WO2022188767A1 - Method executed by user equipment, and user equipment - Google Patents

Abstract

The present invention provides an uplink signal transmitting method, a downlink signal receiving method, a random access resource configuration method, and a user equipment (UE). The uplink signal transmitting method executed by a UE comprises: determining, according to an uplink signal transmission parameter used for sending an uplink signal, a first symbol position of an OFDM symbol of the uplink signal used for transmitting the uplink signal on an uplink bandwidth; determining, according to the determined first symbol position, related OFDM symbols on a downlink bandwidth corresponding to the uplink bandwidth; and doing not receive a downlink signal of which the used OFDM symbol overlaps at least one of the determined related OFDM symbols in a time domain, and/or doing not receive the downlink signal using the determined related OFDM symbols, the uplink bandwidth doing not overlap the downlink bandwidth.

Description

Method performed by user equipment and user equipment technical field

The present invention relates to the field of wireless communication technologies, and in particular to a method performed by user equipment and corresponding user equipment. Specifically, the method performed by user equipment includes an uplink signal sending method, a downlink signal receiving method, a random access method performed by the user equipment resource allocation method.

Background technique

In the 5G/NR network, a device type with reduced capability is defined, which is used to reduce the number of antennas and bandwidth, reduce the implementation complexity of the terminal, reduce the cost, reduce the size of the device, and improve the battery life. It can be deployed. It can be used in various scenarios such as industrial sensor networks, smart city construction, industrial and agricultural video surveillance, wearable devices, and medical monitoring equipment. The introduction of this kind of equipment into the network can further enhance the flexibility of network deployment, improve productivity and efficiency, reduce costs, improve operational security, etc., and ensure that various typical scenarios have rate, reliability, and other requirements that match services.

One way to reduce the capability is to use half-duplex data transmission. The terminal or non-full-duplex capable terminal of this half-duplex data transmission can transmit data at different times on the uplink and downlink bandwidth of the cell using paired spectrum. transmission. Different from the existing full-duplex terminal, this terminal performs data transmission on the uplink bandwidth or the downlink bandwidth at different times, and does not support data transmission on the uplink and downlink bandwidths at the same time. Therefore, the network and the terminal need to coordinate and control the data transmission in different directions, so that the network and the terminal can correctly understand the transmission mode of the signal and realize the correct business process.

In addition, new requirements have put forward more requirements for network transmission, especially when terminal equipment needs to obtain and service services under the constraints of smaller size, lower processing complexity, fewer antennas, and smaller bandwidth. Matching receiving capabilities, all of which need to be improved on the existing air interface resource allocation method and channel transmission method.

SUMMARY OF THE INVENTION

In order to solve at least a part of the above problems, the present invention provides a method for transmitting uplink signals, a method for receiving downlink signals, a method for configuring random access resources, and a user equipment performed by user equipment, which can effectively avoid the lack of full-duplex capability. It can improve the service capability of the network, expand the compatibility of the network, and greatly reduce the cost of communication network deployment.

According to the present invention, a method for sending an uplink signal performed by a user equipment UE is proposed. a first symbol position; determining a related OFDM symbol on the downlink bandwidth corresponding to the uplink bandwidth according to the determined first symbol position; and not receiving the used OFDM symbol in the time domain with the determined related OFDM symbol at least one overlapping downlink signal, and/or the downlink signal is received without using the determined relevant OFDM symbol, and the uplink bandwidth and the downlink bandwidth do not overlap.

Optionally, the relevant OFDM symbols include at least one of the following: OFDM symbols in the downlink bandwidth that overlap with the uplink signal OFDM symbols in the time domain; and OFDM symbols in the downlink bandwidth that overlap in the time domain with At least one overlapping OFDM symbol among the N1 OFDM symbols before the uplink signal OFDM symbol, the N1 is a natural number, and according to the switching time of the UE from the downlink working state to the uplink working state, the UE is in A network timing offset value in the network, and at least one of the SCS used by the uplink bandwidth and the larger value of the SCS used by the downlink bandwidth are determined; the downlink bandwidth is in the time domain with the uplink signal OFDM At least one overlapping OFDM symbol among the N2 OFDM symbols after the symbol, where N2 is a natural number, and is based on the switching time of the UE from the uplink operating state to the downlink operating state, the network timing in the network where the UE is located The offset value and at least one of the larger values of the SCS used by the uplink bandwidth and the SCS used by the downlink bandwidth are determined.

Optionally, the value of N1 may include multiple N1 values, and the method further includes: selecting one of the multiple N1 values as the value of N1 according to the network timing offset time value and/or the bandwidth SCS parameter. value. In addition, the value of N2 may include multiple N2 values, and the method further includes: selecting one of the multiple N2 values as the value of N2 according to the network timing offset time value and/or the bandwidth SCS parameter.

According to another aspect of the present invention, there is also provided a method for receiving a downlink signal performed by a user equipment UE, comprising: determining, according to a downlink signal receiving parameter used for receiving the downlink signal, that the OFDM symbol of the downlink signal used for receiving the downlink signal is in a second symbol position on the downlink bandwidth; determining a related OFDM symbol in the uplink bandwidth corresponding to the downlink bandwidth according to the determined second symbol position; and not sending the used OFDM symbol in the time domain with the correlation At least one overlapping uplink signal in the OFDM symbols, and/or not using the determined relevant OFDM symbol to transmit the uplink signal, the uplink bandwidth and the downlink bandwidth do not overlap.

Optionally, the relevant OFDM symbols include at least one of the following: OFDM symbols in the uplink bandwidth that overlap with the downlink signal OFDM symbols in the time domain; At least one overlapping OFDM symbol among N2 OFDM symbols before the downlink signal OFDM symbol, N2 is a natural number, and according to the switching time of the UE from the uplink working state to the downlink working state, the network in which the UE is located determined by at least one of the network timing offset value of the uplink bandwidth and the larger value of the SCS used by the uplink bandwidth and the SCS used by the downlink bandwidth; in the downlink bandwidth, in the time domain, after the OFDM symbol of the downlink signal At least one overlapping OFDM symbol among the N1 OFDM symbols, N1 is a natural number, and is determined according to the switching time of the UE from the downlink working state to the uplink working state, and the network timing offset value in the network where the UE is located , and at least one of the larger values of the SCS used by the uplink bandwidth and the SCS used by the downlink bandwidth.

Optionally, the value of N1 may include multiple N1 values, and the method further includes: selecting one of the multiple N1 values as the value of N1 according to the network timing offset time value and/or the bandwidth SCS parameter. value. In addition, the value of N2 may include multiple N2 values, and the method further includes: selecting one of the multiple N2 values as the value of N2 according to the network timing offset time value and/or the bandwidth SCS parameter.

According to another aspect of the present invention, there is also provided a method for configuring resources for random access performed by a user equipment UE, comprising: determining effective uplink channel resources in an uplink bandwidth that can be used for sending uplink random access signals; selecting from the valid uplink channel resources to configure uplink random access channel resources for sending uplink random access signals; and at least when using the uplink random access channel resources to send the uplink random access signals , do not receive the downlink signal on the OFDM that overlaps in the time domain with the OFDM symbol used by the uplink random access channel resource, and the uplink bandwidth and the corresponding downlink bandwidth do not overlap.

Optionally, determining valid uplink channel resources available for random access includes at least one of the following: determining uplink channel resources in which the used OFDM symbol does not overlap with at least one of the OFDM symbols used by the downlink synchronization system signal is the effective uplink channel resource; the uplink channel resource in which the used OFDM symbol overlaps with at least one of the OFDM symbols used by the downlink synchronization system signal is determined as the effective uplink channel resource; the used OFDM symbol and the In the downlink bandwidth, at least one of the N1 OFDM symbols after the OFDM symbol used to receive the downlink random access signal overlaps the uplink channel resource in the time domain is not determined to be the effective uplink channel resource, N1 is a natural number, and according to The switching time of the UE from the downlink working state to the uplink working state and the network timing offset value in the network where the UE is located are determined; the used OFDM symbols are not used in the downlink bandwidth for receiving downlink random access. The uplink channel resource in which at least one of the N2 OFDM symbols before the OFDM symbol of the incoming signal overlaps in the time domain is determined as the effective uplink channel resource, N2 is a natural number, and according to the UE from the uplink operating state to the downlink operating state and the network timing offset value in the network where the UE is located.

Optionally, at least when using the uplink random access channel resource to send the uplink random access signal, do not receive a signal that overlaps with the OFDM symbol used by the uplink random access channel resource in the time domain. The downlink signal on the OFDM includes: during a period when the uplink random access signal is not sent by using the uplink random access channel resource, allowing reception in the time domain with the OFDM symbol used by the uplink random access channel resource Common downstream signals on overlapping OFDM.

Optionally, the OFDM symbol in the network where the UE is located is defined with a type, and the type includes any one of uplink, downlink and flexible, and the valid uplink channel resources that can be used for random access are determined to include the following: At least one of: determining the effective uplink channel resource according to the time slot format configured by the network device; not determining the uplink channel resource in which the used OFDM symbol is in an overlapping position with at least one of the OFDM symbols determined to be flexible in the uplink bandwidth is an effective uplink channel resource; an uplink channel resource in an overlapping position between the used OFDM symbol and at least one of the OFDM symbols determined to be downlink in the downlink bandwidth is not determined as an effective uplink channel resource.

Furthermore, according to another aspect of the present invention, a user equipment is proposed, comprising: a processor; and a memory storing instructions, wherein the instructions, when executed by the processor, execute the above-mentioned method.

According to the present invention, the uplink and downlink conflicts when terminals without full-duplex capability perform data transmission on the paired spectrum can be effectively avoided, and related service transmission can be performed, thereby improving the service capability of the network and expanding the compatibility of the network , so that the cost of communication network deployment is greatly reduced.

Description of drawings

The above and other features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, wherein:

FIG. 1 is a diagram for explaining a timing relationship between an uplink frame and a downlink frame.

FIG. 2 is a diagram for explaining the alignment relationship between uplink OFDM symbols and downlink OFDM symbols.

FIG. 3 is a flowchart for explaining a method for transmitting an uplink signal according to an embodiment of the present invention.

FIG. 4 is a schematic diagram for explaining N1 symbols before it is determined to transmit an uplink signal.

FIG. 5 is a schematic diagram for explaining N2 symbols after determining to transmit an uplink signal.

FIG. 6 is a flowchart for explaining a downlink signal receiving method according to an embodiment of the present invention.

FIG. 7 is a flowchart for explaining a method of configuring resources for random access according to one embodiment of the present invention.

FIG. 8 is a schematic diagram for explaining N1 symbols before transmission of an uplink random access signal is determined in a method of configuring resources for random access.

FIG. 9 is a schematic diagram for explaining N2 symbols after the uplink random access signal is determined to be transmitted in the method for configuring resources for random access.

FIG. 10 is a block diagram schematically showing a user equipment according to the present invention.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the present invention should not be limited to the specific embodiments described below, which are provided by way of example only to convey the scope of the subject matter to those skilled in the art. In addition, for the sake of brevity, detailed descriptions of well-known technologies not directly related to the present invention are omitted in order to avoid obscuring the understanding of the present invention.

Generally, unless a different meaning is clearly given and/or implied by the context in which the term is used, all terms used herein are to be interpreted according to their ordinary meaning in the relevant technical field. Unless expressly stated otherwise, all references to an/an/the element, device, component, component, step, etc. should be publicly construed as referring to at least one instance of that element, device, component, component, step, etc. The steps of any method disclosed herein do not have to be performed in the exact order disclosed unless a step must be explicitly described as following or before another step and/or implicitly a step must be after or before another step . Where appropriate, any feature of any embodiment disclosed herein may be applied to any other embodiment. Likewise, any advantage of any embodiment may apply to any other embodiment, and vice versa.

Hereinafter, the 5G/NR mobile communication system and its subsequent evolution versions are used as an example application environment to specifically describe various embodiments according to the present invention. However, it should be pointed out that the present invention is not limited to the following embodiments, but can be applied to more other wireless communication systems, such as communication systems after 5G, 4G mobile communication systems before 5G, 802.11 wireless networks, and the like.

Part of the terms involved in the present invention are described below. Unless otherwise specified, the terms involved in the present invention are defined here. The terms given in the present invention may adopt different naming methods in LTE, LTE-Advanced, LTE-Advanced Pro, NR and later or other communication systems, but unified terms are adopted in the present invention, and when applied to specific systems can be replaced with terms used in the corresponding system.

3GPP: 3rd Generation Partnership Project, the third generation partnership project

LTE:Long Term Evolution, long term evolution technology

NR: New Radio, New Radio, New Radio

UE: User Equipment, user equipment

eNB: evolved NodeB, evolved base station

gNB:NR base station

FR1:Frequency range 1as defined in TS 38.104, the frequency range 1 defined by TS38.104

FR2: Frequency range 2as defined in TS 38.104, the frequency range 2 defined by TS38.104

TTI:Transmission Time Interval, transmission time interval

OFDM: Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing

CP-OFDM: Cyclic Prefix Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing with Cyclic Prefix

C-RNTI: Cell Radio Network Temporary Identifier, the temporary identifier of the cell wireless network

CSI:Channel State Information, channel state information

HARQ:Hybrid Automatic Repeat Request, hybrid automatic repeat request

CSI-RS: Channel State Information Reference Signal, channel state information reference signal

PBCH: Physical broadcast channel, physical broadcast channel

PUCCH: Physical Uplink Control Channel, physical uplink control channel

PUSCH: Physical Uplink Shared Channel, physical uplink shared channel

PRACH: Physical random-access channel, physical random access channel

PDSCH: Physical downlink shared channel, physical downlink shared channel

PDCCH: Physical downlink control channel, physical downlink control channel

UL-SCH:Uplink Shared Channel, uplink shared channel

DL-SCH: Downlink Shared Channel, uplink shared channel

RACH: random-access channel, random access channel

DCI: Downlink Control Information, downlink control information

MCS: Modulation and Coding Scheme, modulation and coding scheme

RB: Resource Block, resource block

RE:Resource Element, resource unit

CRB: Common Resource Block, common resource block

CP:Cyclic Prefix, cyclic prefix

PRB: Physical Resource Block, physical resource block

VRB:Virtual resource block, virtual resource block

FDM: Frequency Division Multiplexing, frequency division multiplexing

TDD: Time Division Duplexing, time division duplexing

FDD: Frequency Division Duplexing, frequency division duplexing

SRS: Sounding Reference Signal, sounding reference signal

DMRS:Demodulation Reference Signal, demodulation reference signal

CSI-RS:Channel state information reference signal

CRC: Cyclic Redundancy Check, Cyclic Redundancy Check

SFI:Slot Format Indication, slot format indication

SIB:system information block, system information block

SIB1:System Information Block Type 1, system information block type 1

PSS:Primary Synchronization Signal, the main synchronization signal

SSS:Secondary Synchronization Signal, secondary synchronization signal

MIB:Master Information Block, the main information block

SSB: Synchronization Signal Block, synchronization system information block

BWP:BandWidth Part, bandwidth segment/part

TA: Timing Advance, uplink timing advance

RedCap Device: Reduced Capability Device

CORESET0:Control resource set, control resource set

REG:Resource Element Group, resource unit group

SCS: sub-carrier spacing, sub-carrier spacing

The following is a description of the techniques associated with the aspects of the present invention. Unless otherwise specified, the meanings of the same terms in the specific embodiments are the same as those in the related art.

It is worth noting that the user equipment and terminal equipment involved in the specification of the present invention have the same meaning, and the UE in the text may also represent a terminal, which will not be specifically distinguished and limited in the following. Similarly, a network device is a device that communicates with a terminal, including but not limited to base station devices, gNBs, eNBs, wireless APs, and the like, which will not be specifically distinguished and limited hereinafter. In the text, the base station can also be used as a form of network device implementation for description, and it can be easily replaced by other network device forms.

Cells in the network can use paired spectrum and unpaired spectrum to realize the transmission of wireless services. Cells using paired spectrums use a pair of bandwidths (or bandwidth parts) for uplink and downlink service transmission respectively, and the frequency bands occupied by the two bandwidths do not overlap, and the base station or terminal can simultaneously use the uplink bandwidth and downlink bandwidth for data transmission. Cells using unpaired spectrum use uplink and downlink bandwidths for uplink and downlink service transmission, and uplink and downlink bandwidths occupy completely overlapping or partially overlapping frequency bands, so base stations or terminals need to use different times for uplink or downlink transmission. In order to avoid the interference of signals in different directions on the same bandwidth. A cell using paired spectrum may also be generally referred to as an FDD cell, and a cell using unpaired spectrum may also generally be referred to as a TDD cell.

Devices in the network can support full-duplex service capability, that is, the capability of a base station or terminal to simultaneously receive and transmit signals. For example, on a paired spectrum, a base station or terminal uses one bandwidth for uplink data transmission, and uses another bandwidth for downlink data transmission. Devices in the network can also support non-full-duplex services, that is, the base station or terminal does not support the ability to simultaneously receive or transmit signals. A possible method is that the base station or terminal realizes the transmission of uplink and downlink data on one bandwidth by time division. For example, in a cell that uses unpaired spectrum, network equipment and terminal use different time slots according to certain configurations. Perform uplink data transmission or downlink service transmission. Another possible method is that the base station supports the full-duplex capability, and the terminal does not support the full-duplex capability. For example, in a cell using paired spectrum, the terminal uses the uplink bandwidth for uplink data transmission or downlink data at different times. Downlink data reception is performed on the bandwidth. The base station can simultaneously transmit uplink or downlink services on different bandwidths.

When a base station or terminal without full-duplex capability performs uplink or downlink services, if it is not in the same transmission state, a certain time interval needs to be reserved for the device to complete the transition of the sending and receiving state. When a non-full-duplex terminal is in a full-duplex network, the conflict between signals in different transmission directions needs to be considered. For example, when the terminal is in the receiving state on the downlink bandwidth, it cannot send uplink signals within a certain time range. When the same terminal is in the transmitting state on the uplink bandwidth, it cannot transmit the downlink signal within a certain time range.

There is a certain timing relationship between the uplink frame and the downlink frame in the network, as shown in Figure 1. The uplink frame sent by the terminal needs to be ahead of the first detection path of the relevant downlink frame determined from the reference cell by (N _TA +N _{TA_offset} )*Tc time. Where Tc is the time unit, which is 1/(4096*480) milliseconds, and the value of N _TA can be determined by the terminal according to different channels/signals or TA adjustment instructions sent by the network device. For example, take 0 for the PRACH signal or the PUSCH signal N _TA used for type2 random access. The N _{TA_offset} (timing offset parameter) is determined according to the scenario deployed by the network device or the high-level configuration parameters. For example, in the frequency band of the paired spectrum, when the NR cell does not coexist with E-UTRA or NB-IoT, the value of 25600 can be used for N _{TA_offset} , and when the NR cell coexists with E-UTRA or NB-IoT, N _{TA_offset} can be used. value of 0. The terminal may also determine the value of N _{TA_offset} by receiving a high-layer signaling indication. For example, N _{TA_offset} may take a value of 25600, N _{TA_offset} may take a value of 39936, and N _{TA_offset} may take other values, which do not affect the essence of the present invention.

On the other hand, the network equipment may configure various channels/signals in the serving cell for various functions. For example, the network device sends SSB signals according to a certain configuration on the downlink bandwidth for the terminal to receive synchronization signals and broadcast signals. The network device may also send a PDCCH channel to indicate a certain command to the terminal or perform uplink or downlink data transmission. The network device can also send other downlink channels/signals, such as CSI-RS, PTRS and other signals for different service functions. The network device also configures different service channels in the uplink for performing the uplink service. For example, the network configures a PRACH channel for the terminal to send a random access channel. The network device can also configure the PUSCH channel for data transmission. There are other uplink channels/signals such as PUCCH, SRS, etc. If the terminal working on the paired spectrum does not have the full-duplex capability, it can only be in uplink or downlink or other states at one point in time. If the uplink and downlink signals configured by the network device overlap in time, the terminal cannot process the uplink and downlink signals, so a conflict of the uplink and downlink signals occurs.

A terminal without full-duplex capability can only be in uplink or downlink or other states at one time, so it takes a certain amount of time for the terminal to switch from uplink to downlink or from downlink to uplink. For example, in an NR network, the maximum time required for a terminal without full-duplex capability to switch from uplink to downlink is T _TX-RX =25600Tc, where Tc is a time unit. That is to say, within a time not greater than T _TX-RX , the terminal can complete one state transition, switching from the state of signaling to the state of receiving signals. Similarly, the maximum time for a terminal without full-duplex capability in an NR network to switch from downlink to uplink is T _RX-TX =25600Tc, and the terminal can switch from receiving a signal to sending a signal within this time. In an actual network, other values may be selected for the maximum switching time from uplink to downlink or from downlink to uplink, which does not affect the method in the present invention.

The network device can also define the type or state of the symbol by configuring the signaling method, so that the terminal can know the state of each symbol, so as to correctly handle the relationship between the various signals. For example, the network device may indicate the state of the symbol through a high-level configuration, for example, the network device may indicate the symbol state through an uplink and downlink configuration parameter. For unpaired spectrum cells, the network device indicates that the symbols on the bandwidth are uplink, downlink or flexible through the uplink and downlink configuration parameters. For paired spectrum cells, the network device can also indicate that the uplink bandwidth or the symbols on the downlink bandwidth are uplink, downlink or flexible through high-layer uplink and downlink configuration parameters. For example, the network device may indicate that part of the symbols of the time slot in the uplink bandwidth are uplink, and another part of the symbols are flexible. The network device may also indicate that some symbols of the time slots in the downlink bandwidth are downlink, and another part of the symbols are flexible. Similarly, the network device can also indicate the status of the symbol through physical layer signaling. For example, the network device indicates the state of each symbol on each time slot in a period of time or period through DCI signaling. The network device may indicate that part of the symbols of the time slots in the uplink bandwidth are uplink, and another part of the symbols are flexible. The network device may also indicate that some symbols of the time slot in the downlink bandwidth are downlink, and another part of the symbols are flexible. Higher layer signaling and physical layer signaling can be combined to indicate symbol status over the bandwidth.

The network device configures PRACH resources for random access procedures. The PRACH resource configured by the network device may be associated with the SSB sequence number, which is used to indicate the beam sequence number corresponding to the PRACH resource. The terminal can report the beam information where the terminal is located by selecting PRACH resources and sending related PRACH signals.

A unit for characterizing time-frequency resources in the network is a time slot, and a time slot contains 14 (Normal CP scenario (normal CP)) or 12 (Extended CP scenario (extended normal CP)) OFDM symbols (hereinafter, sometimes also called symbols). The resources within a time slot can be further divided into resource blocks and resource units. The resource block RB can be defined in the frequency domain as

consecutive sub-carriers, eg, for a sub-carrier spacing (SCS) of 15 kHz, the RB is 180 kHz in the frequency domain. For a subcarrier spacing of 15 kHz×2 ^μ , the resource element RE represents 1 subcarrier in the frequency domain and 1 OFDM symbol in the time domain. μ can take an integer value from 0 to 4 under different configurations. OFDM symbols with different subcarrier parameters have different symbol lengths in the time domain. OFDM symbols using different subcarrier parameters on the same or different bandwidths can be aligned on a frame or slot basis.

For example, using the normal CP (normal CP) SCS configuration of 15kHz, each frame contains 10 time slots, each time slot contains 14 symbols, and these symbols can be numbered 0-139. The SCS of the normal CP is a 30kHz configuration, each frame contains 20 time slots, and each slot (time slot) contains 14 symbols, which can be numbered 0-279. A 15kHz symbol using the same CP type can be aligned to two 30kHz symbols in the time domain, then a 15kHz symbol in a frame can be aligned with a 30k symbol in the same frame one by one. Similarly, two consecutive 30k symbols can be aligned to one 15k symbol. Alignment can be obtained similarly using the notation of other SCS parameters.

As shown in Fig. 2, the upstream bandwidth and the downstream bandwidth may use the same SCS (Fig. 2 b) or different SCS (Fig. 2 a). When the same SCS is used, the symbol sequence numbers of the uplink and downlink bandwidths are the same, and the same symbol position and length on the downlink bandwidth can be determined according to the symbol position and length of the uplink signal. Different SCSs are used. For example, the uplink bandwidth uses 15kHz SCS, the downlink bandwidth uses 30kHz SCS, and the symbol 0 of the uplink bandwidth is aligned with the symbols 0 and 1 of the downlink bandwidth. According to the symbol sequence number 0 used by the uplink signal, it can be determined that the downlink symbols overlapping with the uplink signal by at least one symbol are 0 and 1. Similarly, according to the symbol sequence number 0 used by the downlink signal, it can be determined that the uplink symbol that overlaps with the downlink signal by at least one symbol is 0. Other situations using different parameter configurations and the alignment relationship of other symbol serial numbers can be obtained by analogy, and will not be repeated.

The present invention provides a method for processing uplink and downlink conflicts in data transmission in paired frequency spectrum by a terminal without full duplex capability, which can ensure the terminal's working ability on the network, reduce network problems, improve system reliability, and efficiently Complete related business transmission functions.

FIG. 3 is a flowchart for explaining a method for transmitting an uplink signal according to an embodiment of the present invention.

Referring to FIG. 3 , in S11 , the position of the first uplink symbol on the uplink bandwidth of the uplink signal OFDM symbol used for transmitting the uplink signal is determined according to the uplink signal transmission parameter used for transmitting the uplink signal.

In S12, the relevant OFDM symbols on the downlink bandwidth corresponding to the uplink bandwidth are determined according to the determined first symbol position.

In S13, downlink signals in which the used OFDM symbols overlap with at least one of the determined relevant OFDM symbols in the time domain are not received, and/or downlink signals are not received using the determined relevant OFDM symbols. In this embodiment, the uplink bandwidth and the corresponding downlink bandwidth are paired bandwidths, that is, they do not overlap each other.

It should be noted that, in the embodiments of this specification, a certain OFDM symbol overlaps with another OFDM symbol in the time domain, which may be the overlapping of symbol sequences in the time domain, or may refer to the time occupied in the time domain Partial or complete overlap of regions. The example of determining the overlapping OFDM by the alignment of the uplink OFDM symbol and the downlink OFDM symbol described below is only an example of determining the overlapping OFDM symbols, and the present invention is not limited thereto.

As an exemplary embodiment, the terminal without full-duplex capability transmits the uplink signal on the paired spectrum according to the instruction of the network device, the terminal determines the symbol position of the uplink signal on the uplink bandwidth, and the terminal determines the The downlink signal is not received on the symbol of the downlink bandwidth corresponding to the uplink signal. Optionally, the terminal determines not to receive the downlink signal on the symbol of the downlink bandwidth that overlaps with the uplink signal. The uplink signal is one or more of PUSCH, PRACH, PUCCH, SRS and so on.

The terminal determines information such as its symbol serial number on the uplink bandwidth according to parameters such as the length of the transmitted uplink signal in the time domain, the starting symbol and the position of the time slot (corresponding to "uplink signal transmission parameters"). For example, when the terminal sends a PUSCH signal, the terminal can determine the number of symbols used by the PUSCH signal, radio frame number, time slot number and start symbol and other parameters according to the relevant configuration or authorization, and determine the symbol position of the PUSCH signal in the bandwidth. The terminal can determine the corresponding downlink symbol position according to the uplink symbol position. If the uplink bandwidth and the downlink bandwidth use the same SCS, the uplink symbol and the downlink symbol use the same sequence number, and the symbol sequence number used by the uplink signal can directly determine the symbol on the downlink bandwidth. . When the uplink bandwidth and the downlink bandwidth use different SCSs, they can be aligned according to the symbol positions corresponding to the different SCSs. For example, the SCS of 30 kHz is used for the upstream, and the SCS of 15 kHz is used for the downstream. The terminal can use the 30kHz SCS to determine the symbol sequence number used by the PUSCH in the downlink bandwidth, and the terminal determines the 15kHz symbol sequence number using the same symbol position on the downlink bandwidth according to the alignment relationship of different SCSs on the downlink bandwidth.

Optionally, the terminal does not receive downlink signals that overlap at least one symbol with N1 symbols preceding the uplink signal symbols. Optionally, these downlink signals are one of PDCCH, PDSCH, CSI-RS and the like.

For example, the timing offset value in the network uses a value of t1=25600Tc, and the terminal needs a maximum value of t2=25600Tc for downlink-to-uplink handover. In order to send the uplink signal on a given symbol, the terminal needs to switch to the uplink at least at the time of t1+t2=51200Tc before the first symbol of the uplink signal, which is about 26us. Different symbol parameters can determine different symbol lengths. When the downlink bandwidth part SCS uses 15k and the normal CP length, the length of each symbol containing the CP is about 71.3us. When the downlink bandwidth part SCS uses 30k and the normal CP length, each The length of the symbol including CP is about 35.6us. When the downlink bandwidth part SCS uses 60k and the normal CP length, the length of each symbol including the CP is about 17.8us. When the downlink bandwidth parameter SCS uses 60k and the extended CP length, the length of each symbol including the CP is about 20.8us. The terminal can determine the number of symbols of N1 according to the parameters used by the network equipment, so that the terminal has enough time to perform state transition.

Taking FIG. 4 as an example, it is assumed that the terminal determines to transmit uplink signals at symbols 0, 1, and 2. a, b, and c in FIG. 4 respectively represent scenarios in which the same SCS and different SCSs are used for uplink and downlink. The terminal does not receive downlink signals of N1 symbols before symbol 0 of the downlink bandwidth.

Optionally, the terminal determines the value of N1 according to the N _{TA_offset} value and/or the bandwidth SCS parameter used by the cell. Optionally, the value of N1 may include multiple N1 values, and the terminal may select one of the multiple N1 values as the value of N1 according to the N _{TA_offset} value and/or the bandwidth SCS parameter used by the cell. For example, the value of N1 may include a first N1 value and a second N1 value. Optionally, when N _{TA_offset} is a value greater than 0, the terminal determines that N1 uses the first N1 value. Optionally, the terminal determines that the first N1 value is 2. In this case, for different SCSs, the length can meet the time requirement of the terminal. The terminal also determines the first N1 value according to the bandwidth SCS parameter. Optionally, the first N1 value is determined to be 2 using a bandwidth of 60 kHz SCS, and the first N1 value is determined to be 1 using a bandwidth of 15k or 30 kHz SCS. Optionally, when N _{TA_offset} is a value equal to 0, the terminal determines that N1 uses the second N1 value. Optionally, the terminal determines that the second N1 value is 1 symbol. Each N1 value here is obtained according to at least one of the example timing offset parameter, SCS parameter, and handover time requirement, etc. When different values are selected for these parameters, other values may be generated, which does not affect the implementation of the present invention .

Optionally, the positions of the N1 symbols are determined according to symbols on a bandwidth with a larger SCS in the uplink and downlink bandwidths. For example, when the uplink bandwidth uses 30kHz SCS and the downlink bandwidth uses 15kHz SCS, the terminal determines to use the 30kHz SCS to determine the position of N1 symbols, on the N1 symbols calculated by the 30kHz SCS before the symbol whose downlink bandwidth is aligned with the uplink signal Downlink signals are not received.

Optionally, the terminal does not receive downlink signals that overlap with at least one symbol of N2 symbols after the symbol position of the uplink signal. Optionally, these downlink signals are one or more of PDCCH, PDSCH, CSI-RS and the like. FIG. 5 is a schematic diagram for explaining the determination of N2 symbols after uplink signal symbols. a, b, and c in FIG. 5 respectively represent scenarios in which the same SCS and different SCS are used for uplink and downlink.

For example, the timing offset value in the network uses a value of t1=25600Tc, and the terminal needs a maximum value of t2=25600Tc for uplink-to-downlink conversion. In order to receive the downlink signal after sending the uplink signal, the terminal can at most be after the last symbol of the uplink signal. The downlink signal is received after time t1-t2=0. If the timing offset value in the network uses the value of t1=0Tc, the terminal needs a maximum value of t2=25600Tc for uplink to downlink conversion. In order to receive the downlink signal after sending the uplink signal, the terminal can at most t2 after the last symbol of the uplink signal. The downlink signal is received after the time of -t1=25600Tc, which is about 13us. The terminal may determine the length of N2 symbols according to network parameters, so that the terminal has enough time to perform possible state transitions.

Optionally, the terminal determines the length of N2 symbols according to the N _{TA_offset} value used by the cell. Optionally, the value of N2 may include multiple N2 values, and the terminal may select one of the multiple N2 values as the value of N2 according to the N _{TA_offset} value and/or the bandwidth SCS parameter used by the cell. For example, the value of N2 may include a first N2 value and a second N2 value. Optionally, when N _{TA_offset} is a value greater than 0, the terminal determines that N2 uses the first N2 value. Optionally, the terminal determines that the first N2 value is 0. Optionally, when N _{TA_offset} is a value equal to 0, the terminal determines that N2 uses the second N2 value. Optionally, the terminal determines that the second N2 value is 1 symbol. Each N2 value here is obtained according to at least one of the example timing offset parameter, SCS parameter, and handover time requirement, etc. When different values are selected for these parameters, other values may be generated, which does not affect the implementation of the present invention .

Optionally, the positions of the N2 symbols are determined according to symbols on a bandwidth with a larger SCS in the uplink and downlink bandwidths. For example, when the uplink bandwidth uses 30kHz SCS and the downlink bandwidth uses 15kHz SCS, the terminal determines to use the 30kHz SCS to determine the position of N1 symbols, on the N2 symbols calculated by the 30kHz SCS after the symbol whose downlink bandwidth is aligned with the uplink signal Downlink signals are not received.

Optionally, the terminal does not receive downlink signals that conflict with the uplink transmitted signals, and the terminal does not perform HARQ feedback on the downlink signals.

FIG. 6 is a flowchart for explaining a downlink signal receiving method according to an embodiment of the present invention.

Referring to FIG. 6 , in S21, a second symbol position on the downlink bandwidth of the downlink signal OFDM symbol used for receiving the downlink signal is determined according to the downlink signal receiving parameter used for receiving the downlink signal.

In S22, the relevant OFDM symbols in the uplink bandwidth corresponding to the downlink bandwidth are determined according to the determined second symbol position.

In S23, the uplink signal in which the used OFDM symbol overlaps with at least one of the relevant OFDM symbols in the time domain is not sent, and/or the uplink signal is not sent using the determined relevant OFDM symbol. In this embodiment, the uplink bandwidth and the corresponding downlink bandwidth are paired bandwidths, that is, they do not overlap each other.

In an optional embodiment, the terminal receives the downlink signal according to the instruction of the network device. The terminal determines the position of the symbol for transmitting the downlink signal, and the terminal determines not to transmit the uplink signal on the symbol on the uplink bandwidth corresponding to the symbol for transmitting the downlink signal. Optionally, the terminal determines not to send the uplink signal on the symbol of the uplink bandwidth that overlaps with the downlink signal. Optionally, the downlink signal is one or more of PDCCH, PDSCH, CSI-RS and the like.

Illustratively, the downlink signal takes the PDSCH signal as an example. The terminal can determine its symbol sequence number on the downlink bandwidth according to the configured length of the downlink signal in the time domain and parameters such as time slot and start symbol (corresponding to the "downlink signal reception parameter"). If the uplink bandwidth and the downlink bandwidth use the same SCS, the uplink symbol and the downlink symbol use the same sequence number, and the symbol sequence number used by the downlink PDSCH signal can be directly used to determine the symbols on the uplink bandwidth. When the uplink bandwidth and the downlink bandwidth use different SCSs, the conversion can be performed according to the symbol positions corresponding to the different SCSs. For example, the SCS of 30 kHz is used for the upstream, and the SCS of 15 kHz is used for the downstream. The terminal uses the 15kHz SCS to determine the symbol sequence number used by the PDSCH in the uplink bandwidth, and the terminal determines the 30kHz symbol sequence number in the same time domain position on the uplink bandwidth according to the alignment relationship of different SCSs on the uplink bandwidth.

Optionally, the terminal determines that the uplink signal is not sent on the uplink bandwidth that overlaps with the N2 symbol before the downlink signal symbol position by at least one symbol.

For example, the network timing offset uses a value of t1=25600Tc, and the terminal needs a maximum value of t2=25600Tc for downlink-to-uplink handover. In order to receive a downlink signal on a given symbol, the terminal needs at least a The handover is performed at time t2-t1=0. The network timing offset uses a value of t1=0Tc, and the terminal needs a maximum value of t2=25600Tc for downlink to uplink handover. In order to receive a downlink signal on a given symbol, the terminal needs at least t2-t1 before the first symbol of the downlink signal =25600Tc time starts to perform handover, which is about 13us.

The terminal can determine the symbol length of N2 according to the network parameters, so that the terminal has enough time to perform possible state transitions.

Optionally, the terminal determines the symbol length of N2 according to the N _{TA_offset} value used by the cell. Optionally, when N _{TA_offset} is a value greater than 0, the terminal determines that N2 uses the first N2 value. Optionally, the terminal determines that the first N2 value is 0. Optionally, when N _{TA_offset} is a value equal to 0, the terminal determines that N2 uses the second N2 value. Optionally, the terminal determines that the second N2 value is 1.

Optionally, the positions of the N2 symbols are determined according to symbols on a bandwidth with a larger SCS in the uplink and downlink bandwidths.

Optionally, the terminal determines that the uplink signal is not sent on the uplink bandwidth that overlaps with at least one symbol of N1 symbols after the symbol position of the downlink signal transmission. Optionally, these signals are one or more of PUSCH, PRACH, PUCCH, SRS, etc.

For example, the timing offset value in the network uses a value of t1=25600Tc, and the terminal needs a maximum value of t2=25600Tc for downlink-to-uplink handover. The terminal determines to receive the downlink signal on the symbol of the downlink bandwidth, and the terminal at least needs to send it on the uplink symbol of t1+t2=51200Tc after the last symbol of the downlink signal. Different symbol parameters determine different symbol lengths. When the downlink bandwidth part SCS uses 15k and the conventional CP length, the length of each symbol including the CP is about 71.3us. When the downlink bandwidth part SCS uses 30k and the conventional CP length, each symbol The length with CP is about 35.6us. When the downlink bandwidth part SCS uses 60k and the normal CP length, the length of each symbol including the CP is about 17.8us. When the downlink bandwidth part SCS uses 60k and extended CP length, the length of each symbol including CP is about 20.8us.

Optionally, the terminal determines the value of N1 according to the N _{TA_offset} value and/or the bandwidth SCS parameter used by the cell. Optionally, when N _{TA_offset} is a value greater than 0, the terminal determines that N1 uses the first N1 value. Optionally, the terminal determines that the first N1 value is 2. In this case, for different SCSs, the length can meet the time requirement of the terminal. The terminal also determines the first N1 value according to the bandwidth SCS parameter. Optionally, the first N1 value is determined to be 2 using a bandwidth of 60 kHz SCS, and the first N1 value is determined to be 1 using a bandwidth of 15k or 30 kHz SCS. Optionally, when N _{TA_offset} is a value equal to 0, the terminal determines that N1 uses the second N1 value. Optionally, the terminal determines that the second N1 value is 1 symbol.

The descriptions about N1 and N2 in the above embodiment a can also be applied to this embodiment.

Optionally, the positions of the N1 symbols are determined according to symbols on a bandwidth with a larger SCS in the uplink and downlink bandwidths.

FIG. 7 is a flowchart for explaining a method of configuring resources for random access according to one embodiment of the present invention.

Referring to FIG. 7 , in S31, determine the effective uplink channel resources in the uplink bandwidth that can be used for sending uplink random access signals.

In S32, select from valid uplink channel resources to configure uplink random access channel resources used for sending uplink random access signals.

In S33, at least when the uplink random access channel resource is used to transmit the uplink random access signal, the downlink signal on the OFDM that overlaps in the time domain with the OFDM symbol used for the uplink random access channel resource is not received. In this embodiment, the uplink bandwidth and the corresponding downlink bandwidth are paired bandwidths, that is, they do not overlap each other.

In an optional embodiment, the network device configures the SSB signal to be sent on the symbols of the time slot, and the terminal can receive the SSB signal sent by the network device for obtaining broadcast messages or performing signal measurement. The network device configures resources for the terminal to transmit the PRACH signal on the time slot symbols, and the terminal can transmit the PRACH signal on these resources according to the instructions of the higher layer or the physical layer. For a cell using paired spectrum, the SSB signal is configured on the symbol of the downlink bandwidth, and the PRACH resource is configured on the symbol of the uplink bandwidth. When some network equipment configuration parameters are used, the symbols used by some or all of the PRACH transmission resources overlap with the symbol positions used by the SSB in the time domain. For a terminal without full duplex capability, it cannot receive SSB and transmit PRACH at the same time. The terminal determines the validity of the PRACH resource, and uses the valid PRACH resource to map the PRACH resource to the SSB sequence number. When the terminal needs to send a PRACH signal, the terminal selects an available PRACH resource to transmit the signal.

The terminal may determine the symbol position of the SSB signal according to the configuration parameters of the network. For example, the terminal determines the symbol position in the downlink bandwidth of the SSB actually sent in the network according to ssb-PositionsInBurst and other parameters. The terminal may determine the symbol position of the PRACH resource according to the parameters configured by the network device. For example, the terminal may determine information such as time slots and symbol positions used by the PRACH resources on the paired spectrum according to prach-ConfigurationIndex. The terminal may also determine the positions of multiple symbols used by one PRACH resource in the time domain according to other parameters. Since a terminal without full duplex capability cannot transmit signals on the uplink bandwidth and receive signals on the downlink bandwidth at the same time, the terminal needs to determine the validity of PRACH resources.

Optionally, the terminal determines that the PRACH resources that use the same symbol position as the SSB on the paired spectrum are valid resources, and the terminal also determines that the PRACH resources that do not use the same symbol position as the SSB are valid resources. The terminal uses all valid PRACH resources to map with the SSB sequence number, and the terminal selects a valid PRACH resource to send the PRACH signal according to the instructions of the upper layer or the physical layer.

Optionally, the terminal does not receive downlink signals that overlap in the time domain with the symbol positions used by the valid PRACH resources. Optionally, these signals are one or more of PDCCH, PDSCH, CSI-RS and so on. A terminal without full-duplex capability determines the available PRACH resources on the uplink bandwidth of the paired spectrum cells. The terminal does not expect the base station to send itself a signal on the symbol of the corresponding downlink bandwidth, and the terminal does not receive any one or more of these resources. symbols of overlapping downstream signals. For example, the terminal may determine the length of the PRACH resource in the time domain according to the PRACH parameter, and determine its symbol sequence number in the uplink bandwidth time slot. If the uplink bandwidth and the downlink bandwidth use the same SCS, the uplink symbols and downlink symbols use the same sequence number, and the symbol sequence number used by the uplink PRACH resource can directly determine the symbols on the downlink bandwidth. When the uplink bandwidth and the downlink bandwidth use different SCSs, the symbol positions can be determined according to the relationship between the different SCSs. For example, the SCS of 30 kHz is used for the upstream, and the SCS of 15 kHz is used for the downstream. The terminal can use the 30kHz SCS in the downlink bandwidth to determine the symbol sequence number used by the PRACH, and the terminal determines the 15kHz symbol sequence number in the same time domain position on the downlink bandwidth according to the alignment relationship of different SCSs on the downlink bandwidth.

Optionally, these downlink signals do not include SSB signals or signals transmitted by CORESET0 determined by MIB. During a period in which the uplink random access signal is not transmitted using the uplink random access channel resource, it may be allowed to receive a common OFDM symbol that overlaps in the time domain with the OFDM symbol used by the uplink random access channel resource. Downlink signals (such as the above-mentioned SSB signal or the signal transmitted by CORESET0 determined by the MIB). The terminal determines whether to receive the SSB signal or the signal transmitted by CORESET0 determined by the MIB according to the current state. For example, when the terminal does not send a PRACH signal on the symbol, the terminal can receive the signal transmitted by CORESET0 determined by the SSB or MIB.

Optionally, the terminal does not receive downlink signals that overlap in the time domain with the first N1 symbols of the symbols used by the valid PRACH resources. Optionally, these signals are one or more of PDCCH, PDSCH, CSI-RS and so on.

For example, the timing offset value in the network uses a value of t1=25600Tc, and the terminal needs a maximum value of t2=25600Tc for downlink-to-uplink handover. In order to send an uplink signal on a given symbol, the terminal needs at least the first symbol of the uplink signal. Uplink switching starts at the previous time of t1+t2=51200Tc, which is about 26us. When the downlink bandwidth part SCS uses 15k and the normal CP length, the length of each symbol including the CP is about 71.3us; when the downlink bandwidth part SCS uses 30k and the normal CP length, the length of each symbol including the CP is about 35.6us. When the downlink bandwidth part SCS uses 60k and the normal CP length, the length of each symbol including the CP is about 17.8us. When the downlink bandwidth part SCS uses 60k and extended CP length, the length of each symbol including CP is about 20.8us. The terminal can determine the length of N1 symbols according to network parameters, so that the terminal has enough time to perform possible state transitions.

FIG. 8 is a schematic diagram for explaining N1 symbols before transmission of an uplink random access signal is determined in a method of configuring resources for random access. a and b in FIG. 8 respectively represent the scenarios of using the same SCS and using different SCSs by using the uplink bandwidth and the downlink bandwidth. It is assumed that the PRACH signal uses the positions of symbol sequence numbers 0, 1, and 2 on the uplink bandwidth.

FIG. 9 is a schematic diagram for explaining N2 symbols after the uplink random access signal is determined to be transmitted in the method for configuring resources for random access.

Optionally, the terminal determines the symbol length of N1 according to the N _{TA_offset} value and/or the bandwidth SCS parameter used by the cell. Optionally, when N _{TA_offset} is a value greater than 0, the terminal determines that N1 uses the first N1 value. Optionally, the terminal determines that the first N1 value is 2. At this time, for different SCSs, the length can meet the requirements of the terminal. Optionally, the terminal further determines the first N1 value according to the bandwidth SCS parameter. For example, for a bandwidth of 60 kHz SCS to determine the first N1 value of 2 (ie 2 symbols), for a bandwidth of 15k or 30 kHz SCS to determine the first N1 value of 1 (ie 1 symbol). In this case, for cells using different SCSs, the length can meet the requirements of the terminal. Optionally, when N _{TA_offset} is a value equal to 0, the terminal determines that N1 uses the second N1 value. Optionally, the terminal determines that the second N1 value is 1. Here, N _{TA_offset} represents the offset of the uplink frame relative to the downlink frame configured by the network device, and other representations may be used, which does not affect the implementation of the present invention. The value of the symbol here is obtained according to the frame offset value, SCS parameter, and switching time requirement of the example. When different values are selected for these parameters, other values may be generated, which does not affect the implementation of the present invention.

Optionally, the positions of the N1 symbols are determined according to the larger SCS among the SCSs in the uplink and downlink bandwidths.

Optionally, the terminal does not receive downlink signals that overlap N2 symbols after the symbols used by the valid PRACH resources. Optionally, the downlink signal is one or more of PDCCH, PDSCH, CSI-RS and the like.

Optionally, the downlink signal does not include the SSB or the symbols used by CORESET0 determined by the MIB.

Exemplarily, N _{TA_offset} uses a value of t1=25600Tc, and the terminal needs a maximum value of t2=25600Tc for uplink to downlink conversion. In order to receive the uplink signal in time after sending the uplink signal, the terminal can receive at most t1-t2= after the last symbol of the uplink signal. Uplink handover starts at time 0. If N _{TA_offset} uses the value of t1=0Tc, the terminal needs a maximum value of t2=25600Tc for uplink to downlink conversion. In order to receive the uplink signal in time, the terminal can receive at most t1-t2=25600Tc after the last symbol of the uplink signal. Start to perform uplink handover, the time is about 13us. The terminal may determine the length of N2 symbols according to network parameters, so that the terminal has enough time to perform possible state transitions.

FIG. 9 is a schematic diagram for explaining N2 symbols after the uplink random access signal is determined to be transmitted in the method for configuring resources for random access. a and b in FIG. 9 respectively represent the scenarios of using the same SCS and using different SCSs by using the uplink bandwidth and the downlink bandwidth. It is assumed that the PRACH signal uses the positions of symbols 0/1/2 on the upstream bandwidth.

Optionally, the terminal determines the symbol length of N2 according to the N _{TA_offset} value and/or the bandwidth SCS parameter used by the cell. Optionally, when N _{TA_offset} is a value greater than 0, the terminal determines that N2 uses the first N2 value. Optionally, the terminal determines that the first N2 value is 0 (ie, 0 symbol length). In this case, for different SCSs, the length can meet the time requirement of the terminal. Optionally, the terminal determines that N2 uses the second N2 value according to when N _{TA_offset} is equal to 0. Optionally, the terminal determines that the second N2 value is 1.

Optionally, the positions of the N2 symbols are determined according to symbols on a bandwidth with a larger SCS in the uplink and downlink bandwidths.

The descriptions about N1 and N2 in the previous embodiment can also be applied to this embodiment.

Optionally, the terminal determines that the PRACH resource using at least one same symbol position as the SSB signal on the uplink bandwidth of the paired spectrum is not an effective resource. Optionally, the terminal determines that the PRACH resource using at least one same symbol position as the N1 symbols after the SSB signal on the uplink bandwidth of the paired spectrum is not an effective resource. Optionally, the terminal determines that the PRACH resource using at least one same symbol position as the first N2 symbols of the SSB signal on the uplink bandwidth of the paired spectrum is not an effective resource. Optionally, the positions of the N1 symbols are determined according to symbols on a bandwidth with a larger SCS in the uplink and downlink bandwidths. Optionally, the positions of the N2 symbols are determined according to symbols on a bandwidth with a larger SCS in the uplink and downlink bandwidths.

Optionally, the terminal uses a set of valid and invalid PRACH resources to perform SSB mapping. The terminal does not use invalid PRACH resources to transmit PRACH signals.

Optionally, the terminal determines that the downlink bandwidth symbol position related to the valid PRACH resource does not receive downlink signals.

In an optional embodiment, the terminal determines the availability of PRACH resources according to the time slot format. The terminal determines the type of each symbol on the paired spectrum according to the slot format. The terminal determines that the symbols on the upstream bandwidth are upstream or flexible. The terminal receives the network time slot format indication to determine the validity of the PRACH resource on the time slot, and the terminal can send a PRACH signal on the PRACH resource. Optionally, the terminal determines that a PRACH resource overlapping at least one symbol with the flexible symbol is not a valid PRACH resource. The terminal determines the type of symbols on the downlink bandwidth. Optionally, the terminal determines that the PRACH resource that overlaps with the symbol indicated as downlink by at least one symbol is not a valid PRACH resource.

The network device can configure related resources for terminals that support type2 random access, including PRACH resources and related PUSCH channel parameters for type2 random access. The terminal may send the random access preamble and msgA message using the associated PRACH and PUSCH signals. PRACH and PUSCH are sent on the upstream bandwidth.

In an optional embodiment, the network device configures the SSB signal to be sent on the symbol of the time slot, and the terminal can receive the SSB signal for functions such as obtaining a broadcast message or performing signal measurement. The network device configures resources for PUSCH signal transmission on symbols of the time slot, and the terminal can send the PUSCH signal on these resources according to the instructions of the upper layer or the physical layer, etc., for the type 2 random access procedure. For a cell using paired spectrums, the SSB signal is configured on the symbol of the downlink bandwidth, and the PUSCH resource is configured on the symbol of the uplink bandwidth. Under certain configuration parameters, the symbols used by some or all of the PUSCH transmission resources overlap the symbol positions used by the SSB in the time domain. For a terminal without full duplex capability, it cannot receive SSB and transmit PUSCH at the same time. The terminal determines the validity of the PUSCH resource and uses the valid PUSCH resource to map the PUSCH resource to the PRACH resource.

Optionally, the terminal determines that the PUSCH resources that use the same symbol position as the SSB are valid resources, and the terminal determines that the PUSCH resources that do not use the same symbol position as the SSB are valid resources.

Optionally, the terminal does not receive downlink signals that overlap in the time domain with the symbol positions used by the valid PUSCH resources. Optionally, these signals are one or more of PDCCH, PDSCH, CSI-RS and the like. A terminal without full-duplex capability determines the available PUSCH resources on the uplink bandwidth of the paired spectrum cells. The terminal does not expect the base station to send downlink signals to itself on the downlink bandwidth symbols corresponding to these resources, and the terminal does not receive signals related to these locations. An overlapping downstream signal of one or more symbols. For example, the terminal may determine the length of the PUSCH resource in the time domain according to the configured PUSCH parameters, and determine its symbol sequence number in the uplink bandwidth. If the uplink bandwidth and the downlink bandwidth use the same SCS, the uplink symbol and the downlink symbol use the same sequence number, and the symbol sequence number used by the uplink PUSCH resource can be directly used to determine the symbol on the downlink bandwidth. When the uplink bandwidth and the downlink bandwidth use different SCSs, the conversion can be performed according to the symbol positions corresponding to the different SCSs. For example, the SCS of 30 kHz is used for the upstream, and the SCS of 15 kHz is used for the downstream. The terminal uses the 30kHz SCS to determine the symbol sequence number used by the PUSCH in the downlink bandwidth, and the terminal determines the 15kHz symbol sequence number in the same time domain position on the downlink bandwidth according to the alignment relationship of different SCSs on the downlink bandwidth.

Optionally, the terminal determines that the PUSCH resource that uses at least one symbol in the same position as the SSB on the paired spectrum is not a valid resource. Optionally, the terminal determines that a PUSCH resource using a symbol in the same position as at least one of the N1 symbols after the SSB on the paired spectrum is not an effective resource. Optionally, the terminal determines that the PUSCH resource using the symbol at the same position as at least one of the N2 symbols before the SSB on the paired spectrum is not an effective resource.

Optionally, the terminal uses a set of valid and invalid PUSCH resources to perform SSB mapping. The terminal does not use valid PUSCH resources to transmit the MsgA signal.

[Variation]

In the following, FIG. 10 is used to illustrate a user equipment that can execute the method performed by the user equipment described in detail above in the present invention as a modification.

FIG. 10 is a block diagram showing a user equipment UE according to the present invention.

As shown in FIG. 10 , the user equipment UE100 includes a processor 101 and a memory 102 . The processor 101 may include, for example, a microprocessor, a microcontroller, an embedded processor, or the like. The memory 102 may include, for example, volatile memory (eg, random access memory RAM), a hard disk drive (HDD), non-volatile memory (eg, flash memory), or other memory, or the like. Program instructions are stored on the memory 102 . When the instructions are executed by the processor 101, the above method described in detail in the present invention and executed by the user equipment can be executed.

The method of the present invention and the apparatus involved have been described above with reference to the preferred embodiments. Those skilled in the art can understand that the methods shown above are only exemplary, and the various embodiments described above can be combined with each other under the condition that no contradiction occurs. The method of the present invention is not limited to the steps and sequences shown above. The network node and user equipment shown above may include more modules, for example, may also include modules that can be developed or developed in the future and can be used for a base station, an MME, or a UE, and so on. The various identifiers shown above are only exemplary and not restrictive, and the present invention is not limited to the specific information elements exemplified by these identifiers. Numerous changes and modifications may occur to those skilled in the art in light of the teachings of the illustrated embodiments.

It should be understood that the above-described embodiments of the present invention may be implemented by software, hardware, or a combination of both. For example, the various components inside the base station and the user equipment in the above embodiments may be implemented by various devices, including but not limited to: analog circuit devices, digital circuit devices, digital signal processing (DSP) circuits, programmable processing Controllers, Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs), Programmable Logic Devices (CPLDs), etc.

In this application, "base station" may refer to a mobile communication data and control switching center with larger transmission power and wider coverage area, including functions such as resource allocation and scheduling, data reception and transmission, and the like. "User equipment" may refer to a user mobile terminal, for example, including a mobile phone, a notebook, and other terminal equipment that can wirelessly communicate with a base station or a micro base station.

Furthermore, embodiments of the invention disclosed herein may be implemented on a computer program product. More specifically, the computer program product is a product having a computer-readable medium on which computer program logic is encoded that, when executed on a computing device, provides relevant operations to achieve The above technical solutions of the present invention. When executed on at least one processor of a computing system, computer program logic causes the processor to perform the operations (methods) described in the embodiments of the present invention. Such arrangements of the present invention are typically provided as software, code and/or other data structures arranged or encoded on a computer readable medium such as an optical medium (eg CD-ROM), floppy or hard disk, or such as one or more Firmware or other medium of microcode on a ROM or RAM or PROM chip, or a downloadable software image in one or more modules, a shared database, etc. Software or firmware or such a configuration may be installed on a computing device, so that one or more processors in the computing device execute the technical solutions described in the embodiments of the present invention.

In addition, each functional module or each feature of the base station device and the terminal device used in each of the above embodiments may be implemented or executed by a circuit, which is usually one or more integrated circuits. Circuits designed to perform the various functions described in this specification may include general purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs) or general purpose integrated circuits, field programmable gate arrays (FPGAs) or other Program logic devices, discrete gate or transistor logic, or discrete hardware components, or any combination of the above. A general-purpose processor may be a microprocessor, or the processor may be an existing processor, controller, microcontroller, or state machine. The general-purpose processor or each circuit described above may be configured by digital circuits, or may be configured by logic circuits. In addition, when an advanced technology that can replace the current integrated circuit appears due to the advancement of semiconductor technology, the present invention can also use the integrated circuit obtained by using the advanced technology.

Although the present invention has been shown in conjunction with the preferred embodiments thereof, those skilled in the art will appreciate that various modifications, substitutions and alterations can be made herein without departing from the spirit and scope of the invention. Therefore, the present invention should not be limited by the above-described embodiments, but should be defined by the appended claims and their equivalents.

Claims (10)

1. A method for sending an uplink signal performed by a user equipment UE, comprising:

   Determine the first symbol position on the uplink bandwidth of the uplink signal OFDM symbol used for sending the uplink signal according to the uplink signal transmission parameter used for sending the uplink signal;

   determining the relevant OFDM symbols on the downlink bandwidth corresponding to the uplink bandwidth according to the determined first symbol position; and

   not receiving downlink signals in which the used OFDM symbols overlap with at least one of the determined relevant OFDM symbols in the time domain, and/or not using the determined relevant OFDM symbols to receive downlink signals,

   The uplink bandwidth and the downlink bandwidth do not overlap.
2. The method of claim 1, wherein the correlated OFDM symbols comprise at least one of:

   an OFDM symbol in the downlink bandwidth that overlaps with the uplink signal OFDM symbol in the time domain;

   an OFDM symbol in the downlink bandwidth that overlaps with at least one of the N1 OFDM symbols preceding the uplink signal OFDM symbol in the time domain, the N1 is a natural number, and the UE operates from a downlink operating state to an uplink operation Determine at least one of the state switching time, the network timing offset value in the network where the UE is located, and the larger value of the SCS used by the uplink bandwidth and the SCS used by the downlink bandwidth;

   an OFDM symbol in the downlink bandwidth that overlaps with at least one of N2 OFDM symbols following the uplink signal OFDM symbol in the time domain, where N2 is a natural number, and the UE operates from an uplink operating state to a downlink operation At least one of the state switching time, the network timing offset value in the network where the UE is located, and the larger value of the SCS used by the uplink bandwidth and the SCS used by the downlink bandwidth is determined.
3. A method for receiving downlink signals performed by a user equipment UE, comprising:

   determining the second symbol position on the downlink bandwidth of the downlink signal OFDM symbol used for receiving the downlink signal according to the downlink signal receiving parameter used for receiving the downlink signal;

   determining the relevant OFDM symbols in the uplink bandwidth corresponding to the downlink bandwidth according to the determined second symbol position; and

   not transmitting an uplink signal in which the used OFDM symbol overlaps with at least one of the relevant OFDM symbols in the time domain, and/or not using the determined relevant OFDM symbol to transmit an uplink signal,

   The uplink bandwidth and the downlink bandwidth do not overlap.
4. 3. The method of claim 3, wherein the relevant OFDM symbols comprise at least one of:

   an OFDM symbol in the uplink bandwidth that overlaps with the downlink signal OFDM symbol in the time domain;

   An OFDM symbol in the uplink bandwidth that overlaps with at least one of the N2 OFDM symbols preceding the downlink signal OFDM symbol in the time domain, N2 is a natural number, and is determined according to the UE from the uplink operating state to the downlink operating state. Determining at least one of a handover time, a network timing offset value in the network where the UE is located, and a larger value of the SCS used by the uplink bandwidth and the SCS used by the downlink bandwidth;

   An OFDM symbol in the downlink bandwidth that overlaps with at least one of the N1 OFDM symbols following the downlink signal OFDM symbol in the time domain, N1 is a natural number, and according to the UE from the downlink operating state to the uplink operating state At least one of the switching time, the network timing offset value in the network in which the UE is located, and the larger value of the SCS used by the uplink bandwidth and the SCS used by the downlink bandwidth is determined.
5. The method according to claim 2 or 4, wherein,

   The value of N1 includes multiple N1 values, and the method further includes: selecting one of the multiple N1 values as the value of N1 according to the network timing offset time value and/or the bandwidth SCS parameter,

   and / or,

   The value of N2 includes multiple N2 values, and the method further includes: selecting one of the multiple N2 values as the value of N2 according to the network timing offset time value and/or the bandwidth SCS parameter.
6. A method for configuring resources for random access performed by a user equipment UE, comprising:

   Determine the effective uplink channel resources in the uplink bandwidth that can be used to send uplink random access signals;

   selecting from the valid uplink channel resources to configure uplink random access channel resources for transmitting uplink random access signals; and

   at least when the uplink random access channel resource is used to transmit the uplink random access signal, the downlink signal on the OFDM that overlaps in the time domain with the OFDM symbol used by the uplink random access channel resource is not received,

   The uplink bandwidth and the corresponding downlink bandwidth do not overlap.
7. The method of claim 6, wherein determining valid uplink channel resources available for random access comprises at least one of the following:

   determining the uplink channel resource in which the used OFDM symbol does not overlap with at least one of the OFDM symbols used by the downlink synchronization system signal as the effective uplink channel resource;

   determining an uplink channel resource in which the used OFDM symbol overlaps with at least one of the OFDM symbols used by the downlink synchronization system signal as the effective uplink channel resource;

   The uplink channel resource that does not overlap in the time domain between the used OFDM symbol and at least one of the N1 OFDM symbols following the OFDM symbol used to receive the downlink random access signal in the downlink bandwidth is not determined as the effective uplink channel Resource, N1 is a natural number, and is determined according to the switching time of the UE from the downlink working state to the uplink working state and the network timing offset value in the network where the UE is located;

   Determining that the used OFDM symbol and at least one of the N2 OFDM symbols preceding the OFDM symbol used for receiving the downlink random access signal in the downlink bandwidth in the time domain overlap the uplink channel resource as the effective uplink channel resource , N2 is a natural number, and is determined according to the switching time of the UE from the uplink working state to the downlink working state and the network timing offset value in the network where the UE is located.
8. The method according to claim 6, wherein at least when the uplink random access signal is sent by using the uplink random access channel resource, the OFDM symbol used in the uplink random access channel resource is not received. Downlink signals on OFDM at overlapping positions in the time domain include:

   During the period in which the uplink random access signal is not transmitted using the uplink random access channel resource, it is allowed to receive a common downlink on an OFDM that overlaps in time domain with the OFDM symbol used by the uplink random access channel resource Signal.
9. The method according to any one of claims 6 to 8, wherein a type is defined for the OFDM symbol in the network where the UE is located, and the type includes any one of uplink, downlink and flexible,

   Determining valid uplink channel resources available for random access includes at least one of the following:

   Determine the effective uplink channel resource according to the time slot format configured by the network device;

   Not determining the uplink channel resource in which the used OFDM symbol and at least one of the OFDM symbols determined to be flexible in the uplink bandwidth are in an overlapping position as the effective uplink channel resource;

   The used OFDM symbol and the uplink channel resource in the downlink bandwidth overlapping with at least one of the OFDM symbols determined to be downlink are not determined as valid uplink channel resources.
10. A user equipment comprising:

    processor; and

    memory, storing instructions,

    wherein the instructions, when executed by the processor, perform the method of any one of claims 1 to 9.

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