Tuning method and device

Abstract

A tuning method and apparatus, during the tuning process of a terminal device, the transmission of relatively less important signals is preferentially abandoned, thereby meeting the communication system's need for SRS coverage enhancement. The method comprises: the terminal device determines a first resource and a second resource; wherein the first resource is used to send a sounding reference signal, and the first resource is determined by a first frequency domain resource and at least one symbol in a first subframe; the second resource is used to send a physical uplink shared channel or a physical uplink control channel, and the second resource is determined by a second frequency domain resource and a second subframe, and all or part of the frequency domain resources in the first frequency domain resource are not in the second frequency domain resource; the first subframe is the first subframe of two consecutive subframes, and the second subframe is the second subframe of two consecutive subframes. The terminal device determines a protection time for tuning on the first subframe and / or the second subframe; the protection time is used to prohibit the terminal from sending an uplink signal within the protection time.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a tuning method and device. Background Art

[0002] In the extended Long Term Evolution (LTE-A) system, the base station needs to know the quality of the wireless communication channel of each user equipment (UE). Therefore, the base station schedules and instructs the UE to send a sounding reference signal (SRS) to sound the channel. Each UE sends an SRS, and the base station estimates the uplink channel quality of each UE in different frequency bands by receiving and detecting the SRS, thereby providing a reference basis for resource block (RB) allocation, modulation coding, and multi-antenna transmission parameter settings. The detection of SRS has an important impact on the performance of the wireless communication system, especially in a multi-antenna communication system, where the accuracy of the SRS is closely related to the accuracy of the downlink beamforming.

[0003] SRS can be sent in the last N symbols of a subframe. If SRS is sent in a normal subframe, the value of N is 1; if SRS is sent in the UpPTS of a special subframe, the maximum value of N can be 6.

[0004] Currently, the architecture of further enhanced machine-type communications (FeMTC) and enhanced machine-type communications (eMTC) systems is based on the LTE-A system. For FeMTC and eMTC systems, there are bandwidth-reduced low-complexity (BL) UEs or coverage-enhanced user equipment (CE). The uplink bandwidth supported by these types of UEs may be smaller than the system bandwidth. Therefore, the frequency band of the UE's SRS transmission may exceed the UE's uplink transmission bandwidth. In the above case, the UE needs to tune to change the frequency domain position occupied by its own uplink transmission resources, so as to achieve symbol transmission on different frequency bands.

[0005] The UE tuning process requires a period of time, which may be called the guard time. The UE cannot transmit signals during this guard time. Furthermore, the guard time required for different UE tuning depends on the UE's tuning capabilities. Generally, the guard time required by the UE is {0, 1, 2} symbols. When the tuning time required is 0 symbols, the UE can successfully transmit all SRS and other uplink transmission signals. If the tuning time required is 1 or 2 symbols, the UE will not be able to transmit signals for 1 or 2 symbols during the tuning process. In the LTE-A system, when the UE determines that the SRS transmission frequency band exceeds the UE's uplink transmission bandwidth and needs to tune, it always prioritizes the symbols occupied by the SRS signal as guard time, that is, it does not transmit signals during the time period when the SRS signal is required to be transmitted. However, considering the performance requirements of the LTE-A system, SRS coverage enhancement is required, which requires repeated transmission of the SRS signal over multiple symbols in the time domain. If the SRS signal is not transmitted during the UE tuning process, the SRS coverage enhancement requirements of the LTE-A system will not be met. Summary of the Invention

[0006] The embodiments of the present application provide a tuning method and apparatus, which, during the tuning process of a terminal device, give priority to giving up the transmission of other relatively less important signals, thereby meeting the needs of the communication system for SRS coverage enhancement.

[0007] In a first aspect, an embodiment of the present application provides a tuning method, comprising:

[0008] The terminal device determines a first resource and a second resource; wherein the first resource is used to send a sounding reference signal, and the first resource is determined by a first frequency domain resource and at least one symbol in a first subframe, and the at least one symbol includes the last symbol in the first subframe; the second resource is used to send a physical uplink shared channel or a physical uplink control channel, and the second resource is determined by a second frequency domain resource and a second subframe, and all or part of the frequency domain resources in the first frequency domain resource are not in the second frequency domain resource; the first subframe is the previous subframe of two consecutive subframes, and the second subframe is the next subframe of the two consecutive subframes.

[0009] The terminal device determines a protection time for tuning on the first subframe and / or the second subframe; the protection time is used to prohibit the terminal from sending an uplink signal within the protection time.

[0010] It should be noted that all or part of the frequency domain resources in the first frequency domain resources are not in the second frequency domain resources, or the first frequency domain resources and the second frequency domain resources do not completely overlap.

[0011] The first frequency domain resources and the second frequency domain resources do not completely overlap, which means that the subcarrier range where the first frequency domain resources are located has no overlapping part with the subcarrier range where the second frequency domain resources are located, or the subcarrier range where the first frequency domain resources are located has both overlapping parts and non-overlapping parts with the subcarrier range where the second frequency domain resources are located.

[0012] Through the above design, in the embodiment of the present application, the protection time for tuning is determined on the first subframe and / or the second subframe, rather than giving up sending SRS first, thereby achieving SRS coverage enhancement on the basis of terminal tuning.

[0013] Optionally, the terminal device determines the protection time for tuning on at least the second subframe. In the prior art, when tuning requires protection time, it is preferred to give up sending SRS as protection time. Generally, the last symbol or several symbols in the first subframe used to send SRS are used as protection time, that is, the SRS signal is prohibited from being sent on the last symbol or the last several symbols of the first subframe, and no other uplink signals are sent. The solution provided by the embodiment of the present application adopts a method of giving priority to retaining SRS, no longer giving priority to giving up SRS, and giving priority to giving up the first symbol or the first several symbols in the second subframe as protection time. This achieves enhanced coverage of SRS.

[0014] In one possible design, the terminal device determines, on the first subframe and / or the second subframe, a guard time for tuning, including:

[0015] The terminal device determines that the protection time is located on the first symbol of multiple symbols used to send a physical uplink shared channel or a physical uplink control channel in the second subframe.

[0016] Through the above design, by giving up the transmission of one symbol of the physical uplink shared channel or the physical uplink control channel, SRS coverage enhancement is achieved while minimizing the impact on signal transmission.

[0017] In one possible design, the terminal device determines, on the first subframe and / or the second subframe, a guard time for tuning, including:

[0018] The second resource is used to send a physical uplink control channel, and the terminal device determines that the protection time is located at the last symbol in the first subframe and the first symbol of multiple symbols in the second subframe used to send the physical uplink control channel.

[0019] Through the solution provided by the embodiment of the present application, when the first two symbols of the second subframe are used to send PUCCH, due to the scenario of SRS coverage enhancement, on the one hand, it is necessary to retain the transmission of SRS as much as possible, and on the other hand, the signal carried in PUCCH is a control signal, and the importance of the control signal is relatively high, so it is also necessary to retain the transmission of the PUCCH signal as much as possible. Therefore, one symbol is selected in SRS and PUCCH respectively to abandon transmission. Specifically, the terminal device uses the last symbol in the first subframe and the first symbol in the second subframe as protection time to prohibit the terminal device from sending uplink signals, thereby achieving SRS coverage enhancement with the smallest impact on signal transmission.

[0020] In one possible design, the terminal device determines, on the first subframe and / or the second subframe, a guard time for tuning, including:

[0021] The second resource is used to send a physical uplink shared channel, and the terminal device determines that the protection time is located in the second subframe for sending the first two symbols of multiple consecutive symbols in the physical uplink shared channel.

[0022] With the above design, when the first two symbols of the second subframe are used to transmit PUSCH, since SRS transmission needs to be preserved as much as possible in the SRS coverage enhancement scenario, and the signal carried by PUSCH is a data signal, which is relatively less important, the transmission of the first two PUSCH symbols is abandoned. Specifically, the terminal device uses the first two symbols of the second subframe as guard time to prohibit the terminal device from transmitting uplink signals. This achieves SRS coverage enhancement while minimizing the impact on signal transmission.

[0023] In one possible design, before the terminal device determines a guard time for tuning on the first subframe and / or the second subframe, further includes:

[0024] The terminal device receives first indication information, where the first indication information is used to instruct the terminal device to determine the protection time on the second subframe and / or on the second subframe.

[0025] In one possible design, the terminal device receives the first indication information, including:

[0026] The terminal device receives radio resource control signaling, where the radio resource control signaling carries the first indication information; or

[0027] The terminal device receives downlink control information, and the downlink control information includes the first indication information.

[0028] Through the above design, by carrying indication information in high-layer signaling to indicate the method adopted by the terminal device for tuning, the terminal device can flexibly select the symbols that need to be retained and the symbols that need to be abandoned during the tuning process, thereby improving flexibility.

[0029] In one possible design, before determining a guard time on the first subframe and / or the second subframe, the method further includes:

[0030] The terminal device receives second indication information;

[0031] The second indication information is used to indicate that the guard time is located on the last symbol in the first subframe; or,

[0032] If the sounding reference signal is sent only on the last symbol in the first subframe, the second indication information is used to indicate that the guard time is located on the last symbol in the first subframe and the first symbol in the second subframe; or

[0033] If the sounding reference signal is sent only on at least two symbols on the first subframe, the at least two symbols include the last symbol on the first subframe, and the second indication information is used to indicate that the protection time is located on a plurality of consecutive symbols from the first symbol to the last symbol of the at least two symbols on the first subframe.

[0034] In one possible design, the terminal device receives the second indication information, including:

[0035] The terminal device receives radio resource control signaling, where the radio resource control signaling carries the second indication information; or

[0036] The terminal device receives downlink control information, and the downlink control information includes the second indication information.

[0037] Through the above design, by carrying indication information in high-layer signaling to indicate the method adopted by the terminal device for tuning, the terminal device can flexibly select the symbols that need to be retained and the symbols that need to be abandoned during the tuning process, thereby improving flexibility.

[0038] In one possible design, the bandwidth of the first frequency domain resource is equal to the transmission bandwidth of the sounding reference signal, and the second frequency domain resource is a narrowband resource. The bandwidth of the narrowband resource is equal to the maximum bandwidth supported by the terminal device, or the bandwidth of the narrowband resource is equal to the maximum number of physical resource blocks supported by the terminal device. The terminal device is a bandwidth reduced low complexity BL terminal device, or a coverage enhanced CE terminal device, or a machine type communication MTC terminal device.

[0039] Narrowband resources are relative to system bandwidth. When UE capabilities are limited, such as by cost or power consumption constraints, narrowband resources can be used for the second frequency domain. Since a larger supported bandwidth increases costs and power consumption, using narrowband resources can reduce costs and overall power consumption, while also increasing transmit power within a frequency band to improve uplink coverage.

[0040] In a second aspect, an embodiment of the present application provides a tuning method, comprising:

[0041] The network device determines a protection time for the terminal device to tune from the first resource to the second resource, where the protection time is located on the first subframe and / or the second subframe, wherein the protection time is used to prohibit the terminal device from sending an uplink signal within the protection time, and the first resource is used for the terminal device to send a sounding reference signal, and the first resource is determined by the first frequency domain resource and at least one symbol in the first subframe, and the at least one symbol includes the last symbol in the first subframe; the second resource is used for the terminal device to send a physical uplink control channel or a physical uplink shared channel, and the second resource is determined by the second frequency domain resource and the second subframe, and all or part of the frequency domain resources in the first frequency domain resource are not in the second frequency domain resource; the first subframe is the previous subframe of two consecutive subframes, and the second subframe is the next subframe of the two consecutive subframes;

[0042] The network device determines that there is no uplink signal from the terminal device within the protection time.

[0043] Through the above design, in the embodiment of the present application, the protection time for tuning is determined on the first subframe and / or the second subframe, rather than giving up sending SRS first, thereby achieving SRS coverage enhancement on the basis of terminal tuning.

[0044] Optionally, the network device monitors a sounding reference signal sent by the terminal on resources other than a guard time in the first resource and the second resource, and monitors a physical uplink shared channel or a physical uplink control channel sent by the terminal.

[0045] In one possible design, the method further includes:

[0046] The network device sends first indication information to the terminal device, where the first indication information is used to indicate that the protection time is located on the first subframe and / or the second subframe.

[0047] Through the above design, the terminal device is instructed to tune in a manner by indicating information, and the terminal device can flexibly select symbols that need to be retained and symbols that need to be abandoned during the tuning process, thereby improving flexibility.

[0048] In one possible design, the first indication information is used to indicate that the protection time is located in the first symbol of a plurality of consecutive symbols used to send a physical uplink shared channel or a physical uplink control channel in the second subframe.

[0049] With the above design, by giving up transmitting one symbol of the physical uplink shared channel or the physical uplink control channel, SRS coverage enhancement is achieved while minimizing the impact on signal transmission.

[0050] In one possible design, the first indication information is used to indicate that the protection time is located in the last symbol of the first subframe and the first symbol of multiple symbols in the second subframe used for the terminal device to send a physical uplink control channel.

[0051] Through the solution provided by the embodiment of the present application, when the first two symbols of the second subframe are used to send PUCCH, due to the scenario of SRS coverage enhancement, on the one hand, it is necessary to retain the transmission of SRS as much as possible, and on the other hand, the signal carried in PUCCH is a control signal, and the importance of the control signal is relatively high, so it is also necessary to retain the transmission of the PUCCH signal as much as possible. Therefore, one symbol is selected in SRS and PUCCH respectively to abandon transmission. Specifically, the terminal device uses the last symbol in the first subframe and the first symbol in the second subframe as protection time to prohibit the terminal device from sending uplink signals, thereby achieving SRS coverage enhancement with the smallest impact on signal transmission.

[0052] In one possible design, the first indication information is used to indicate that the protection time is located in the first two symbols of multiple symbols used by the terminal device to send a physical uplink shared channel in the second subframe.

[0053] With the above design, when the first two symbols of the second subframe are used to transmit PUSCH, since SRS transmission needs to be preserved as much as possible in the SRS coverage enhancement scenario, and the signal carried by PUSCH is a data signal, which is relatively less important, the transmission of the first two PUSCH symbols is abandoned. Specifically, the terminal device uses the first two symbols of the second subframe as guard time to prohibit the terminal device from transmitting uplink signals. This achieves SRS coverage enhancement while minimizing the impact on signal transmission.

[0054] In one possible design, the network device sends the first indication information to the terminal device, including:

[0055] The network device sends a radio resource control signaling to the terminal device, where the radio resource control signaling carries the first indication information; or

[0056] The network device sends downlink control information to the terminal device, where the downlink control information includes the first indication information.

[0057] Through the above design, by carrying indication information in high-layer signaling to indicate the method adopted by the terminal device for tuning, the terminal device can flexibly select the symbols that need to be retained and the symbols that need to be abandoned during the tuning process, thereby improving flexibility.

[0058] In one possible design, the method further includes:

[0059] The network device sends second indication information to the terminal device;

[0060] The second indication information is used to instruct the terminal device to generate a guard time on the last symbol in the first subframe; or,

[0061] If the sounding reference signal is sent only on the last symbol of the first subframe, the second indication information is used to indicate that the guard time is located on the last symbol of the first subframe and the first symbol of the second subframe; or,

[0062] If the sounding reference signal is sent on at least two consecutive symbols of the first subframe, the at least two consecutive symbols include the last two symbols in the first subframe, and the second indication information is used to indicate that the protection time is located on the last two symbols of the first subframe.

[0063] In one possible design, the network device sends the second indication information to the terminal device, including:

[0064] The network device sends a radio resource control signaling to the terminal device, where the radio resource control signaling carries the second indication information; or

[0065] The network device sends downlink control information to the terminal device, where the downlink control information includes the second indication information.

[0066] In a third aspect, based on the same inventive concept as the method, an embodiment of the present application provides a tuning device, which is applied to a terminal device and includes:

[0067] A first determination module is configured to determine a first resource and a second resource; wherein the first resource is used to send a sounding reference signal, the first resource is determined by a first frequency domain resource and at least one symbol in a first subframe, and the at least one symbol includes the last symbol in the first subframe; the second resource is used to send a physical uplink shared channel or a physical uplink control channel, the second resource is determined by a second frequency domain resource and a second subframe, and all or part of the frequency domain resources in the first frequency domain resource are not in the second frequency domain resource; the first subframe is the first subframe of two consecutive subframes, and the second subframe is the second subframe of the two consecutive subframes;

[0068] The second determining module is configured to determine a guard time for tuning on the first subframe and / or the second subframe; the guard time is used to prohibit the terminal from sending an uplink signal within the guard time.

[0069] In one possible design, the second determination module is specifically used to determine that the protection time is located on the first symbol of multiple symbols used to send a physical uplink shared channel or a physical uplink control channel in the second subframe.

[0070] In one possible design, the second resource is used to send a physical uplink control channel, and the second determination module is specifically used to determine that the protection time is located at the last symbol in the first subframe and the first symbol of multiple symbols in the second subframe used to send the physical uplink control channel.

[0071] In one possible design, the second resource is used to send a physical uplink shared channel, and the second determination module is specifically used to determine that the protection time is located in the second subframe for sending the first two symbols of multiple consecutive symbols in the physical uplink shared channel.

[0072] In one possible design, it also includes:

[0073] A receiving module is used to receive first indication information before the second determination module executes the determination of the protection time for tuning on the first subframe and / or the second subframe, wherein the first indication information is used to instruct the terminal device to determine the protection time on the second subframe and / or the second subframe.

[0074] In one possible design, the receiving module is specifically configured to:

[0075] receiving radio resource control signaling, where the radio resource control signaling carries the first indication information; or

[0076] Downlink control information is received, where the downlink control information includes the first indication information.

[0077] In one possible design, it also includes:

[0078] a receiving module, configured to receive second indication information before the second determining module determines the guard time on the first subframe and / or the second subframe;

[0079] The second indication information is used to indicate that the guard time is located on the last symbol in the first subframe; or,

[0080] If the sounding reference signal is sent only on the last symbol in the first subframe, the second indication information is used to indicate that the guard time is located on the last symbol in the first subframe and the first symbol in the second subframe; or

[0081] If the sounding reference signal is sent only on at least two symbols on the first subframe, the at least two symbols include the last symbol on the first subframe, and the second indication information is used to indicate that the protection time is located on a plurality of consecutive symbols from the first symbol to the last symbol of the at least two symbols on the first subframe.

[0082] In one possible design, the receiving module is specifically configured to:

[0083] receiving radio resource control signaling, where the radio resource control signaling carries the second indication information; or

[0084] Downlink control information is received, where the downlink control information includes the second indication information.

[0085] In one possible design, the bandwidth of the first frequency domain resource is equal to the transmission bandwidth of the sounding reference signal, and the second frequency domain resource is a narrowband resource.

[0086] In one possible design, the bandwidth of the narrowband resources is equal to the maximum bandwidth supported by the terminal device, or the bandwidth of the narrowband resources is equal to the maximum number of physical resource blocks supported by the terminal device.

[0087] In one possible design, the terminal device is a bandwidth reduction low complexity BL terminal device, or a coverage enhancement CE terminal device, or a machine type communication MTC terminal device.

[0088] In a fourth aspect, an embodiment of the present application provides a tuning device, which is applied to a network device and includes:

[0089] A first determination module is configured to determine a protection time for a terminal device to tune from a first resource to a second resource, where the protection time is located on a first subframe and / or a second subframe, wherein the protection time is used to prohibit the terminal device from sending an uplink signal within the protection time, and the first resource is used for the terminal device to send a sounding reference signal, and the first resource is determined by a first frequency domain resource and at least one symbol in the first subframe, and the at least one symbol includes the last symbol in the first subframe; the second resource is used for the terminal device to send a physical uplink control channel or a physical uplink shared channel, and the second resource is determined by a second frequency domain resource and the second subframe, and all or part of the frequency domain resources in the first frequency domain resource are not in the second frequency domain resource; the first subframe is the previous subframe of two consecutive subframes, and the second subframe is the next subframe of the two consecutive subframes;

[0090] The second determination module is used to determine whether there is no uplink signal of the terminal device within the protection time.

[0091] In one possible design, the device further includes:

[0092] A sending module is used to send first indication information to the terminal device, where the first indication information is used to indicate that the protection time is located on the first subframe and / or the second subframe.

[0093] In one possible design, the first indication information is used to indicate that the protection time is located in the first symbol of a plurality of consecutive symbols used to send a physical uplink shared channel or a physical uplink control channel in the second subframe.

[0094] In one possible design, the first indication information is used to indicate that the protection time is located in the last symbol of the first subframe and the first symbol of multiple symbols in the second subframe used for the terminal device to send a physical uplink control channel.

[0095] In one possible design, the first indication information is used to indicate that the protection time is located in the first two symbols of multiple symbols used by the terminal device to send a physical uplink shared channel in the second subframe.

[0096] In one possible design, the sending module is specifically configured to:

[0097] Sending radio resource control signaling to the terminal device, where the radio resource control signaling carries the first indication information; or,

[0098] Send downlink control information to the terminal device, where the downlink control information includes the first indication information.

[0099] In one possible design, the device further includes:

[0100] A sending module, configured to send second indication information to the terminal device;

[0101] The second indication information is used to instruct the terminal device to generate a guard time on the last symbol in the first subframe; or,

[0102] If the sounding reference signal is sent only on the last symbol of the first subframe, the second indication information is used to indicate that the guard time is located on the last symbol of the first subframe and the first symbol of the second subframe; or,

[0103] If the sounding reference signal is sent on at least two consecutive symbols of the first subframe, the at least two consecutive symbols include the last two symbols in the first subframe, and the second indication information is used to indicate that the protection time is located on the last two symbols of the first subframe.

[0104] In one possible design, the sending module is specifically configured to:

[0105] Sending radio resource control signaling to the terminal device, where the radio resource control signaling carries the second indication information; or,

[0106] Send downlink control information to the terminal device, where the downlink control information includes the second indication information.

[0107] In a fifth aspect, an embodiment of the present application provides a tuning method, comprising:

[0108] The terminal device determines a first resource and a second resource; wherein the first resource is used to receive a physical downlink control channel or a physical downlink shared channel, and the first resource is determined by a first frequency domain resource and M consecutive symbols of a downlink pilot time slot in a special subframe; the second resource is used to send a sounding reference signal, and the second resource is determined by a second frequency domain resource and an uplink pilot time slot in the special subframe, and all or part of the frequency domain resources in the second frequency domain resource are not in the first frequency domain resource;

[0109] The terminal device determines a protection time for tuning on the last consecutive N symbols in the downlink pilot time slot or on the uplink pilot time slot; the protection time is used to prohibit the terminal device from sending or receiving signals within the protection time, where M and N are both positive integers, and M is greater than or equal to N.

[0110] Through the above design, the protection time for tuning is determined on the last N consecutive symbols in the downlink pilot time slot or on the uplink pilot time slot. Since the importance of the downlink control channel or downlink shared channel transmitted in the downlink pilot time slot is relatively low compared to the coverage-enhanced SRS, it is possible to choose to give up receiving the downlink control channel or downlink shared channel, or to choose to give up transmitting SRS, as needed, thereby improving flexibility and being able to meet the needs of some terminal devices for SRS coverage enhancement.

[0111] In one possible design, before the terminal device determines a guard time for tuning on the last N consecutive symbols in the downlink pilot time slot, the terminal device further includes:

[0112] The terminal device receives first indication information, where the first indication information is used to instruct the terminal device to determine the protection time on the last N consecutive symbols in the downlink pilot time slot.

[0113] Through the above design, the terminal device is instructed to tune in a manner by indicating information, and the terminal device can flexibly select symbols that need to be retained and symbols that need to be abandoned during the tuning process, thereby improving flexibility.

[0114] In one possible design, the terminal device receives the first indication information, including:

[0115] The terminal device receives radio resource control signaling, where the radio resource control signaling carries the first indication information; or

[0116] The terminal device receives downlink control information, and the downlink control information includes the first indication information.

[0117] Through the above design, by carrying indication information in high-layer signaling to indicate the method adopted by the terminal device for tuning, the terminal device can flexibly select the symbols that need to be retained and the symbols that need to be abandoned during the tuning process, thereby improving flexibility.

[0118] In one possible design, before the terminal device determines a guard time for tuning on the uplink pilot timeslot, the method further includes:

[0119] The terminal device receives second indication information;

[0120] The second indication information is used to indicate that the guard time is located in the uplink pilot time slot.

[0121] In one possible design, the terminal device receives the second indication information, including:

[0122] The terminal device receives radio resource control signaling, where the radio resource control signaling carries the second indication information; or

[0123] The terminal device receives downlink control information, and the downlink control information includes the second indication information.

[0124] Through the above design, by carrying indication information in high-layer signaling to indicate the method adopted by the terminal device for tuning, the terminal device can flexibly select the symbols that need to be retained and the symbols that need to be abandoned during the tuning process, thereby improving flexibility.

[0125] In one possible design, the first frequency domain resource is a narrowband resource, and the bandwidth of the second frequency domain resource is equal to the transmission bandwidth of the sounding reference signal.

[0126] In one possible design, the bandwidth of the narrowband resources is equal to the maximum bandwidth supported by the terminal device, or the bandwidth of the narrowband resources is equal to the maximum number of physical resource blocks supported by the terminal device.

[0127] In one possible design, the terminal device is a bandwidth reduction low complexity BL terminal device, or a coverage enhancement CE terminal device, or a machine type communication MTC terminal device.

[0128] In a sixth aspect, an embodiment of the present application provides a tuning method, comprising:

[0129] The network device determines a protection time for the terminal device to tune from the first resource to the second resource, where the protection time is located on N consecutive symbols in the downlink pilot time slot of the special subframe or the protection time is located in the uplink pilot time slot, and the protection time is used to prohibit the terminal device from sending or receiving signals within the protection time; wherein the first resource is used to receive a physical downlink control channel or a physical downlink shared channel, and the first resource is determined by a first frequency domain resource and M consecutive symbols of the downlink pilot time slot; the second resource is used to send a sounding reference signal, and the second resource is determined by a second frequency domain resource and the uplink pilot time slot in the special subframe, and all or part of the frequency domain resources in the second frequency domain resource are not in the first frequency domain resource; wherein M and N are both positive integers, and M is greater than or equal to N;

[0130] The network device determines that there is no signal from the terminal device within the protection time.

[0131] Through the above design, the protection time for tuning is determined on the last N consecutive symbols in the downlink pilot time slot or on the uplink pilot time slot. Since the importance of the downlink control channel or downlink shared channel transmitted in the downlink pilot time slot is relatively low compared to the coverage-enhanced SRS, it is possible to choose to give up receiving the downlink control channel or downlink shared channel, or to choose to give up transmitting SRS, as needed, thereby improving flexibility and being able to meet the needs of some terminal devices for SRS coverage enhancement.

[0132] In one possible design, the method further includes:

[0133] The network device sends indication information to the terminal device, where the indication information is used to indicate that the protection time is located on the last N consecutive symbols in the downlink pilot time slot or indicates that the protection time is located in the uplink pilot time slot.

[0134] In one possible design, the network device sends indication information to the terminal device, including:

[0135] The network device sends a radio resource control signaling to the terminal device, where the radio resource control signaling carries the indication information; or

[0136] The network device sends downlink control information to the terminal device, where the downlink control information includes the indication information.

[0137] Through the above design, by carrying indication information in high-layer signaling to indicate the method adopted by the terminal device for tuning, the terminal device can flexibly select the symbols that need to be retained and the symbols that need to be abandoned during the tuning process, thereby improving flexibility.

[0138] In a seventh aspect, an embodiment of the present application provides a tuning device, wherein the device is applied to a terminal device, including:

[0139] A first determination module is configured to determine a first resource and a second resource; wherein the first resource is used to receive a physical downlink control channel or a physical downlink shared channel, and the first resource is determined by a first frequency domain resource and M consecutive symbols of a downlink pilot time slot in a special subframe; and the second resource is used to send a sounding reference signal, and the second resource is determined by a second frequency domain resource and an uplink pilot time slot in the special subframe, and all or part of the frequency domain resources in the second frequency domain resource are not in the first frequency domain resource;

[0140] The second determination module is used to determine the protection time for tuning on the last consecutive N symbols in the downlink pilot time slot or on the uplink pilot time slot; the protection time is used to prohibit the terminal device from sending or receiving signals within the protection time, where M and N are both positive integers, and M is greater than or equal to N.

[0141] In one possible design, it also includes:

[0142] A receiving module is used to receive first indication information before the second determination module determines the protection time for tuning on the last consecutive N symbols in the downlink pilot time slot, wherein the first indication information is used to instruct the terminal device to determine the protection time on the last consecutive N symbols in the downlink pilot time slot.

[0143] In one possible design, the receiving module is specifically configured to:

[0144] receiving radio resource control signaling, where the radio resource control signaling carries the first indication information; or

[0145] Downlink control information is received, where the downlink control information includes the first indication information.

[0146] In one possible design, it also includes:

[0147] a receiving module, configured to receive second indication information before the second determining module determines a guard time for tuning on the uplink pilot time slot;

[0148] The second indication information is used to indicate that the guard time is located in the uplink pilot time slot.

[0149] In one possible design, the receiving module is specifically configured to:

[0150] receiving radio resource control signaling, where the radio resource control signaling carries the second indication information; or

[0151] Downlink control information is received, where the downlink control information includes the second indication information.

[0152] In one possible design, the first frequency domain resource is a narrowband resource, and the bandwidth of the second frequency domain resource is equal to the transmission bandwidth of the sounding reference signal.

[0153] In one possible design, the bandwidth of the narrowband resources is equal to the maximum bandwidth supported by the terminal device, or the bandwidth of the narrowband resources is equal to the maximum number of physical resource blocks supported by the terminal device.

[0154] In one possible design, the terminal device is a bandwidth reduction low complexity BL terminal device, or a coverage enhancement CE terminal device, or a machine type communication MTC terminal device.

[0155] In an eighth aspect, an embodiment of the present application provides a tuning device, which is applied to a network device, including:

[0156] A first determination module is configured to determine a protection time for a terminal device to tune from a first resource to a second resource, where the protection time is located on N consecutive symbols in a downlink pilot time slot of a special subframe or the protection time is located in an uplink pilot time slot, and the protection time is used to prohibit the terminal device from transmitting or receiving signals within the protection time; wherein the first resource is used to receive a physical downlink control channel or a physical downlink shared channel, and the first resource is determined by a first frequency domain resource and M consecutive symbols in the downlink pilot time slot; the second resource is used to send a sounding reference signal, and the second resource is determined by a second frequency domain resource and an uplink pilot time slot in the special subframe, and all or part of the frequency domain resources in the second frequency domain resource are not in the first frequency domain resource; wherein M and N are both positive integers, and M is greater than or equal to N;

[0157] The second determining module is configured to determine that no signal from the terminal device exists within the protection time.

[0158] In one possible design, the device further includes:

[0159] A sending module is used to send indication information to the terminal device, where the indication information is used to indicate that the protection time is located on the last N consecutive symbols in the downlink pilot time slot or indicates that the protection time is located in the uplink pilot time slot.

[0160] In one possible design, the sending module is specifically configured to:

[0161] Sending radio resource control signaling to the terminal device, where the radio resource control signaling carries the indication information; or,

[0162] Send downlink control information to the terminal device, where the downlink control information includes the indication information.

[0163] In the ninth aspect, an embodiment of the present application also provides a terminal device, which includes a transceiver, a processor and a memory, wherein the transceiver is used to send and receive data, the memory is used to store software programs, and the processor is used to read the software programs stored in the memory and implement the method provided by the first aspect or any one of the designs of the first aspect above; or is used to implement the method provided by the fifth aspect or any one of the designs of the fifth aspect.

[0164] In a tenth aspect, an embodiment of the present application provides a network device, comprising a transceiver, a processor, and a memory, wherein the transceiver is used to transmit and receive data, the memory is used to store software programs, and the processor is used to read the software programs stored in the memory and implement the method provided in the second aspect or any one of the designs of the second aspect. Alternatively, the method provided in the sixth aspect or any one of the designs of the sixth aspect is implemented.

[0165] In the eleventh aspect, a computer storage medium is also provided in an embodiment of the present application, which stores a software program. When the software program is read and executed by one or more processors, it can implement the method provided by the first aspect or any one of the designs of the first aspect, or implement the method provided by the second aspect or any one of the designs of the second aspect, or implement the method provided by the fifth aspect or any one of the designs of the fifth aspect, or implement the method provided by the sixth aspect or any one of the designs of the sixth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0166] Figure 1 A schematic diagram of the system architecture provided in an embodiment of the present application;

[0167] Figure 2A A tuning diagram corresponding to scenario 1 provided in an embodiment of the present application;

[0168] Figure 2B A tuning diagram corresponding to scenario 2 provided in an embodiment of the present application;

[0169] Figure 3 A flow chart of a tuning method in scenario 1 provided in an embodiment of the present application;

[0170] Figure 4 A tuning diagram provided in the embodiment of the present application in the case of scenario 1 and when B=1;

[0171] Figure 5A-5B A tuning diagram provided in the embodiment of the present application in the case of scenario 1 and when B=2;

[0172] Figure 6A-6B Another tuning diagram provided in the embodiment of the present application under scenario 1 and when B=2;

[0173] Figure 7A Another tuning flow chart for scenario 1 provided in an embodiment of the present application;

[0174] Figure 7B Another tuning flow chart provided in the embodiment of the present application in the case of scenario 1;

[0175] Figure 8A schematic diagram of tuning based on indication information in scenario 1 provided in an embodiment of the present application;

[0176] Figure 9 A flow chart of a tuning method in scenario 2 provided in an embodiment of the present application;

[0177] Figure 10 A tuning diagram for scenario 2 provided in an embodiment of the present application;

[0178] Figures 11A and 11B A flow chart of a tuning method in scenario 2 provided in an embodiment of the present application;

[0179] Figure 12 A schematic diagram of a tuning device applied to a terminal device in scenario one provided by an embodiment of the present application;

[0180] Figure 13 A schematic diagram of a tuning device applied to a terminal device in scenario 2 provided in an embodiment of the present application;

[0181] Figure 14 Schematic diagram of a terminal device provided in an embodiment of the present application;

[0182] Figure 15 A schematic diagram of a tuning device applied to a network device in scenario 1 provided by an embodiment of the present application;

[0183] Figure 16 A schematic diagram of a tuning device applied to a network device in scenario 2 provided by an embodiment of the present application;

[0184] Figure 17 Schematic diagram of the network equipment provided in the embodiment of the present application. DETAILED DESCRIPTION

[0185] The embodiments of the present application may be applicable to a fourth generation mobile communication system (English: the 4th Generation mobile communication, abbreviated as: 4G) system, such as a time division duplexing (English: Time Division Duplexing, abbreviated as: TDD) system of a long term evolution (English: Long Term Evolution, abbreviated as: LTE), or a TDD system of LTE-A, or may be an eMTC or FeMTC system based on an LTE TDD system or an LTE-A TDD system. Or it may also be a fifth generation mobile communication system (English: the 5th Generation mobile communication, abbreviated as: 5G) system. The embodiments of the present application may also be applied to other communication systems, as long as there is an entity in the communication system that needs to transmit data signals and reference signals to another entity. For example Figure 1 The communication system shown.

[0186] See also Figure 1 As shown, a base station (BS) and UE1-UE6 form a communication system. In this communication system, the base station sends scheduling messages to one or more of UE1-UE6. Furthermore, UE4-UE6 can also form a communication system, in which UE5 can send scheduling information to one or more of UE4 and UE6.

[0187] In addition, the terminal involved in the embodiments of the present application may also be referred to as an access terminal, user equipment (UE), user unit, mobile device, etc. The terminal may be a bandwidth-reduced low-complexity (BL) terminal, a coverage-enhanced (CE) terminal, or a machine type communication (MTC) terminal, etc. For the sake of convenience, the present application uses UE when describing the terminal.

[0188] The network device in the embodiment of the present application is an entity for receiving or sending signals on the network side, such as a base station. The base station can be a base station (English: Base Transceiver Station, referred to as: BTS) in a global system for mobile communications (English: Global System for Mobile communication, referred to as: GSM) system or a code division multiple access (English: Code Division Multiple Access, referred to as: CDMA) system, or a base station (NodeB) in a wideband code division multiple access (English: Wideband Code Division Multiple Access, referred to as: WCDMA) system, or an evolved base station (English: Evolutional Node B, referred to as: eNB or eNodeB) in an LTE system, or a base station device, a small base station device, a wireless access node (WiFi AP), a wireless interoperability microwave access base station (English: Worldwide Interoperability for Microwave Access Base Station, referred to as: WiMAX BS) in a future 5G network, etc., and the present application is not limited to this.

[0189] It should be noted that the multiple involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. At the same time, it should be understood that although the terms first, second, third, etc. may be used to describe various symbols in the embodiments of this application, these symbols should not be limited to these terms. These terms are only used to distinguish different symbols from each other.

[0190] In addition, it should be noted that the "guard period" involved in the embodiments of the present application can also be referred to as a guard interval. There are two types of guard times: one is the guard period for retuning used for UE tuning, and the other is the guard time included in the special subframe. The guard time in the special subframe is used for the conversion from downlink transmission to uplink transmission to avoid interference caused by the downlink signal to the uplink signal. In order to distinguish the two types of guard times in the embodiments of the present application, in the subsequent description, the guard time used for the conversion from downlink transmission to uplink transmission is referred to as the guard interval, and the guard time used for UE tuning is referred to as the guard time.

[0191] The symbols involved in the embodiments of the present application include but are not limited to orthogonal frequency division multiplexing (OFDM) symbols, sparse code division multiple access (SCMA) symbols, filtered orthogonal frequency division multiplexing (F-OFDM) symbols, and non-orthogonal multiple access (NOMA) symbols. The specific symbols can be determined according to actual conditions and will not be repeated here.

[0192] The subframe involved in the embodiments of the present application is: a subframe occupies the frequency domain resources of the entire system bandwidth in the frequency domain and is a time domain resource of a fixed time length in the time domain. The subframe may include K symbols, where the value of K can be determined according to actual conditions and is not limited here. For example, in LTE, a subframe occupies 14 consecutive symbols in the time domain, or, in a 5G system, when the subcarrier width is 30KHz / 60KHz, a subframe occupies 28 / 56 consecutive symbols in the time domain.

[0193] Subframes may include uplink subframes, downlink subframes, and special subframes. Uplink subframes are used to transmit uplink signals, and downlink subframes are used to transmit downlink signals.

[0194] Special subframes are divided into three parts in the time domain: downlink pilot time slot (DwPTS), guard period (GP), and uplink pilot time slot (UwPTS).

[0195] Among them, DwPTS is used for downlink transmission. No symbols are transmitted in GP. It is used for the conversion from downlink transmission to uplink transmission to avoid interference caused by downlink signals to uplink signals. UpPTS is used for uplink transmission.

[0196] In a normal cyclic prefix (CP) configuration, DwPTS, GP, and UpPTS have a total of 14 symbols. In an extended CP configuration, DwPTS, GP, and UpPTS have a total of 12 symbols. The number of DwPTS, GP, and UpPTS symbols is statically configured by the base station. UpPTS can have a maximum of 6 symbols. For example, a possible configuration in a normal CP is: DwPTS = 3 symbols, GP = 5 symbols, and UpPTS = 6 symbols.

[0197] The following is a detailed description of the scenarios involved in the embodiments of the present application.

[0198] Taking FeMTC and eMTC systems as an example, there are BL terminal devices or CE terminal devices in FeMTC and eMTC systems. The uplink bandwidth supported by these types of terminal devices may be smaller than the system bandwidth. Among them, the system bandwidth can be considered as the maximum total bandwidth supported by the communication system. Since SRS transmission resources are scheduled by the base station, after base station scheduling, it is possible that part (or all) of the SRS transmission bandwidth is not within the transmission bandwidth supported by the terminal device, thus requiring the terminal device to tune. In one scenario, the terminal device tunes on different subframes, and in another scenario, the terminal device tunes in special subframes.

[0199] Scenario 1: The terminal device tunes on different subframes

[0200] See also Figure 2A As shown, the base station schedules terminal device 1 to transmit SRS on certain frequency domain resources of the last two symbols of subframe n, and schedules terminal device 1 to transmit physical uplink control channel (English: Physical Uplink Control Channel, abbreviated: PUCCH) or physical uplink shared channel (English: Physical Uplink Shared Channel, abbreviated: PUSCH) on the first two symbols of subframe n+1. The uplink transmission frequency domain resources that terminal device 1 can support are the frequency domain resources used to transmit PUCCH or PUSCH.

[0201] from Figure 2AIt can be seen that the frequency domain resources where the SRS is transmitted exceed the frequency domain resources that the terminal device 1 can support. If the time required for the terminal device to tune is B = 1 symbol (B represents the number of symbols required for the terminal device to tune), the terminal device needs one symbol as a protection time during the tuning process, and the terminal device does not send data during the protection time. If the time required for tuning is B = 2 symbols, the terminal device needs two symbols as protection time during the tuning process. Of course, if the terminal device needs 0 symbols to tune, the terminal device can successfully send all required SRS and PUCCH or PUSCH during the tuning process. Taking the example of the time required for the terminal device to tune as one symbol, the existing scheme always gives priority to not sending SRS symbols, thereby generating protection time on the symbols used to send SRS, see Figure 2A As shown, the SRS that needs to be sent on the last symbol of subframe n will not be sent.

[0202] It should be noted that in scenario 1, subframe n can be either an uplink subframe or a special subframe, and this embodiment of the application does not specifically limit this. Subframe n+1 can be either an uplink subframe or a special subframe, and this embodiment of the application does not specifically limit this.

[0203] Scenario 2: The terminal device tunes in a special subframe

[0204] SRS can be transmitted in the UpPTS part of a special subframe, and can be transmitted in up to 6 symbols of the UpPTS. However, during the base station scheduling process, the transmission bandwidth of the SRS in the UpPTS of a special subframe of the terminal device may exceed the downlink transmission bandwidth of the terminal device in the DwPTS of the special subframe. Figure 2B As shown, the base station schedules the terminal device 1 to transmit SRS on certain frequency domain resources of the last two symbols of the UpPTS of a special subframe, and receives PDCCH or PDSCH in the DwPTS of the special subframe. The frequency domain resources used by the terminal device to send SRS are completely different or partially different from the frequency domain resources used by the terminal device to receive PDCCH or PDSCH, resulting in the SRS transmission band not being in the downlink transmission band of the terminal device 1. In this case, the terminal device needs to tune and change the frequency domain resource position of its own transmission signal to realize symbol transmission on different frequency bands. Taking the time required for terminal device tuning as one symbol as an example, the existing scheme always gives priority to not sending SRS symbols, thereby generating protection time on the symbols used to send SRS, see Figure 2B As shown, the SRS that the terminal device needs to transmit in the UpPTS will not be sent.

[0205] However, considering the performance requirements of the communication system, SRS coverage enhancement is required, which requires repeated transmission of SRS signals on multiple symbols in the time domain. If the SRS signal is not transmitted first when the terminal device is tuned, the communication system's requirements for SRS coverage enhancement will not be met.

[0206] Based on this, embodiments of the present application provide a tuning method and apparatus that, during the terminal device tuning process, prioritize the transmission of other, relatively unimportant signals, thereby meeting the communication system's need for enhanced SRS coverage. The method and apparatus are based on the same inventive concept. Since the method and apparatus solve similar problems, the implementation of the apparatus and method can refer to each other, and any repetitions will not be repeated.

[0207] The solution provided in the embodiments of the present application is described in detail below with reference to the accompanying drawings.

[0208] Based on the above scenario 1, a tuning method provided in the embodiment of the present application is shown in FIG. Figure 3 As shown, the method includes:

[0209] S301, the terminal device determines a first resource and a second resource.

[0210] Among them, the first resource is used to send a sounding reference signal, and the first resource is determined by the first frequency domain resource and at least one symbol in the first subframe, and the at least one symbol includes the last symbol in the first subframe; the second resource is used to send a physical uplink shared channel or a physical uplink control channel, and the second resource is determined by the second frequency domain resource and the second subframe, the first subframe is the first subframe of two consecutive subframes, and the second subframe is the second subframe of the two consecutive subframes.

[0211] It should be noted that all or part of the frequency domain resources in the first frequency domain resources are not in the second frequency domain resources, or the first frequency domain resources and the second frequency domain resources do not completely overlap.

[0212] The first frequency domain resources and the second frequency domain resources do not completely overlap, which means that the subcarrier range where the first frequency domain resources are located has no overlapping part with the subcarrier range where the second frequency domain resources are located, or the subcarrier range where the first frequency domain resources are located has both overlapping parts and non-overlapping parts with the subcarrier range where the second frequency domain resources are located.

[0213] S302, the terminal device determines a protection time for tuning on the first subframe and / or the second subframe; the protection time is used to prohibit the terminal from sending an uplink signal within the protection time.

[0214] Optionally, the terminal device determines a guard time for tuning in the first subframe and / or the second subframe according to a tuning capability of the terminal device, wherein the tuning capability of the terminal device may specifically be the number of symbols required for tuning by the terminal device.

[0215] In this embodiment of the present application, the bandwidth of the first frequency domain resource is equal to the transmission bandwidth of the sounding reference signal, and the second frequency domain resource may be a narrowband resource. The bandwidth of the narrowband resource is equal to the maximum bandwidth supported by the terminal, or the bandwidth of the narrowband resource is equal to the maximum number of physical resource blocks supported by the terminal.

[0216] Narrowband resources are relative to system bandwidth. When UE capabilities are limited, such as by cost or power consumption constraints, narrowband resources can be used for the second frequency domain. Since a larger supported bandwidth increases costs and power consumption, using narrowband resources can reduce costs and overall power consumption, while also increasing transmit power within a frequency band to improve uplink coverage.

[0217] In one possible implementation, the terminal device determines the protection time for tuning on at least the second subframe. In the prior art, when tuning requires protection time, priority is given to giving up sending SRS as protection time. Generally, the last symbol or symbols of the symbols used to send SRS in the first subframe are used as protection time, that is, the SRS signal is prohibited from being sent on the last symbol or the last few symbols of the first subframe, and no other uplink signals are sent. The solution provided by the embodiment of the present application adopts a method of giving priority to retaining SRS, no longer giving priority to giving up SRS, and giving priority to giving up the first symbol or the first few symbols in the second subframe as protection time.

[0218] Optionally, when the terminal device requires one symbol as a guard time for tuning, in step S302, the terminal device determines the guard time for tuning on the first subframe and / or the second subframe, which may be specifically implemented as follows:

[0219] The terminal device determines that the protection time is the first symbol of multiple symbols used to send PUSCH or PUCCH in the second subframe.

[0220] It should be noted that, if the PUCCH or PUSCH is sent in the second subframe, it is generally sent starting from the first symbol of the second subframe.

[0221] Specifically, the terminal device determines that tuning requires one symbol based on its own tuning capability, and thus uses the first symbol of the second subframe as a guard time for tuning. That is, the terminal device is prohibited from sending uplink signals on the first symbol of the second subframe.

[0222] For example: See Figure 2A As shown, the first subframe is Figure 2A In subframe n, the second subframe is Figure 2B Therefore, in the above method, the terminal device needs one symbol as the protection time for tuning, so the terminal device uses the first symbol in subframe n+1 as the protection time to prohibit the terminal device from sending uplink signals on the first symbol of subframe n+1. Figure 4 shown.

[0223] Optionally, when the terminal device requires two symbols as a guard time for tuning, in step S302, the terminal device determines the guard time for tuning on the first subframe and / or the second subframe, which may be specifically implemented as follows:

[0224] If the second resource is used to send PUCCH, the terminal device determines that the protection time is located at the last symbol in the first subframe and the first symbol of multiple symbols used to send the PUCCH in the second subframe.

[0225] For example, see Figure 5A-5B As shown, the first subframe is Figure 5A as well as Figure 5B The second subframe is Figure 5A and Figure 5B The SRS is sent on the last two symbols of subframe n. Since the terminal device needs two symbols for tuning, according to the solution provided by the prior art, see Figure 5A As shown, the terminal device no longer sends any uplink signal on the last two symbols of subframe n, that is, the last two symbols of subframe n are used as protection time. Figure 5B As shown, when the first two symbols of subframe n+1 are used to send PUCCH, in the scenario of enhanced SRS coverage, on the one hand, it is necessary to retain the transmission of SRS as much as possible, and on the other hand, the signal carried in PUCCH is a control signal, and the importance of the control signal is relatively high, so it is also necessary to retain the transmission of the PUCCH signal as much as possible. Therefore, one symbol in SRS and PUCCH is selected to abandon transmission. Specifically, the terminal device uses the last symbol in subframe n and the first symbol in subframe n+1 as protection time to prohibit the terminal device from sending uplink signals.

[0226] Optionally, when the terminal device requires two symbols as a guard time for tuning, in step S302, the terminal device determines the guard time for tuning on the first subframe and / or the second subframe, which may be specifically implemented as follows:

[0227] If the second resource is used to send a physical uplink shared channel, the terminal device determines that the protection time is located in the second subframe for sending the first two symbols of multiple consecutive symbols in the PUSCH.

[0228] For example, see Figures 6A and 6B As shown, the first subframe is Figure 6A as well as Figure 6B The second subframe is Figure 6A and Figure 6B The SRS is sent on the last two symbols of subframe n. Since the terminal device needs two symbols for tuning, according to the solution provided by the prior art, see Figure 6A As shown, the terminal device no longer sends any uplink signal on the last two symbols of subframe n, that is, the last two symbols of subframe n are used as protection time. Figure 6B As shown, when the first two symbols of subframe n+1 are used to send PUSCH, since it is necessary to retain the transmission of SRS as much as possible in the scenario of enhanced SRS coverage, and the signal carried in PUSCH is a data signal, the importance of the data signal is relatively low, so it is chosen to abandon the transmission of the first two symbols of PUSCH. Specifically, the terminal device uses the first two symbols in subframe n+1 as protection time to prohibit the terminal device from sending uplink signals.

[0229] In the above scenario 1, see Figure 7A As shown, the network device determines the protection time required for the terminal device to tune, thereby determining that there is no uplink signal of the terminal device during the protection time. Specifically:

[0230] S701: The network device determines a protection time for the terminal device to tune from the first resource to the second resource.

[0231] The description of the first resource, the second resource and the protection time can be found in Figure 3 The description in the illustrated embodiment will not be repeated here for the embodiments of the present application.

[0232] S702: The network device determines that there is no uplink signal from the terminal device within the protection time.

[0233] In one possible design, before the terminal device determines a guard time for tuning on the first subframe and / or the second subframe in step S302, the method may further include:

[0234] The terminal device receives first indication information sent by a network device, where the first indication information is used to instruct the terminal device to determine the protection time on the second subframe and / or on the second subframe.

[0235] Specifically, the network device may send the first indication information to the terminal device after determining the protection time for the terminal device to tune from the first resource to the second resource in step S701. Figure 7B As shown:

[0236] S710: The network device determines a protection time for the terminal device to tune from the first resource to the second resource.

[0237] S720: The network device sends the first indication information to the terminal device.

[0238] S730, after the terminal device receives the first indication information sent by the network device, the terminal device determines the first resource and the second resource.

[0239] S740: The terminal device determines a protection time for tuning in the first subframe and / or the second subframe.

[0240] Among them, the first indication information is used to instruct the terminal device to adopt the solution provided in this application to determine the protection time, that is, to determine the protection time by giving priority to retaining the transmitted SRS.

[0241] Optionally, when the network device sends the first indication information to the terminal device, the network device may carry the first indication information in radio resource control (RRC) signaling and send it to the terminal device, and may also include the first indication information in downlink control information (DCI) when sending it to the terminal device.

[0242] Specifically, the first indication information is used to indicate that the guard time is located in the first symbol of a plurality of consecutive symbols used to send a physical uplink shared channel or a physical uplink control channel in the second subframe, or,

[0243] The first indication information is used to indicate that the protection time is located at the last symbol of the first subframe and the first symbol of multiple symbols used by the terminal device to send a physical uplink control channel in the second subframe, or,

[0244] The first indication information is used to indicate that the protection time is located in the first two symbols of a plurality of symbols used by the terminal device to send a physical uplink shared channel in the second subframe.

[0245] Optionally, the network device may also send a second indication message to the terminal device, wherein the second indication message is used to instruct the terminal device to adopt the existing scheme to determine the protection time, that is, to determine the protection time by giving priority to giving up the transmission of SRS, so that after receiving the second indication message, the terminal device determines the protection time by giving priority to giving up the transmission of SRS.

[0246] Specifically, the second indication information may be used to indicate that the guard time is located on the last symbol in the first subframe; or,

[0247] If the sounding reference signal is sent only on the last symbol in the first subframe, the second indication information is used to indicate that the guard time is located on the last symbol in the first subframe and the first symbol in the second subframe; or

[0248] If the sounding reference signal is sent only on at least two symbols on the first subframe, the at least two symbols include the last symbol on the first subframe, and the second indication information is used to indicate that the protection time is located on a plurality of consecutive symbols from the first symbol to the last symbol of the at least two symbols on the first subframe.

[0249] Among them, the minimum size of the field (indication bit) occupied by the first indication information or the second indication information can be one bit. For example, the indication bit can be called Flag. When Flag=1, it represents the first indication information, which is used to indicate that the protection time is determined by giving priority to retaining the SRS. When Flag=0, it represents the second indication information, which is used to indicate that the protection time is determined by giving priority to giving up the transmission of the SRS. It is also possible to use Flag=1 to represent the second indication information and Flag=0 to represent the second indication information. The embodiment of the present application does not make specific restrictions on this. In addition, the embodiment of the present application does not make specific restrictions on the size of the field occupied by the indication information and the identification of the indication bit.

[0250] For example, it is assumed that the terminal device needs two symbols for tuning and sends PUCCH in the second subframe. The terminal device sends at least two SRSs in the first subframe. Figure 8 As shown, Flag=1 represents the first indication information, which is used to indicate that the protection time is determined by giving priority to retaining the SRS. Flag=0 represents the second indication information, which is used to indicate that the protection time is determined by giving priority to giving up transmitting the SRS. Figure 8Subframe n represents the first subframe, and subframe n+1 represents the second subframe. SRS is sent on the last two symbols of subframe n. Since the terminal device requires two symbols for tuning, when Flag = 0, the terminal device no longer sends any uplink signals on the last two symbols of subframe n, that is, the last two symbols of subframe n are used as protection time. When Flag = 1, one symbol is selected in SRS and PUCCH respectively to abandon transmission. Specifically, the terminal device uses the last symbol in subframe n and the first symbol in subframe n+1 as protection time to prohibit the terminal device from sending uplink signals.

[0251] In the above implementation, by carrying indication information in high-layer signaling to indicate the terminal device tuning method, the terminal device can flexibly select symbols that need to be retained and symbols that need to be abandoned during the tuning process, thereby improving flexibility.

[0252] Based on the above scenario 2, a tuning method is provided in the embodiment of the present application, see Figure 9 As shown, the method includes:

[0253] S901: The terminal device determines a first resource and a second resource.

[0254] Among them, the first resource is used to receive a physical downlink control channel or a physical downlink shared channel, and the first resource is determined by the first frequency domain resource and M consecutive symbols of the downlink pilot time slot in the special subframe; the second resource is used to send a sounding reference signal, and the second resource is determined by the second frequency domain resource and the uplink pilot time slot in the special subframe, and all or part of the frequency domain resources in the second frequency domain resource are not in the first frequency domain resource.

[0255] It should be noted that all or part of the frequency domain resources in the first frequency domain resources are not in the second frequency domain resources, or the first frequency domain resources and the second frequency domain resources do not completely overlap.

[0256] The first frequency domain resources and the second frequency domain resources do not completely overlap, which means that the subcarrier range where the first frequency domain resources are located has no overlapping part with the subcarrier range where the second frequency domain resources are located, or the subcarrier range where the first frequency domain resources are located has both overlapping parts and non-overlapping parts with the subcarrier range where the second frequency domain resources are located.

[0257] S902: The terminal device determines a guard time for tuning on the last N consecutive symbols in the downlink pilot time slot or on the uplink pilot time slot.

[0258] The protection time is used to prohibit the terminal device from sending or receiving signals within the protection time, where M and N are both positive integers, and M is greater than or equal to N.

[0259] Optionally, the terminal device determines a guard time for tuning on the last N consecutive symbols in the downlink pilot time slot or on the uplink pilot time slot according to the tuning capability of the terminal device, wherein the tuning capability of the terminal device may specifically be the number of symbols required for tuning by the terminal device.

[0260] In this embodiment of the present application, the bandwidth of the first frequency domain resource is equal to the transmission bandwidth of the sounding reference signal, and the second frequency domain resource may be a narrowband resource. The bandwidth of the narrowband resource is equal to the maximum bandwidth supported by the terminal, or the bandwidth of the narrowband resource is equal to the maximum number of physical resource blocks supported by the terminal.

[0261] Narrowband resources are relative to system bandwidth. When UE capabilities are limited, such as by cost or power consumption constraints, narrowband resources can be used for the second frequency domain. Since a larger supported bandwidth increases costs and power consumption, using narrowband resources can reduce costs and overall power consumption, while also increasing transmit power within a frequency band to improve uplink coverage.

[0262] For example, if the symbols required for tuning by the terminal device are two symbols, when the terminal device determines the guard time for tuning on the last N consecutive symbols in the downlink pilot time slot, the terminal device determines the last two symbols in the downlink pilot time slot as the guard time for tuning. Figure 10 As shown, the signal that the terminal device should receive in DwPTS is PDCCH or PDSCH, and the terminal device transmits SRS on the last two symbols of UpPTS. Therefore, the terminal device no longer receives PDCCH or PDSCH on the last two symbols of DwPTS, and uses them as protection time, and transmits SRS normally on the last two symbols of UpPTS, thereby ensuring enhanced SRS coverage.

[0263] In the above scenario 2, see Figure 11A As shown, the network device determines the protection time required for the terminal device to tune, thereby determining that there is no signal of the terminal device during the protection time. Specifically:

[0264] S1101, the network device determines a protection time for the terminal device to tune from the first resource to the second resource.

[0265] The description of the first resource, the second resource and the protection time can be found in Figure 9 The description in the illustrated embodiment will not be repeated here for the embodiments of the present application.

[0266] S1102: The network device determines that there is no signal from the terminal device within the protection time.

[0267] In one possible design, before the terminal device determines a guard time for tuning on the last N consecutive symbols in the downlink pilot timeslot in step S1102, the method may further include:

[0268] The network device sends first indication information to the terminal device, where the first indication information is used to instruct the terminal device to determine the protection time on the last N consecutive symbols in the downlink pilot time slot.

[0269] Thus, the terminal device receives the first indication information sent by the network device and determines the protection time based on the first indication information.

[0270] Specifically, the network device may send the first indication information to the terminal device after determining the protection time for the terminal device to tune from the first resource to the second resource in step S1101. Figure 11B As shown:

[0271] S1110, the network device determines a protection time for the terminal device to tune from the first resource to the second resource.

[0272] S1120, the network device sends the first indication information to the terminal device.

[0273] S1130, after the terminal device receives the first indication information sent by the network device, the terminal device determines the first resource and the second resource.

[0274] S1140: The terminal device determines a protection time for tuning on the last N consecutive symbols in the downlink pilot time slot based on the first indication information.

[0275] Among them, the first indication information is used to instruct the terminal device to adopt the solution provided in this application to determine the protection time, that is, to determine the protection time by retaining the transmission SRS.

[0276] Optionally, when the network device sends the first indication information to the terminal device, the network device may carry the first indication information in RRC signaling and send it to the terminal device, or may include the first indication information in the DCI and send it to the terminal device when sending DCI to the terminal device.

[0277] Optionally, the network device may also send a second indication message to the terminal device, wherein the second indication message is used to instruct the terminal device to adopt the existing scheme to determine the protection time, that is, to determine the protection time by giving up transmitting SRS, so that after receiving the second indication message, the terminal device determines the protection time by giving up transmitting SRS.

[0278] Specifically, before the terminal device determines the protection time for tuning on the uplink pilot time slot, the network device sends a second indication message to the terminal device, so that the terminal device receives the second indication message; the second indication message is used to indicate that the protection time is located in the uplink pilot time slot.

[0279] If the sounding reference signal is sent on only one symbol in the uplink pilot time slot, the second indication information is used to indicate that the guard time is located on the one symbol in the uplink pilot time slot; or,

[0280] If the sounding reference signal is sent on at least two symbols in the uplink pilot time slot, the second indication information is used to indicate that the protection time is located on a plurality of consecutive symbols from the first symbol to the last symbol of the at least two symbols in the uplink pilot time slot.

[0281] Among them, the minimum size of the field (indication bit) occupied by the first indication information or the second indication information can be one bit. For example, the indication bit can be called Flag. When Flag=1, it represents the first indication information, which is used to indicate that the protection time is determined by giving priority to retaining the SRS. When Flag=0, it represents the second indication information, which is used to indicate that the protection time is determined by giving priority to giving up the transmission of the SRS. It is also possible to use Flag=1 to represent the second indication information and Flag=0 to represent the second indication information. The embodiment of the present application does not make specific restrictions on this. In addition, the embodiment of the present application does not make specific restrictions on the size of the field occupied by the indication information and the identification of the indication bit.

[0282] Based on the same inventive concept as the embodiment corresponding to the method provided in scenario 1, the embodiment of the present application further provides a tuning device, which is applied to a terminal device, see Figure 12 Shown, including:

[0283] A first determining module 1201 is configured to determine a first resource and a second resource; wherein the first resource is used to send a sounding reference signal, the first resource is determined by a first frequency domain resource and at least one symbol in a first subframe, the at least one symbol including the last symbol in the first subframe; the second resource is used to send a physical uplink shared channel or a physical uplink control channel, the second resource is determined by a second frequency domain resource and a second subframe, all or part of the frequency domain resources in the first frequency domain resource are not in the second frequency domain resource; the first subframe is the first subframe of two consecutive subframes, and the second subframe is the second subframe of the two consecutive subframes;

[0284] The second determining module 1202 is configured to determine a guard time for tuning in the first subframe and / or the second subframe; the guard time is used to prohibit the terminal from sending an uplink signal within the guard time.

[0285] In one possible design, the second determination module 1202 is specifically used to determine that the protection time is located on the first symbol of multiple symbols used to send a physical uplink shared channel or a physical uplink control channel in the second subframe.

[0286] In one possible design, the second resource is used to send a physical uplink control channel, and the second determination module 1202 is specifically used to determine that the protection time is located at the last symbol in the first subframe and the first symbol of multiple symbols in the second subframe used to send the physical uplink control channel.

[0287] In one possible design, the second resource is used to send a physical uplink shared channel, and the second determination module 1202 is specifically used to determine that the protection time is located in the second subframe for sending the first two symbols of multiple consecutive symbols in the physical uplink shared channel.

[0288] In one possible design, it also includes:

[0289] The receiving module 1203 is used to receive first indication information before the second determination module 1202 determines the protection time for tuning on the first subframe and / or the second subframe, wherein the first indication information is used to instruct the terminal device to determine the protection time on the second subframe and / or the second subframe.

[0290] In one possible design, the receiving module 1203 is specifically configured to:

[0291] receiving radio resource control signaling, where the radio resource control signaling carries the first indication information; or,

[0292] Downlink control information is received, where the downlink control information includes the first indication information.

[0293] In one possible design, it also includes:

[0294] A receiving module 1203 is configured to receive second indication information before the second determining module 1202 determines the guard time on the first subframe and / or the second subframe;

[0295] The second indication information is used to indicate that the guard time is located on the last symbol in the first subframe; or,

[0296] If the sounding reference signal is sent only on the last symbol in the first subframe, the second indication information is used to indicate that the guard time is located on the last symbol in the first subframe and the first symbol in the second subframe; or

[0297] If the sounding reference signal is sent only on at least two symbols on the first subframe, the at least two symbols include the last symbol on the first subframe, and the second indication information is used to indicate that the protection time is located on a plurality of consecutive symbols from the first symbol to the last symbol of the at least two symbols on the first subframe.

[0298] In one possible design, the receiving module 1203 is specifically configured to:

[0299] receiving radio resource control signaling, where the radio resource control signaling carries the second indication information; or

[0300] Downlink control information is received, where the downlink control information includes the second indication information.

[0301] In one possible design, the bandwidth of the first frequency domain resource is equal to the transmission bandwidth of the sounding reference signal, and the second frequency domain resource is a narrowband resource.

[0302] In one possible design, the bandwidth of the narrowband resources is equal to the maximum bandwidth supported by the terminal device, or the bandwidth of the narrowband resources is equal to the maximum number of physical resource blocks supported by the terminal device.

[0303] In one possible design, the terminal device is a bandwidth reduction low complexity BL terminal, or a coverage enhancement CE terminal, or a machine type communication MTC terminal.

[0304] Based on the same inventive concept as the embodiment corresponding to the method provided in Scenario 2, the embodiment of the present application further provides a tuning device, which is applied to a terminal device, see Figure 13 Shown, including:

[0305] A first determining module 1301 is configured to determine a first resource and a second resource; wherein the first resource is used to receive a physical downlink control channel or a physical downlink shared channel, and the first resource is determined by a first frequency domain resource and M consecutive symbols of a downlink pilot time slot in a special subframe; and the second resource is used to send a sounding reference signal, and the second resource is determined by a second frequency domain resource and an uplink pilot time slot in the special subframe, and all or part of the frequency domain resources in the second frequency domain resource are not in the first frequency domain resource;

[0306] The second determination module 1302 is used to determine the protection time for tuning on the last consecutive N symbols in the downlink pilot time slot or on the uplink pilot time slot; the protection time is used to prohibit the terminal device from sending or receiving signals within the protection time, where M and N are both positive integers, and M is greater than or equal to N.

[0307] In one possible design, it also includes:

[0308] The receiving module 1303 is used to receive first indication information before the second determination module 1302 determines the protection time for tuning on the last consecutive N symbols in the downlink pilot time slot, wherein the first indication information is used to instruct the terminal device to determine the protection time on the last consecutive N symbols in the downlink pilot time slot.

[0309] In one possible design, the receiving module 1303 is specifically configured to:

[0310] receiving radio resource control signaling, where the radio resource control signaling carries the first indication information; or

[0311] Downlink control information is received, where the downlink control information includes the first indication information.

[0312] In one possible design, it also includes:

[0313] A receiving module 1303 is configured to receive second indication information before the second determining module 1302 determines a guard time for tuning on the uplink pilot time slot;

[0314] The second indication information is used to indicate that the guard time is located in the uplink pilot time slot.

[0315] In one possible design, the receiving module 1303 is specifically configured to:

[0316] receiving radio resource control signaling, where the radio resource control signaling carries the second indication information; or

[0317] Downlink control information is received, where the downlink control information includes the second indication information.

[0318] In one possible design, the first frequency domain resource is a narrowband resource, and the bandwidth of the second frequency domain resource is equal to the transmission bandwidth of the sounding reference signal.

[0319] In one possible design, the bandwidth of the narrowband resources is equal to the maximum bandwidth supported by the terminal device, or the bandwidth of the narrowband resources is equal to the maximum number of physical resource blocks supported by the terminal device.

[0320] In one possible design, the terminal device is a bandwidth reduction low complexity BL terminal device, or a coverage enhancement CE terminal device, or a machine type communication MTC terminal device.

[0321] The division of modules in the embodiments of the present application is illustrative and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional modules in the various embodiments of the present application may be integrated into a single processor, or may exist physically separately, or two or more modules may be integrated into a single module. The aforementioned integrated modules may be implemented in the form of hardware or software functional modules.

[0322] like Figure 14 As shown, the terminal device may include a processor 1420. Figure 12 or Figure 13 The hardware of the entity corresponding to the module shown may be a processor 1420. The processor 1420 may be a central processing unit (CPU) or a digital processing module, etc. The terminal device may further include a transceiver 1410, through which the processor 1420 receives data and messages. It also includes a memory 1430 for storing programs executed by the processor 1420. The memory 1430 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), or a volatile memory (RAM), such as a random-access memory (RAM). The memory 1430 is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0323] The processor 1420 is used to execute the program code stored in the memory 1430, specifically to execute Figures 3 to 11B The method executed by the terminal device in the embodiment shown. Figures 3 to 11B The method described in the illustrated embodiment is implemented and will not be described in detail in this application.

[0324] The specific connection medium between the transceiver 1410, the processor 1420 and the memory 1430 is not limited in the embodiment of the present application. Figure 14 The memory 1430, the processor 1420 and the transceiver 1410 are connected via a bus 1440. Figure 14 The connections between the other components are shown in bold lines, which are only for illustration and are not intended to be limiting. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, Figure 14 Only one thick line is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0325] Based on the same inventive concept as the embodiment corresponding to the method provided in scenario 1, the embodiment of the present application provides a tuning device, which is applied to a network device, see Figure 15 Shown, including:

[0326] The first determination module 1501 is used to determine a protection time for a terminal device to tune from a first resource to a second resource, where the protection time is located on a first subframe and / or a second subframe, wherein the protection time is used to prohibit the terminal device from sending an uplink signal within the protection time, the first resource is used by the terminal device to send a sounding reference signal, the first resource is determined by a first frequency domain resource and at least one symbol in the first subframe, the at least one symbol includes the last symbol in the first subframe; the second resource is used by the terminal device to send a physical uplink control channel or a physical uplink shared channel, the second resource is determined by a second frequency domain resource and the second subframe, all or part of the frequency domain resources in the first frequency domain resource are not in the second frequency domain resource; the first subframe is the previous subframe of two consecutive subframes, and the second subframe is the next subframe of the two consecutive subframes;

[0327] The second determining module 1502 is configured to determine that there is no uplink signal of the terminal device within the protection time.

[0328] In one possible design, the device further includes:

[0329] The sending module 1503 is used to send first indication information to the terminal device, where the first indication information is used to indicate that the protection time is located on the first subframe and / or the second subframe.

[0330] In one possible design, the first indication information is used to indicate that the protection time is located in the first symbol of a plurality of consecutive symbols used to send a physical uplink shared channel or a physical uplink control channel in the second subframe.

[0331] In one possible design, the first indication information is used to indicate that the protection time is located in the last symbol of the first subframe and the first symbol of multiple symbols in the second subframe used for the terminal device to send a physical uplink control channel.

[0332] In one possible design, the first indication information is used to indicate that the protection time is located in the first two symbols of multiple symbols used by the terminal device to send a physical uplink shared channel in the second subframe.

[0333] In one possible design, the sending module 1503 is specifically configured to:

[0334] Sending radio resource control signaling to the terminal device, where the radio resource control signaling carries the first indication information; or,

[0335] Send downlink control information to the terminal device, where the downlink control information includes the first indication information.

[0336] In one possible design, the device further includes:

[0337] The sending module 1503 is configured to send second indication information to the terminal device;

[0338] The second indication information is used to instruct the terminal device to generate a guard time on the last symbol in the first subframe; or,

[0339] If the sounding reference signal is sent only on the last symbol of the first subframe, the second indication information is used to indicate that the guard time is located on the last symbol of the first subframe and the first symbol of the second subframe; or,

[0340] If the sounding reference signal is sent on at least two consecutive symbols of the first subframe, the at least two consecutive symbols include the last two symbols in the first subframe, and the second indication information is used to indicate that the protection time is located on the last two symbols of the first subframe.

[0341] In one possible design, the sending module 1503 is specifically configured to:

[0342] Sending radio resource control signaling to the terminal device, where the radio resource control signaling carries the second indication information; or,

[0343] Send downlink control information to the terminal device, where the downlink control information includes the second indication information.

[0344] Based on the same inventive concept as the embodiment corresponding to the method provided in Scenario 2, the embodiment of the present application provides a tuning device, which is applied to a network device, see Figure 16 As shown, including:

[0345] The first determination module 1601 is used to determine the protection time for the terminal device to tune from the first resource to the second resource, where the protection time is located on N consecutive symbols in the downlink pilot time slot of the special subframe or the protection time is located in the uplink pilot time slot, and the protection time is used to prohibit the terminal device from sending or receiving signals within the protection time; wherein the first resource is used to receive a physical downlink control channel or a physical downlink shared channel, and the first resource is determined by a first frequency domain resource and M consecutive symbols of the downlink pilot time slot; the second resource is used to send a sounding reference signal, and the second resource is determined by a second frequency domain resource and the uplink pilot time slot in the special subframe, and all or part of the frequency domain resources in the second frequency domain resource are not in the first frequency domain resource; wherein M and N are both positive integers, and M is greater than or equal to N;

[0346] The second determining module 1602 is configured to determine whether the signal of the terminal device does not exist within the protection time.

[0347] In one possible design, the device further includes:

[0348] The sending module 1603 is used to send indication information to the terminal device, where the indication information is used to indicate that the protection time is located on the last N consecutive symbols in the downlink pilot time slot or indicates that the protection time is located in the uplink pilot time slot.

[0349] In one possible design, the sending module 1603 is specifically configured to:

[0350] Sending radio resource control signaling to the terminal device, where the radio resource control signaling carries the indication information; or,

[0351] Send downlink control information to the terminal device, where the downlink control information includes the indication information.

[0352] The division of modules in the embodiments of the present application is illustrative and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional modules in the various embodiments of the present application may be integrated into a single processor, or may exist physically separately, or two or more modules may be integrated into a single module. The aforementioned integrated modules may be implemented in the form of hardware or software functional modules.

[0353] like Figure 17 As shown, the network device may include a processor 1720. Figure 15 or Figure 16 The hardware of the entity corresponding to the module shown may be a processor 1720. The processor 1720 may be a CPU, or a digital processing module, etc. The network device may further include a transceiver 1710, through which the processor 1720 receives data and messages. It also includes: a memory 1730 for storing programs executed by the processor 1720. The memory 1730 may be a non-volatile memory, such as an HDD or SSD, or a volatile memory, such as a RAM. The memory 1730 is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0354] The processor 1720 is used to execute the program code stored in the memory 1730, specifically to execute Figures 3 to 11B The method performed by the network device in the embodiment shown. Figures 3 to 11B The method described in the illustrated embodiment is implemented and will not be described in detail in this application.

[0355] The specific connection medium between the transceiver 1710, the processor 1720 and the memory 1730 is not limited in the embodiment of the present application. Figure 17 The memory 1730, the processor 1720 and the transceiver 1710 are connected via a bus 1740. Figure 17 The connections between the other components are shown in bold lines, which are only for illustration and are not intended to be limiting. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, Figure 17 Only one thick line is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0356] In this embodiment, rather than giving up SRS transmission, SRS transmission is prioritized. This prioritizes giving up signals that are less important than SRS, thereby enhancing SRS coverage while enabling terminal tuning. Furthermore, the network device instructs the terminal device via higher-layer signals whether to give up or keep SRS transmission, improving flexibility in symbol loss and retention during the tuning process.

[0357] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0358] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0359] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0360] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0361] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the scope of the embodiments of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A tuning method, applied to a terminal device, characterized in that: include: Determine a first resource and a second resource; wherein the first resource is used to receive a physical downlink control channel or a physical downlink shared channel, and the first resource is determined by a first frequency domain resource and M consecutive symbols of a downlink pilot time slot in a special subframe; the second resource is used to send a sounding reference signal, and the second resource is determined by a second frequency domain resource and an uplink pilot time slot in the special subframe, and all or part of the frequency domain resources in the second frequency domain resource are not in the first frequency domain resource; A protection time for tuning is determined on the last consecutive N symbols in the downlink pilot time slot or on the uplink pilot time slot; the protection time is used to prohibit the terminal device from sending or receiving signals within the protection time, where M and N are both positive integers, and M is greater than or equal to N.

2. The method according to claim 1, wherein Before determining a guard time for tuning on the last N consecutive symbols in the downlink pilot time slot, the method further includes: Receive first indication information, where the first indication information is used to instruct the terminal device to determine the protection time on the last N consecutive symbols in the downlink pilot time slot.

3. The method according to claim 2, wherein Receiving first indication information includes: receiving radio resource control signaling, where the radio resource control signaling carries the first indication information; or Downlink control information is received, where the downlink control information includes the first indication information.

4. The method according to claim 1, wherein Before determining a guard time for tuning on the uplink pilot time slot, the method further includes: receiving second instruction information; The second indication information is used to indicate that the guard time is located in the uplink pilot time slot.

5. The method according to claim 4, wherein Receiving second indication information includes: receiving radio resource control signaling, where the radio resource control signaling carries the second indication information; or Downlink control information is received, where the downlink control information includes the second indication information.

6. The method according to any one of claims 1 to 5, characterized in that The first frequency domain resource is a narrowband resource, and the bandwidth of the second frequency domain resource is equal to the transmission bandwidth of the sounding reference signal.

7. The method according to claim 6, wherein The bandwidth of the narrowband resource is equal to the maximum bandwidth supported by the terminal device, or the bandwidth of the narrowband resource is equal to the maximum number of physical resource blocks supported by the terminal device.

8. The method according to any one of claims 1 to 5, characterized in that The terminal device is a bandwidth reduction low complexity BL terminal device, or a coverage enhancement CE terminal device, or a machine type communication MTC terminal device.

9. A tuning method, applied to a network device, characterized in that: include: Determine a protection time for a terminal device to tune from a first resource to a second resource, where the protection time is located on N consecutive symbols in a downlink pilot time slot of a special subframe or the protection time is located in an uplink pilot time slot, and the protection time is used to prohibit the terminal device from sending or receiving signals within the protection time; wherein the first resource is used to receive a physical downlink control channel or a physical downlink shared channel, and the first resource is determined by a first frequency domain resource and M consecutive symbols of the downlink pilot time slot; the second resource is used to send a sounding reference signal, and the second resource is determined by a second frequency domain resource and an uplink pilot time slot in the special subframe, and all or part of the frequency domain resources in the second frequency domain resources are not in the first frequency domain resources; Wherein M and N are both positive integers, and M is greater than or equal to N; It is determined that no signal of the terminal device exists within the protection time.

10. The method according to claim 9, wherein The method further comprises: Send indication information to the terminal device, where the indication information is used to indicate that the protection time is located on the last N consecutive symbols in the downlink pilot time slot or indicates that the protection time is located in the uplink pilot time slot.

11. The method according to claim 10, wherein Sending instruction information to the terminal device includes: Sending radio resource control signaling to the terminal device, where the radio resource control signaling carries the indication information; or, Send downlink control information to the terminal device, where the downlink control information includes the indication information.

12. A communication device, characterized in that: The communication device comprises a processor configured to read a software program stored in a memory to execute the method according to any one of claims 1 to 8.

13. A communication device, characterized in that: The communication device comprises a processor configured to read a software program stored in a memory to execute the method according to any one of claims 9 to 11.

14. A computer-readable storage medium comprising instructions, which, when executed, enable the method according to any one of claims 1 to 8 to be performed.

15. A computer-readable storage medium comprising instructions, which, when executed, enable the method according to any one of claims 9 to 11 to be performed.

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