSB in SSB combination pattern 1; or, is the minimum value of the downlink path loss of each SSB in SSB combination pattern 1; or, is the median value of the downlink path loss of each SSB in SSB combination pattern 1; or, is the downlink path loss of any one SSB in SSB combination pattern 1;

[0218] Method two: Wherein, is the average value of the downlink path loss of all SSBs in SSB combination pattern 1, and nrofssbComb1=2 represents the number of SSBs in SSB combination pattern 1;

[0219] Method three: The downlink integrated path loss of SSB combination pattern 1 is the sum of the real values of the downlink path loss of all SSBs in the SSB combination, taking log, i.e.

[0220] Method four: The downlink integrated path loss of SSB combination pattern 1 is calculated according to a certain predefined function f(·) according to the measurement results of SSB combination, such as

[0221] (2) In particular, when j=0, it represents the power control of Msg3 or MsgA. Wherein Or

[0222] preambleReceivedTargetPower indicates the target received power of Msg3, and msgA-preambleReceivedTargetPower indicates the target received power of MsgA (when this parameter is not configured, the default value is indicated by preambleReceivedTargetPower).

[0223] msg3-DeltaPreamble indicates the power offset of Msg3 based on the first downlink signal combination (corresponding preamble).

[0224] msgA-DeltaPreamble indicates the power offset of MsgA based on the first downlink signal combination (corresponding preamble).

[0225] In this embodiment, for PUSCH transmission, when based on the first downlink signal combination, the terminal can determine the transmission power of the first signal based on the above-mentioned manner, that is, determine the transmission power of the first signal according to the first downlink signal combination, without calculating the transmission power for each downlink signal and transmitting the uplink signal, thereby helping to save terminal resource overhead and energy consumption. In addition, the terminal transmits based on the first downlink signal combination, so it does not need to send multiple signals, which also helps to save terminal resource overhead and energy consumption.

[0226] Optionally, for PUCCH transmission, such as PDCCH transmission of Msg4 HARQ or MsgB HARQ, when based on the first downlink signal combination, the UE transmission power calculation method is:

[0227] wherein, on the BWP b of the carrier f of the serving cell c, i represents the PUCCH transmission occasion, l represents the PUCCH power control adjustment state, q u represents the P O_UE_PUCCH value index, q d represents the index of the corresponding downlink signal or downlink signal combination when calculating the path loss.

[0228] For downlink signals, PL b,f,c (q d ) represents the downlink signal index q d corresponding downlink comprehensive path loss, 0 ≤ q d < Q d , wherein Qd maxNrofPUCCH-PathlossReferenceRSs;

[0229] For downlink signal combination, q(q d -Q d ) corresponds to the downlink integrated path loss, where Q d maxNrofPUCCH-PathlossReferenceRSs, maxNrofPUCCH-PathlossReferenceRSs+maxNrofPUCCH-PathlossReferenceRSCombination.

[0230] The downlink signal is, for example, a SSB synchronization signal or other downlink signals such as CSI-RS. If the UE is not provided with the pathlossReferenceRSs parameter or a dedicated higher layer parameter, the downlink path loss is calculated based on the SSB or SSB combination. The index of the SSB or SSB combination is consistent with the SSB or SSB combination index obtained by the UE to acquire the MIB information. The integrated path loss based on the SSB combination is represented as The corresponding four calculation methods are examples of the aforementioned embodiment 2-1-(1). For other parameters, refer to the relevant protocols for detailed explanations.

[0231] In this embodiment, for PUCCH transmission, when transmitted based on the first downlink signal combination, the terminal can determine the transmission power of the first signal based on the above-mentioned method, that is, determine the transmission power of the first signal according to the first downlink signal combination, without calculating the transmission power for each downlink signal and transmitting the uplink signal, thereby helping to save terminal resource overhead and energy consumption.

[0232] Optionally, for uplink SRS transmission, the UE transmission power calculation method is:

[0233] Where, on the BWP b of the carrier f of the serving cell c, i represents the SRS transmission occasion, l represents the SRS power control adjustment state, q s represents the SRS resource set index. q d represents the index of the corresponding downlink signal or downlink signal combination when calculating the path loss, which is determined by the SRS resource set q sThe parameter pathlossReferenceRS provides, or points to the index of SSB or SSB combination, or points to the index of CSI-RS resource or CSI-RS resource combination. If the UE is not provided with the pathlossReferenceRSs parameter, or the SRS-PathlossReferenceRS-Id parameter, or a dedicated high-layer parameter, the UE calculates the downlink path loss based on the SSB or SSB combination, the index of which is consistent with the SSB or SSB combination index of the MIB information obtained by the UE. Among them, the integrated path loss based on the SSB combination is represented as The corresponding four calculation method examples are described above.

[0234] In this embodiment, for uplink SRS transmission, the terminal can determine the transmission power of the first signal based on the above method, that is, determine the transmission power of the first signal according to the first downlink signal combination, without the need to calculate the power for each downlink signal, thereby helping to save terminal resource overhead and energy consumption.

[0235] Optionally, for WUS or PRACH transmission, the UE's transmission power calculation method is: PRACH,b,f,c (i) = min{P CMAX,f,c (i), P PRACH,target,f,c + PL b,f,c} [ dBm]

[0236] Wherein, on the BWP b of the carrier f of the serving cell c, i represents the transmission occasion, PL b,f,c is the path loss of the downlink signal associated with the PRACH transmission, and when the PRACH transmission is associated with a certain SSB combination, PL b,f,c is the integrated path loss of the SSB combination The method for calculating the downlink integrated path loss includes at least one of the following:

[0237] Method one: is the maximum value of the downlink path loss of each SSB in the SSB combination; or, is the minimum value of the downlink path loss of each SSB in the SSB combination; or, is the median value of the downlink path loss of each SSB in the SSB combination; or, is the downlink path loss of any one SSB in the SSB combination;

[0238] Method two: is the average value of the downlink path loss of all SSBs in the SSB combination, and nrofssbComb represents the number of SSBs in the SSB combination;

[0239] Way three: downlink integrated path loss of SSB combination Take log of the sum of all downlink path loss real values of SSB combination, that is,

[0240] Way four: downlink integrated path loss of SSB combination is calculated according to a certain predefined function f(·) of SSB measurement results, such as

[0241] In this embodiment, for WUS or PRACH transmission, the terminal can determine the transmission power of the first signal based on the above ways, that is, determine the transmission power of the first signal according to the first downlink signal combination, without calculating the transmission power for each downlink signal and sending the uplink signal, thereby helping to save terminal resource overhead and energy consumption.

[0242] Or, in some embodiments:

[0243] For example, based on SSB combination to initiate PRACH and receive Msg2, please refer to FIG. 3d.

[0244] Step 1: the terminal detects SSB, determines the first SSB combination according to the SSB measurement result, determines the first uplink transmission beam direction based on the first SSB combination, and transmits PRACH / Msg1 in the first uplink transmission beam direction;

[0245] Step 2: the terminal receives RAR / Msg2 in the time window of RAR reception based on the first QCL information associated with the first SSB;

[0246] Step 3: the terminal transmits PUSCH / Msg3 in the first uplink transmission beam direction of Msg1 based on the successful reception of RAR / Msg2 based on the first QCL information;

[0247] Step 4: the terminal receives Msg4 / RRC configuration information based on the first QCL information associated with the first SSB.

[0248] In this embodiment, in the random access process of the terminal, the terminal can determine the first uplink transmission beam direction and the first QCL information based on the first SSB combination, and initiate random access based on the first SSB combination, which helps the terminal to fully utilize multiple downlink signals to further improve the reliability of access and uplink signal transmission performance.

[0249] For example, based on SSB and SSB combination to initiate PRACH repetition, please refer to FIG. 3e.

[0250] Step 1: The terminal detects SSB, determines a first SSB combination according to the SSB measurement result, determines a first uplink transmission beam direction based on the first SSB combination, and sends PRACH / Msg1 repetition in the first uplink transmission beam direction and the uplink transmission beam direction corresponding to the N (N≥1) best SSBs in measurement result;

[0251] Step 2: The terminal receives RAR / Msg2 signals within the time window of RAR reception based on the first QCL information associated with the first SSB and the QCL information of the N best SSBs in measurement result;

[0252] Step 3: After successfully receiving RAR / Msg2, the terminal sends PUSCH / Msg3 signals in the uplink transmission beam direction corresponding to the RAR / Msg2; wherein the uplink transmission beam direction corresponding to the RAR / Msg2 can be the first uplink transmission beam direction corresponding to the first SSB combination, or the uplink transmission beam corresponding to a certain SSB in the N SSBs;

[0253] Step 4: The terminal receives Msg4 / RRC configuration information based on the QCL information associated with the RAR / Msg2.

[0254] In this embodiment, in the random access process of the terminal, the terminal can determine the first uplink transmission beam direction and the first QCL information based on the first SSB combination, and initiate random access based on the SSB and the first SSB combination, which helps the terminal to fully utilize multiple downlink signals to further improve the reliability of access and the performance of uplink signal transmission.

[0255] For example, based on the SSB to initiate PRACH, carry the SSB combination information, and receive Msg2 based on the SSB combination, please refer to FIG. 3f.

[0256] Step 1: The terminal detects SSB, selects a best SSB in measurement result or any SSB satisfying the RSRP threshold requirement, and sends PRACH / Msg1 in the uplink transmission beam direction corresponding to the SSB, carrying the information of the first SSB combination, such as the preamble associated with the first SSB combination in the RO resource associated with the SSB;

[0257] Step 2: The terminal receives RAR / Msg2 signals within the time window of RAR reception based on the first QCL information associated with the first SSB and the QCL information of the best SSB in measurement result;

[0258] Step 3: After the terminal successfully receives the RAR / Msg2, the terminal sends the PUSCH / Msg3 signal in the uplink transmission beam direction corresponding to the RAR / Msg2.

[0259] Step 4: The terminal receives the Msg4 / RRC configuration information based on the quasi co-location information associated with the RAR / Msg2.

[0260] In this embodiment, in the random access process of the terminal, the terminal can determine the first uplink transmission beam direction and the first QCL information based on the first SSB combination, and initiate PRACH based on the SSB, which helps the terminal to fully utilize multiple downlink signals to further improve the reliability of access and the performance of uplink signal transmission.

[0261] Alternatively, in some embodiments:

[0262] For example, MsgA is sent based on the SSB combination and MsgB is received.

[0263] Step 1: The terminal detects the SSB, determines the first SSB combination according to the SSB measurement result, determines the first uplink transmission beam direction based on the first SSB combination, and sends MsgA in the first uplink transmission beam direction.

[0264] Step 2: The terminal receives MsgB within the time window of RAR reception based on the first quasi co-location information associated with the first SSB.

[0265] In this embodiment, in the random access process of the terminal, the terminal can determine the first uplink transmission beam direction and the first QCL information based on the first SSB combination, and initiate PRACH based on the first SSB combination, which helps the terminal to fully utilize multiple downlink signals to further improve the reliability of access and the performance of uplink signal transmission.

[0266] For another example, MsgA repetition is sent based on the SSB and the SSB combination.

[0267] Step 1: The terminal detects the SSB, determines the first SSB combination according to the SSB measurement result, determines the first uplink transmission beam direction based on the first SSB combination, and sends MsgA repetition in the first uplink transmission beam direction and the uplink transmission beam direction corresponding to the N (N≥1) best SSBs.

[0268] Step 2: The terminal receives MsgB within the time window of RAR reception based on the first quasi co-location information associated with the first SSB and the quasi co-location information of the N best SSBs.

[0269] In the embodiment, in the random access process of the terminal, the terminal can determine the first uplink transmission beam direction and the first QCL information based on the first SSB combination, and perform the random access procedure based on the SSB and the first SSB combination, which helps the terminal to fully utilize multiple downlink signals to further improve the reliability of access and the uplink signal transmission performance.

[0270] For example, MsgA is sent based on the SSB, SSB combination information is carried, and MsgB is received based on the SSB combination.

[0271] Step 1: The terminal detects the SSB, selects a SSB with the best measurement result or any SSB satisfying the RSRP threshold requirement, and sends MsgA in the uplink transmission beam direction corresponding to the SSB, carrying the information of the first SSB combination, for example, the MsgA contains the preamble associated with the first SSB combination.

[0272] Step 2: The terminal receives MsgB based on the first QCL information associated with the first SSB and the QCL information of the SSB within the time window of RAR reception.

[0273] In the embodiment, in the random access process of the terminal, the terminal can determine the first uplink transmission beam direction and the first QCL information based on the first SSB combination, and initiate the random access procedure based on the first SSB combination, which helps the terminal to fully utilize multiple downlink signals to further improve the reliability of access and the uplink signal transmission performance.

[0274] Alternatively, in some embodiments:

[0275] If the UE sends the PRACH / Msg1 or MsgA signal in the first uplink transmission beam direction based on the first SSB combination, a conflict occurs, resulting in a failure of network side reception, and the transmission power when re-performing PRACH transmission is determined by at least one of the following methods:

[0276] Method one: still perform random access based on the first SSB combination, and perform power ramping of PRACH or MsgA according to the power ramping step indicated by powerRampingStep, that is, the PRACH or MsgA transmission power is the PRACH or MsgA transmission power of the last time + the power ramping step, until the power reaches P CMAX .

[0277] Wherein, the maximum power value P CMAXThe power value can be specifically configured for the SSB combination, or be the same as the maximum power value defined for a single SSB resource; similarly, the power boosting parameter can be specifically configured for the SSB combination, or be the same as the power boosting parameter defined for a single SSB resource.

[0278] Option 2: fallback to the SSB-based access procedure, the UE initiates random access based on the first SSB, and the PRACH or MsgA transmission power is recalculated according to the path loss of the first SSB.

[0279] Option 3: fallback to the SSB-based access procedure, the UE determines the PRACH or MsgA transmission beam based on the first SSB, and the PRACH or MsgA transmission power remains unchanged (i.e., the same as the last PRACH or MsgA transmission power based on the first SSB combination).

[0280] In this embodiment, in the case that the terminal fails to transmit the PRACH / Msg1 or MsgA signal based on the first SSB combination, the terminal can retransmit the signal based on the above-mentioned options, thereby defining a means for the terminal to retransmit the signal in the case of signal transmission failure, and effectively ensuring the transmission performance of the terminal.

[0281] Please refer to FIG. 4, which is a flowchart of a signal processing method provided by an embodiment of the present application, the method being applied to a network side device. As shown in FIG. 4, the method comprises the following steps:

[0282] Step 401: the network side device performs a second operation, the second operation comprising at least one of the following:

[0283] receiving a first signal transmitted by a terminal, at least one of a reception resource and a reception beam of the network side device receiving the first signal being associated with first downlink signal combination information;

[0284] transmitting a second signal to the terminal based on first QCL information, the first QCL information being associated with the first downlink signal combination information.

[0285] Optionally, the first signal comprises at least one of the following: a PRACH signal, a PUSCH signal, a PUCCH signal, a WUS, and an SRS.

[0286] Optionally, the reception resource comprises at least one of the following:

[0287] a time-frequency resource;

[0288] a DMRS resource;

[0289] a scrambling code resource.

[0290] Optionally, the second signal comprises at least one of the following: a PDSCH signal, a PDCCH signal, an LP-WUS, a broadcast signal, an SSB, a CSI-RS, and a TRS.

[0291] Optionally, the first QCL information is associated with the first downlink signal combination information, and the method further comprises at least one of the following:

[0292] The network-side device determines the first QCL information based on a mapping relationship between the first downlink signal combination and the QCL information.

[0293] The network-side device determines the first QCL information based on a measurement result of a downlink signal in the first downlink signal combination.

[0294] Optionally, the method further comprises:

[0295] The network-side device sends first indication information to the terminal, and the first indication information is used to indicate the mapping relationship between the first downlink signal combination and the QCL information.

[0296] It should be noted that the method provided in the embodiments of the present application is applied to a network-side device, which corresponds to the above-mentioned method embodiments applied to a terminal side. The related concepts and specific implementations involved in the embodiments of the present application can refer to the description of the above-mentioned terminal side method embodiments. To avoid repetition, they will not be described here.

[0297] In the embodiments of the present application, the network-side device receives the first signal sent by the terminal and / or sends the second signal to the terminal based on the first QCL information, wherein at least one of the reception resource and the reception beam used by the network-side device to receive the first signal and the first QCL information is associated with the first downlink signal combination information. The network-side device can determine the reception resource and / or the reception beam and / or the first QCL information as a whole based on the first downlink signal combination, without determining based on a single downlink signal, effectively saving the energy consumption and resource overhead of the network-side device, thereby helping to improve the communication efficiency and communication quality between the network-side device and the terminal.

[0298] The signal processing method provided in the embodiments of the present application can be executed by a signal processing device. In the embodiments of the present application, the signal processing device executes the signal processing method as an example to illustrate the signal processing device provided in the embodiments of the present application.

[0299] Embodiments of the present application provide a signal processing apparatus. As an example, the signal processing apparatus can be a communication device or a component in a communication device, such as a chip. The communication device can be a terminal, a network-side device, a server, or the like. For example, the terminal can include, but is not limited to, the types of terminal 11 listed above, the network-side device can include, but is not limited to, the types of network-side device 12 listed above, and embodiments of the present application do not make specific limitations.

[0300] The signal processing apparatus includes a receiving module, a sending module, and a processing module. The receiving module, the sending module, and the processing module can be implemented by software or by hardware. When implemented by hardware, the processing module can be implemented by a processor. For example, the processor can include a general-purpose processor, a special-purpose processor, or the like, such as a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), an artificial intelligent (AI) processor, a graphics processing unit (GPU), an application specific integrated circuit (ASIC), a network processor (NP), a field programmable gate array (FPGA), or other programmable logic devices, a gate circuit, a transistor, a discrete hardware component, or the like. The receiving module and the sending module can be implemented by a communication interface. The communication interface can include one or more of a transceiver, a pin, a circuit, a bus, a radio frequency unit, or the like.

[0301] Specifically, referring to FIG. 5, when the signal processing apparatus is a terminal or a component in a terminal, the signal processing apparatus 500 includes:

[0302] A first execution module 501 is configured to perform a first operation. The first operation includes at least one of the following:

[0303] The first execution module 501 is further configured to send a first signal to a network-side device. At least one of a sending resource, a sending beam, or a sending power of the first signal is associated with the first downlink signal combination information.

[0304] The first execution module 501 is further configured to receive a second signal sent by the network-side device based on first QCL information. The first QCL information is associated with the first downlink signal combination information.

[0305] It should be noted that the first execution module 501 can be a sending module for sending the first signal to the network side device and / or a receiving module for receiving the second signal sent by the network side device based on the first QCL information.

[0306] Optionally, the first signal includes at least one of the following:

[0307] A physical random access channel (PRACH) signal;

[0308] A physical uplink shared channel (PUSCH) signal;

[0309] A physical uplink control channel (PUCCH) signal;

[0310] A wake-up signal (WUS);

[0311] A sounding reference signal (SRS).

[0312] Optionally, the sending resource of the first signal includes at least one of the following:

[0313] A time-frequency resource;

[0314] A sequence resource;

[0315] A DMRS resource;

[0316] A scrambling code resource.

[0317] Optionally, the first execution module 501 is further configured to:

[0318] Determine first information according to the first downlink signal combination, and determine the sending power of the first signal according to the first information;

[0319] The first information includes at least one of the following: path loss, target receiving power, power offset, maximum sending power, power backoff value, power level, and sending module information.

[0320] Optionally, in the case where the sending beam of the first signal is associated with the first downlink signal combination information, the first downlink signal combination information includes at least one of the following:

[0321] A receiving beam of the first downlink signal combination;

[0322] A downlink signal included in the first downlink signal combination;

[0323] A mapping relationship between the first downlink signal combination and QCL information;

[0324] A measurement result of a downlink signal in the first downlink signal combination.

[0325] Optionally, the second signal comprises at least one of:

[0326] a physical downlink shared channel (PDSCH) signal;

[0327] a physical downlink control channel (PDCCH) signal;

[0328] a low power wake-up signal (LP-WUS);

[0329] a broadcast signal;

[0330] a synchronization signal block (SSB);

[0331] a channel state information reference signal (CSI-RS);

[0332] a tracking reference signal (TRS).

[0333] Optionally, the apparatus is further configured to perform at least one of:

[0334] determine the first QCL information based on a mapping relationship between the first downlink signal combination and the QCL information;

[0335] determine the first QCL information based on a measurement result of a downlink signal in the first downlink signal combination.

[0336] Optionally, the apparatus is further configured to determine the first QCL information based on a size relationship of the measurement result of the downlink signal in the first downlink signal combination.

[0337] Optionally, the measurement result comprises at least one of:

[0338] a reference signal received power (RSRP);

[0339] a reference signal received quality (RSRQ);

[0340] a signal to interference plus noise ratio (SINR);

[0341] a signal to noise ratio (SNR);

[0342] a signal to interference ratio (SIR);

[0343] phase information;

[0344] angle information.

[0345] Optionally, the mapping relationship between the first downlink signal combination and the QCL information is indicated by a network side device or predefined by a protocol.

[0346] Optionally, in a case where the first signal fails to be transmitted, the first execution module 501 is further configured to perform at least one of:

[0347] retransmit the first signal in a direction of an uplink transmission beam corresponding to a receiving beam of the first downlink signal combination based on a power boosting of a transmission power of a last time of transmitting the first signal;

[0348] retransmit the first signal in an uplink transmission beam corresponding to a receiving beam of the first downlink signal based on a re-computed transmission power of the first downlink signal;

[0349] retransmit the first signal in a direction of an uplink transmission beam corresponding to a receiving beam of the first downlink signal using a transmission power of a last time of transmitting the first signal;

[0350] retransmit the first signal based on a re-computed transmission power of the second downlink signal combination;

[0351] retransmit the first signal using a last transmission power based on the second downlink signal combination;

[0352] The first downlink signal combination includes the first downlink signal, and the second downlink signal combination is different from the first downlink signal combination.

[0353] Optionally, the second downlink signal combination satisfies a first condition, including at least one of the following:

[0354] measurement results of downlink signals in the second downlink signal combination under a first measurement metric are all greater than or equal to a first preset value;

[0355] a determined first value of measurement results of downlink signals in the second downlink signal combination under a first measurement metric is greater than or equal to a second preset value.

[0356] The signal processing apparatus provided in the embodiments of the present application can implement each process implemented by the method embodiment of FIG. 2 and achieve the same technical effects. To avoid repetition, details are not described herein.

[0357] The signal processing apparatus provided in the embodiments of the present application can transmit the first signal to the network side device and / or receive the second signal transmitted by the network side device based on the first QCL information, wherein at least one of a transmission resource, a transmission beam, and a transmission power of the first signal and the first QCL information are associated with the first downlink signal combination information. Thus, the apparatus can determine at least one of the transmission resource, the transmission beam, and the transmission power of the first signal and / or determine the first QCL information as a whole based on the first downlink signal combination, without determining based on a single downlink signal, which can effectively save energy consumption and resource overhead, or help the apparatus make full use of multiple downlink signals to further improve the reliability of access and uplink signal transmission performance, and help improve the communication quality and communication efficiency of the apparatus.

[0358] Referring to FIG. 6, when the signal processing apparatus is a network-side device or a component in the network-side device, the signal processing apparatus 600 includes:

[0359] a second execution module 601, configured to perform a second operation, the second operation including at least one of the following:

[0360] receive a first signal sent by a terminal, at least one of a reception resource and a reception beam of the apparatus receiving the first signal being associated with first downlink signal combination information;

[0361] send a second signal to the terminal based on first QCL information, the first QCL information being associated with the first downlink signal combination information.

[0362] It should be noted that the second execution module 601 can be a sending module and / or a receiving module, the sending module being configured to send the second signal to the terminal, and the receiving module being configured to receive the first signal sent by the terminal.

[0363] Optionally, the first signal includes at least one of the following: a PRACH signal, a PUSCH signal, a PUCCH signal, a WUS, and an SRS.

[0364] Optionally, the reception resource includes at least one of the following:

[0365] a time-frequency resource;

[0366] a DMRS resource;

[0367] a scrambling resource.

[0368] Optionally, the second signal includes at least one of the following: a PDSCH signal, a PDCCH signal, an LP-WUS, a broadcast signal, an SSB, a CSI-RS, and a TRS.

[0369] Optionally, the first QCL information is associated with the first downlink signal combination information, and the apparatus is further configured to at least one of the following:

[0370] determine the first QCL information based on a mapping relationship between the first downlink signal combination and QCL information;

[0371] determine the first QCL information based on a measurement result of a downlink signal in the first downlink signal combination.

[0372] Optionally, the apparatus is further configured to:

[0373] send first indication information to the terminal, the first indication information being used to indicate the mapping relationship between the first downlink signal combination and QCL information.

[0374] The signal processing apparatus 600 provided by the embodiments of the present application can realize each process of the method embodiments of FIG. 4 and achieve the same technical effects. To avoid repetition, details are not described herein.

[0375] As shown in FIG. 7, the embodiments of the present application further provide a communication device 700, which includes a processor 701 and a memory 702, and the memory 702 stores programs or instructions executable on the processor 701. For example, when the communication device 700 is a terminal, the programs or instructions are executed by the processor 701 to realize each step of the signal processing method embodiments of FIG. 2 and achieve the same technical effects. When the communication device 700 is a network side device, the programs or instructions are executed by the processor 701 to realize each step of the signal processing method embodiments of FIG. 4 and achieve the same technical effects. To avoid repetition, details are not described herein.

[0376] The embodiments of the present application further provide a terminal, which includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run programs or instructions to realize the steps in the method embodiments of FIG. 2. The terminal embodiments correspond to the terminal side method embodiments described above, and each implementation process and implementation manner of the method embodiments can be applied to the terminal embodiments and achieve the same technical effects. The terminal can be the signal processing apparatus shown in FIG. 5. Specifically, FIG. 8 is a schematic diagram of a hardware structure of a terminal according to an embodiment of the present application.

[0377] The terminal 800 includes, but is not limited to, at least part of the following components: a radio frequency unit 801, a network module 802, an audio output unit 803, an input unit 804, a sensor 805, a display unit 806, a user input unit 807, an interface unit 808, a memory 809, and a processor 810, etc.

[0378] Those skilled in the art can understand that the terminal 800 can further include a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected to the processor 810 through a power management system, so as to realize functions such as power management, discharge management and power consumption management through the power management system. The terminal structure shown in FIG. 8 does not constitute a limitation on the terminal, and the terminal can include more or fewer components than those shown, or combine certain components, or different component arrangements, which are not described herein.

[0379] It should be understood that in the embodiments of the present application, the input unit 804 can include a graphics processor 8041 and a microphone 8042, and the graphics processor 8041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 806 can include a display panel 8061, which can be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 807 includes at least one of a touch panel 8071 and other input devices 8072. The touch panel 8071 is also called a touch screen. The touch panel 8071 can include two parts of a touch detection device and a touch controller. The other input devices 8072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), a trackball, a mouse, a joystick, and the like, which will not be described here.

[0380] In the embodiments of the present application, after the radio frequency unit 801 receives the downlink data from the network side device, it can be transmitted to the processor 810 for processing. In addition, the radio frequency unit 801 can send uplink data to the network side device. Generally, the radio frequency unit 801 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0381] The memory 809 can be used to store software programs or instructions and various data. The memory 809 can mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area can store an operating system, application programs or instructions required by at least one function (such as a sound playing function, an image playing function, etc.), and the like. In addition, the memory 809 can include a volatile memory or a non-volatile memory. The non-volatile memory can be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a Random Access Memory (RAM), a Static RAM (SRAM), a Dynamic RAM (DRAM), a Synchronous DRAM (SDRAM), a Double Data Rate SDRAM (DDR SDRAM), an Enhanced SDRAM (ESDRAM), a Synch link DRAM (SLDRAM), and a Direct Rambus RAM (DRRAM). The memory 809 in the embodiments of the present application includes but is not limited to these and any other suitable types of memory.

[0382] The processor 810 can include one or more processing units; optionally, the processor 810 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and an application program, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 810.

[0383] The radio frequency unit 801 is configured to perform at least one of the following:

[0384] The radio frequency unit 801 is configured to perform at least one of the following:

[0385] The radio frequency unit 801 is configured to perform at least one of the following:

[0386] It should be noted that the terminal provided by the embodiments of the present application can implement all processes of the method embodiments described in FIG. 2 and achieve the same or corresponding technical effects. To avoid repetition, details are not described herein.

[0387] The embodiments of the present application also provide a network side device, which comprises a processor and a communication interface, the communication interface is coupled with the processor, and the processor is configured to run programs or instructions to implement the steps of the method embodiments shown in FIG. 4. The network side device embodiments correspond to the network side device method embodiments described above. Each implementation process and implementation manner of the method embodiments described above can be applied to the network side device embodiments, and the same technical effects can be achieved.

[0388] Specifically, the embodiments of the present application also provide a network side device, which can be the signal processing apparatus shown in FIG. 6. As shown in FIG. 9, the network side device 900 comprises an antenna 91, a radio frequency device 92, a baseband device 93, a processor 94 and a memory 95. The antenna 91 is connected with the radio frequency device 92. In the uplink direction, the radio frequency device 92 receives information through the antenna 91 and sends the received information to the baseband device 93 for processing. In the downlink direction, the baseband device 93 processes the information to be sent and sends it to the radio frequency device 92. The radio frequency device 92 processes the received information and sends it out through the antenna 91.

[0389] The method performed by the network side device in the above embodiments can be implemented in the baseband device 93, which comprises a baseband processor.

[0390] The baseband device 93 may, for example, comprise at least one baseband board, which is provided with a plurality of chips, as shown in FIG. 9. One of the chips is, for example, a baseband processor, which is connected with the memory 95 through a bus interface to call programs in the memory 95 and perform the network device operations shown in the above method embodiments.

[0391] The network side device may, for example, further comprise a network interface 96, which is, for example, a common public radio interface (CPRI).

[0392] Specifically, the network side device 900 of the embodiments of the present application further comprises instructions or programs stored in the memory 95 and executable on the processor 94. The processor 94 calls the instructions or programs in the memory 95 to perform the methods performed by the modules shown in FIG. 6 and achieve the same technical effects. To avoid repetition, details are not described herein.

[0393] The embodiment of the present application further provides a readable storage medium, and the readable storage medium stores a program or instructions, which are executed by a processor to implement the processes of the above signal processing method embodiments and achieve the same technical effects. To avoid repetition, details are not described herein.

[0394] The processor is the processor in the terminal in the above embodiments. The readable storage medium includes a computer readable storage medium, such as a computer readable only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc. In some examples, the readable storage medium can be a non-transitory readable storage medium.

[0395] The embodiment of the present application further provides a chip, which includes a processor and a communication interface. The communication interface is coupled with the processor. The processor is configured to execute a program or instructions to implement the processes of the above signal processing method embodiments and achieve the same technical effects. To avoid repetition, details are not described herein.

[0396] It should be understood that the chip mentioned in the embodiment of the present application can also be referred to as a system chip, a system chip, a chip system or a system on chip, etc.

[0397] The embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the processes of the above signal processing method embodiments and achieve the same technical effects. To avoid repetition, details are not described herein.

[0398] The embodiment of the present application further provides a communication system, which includes a terminal and a network side device. The terminal can be used to execute the steps of the above signal processing method. The network side device can be used to execute the steps of the above signal processing method.

[0399] It should be noted that, in the present document, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a", "comprising", or the like does not, without more constraints, preclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element. Furthermore, it is to be understood that the methods and apparatuses of the present application can be carried out by specific hardware, by software, or by a combination of hardware and software. It is therefore, contemplated to this patent to cover any and all modifications, variations, or equivalents that fall within the scope of the present application. Accordingly, where a concept can have been illustrated in only one of the exemplary embodiments, various aspects of the concept can be modified and / or combined to produce a variety of other embodiments that are not specifically illustrated. Thus, for purposes of describing particular embodiments, reference has been made to orientations. However, it is to be understood that the teachings of this patent are not limited in their application to any one of the mentioned orientations, but are applicable to any assembly having the features currently described or hereinafter ascertained.

[0400] From the above description of the embodiments, it is apparent that the method of the above embodiments can be realized by means of a computer software product and a general hardware platform as necessary, of course, also by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disc, optical disc, etc.), and includes a plurality of instructions for making a terminal or a network side device execute the method described in each embodiment of the present application.

[0401] The embodiments of the present application are described above in conjunction with the drawings, but the present application is not limited to the above specific embodiments, and the above specific embodiments are merely illustrative rather than restrictive, and a person of ordinary skill in the art can make many forms of embodiments under the inspiration of the present application without departing from the scope of the present application and the protection scope of the claims, and these embodiments all belong to the protection scope of the present application.

Claims

1. A signal processing method, wherein, Comprising: The terminal performs a first operation, the first operation comprising at least one of: Sending a first signal to a network side device, at least one of the sending resource, the sending beam, the sending power of the first signal being associated with the first downlink signal combination information; Receiving a second signal sent by the network side device based on the first quasi co-location (QCL) information, the first QCL information being associated with the first downlink signal combination information.

2. The method of claim 1, wherein, The first signal comprises at least one of: A physical random access channel (PRACH) signal; A physical uplink shared channel (PUSCH) signal; A physical uplink control channel (PUCCH) signal; A wake-up signal (WUS); A sounding reference signal (SRS).

3. The method of claim 1 or 2, wherein, The sending resource of the first signal comprises at least one of: A time-frequency resource; A sequence resource; A demodulation reference signal (DMRS) resource; A scrambling code resource.

4. The method of any one of claims 1-3, wherein, In the case where the sending power of the first signal is associated with the first downlink signal combination information, the method further comprises: The terminal determines first information according to the first downlink signal combination, and determines the sending power of the first signal according to the first information; Wherein, the first information comprises at least one of: path loss, target received power, power offset, maximum sending power, power backoff value, power level, and sending module information.

5. The method of any one of claims 1-4, wherein, In the case where the sending beam of the first signal is associated with the first downlink signal combination information, the first downlink signal combination information comprises at least one of: The receiving beam of the first downlink signal combination; The downlink signal included in the first downlink signal combination; The mapping relationship between the first downlink signal combination and the QCL information; The measurement result of the downlink signal in the first downlink signal combination.

6. The method of any one of claims 1-5, wherein, The second signal comprises at least one of: A physical downlink shared channel (PDSCH) signal; A physical downlink control channel (PDCCH) signal; A low-power wake-up signal (LP-WUS); A broadcast signal; A synchronization signal block (SSB); A channel state information reference signal (CSI-RS); A tracking reference signal (TRS).

7. The method of any one of claims 1-6, wherein, The first QCL information is associated with the first downlink signal combination information, and the method further comprises at least one of: The terminal determines the first QCL information based on the mapping relationship between the first downlink signal combination and the QCL information; The terminal determines the first QCL information based on the measurement result of the downlink signal in the first downlink signal combination.

8. The method of claim 7, wherein, The terminal determines the first QCL information based on the measurement result of the downlink signal in the first downlink signal combination, comprising: The terminal determines the first QCL information based on the size relationship of the measurement result of the downlink signal in the first downlink signal combination.

9. The method of claim 8, wherein, The measurement result comprises at least one of: Reference signal received power (RSRP); Reference signal received quality (RSRQ); Signal to interference plus noise ratio (SINR); Signal to noise ratio (SNR); Signal to interference ratio (SIR); Phase information; Angle information.

10. The method of claim 5 or 7, wherein, The mapping relationship between the first downlink signal combination and the QCL information is indicated by the network side device or predefined by the protocol.

11. The method of any one of claims 1-10, wherein, In the case where the terminal fails to send the first signal, the method further comprises at least one of: The terminal re-sends the first signal in the uplink transmission beam direction corresponding to the receiving beam of the first downlink signal combination based on the transmission power of the last time of sending the first signal; The terminal re-sends the first signal in the uplink transmission beam corresponding to the receiving beam of the first downlink signal based on the re-calculated transmission power of the first downlink signal; The terminal re-sends the first signal in the uplink transmission beam corresponding to the receiving beam of the first downlink signal using the transmission power of the last time of sending the first signal; The terminal re-sends the first signal based on the re-calculated transmission power of the second downlink signal combination; The terminal re-sends the first signal using the last transmission power based on the second downlink signal combination; The first downlink signal combination includes the first downlink signal, and the second downlink signal combination is different from the first downlink signal combination.

12. The method of claim 11, wherein, The second downlink signal combination satisfies a first condition, including at least one of the following: The measurement results of the downlink signals in the second downlink signal combination under a first measurement metric are all greater than or equal to a first preset value; The measurement results of the downlink signals in the second downlink signal combination under a first measurement metric determine a first value, and the first value is greater than or equal to a second preset value.

13. A signal processing method, wherein, The method further includes: The network-side device performs a second operation, which includes at least one of the following: Receiving the first signal sent by the terminal, at least one of the receiving resource, the receiving beam of the network-side device receiving the first signal is associated with the first downlink signal combination information; Sending the second signal to the terminal based on the first QCL information, the first QCL information is associated with the first downlink signal combination information.

14. The method of claim 13, wherein, The first signal includes at least one of the following: PRACH signal, PUSCH signal, PUCCH signal, WUS, SRS.

15. The method of claim 13 or 14, wherein, The receiving resource includes at least one of the following: Time-frequency resource; DMRS resource; Scrambling resource.

16. The method of any one of claims 13-15, wherein, The second signal includes at least one of the following: PDSCH signal, PDCCH signal, LP-WUS, broadcast signal, SSB, CSI-RS, TRS.

17. The method of any one of claims 13-16, wherein, The first QCL information is associated with the first downlink signal combination information, and the method further includes at least one of the following: The network-side device determines the first QCL information based on the mapping relationship between the first downlink signal combination and the QCL information; The network-side device determines the first QCL information based on the measurement results of the downlink signals in the first downlink signal combination.

18. The method of claim 17, wherein, The method further includes: The network-side device sends first indication information to the terminal, and the first indication information is used to indicate the mapping relationship between the first downlink signal combination and the QCL information.

19. A signal processing device, wherein, The first execution module is configured to perform a first operation, which includes at least one of the following: Sending the first signal to the network-side device, at least one of the transmission resource, the transmission beam, and the transmission power of the first signal is associated with the first downlink signal combination information; ​ receive a second signal sent by the network side device based on first QCL information, the first QCL information being associated with the first downlink signal combination information.

20. The apparatus of claim 19, wherein, The transmission resource of the first signal comprises at least one of: time-frequency resource; sequence resource; DMRS resource; scrambling code resource.

21. The apparatus of claim 19 or 20, wherein, In the case where the transmission power of the first signal is associated with the first downlink signal combination information, the first execution module is further configured to: determine first information according to the first downlink signal combination, and determine the transmission power of the first signal according to the first information; wherein the first information comprises at least one of: path loss, target received power, power offset, maximum transmission power, power backoff value, power level, and transmission module information.

22. The apparatus of any of claims 19-21, wherein, In the case where the transmission beam of the first signal is associated with the first downlink signal combination information, the first downlink signal combination information comprises at least one of: the reception beam of the first downlink signal combination; a downlink signal included in the first downlink signal combination; a mapping relationship between the first downlink signal combination and QCL information; a measurement result of a downlink signal in the first downlink signal combination.

23. The apparatus of any of claims 19-22, wherein, In the case where the transmission of the first signal fails, the first execution module is further configured to perform at least one of: perform power boosting based on the transmission power of the last transmission of the first signal, and retransmit the first signal in the direction of the uplink transmission beam corresponding to the reception beam of the first downlink signal combination; recompute the transmission power based on the first downlink signal, and retransmit the first signal on the uplink transmission beam corresponding to the reception beam of the first downlink signal; use the transmission power of the last transmission of the first downlink signal, and retransmit the first signal in the direction of the uplink transmission beam corresponding to the reception beam of the first downlink signal; recompute the transmission power based on the second downlink signal combination, and retransmit the first signal; use the last transmission power based on the second downlink signal combination, and retransmit the first signal; wherein the first downlink signal combination comprises the first downlink signal, and the second downlink signal combination is different from the first downlink signal combination.

24. The apparatus of claim 23, wherein, The second downlink signal combination satisfies a first condition, comprising at least one of: the measurement results of the downlink signals in the second downlink signal combination under a first measurement metric are all greater than or equal to a first preset value; the function calculation results of the measurement results of the downlink signals in the second downlink signal combination under a first measurement metric are all greater than or equal to a second preset value.

25. A signal processing device, wherein, The second execution module is configured to perform a second operation, the second operation comprising at least one of: receive a first signal sent by a terminal, at least one of the reception resource and the reception beam of the first signal received by the device being associated with first downlink signal combination information; send a second signal to the terminal based on first QCL information, the first QCL information being associated with the first downlink signal combination information. The reception resource comprises at least one of:

26. The apparatus of claim 25, wherein, time-frequency resource; DMRS resource; scrambling code resource. ​ 27. The apparatus of claim 25 or 26, wherein, The first QCL information is associated with the first downlink signal combination information, and the second execution module is further configured to perform at least one of the following: determining the first QCL information based on a mapping relationship between the first downlink signal combination and the QCL information; determining the first QCL information based on a measurement result of a downlink signal in the first downlink signal combination.

28. A terminal, wherein, A processor and a memory are included, the memory stores programs or instructions executable on the processor, and the programs or instructions are executed by the processor to implement the steps of the signal processing method according to any one of claims 1-12.

29. A network-side device, wherein, A processor and a memory are included, the memory stores programs or instructions executable on the processor, and the programs or instructions are executed by the processor to implement the steps of the signal processing method according to any one of claims 13-18.

30. A readable storage medium, wherein, The readable storage medium stores programs or instructions, and the programs or instructions are executed by the processor to implement the steps of the signal processing method according to any one of claims 1-12 or the steps of the signal processing method according to any one of claims 13-18.

31. A computer program product, wherein, The computer program product is stored in a storage medium, and the computer program product is executed by at least one processor to implement the steps of the signal processing method according to any one of claims 1-12 or the steps of the signal processing method according to any one of claims 13-18.

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