CN114071742A

CN114071742A - Communication method and related equipment

Info

Publication number: CN114071742A
Application number: CN202010789870.7A
Authority: CN
Inventors: 张萌; 郭志恒; 刘烨
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2022-02-18
Also published as: WO2022028573A1

Abstract

The embodiment of the application discloses a communication method and related equipment. The method comprises the following steps: the terminal equipment determines a first uplink transmission time ratio X on a time division duplex TDD frequency band; determining a second uplink transmission time ratio Y according to the first uplink transmission time ratio X, wherein the second uplink transmission time ratio Y is the maximum uplink transmission time ratio of the terminal equipment on a supplementary uplink SUL frequency band; and sending a first message to a network device, where the first message is used to indicate the second uplink transmission time ratio Y, and the terminal device is configured to transmit uplink data using the TDD band and the SUL band. By adopting the embodiment of the application, the network scheduling efficiency can be improved, and the transmission efficiency can be improved.

Description

Communication method and related equipment

Technical Field

The present application relates to the field of network technologies, and in particular, to a communication method and a related device.

Background

Regulatory organizations in various countries have very strict requirements on the influence of radio frequency energy radiation of User Equipment (UE) of a mobile phone type on human bodies, and are generally specified by a Specific Absorption Rate (SAR). SAR dictates that the UE's accumulated body radiation energy cannot exceed a specified maximum over a certain time. Due to The widespread use of SAR, The 3rd generation partnership project (3 GPP) has a standardized solution for UEs to meet SAR regulations. For power class3 (PC 3) UEs, i.e. UEs that are allowed to transmit a maximum of 23dBm power, 3GPP considers that no additional solutions are needed to meet the SAR requirements specified in each country. Therefore, when studying the SAR scheme for the UE of PC2 (UE with maximum allowed transmit power of 26 dBm), an average transmit power of 23dBm or less over a certain time has been the target assumption for the standardized scheme.

Since the network device cannot determine the capability of the PC2UE to meet the SAR requirement in a Supplemental Uplink (SUL) band combination, the efficiency of the network device in scheduling the UE of the PC2 is affected, resulting in low transmission efficiency.

Disclosure of Invention

The embodiment of the application provides a communication method and related equipment, which can improve uplink transmission efficiency.

In a first aspect, an embodiment of the present application provides a communication method, including: the terminal equipment determines a first uplink transmission time ratio X on a time division duplex TDD frequency band; determining a second uplink transmission time ratio Y according to the first uplink transmission time ratio X, wherein the second uplink transmission time ratio Y is the maximum uplink transmission time ratio of the terminal equipment on the supplementary uplink SUL frequency band; and sending a first message to the network device, wherein the first message is used for indicating the second uplink transmission time ratio Y, and the terminal device is configured to transmit uplink data by using the TDD frequency band and the SUL frequency band. The terminal device reports the maximum uplink transmission time ratio on the SUL frequency band to the network device, and the network device can accurately determine the capability of the terminal device to meet the SAR requirement according to the maximum uplink transmission time ratio. Therefore, under the capability of meeting the SAR requirement, the scheduling terminal equipment transmits uplink data on the TDD frequency band and the SUL frequency band, the uplink scheduling efficiency is improved, and the uplink transmission efficiency is improved.

In one possible design, a terminal device receives a system message from a network device, where the system message includes uplink and downlink timeslot ratios on a TDD band; and determining a first uplink transmission time ratio X according to the uplink and downlink time slot ratio. And determining the maximum uplink transmission time ratio on the TDD frequency band through the system message so as to accurately determine the capability of the terminal equipment meeting the SAR requirement.

In another possible design, the first message is further used to instruct the terminal device to preferentially satisfy uplink scheduling on the TDD band. The uplink scheduling on the TDD frequency band is preferentially met through the implicit indication, and the uplink scheduling efficiency is improved.

In another possible design, the terminal device transmits uplink data according to a first uplink transmission time ratio X on the TDD band and transmits uplink data according to a second uplink transmission time ratio Y on the SUL band. And transmitting uplink data according to the strongest capacity meeting the SAR requirement, and improving the efficiency of uplink transmission.

In another possible design, when 0< ═ X < ═ 1, Y < ═ 1-X. And the efficiency of uplink scheduling is improved by determining the maximum uplink transmission time ratio on the SUL frequency band.

In another possible design, when Y <0, the first message is further used to indicate that the terminal device cannot transmit the first uplink data on the SUL frequency band, and the terminal device transmits the second uplink data according to (X + Y) on the TDD frequency band. The capacity of the terminal equipment on the SUL frequency band and the TDD frequency band is determined by indicating the value of the ratio Y of the second row transmission time, and the accuracy of network scheduling is improved.

In a second aspect, an embodiment of the present application provides a communication method. The method comprises the following steps: the network equipment receives a first message from the terminal equipment, wherein the first message is used for indicating a second uplink transmission time ratio Y, and the second uplink transmission time ratio Y is the maximum uplink transmission time ratio of the terminal equipment on a supplementary uplink SUL frequency band; and the network equipment schedules the terminal equipment to transmit the uplink data on the TDD frequency band and the SUL frequency band according to the second uplink transmission time ratio Y. The network device can accurately determine the capability of the terminal device to meet the SAR requirement according to the maximum uplink transmission time ratio by receiving the maximum uplink transmission time ratio on the SUL frequency band reported by the terminal device. Therefore, under the capability of meeting the SAR requirement, the scheduling terminal equipment transmits uplink data on the TDD frequency band and the SUL frequency band, the uplink scheduling efficiency is improved, and the uplink transmission efficiency is improved.

In one possible design, the network device sends a system message to the terminal device, where the system message includes an uplink and downlink timeslot ratio on the TDD band, the uplink and downlink timeslot ratio is used to determine a first uplink transmission time ratio X on the TDD band, and the first uplink transmission time ratio X is used to determine a second uplink transmission time ratio Y. And determining the maximum uplink transmission time ratio on the TDD frequency band through the system message so as to accurately determine the capability of the terminal equipment meeting the SAR requirement.

In another possible design, the network device determines, according to the first message, that the terminal device preferentially satisfies uplink scheduling on the TDD frequency band. The uplink scheduling on the TDD frequency band is preferentially met through the implicit indication, and the uplink scheduling efficiency is improved.

In another possible design, the network device schedules the terminal device to transmit uplink data according to a first uplink transmission time ratio X on the TDD frequency band and to transmit uplink data according to a second uplink transmission time ratio Y on the SUL frequency band. And transmitting uplink data according to the strongest capacity meeting the SAR requirement, and improving the efficiency of uplink transmission.

In another possible design, when Y <0, the first message is used to indicate that the terminal device cannot transmit the first uplink data on the SUL frequency band, and the terminal device transmits the second uplink data on the TDD frequency band according to (X + Y). The capacity of the terminal equipment on the SUL frequency band and the TDD frequency band is determined by indicating the value of the ratio Y of the second row transmission time, and the scheduling accuracy is improved.

In a third aspect, an embodiment of the present application provides a communication method, including: the terminal equipment determines a first uplink transmission time ratio X, wherein the first uplink transmission time ratio X is the maximum uplink transmission time ratio of the terminal equipment on a time division duplex TDD frequency band; the terminal device sends a first message to the network device, where the first message is used to indicate a first uplink transmission time ratio X, and the terminal device is configured to transmit uplink data using a TDD band and an SUL band. The terminal device reports the maximum uplink transmission time ratio on the TDD frequency band to the network device, and the network device can accurately determine the capability of the terminal device meeting the SAR requirement according to the maximum uplink transmission time ratio. Therefore, under the capability of meeting the SAR requirement, the scheduling terminal equipment transmits uplink data on the TDD frequency band and the SUL frequency band, the uplink scheduling efficiency is improved, and the uplink transmission efficiency is improved.

In another possible design, the first message is further used to instruct the terminal device to preferentially satisfy uplink scheduling on the SUL band. And the uplink scheduling on the SUL frequency band is preferentially met through implicit indication, so that the uplink scheduling efficiency is improved.

In another possible design, the terminal device transmits uplink data according to a first uplink transmission time ratio X on the TDD band and transmits uplink data according to a second uplink transmission time ratio Y on the SUL band. The uplink data is transmitted according to the strongest capacity meeting the SAR requirement, and the uplink transmission efficiency is improved.

In another possible design, when 0< ═ X < ═ 1, 0< ═ Y < ═ 1-X. And the efficiency of uplink scheduling is improved by determining the maximum uplink transmission time ratio on the SUL frequency band.

In another possible design, when 1< X < ═ 2, the first message is also used to indicate that the maximum transmit power of the terminal device is 29dBm and the actual maximum uplink airtime ratio supported on the TDD band is X/2. And the non-standard 29dBm UE is enabled to report the capability meeting the SAS requirement to the network equipment, and the uplink scheduling efficiency is improved.

In a fourth aspect, an embodiment of the present application provides a communication method, including: the network equipment receives a first message from the terminal equipment, wherein the first message indicates a first uplink transmission time ratio X, and the first uplink transmission time ratio X is the maximum uplink transmission time ratio of the terminal equipment on a time division duplex TDD frequency band; and scheduling the terminal equipment to transmit the uplink data on the TDD frequency band and the supplementary uplink SUL frequency band according to the first uplink transmission time ratio X. The network device can accurately determine the capability of the terminal device to meet the SAR requirement according to the maximum uplink transmission time ratio by receiving the maximum uplink transmission time ratio on the TDD frequency band reported by the terminal device. Therefore, under the capability of meeting the SAR requirement, the scheduling terminal equipment transmits uplink data on the TDD frequency band and the SUL frequency band, and the efficiency of uplink scheduling is improved.

In one possible design, the network device determines, according to the first message, that the terminal device preferentially satisfies uplink scheduling on the SUL frequency band. And the uplink scheduling on the SUL frequency band is preferentially met through implicit indication, so that the uplink scheduling efficiency is improved.

In another possible design, the network device schedules the terminal device to transmit uplink data according to a first uplink transmission time ratio X on the TDD frequency band and to transmit uplink data according to a second uplink transmission time ratio Y on the SUL frequency band. The uplink data is transmitted according to the strongest capacity meeting the SAR requirement, and the uplink transmission efficiency is improved.

In a fifth aspect, the present application provides a communication apparatus configured to implement the methods and functions performed by the terminal device in the first aspect and the third aspect, and the communication apparatus is implemented by hardware/software, where the hardware/software includes modules corresponding to the functions.

In a sixth aspect, the present application provides a communication apparatus configured to implement the methods and functions performed by the network device in the second and fourth aspects, and the communication apparatus is implemented by hardware/software, where the hardware/software includes modules corresponding to the functions.

In a seventh aspect, an embodiment of the present application provides a communication apparatus, where the communication apparatus is applied in a terminal device, and the communication apparatus may be a terminal device or a chip in the terminal device, and the communication apparatus includes: a processor, a memory and a communication bus, wherein the communication bus is used for realizing the connection communication between the processor and the memory, and the processor executes the program stored in the memory for realizing the steps of the first aspect and the third aspect.

In an eighth aspect, an embodiment of the present application provides a communication apparatus, where the communication apparatus is applied in a network device, and the communication apparatus may be a network device or a chip in the network device, and the communication apparatus includes: a processor, a memory and a communication bus, wherein the communication bus is used for realizing the connection communication between the processor and the memory, and the processor executes the program stored in the memory for realizing the steps of the second aspect and the fourth aspect.

In a ninth aspect, the present application provides a computer-readable storage medium having stored therein instructions, which when run on a computer, cause the computer to perform the method of the above aspects.

In a tenth aspect, the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the above aspects.

In an eleventh aspect, the present application provides a chip, including a processor, configured to call and execute instructions stored in a memory, so that a communication device in which the chip is installed performs the method of any one of the above aspects.

In a twelfth aspect, an embodiment of the present application provides another chip, including: the input interface, the output interface, the processor, and optionally the memory, are connected via an internal connection path, the processor is configured to execute code in the memory, and when the code is executed, the processor is configured to perform the method in any of the above aspects.

In a thirteenth aspect, an embodiment of the present application provides a communication system, where the communication system includes at least one terminal device and at least one network device, the terminal device is configured to perform the steps in the first aspect and the third aspect, and the network device is configured to perform the steps in the second aspect and the fourth aspect.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present application, the drawings required to be used in the embodiments or the background art of the present application will be described below.

Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application;

fig. 2 is a flowchart illustrating a communication method according to an embodiment of the present application;

fig. 3 is a schematic flow chart of another communication method provided in the embodiments of the present application;

fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of another communication device provided in an embodiment of the present application;

fig. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a network device according to an embodiment of the present application.

Detailed Description

The embodiments of the present application will be described below with reference to the drawings.

As shown in fig. 1, fig. 1 is a schematic architecture diagram of a communication system 100 according to an embodiment of the present disclosure. The communication system 100 may include a network device 110 and terminal devices 101 to 106. It should be understood that more or fewer network devices or terminal devices may be included in the communication system 100 to which the methods of the embodiments of the present application may be applied. The network device or the terminal device may be hardware, or may be functionally divided software, or a combination of the two. The network device and the terminal device can communicate through other devices or network elements. In the communication system 100, the network device 110 can transmit downlink data to the terminal devices 101 to 106. Of course, terminal apparatuses 101 to 106 may transmit uplink data to network apparatus 110. Terminal devices 101-106 may be cellular phones, smart phones, laptops, handheld communication devices, handheld computing devices, satellite radios, global positioning systems, Personal Digital Assistants (PDAs), and/or any other suitable device for communicating over wireless communication system 100, among others. Of course, the terminal devices to which the present application relates may include high power UEs (e.g., UEs supporting maximum transmit power of 26dBm or 29dBm or higher). The network device 110 may be a network device of LTE and/or NR, and specifically may be a base station (NodeB), an evolved Node B (eNodeB), a base station in a 5G mobile communication system, a Next generation mobile communication base station (Next generation Node B, gNB), a base station in a future mobile communication system, or an access Node in a Wi-Fi system. The communication system 100 may employ a Public Land Mobile Network (PLMN), a device-to-device (D2D) network, a machine-to-machine (M2M) network, an internet of things (IoT), or other networks. The terminal devices 104 to 106 may form a communication system. In the communication system, the terminal device 105 may transmit downlink data to the terminal device 104 or the terminal device 106. The method in the embodiment of the present application can be applied to the communication system 100 shown in fig. 1.

In the field of network technology, the following frequency band combinations may be included:

SUL Band Combination (BC): in the New Radio (NR) as the second uplink of the UE serving cell, there is no coupled downlink reception on the SUL band compared to the conventional uplink. The SUL band combination may include a Time Division Duplex (TDD) band and an SUL band. The network device can realize that the UE in the same cell uses uplink carriers of two different frequency bands to transmit in turn by configuring the SUL frequency band combination for the UE. All SUL-related band combinations are defined in 38.101-1 and 38.101-3.

Uplink carrier aggregation (UL CA): unlike the SUL, the network device configures the uplink carrier aggregation by using a protocol stack for carrier aggregation. If the UE supports the frequency band combination corresponding to the uplink carrier aggregation, the network device may configure and add an auxiliary cell to the UE and activate a corresponding uplink, so that the uplink of the auxiliary cell and the uplink of the main cell form an uplink carrier aggregation.

LTE and NR dual connectivity (EN-DC): belonging to a non-independent (non-standby) networking architecture. Under the EN-DC configuration, the UE can simultaneously receive uplink scheduling of the network equipment on two different frequency bands of LTE and NR. Unlike two independent (standby) networking architectures of SUL and UL CA, for EN-DC, the UE also accepts scheduling on LTE (4G) frequency band, while for both SUL and UL CA, the UE can only accept scheduling on NR (5G) frequency band.

The 3GPP specifies two types of UEs: PC3 UE and PC2 UE. The PC3 UE is a mobile phone type terminal device supporting the maximum transmitting power of 23 dBm. The PC2UE is a handset-type terminal device supporting a maximum transmit power of 26 dBm. PC2UE may also be referred to as a High Power User Equipment (HPUE).

For NR UEs operating on a single frequency band, currently 3GPP requires that PC2UE report its maximum supported uplink transmission time ratio, since the transmission power of PC2 is twice that of PC3 UE, if the maximum uplink transmission time ratio scheduled by the network device is less than 50%, the UE can satisfy that the average transmission power does not exceed 23dBm without any additional scheme, that is, satisfy the SAR requirement. Therefore, the 3GPP requires that the value range of the maximum uplink transmission time ratio reported and supported by the PC2UE is 50% -100%. It can be understood that the larger the uplink transmission time ratio supported by the UE is reported by the UE, the stronger the control capability of the UE on the transmission power is, and the smaller the limitation on the scheduling of uplink transmission by the network device is. Meanwhile, according to the 3GPP, if the uplink transmission time ratio actually scheduled by the network device exceeds the capability of meeting the SAR requirement reported by the UE, the UE is allowed to generate uplink loss, and the side surface reflects that the scheduling of the network device is limited.

The SUL technology plays an important role in 5G evolution, and by adding a pure uplink carrier with a low frequency point for UE and matching with a large downlink bandwidth of a C frequency band (C band), the deficiency of 5G uplink coverage is supplemented, uplink coverage and capacity are greatly improved, and most direct help is provided for operators to flexibly deploy 5G. The SUL technology is characterized in that a plurality of uplink carriers of the UE are configured by the network equipment at the same time, but the UE is only scheduled to transmit on one uplink carrier of the plurality of uplink carriers at the same time, and the condition of simultaneous transmission does not exist. Therefore, when considering the SAR scheme of PC2UE operating on the SUL band combination, there are many differences from the existing uplink SAR scheme of the UL CA or EN-DC band combination.

The 3GPP specifies the signaling reported by the transmission power capability of the PC2 high-power UE:

and for the single-frequency-band PC2UE, reporting through UE-PowerClass per band signaling. For the EN-DC combination PC2UE, powerClass per BC signaling and powerClass per BC signaling are reported. For NR CA combination PC2UE, reporting is via powerClass per BC signaling.

The 3GPP specifies that the SAR scheme capability of PC2 high-power UE is reported:

for the single band SAR capability, reporting the proportion (60% -100%) of the maximum supported uplink transmission time of the UE to the total transmission time resource through maxUpLinkDutyCycle-PC2-FR1 per band signaling. For the EN-DC and UL CA combined SAR capacity, under the TDD + TDD frequency band combination, reporting the duty ratio (duty cycle) of the LTE network side under different TDD ratios through maxUpLinkDutyCycle-interBandENDC-TDD-PC2-r16 signaling. And reporting a combination (duty cycle FDD, duty cycle TDD) under the FDD + TDD frequency band combination.

The key difference between the SUL frequency band combination and the CA and EN-DC frequency band combination mode is as follows: and the transmission is performed in turn on the SUL frequency band and the TDD frequency band instead of concurrence. Since there is no standardized SAR scheme in 3GPP, it is ensured that the network device knows the capability of PC2UE in the SUL band combination to meet SAR regulations, that is, the capability of UE that cannot report the maximum uplink transmission time ratio on each uplink band supported by itself, which affects the uplink scheduling of the network device to the UE, resulting in low transmission efficiency. In addition, the maximum uplink transmission time supported in the existing reporting method accounts for 100%, and the network device cannot distinguish the capability of supporting the UE with the maximum transmission power exceeding more than 26dBm, for example, if the UE can support 29dBm, it cannot further indicate a stronger capability. In order to solve the above technical problem, embodiments of the present application provide the following solutions.

As shown in fig. 2, fig. 2 is a schematic flowchart of a communication method according to an embodiment of the present application. The steps in the embodiments of the present application include at least:

s201, the network device sends a system message to the terminal device, wherein the system message comprises the uplink and downlink time slot ratio on the TDD frequency band.

S202, the terminal equipment determines a first uplink transmission time ratio X on the TDD frequency band according to the uplink and downlink time slot ratio.

And the first uplink transmission time ratio X is the maximum uplink transmission time ratio of the terminal equipment on the TDD frequency band. For example, if the ratio of uplink time slot to downlink time slot is 2:3, the ratio X of the first uplink transmission time may be 40%. The first uplink transmission time occupation ratio X represents a ratio of the maximum uplink transmission time supported on the TDD band in a specific period to the total time domain resources on the premise of satisfying the SAR requirement. The specific period may be a period greater than 1 ms, and is typically a frame length of one radio frame, for example, 10 ms.

And S203, the terminal equipment determines a second uplink transmission time ratio Y according to the first uplink transmission time ratio X, wherein the second uplink transmission time ratio Y is the maximum uplink transmission time ratio of the terminal equipment on the supplementary uplink SUL frequency band.

The second uplink transmission time occupation ratio Y represents a ratio of the maximum uplink transmission time supported on the SUL frequency band in a specific period to all time domain resources on the premise of satisfying the SAR requirement.

It should be noted that the terminal device transmits uplink data on the TDD band according to the first uplink transmission time ratio X (maximum value), and transmits uplink data on the SUL band according to the second uplink transmission time ratio Y (maximum value), and the total accumulated transmission power does not exceed the preset threshold, so that the SAR-specified radiation energy accumulated by the terminal device in a certain time cannot exceed the specified maximum value. And the first uplink transmission time ratio X or the second uplink transmission time ratio Y both meet the SAR requirement.

In order to meet the requirement of the SAR regulation, when the network device configures the maximum transmission power of the terminal device, the terminal device may control its transmission power according to a power accumulation algorithm and a power backoff strategy that can be used by itself, so as to meet the requirement that the accumulated transmission power does not exceed a preset threshold within a certain time. The power accumulation algorithm and the power backoff strategy are not specified in the 3GPP standard, and the flexibility of the design of the terminal equipment is allowed.

Optionally, when 0< ═ X < ═ 1, Y < ═ 1-X) may also take a value less than 0. In particular, when Y is (1-X), it indicates that the capability of the terminal device is strongest, and the network device may schedule any uplink resource of the terminal device. When Y <0, it indicates that the terminal device cannot transmit the first uplink data on the SUL frequency band, and cannot transmit the second uplink data on the TDD frequency band according to the maximum uplink transmission time ratio X. At this time, the terminal device may transmit the second uplink data on the TDD band at a ratio of uplink transmission time not exceeding (X + Y). For example, when X is 0.5 and Y is-0.1, that is, Y is less than 0, the terminal device cannot transmit the first uplink data on the SUL band, and may transmit the second uplink data on the TDD band according to the uplink transmission time ratio of 0.3 (not more than 0.4).

S204, the terminal device sends a first message to the network device, where the first message is used to indicate the second uplink transmission time ratio Y, and the terminal device is configured to transmit uplink data using the TDD frequency band and the SUL frequency band.

Optionally, the terminal device may send the first message to the network device on the SUL band. After the network device receives the first message on the SUL band, it may be determined that the second uplink transmission time occupation ratio Y is the maximum uplink transmission time occupation ratio of the terminal device on the row SUL band.

Optionally, after receiving the first message, the network device may schedule the terminal device to transmit the uplink data according to the uplink transmission time ratio not exceeding X on the TDD frequency band and transmit the uplink data according to the uplink transmission time ratio not exceeding Y on the SUL frequency band according to the first message. Specifically, the network device may schedule the terminal device to transmit uplink data according to the first uplink transmission time ratio X on the TDD band and transmit uplink data according to the second uplink transmission time ratio Y on the SUL band, that is, schedule the terminal device to transmit uplink data according to the strongest capability.

Optionally, the terminal device may transmit the uplink data according to the uplink transmission time ratio not exceeding X on the TDD frequency band, and transmit the uplink data according to the uplink transmission time ratio not exceeding Y on the SUL frequency band. It should be noted that the terminal device transmits uplink data to the network device in turn in the TDD band and the SUL band, that is, the terminal device does not transmit uplink data to the network device at the same time.

Optionally, if the actual transmission time ratio of the network device scheduling terminal device on the TDD frequency band exceeds the first uplink transmission time ratio X, or the actual transmission time ratio on the SUL frequency band exceeds the second uplink transmission time ratio Y, the terminal device may be allowed to lose uplink data.

Optionally, the first message may also be used to schedule the transmission power and uplink data of the terminal device. For example, if the terminal device does not meet SAR requirements, the terminal device may be scheduled to reduce transmit power or reduce uplink data.

Optionally, the first message is further configured to indicate that the terminal device preferentially satisfies uplink scheduling on the TDD frequency band. If the network device receives a first message of the terminal device on the SUL frequency band, the first message indicates the maximum uplink transmission time ratio on the SUL frequency band, which is equivalent to an implicit indication that uplink scheduling on a TDD frequency band is preferentially satisfied and uplink scheduling on the SUL frequency band is secondarily satisfied.

Optionally, when Y <0, the first message is further used to indicate that the terminal device cannot transmit the first uplink data on the SUL frequency band, and the terminal device may transmit the second uplink data according to (X + Y) on the TDD frequency band.

The first message may be Radio Resource Configuration (RRC) signaling.

In the embodiment of the application, the terminal device reports the maximum uplink transmission time ratio on the SUL frequency band to the network device, and the network device can accurately determine the capability of the terminal device meeting the SAR requirement according to the maximum uplink transmission time ratio. Therefore, under the capability of meeting the SAR requirement, the scheduling terminal equipment transmits uplink data on the TDD frequency band and the SUL frequency band, and the efficiency of uplink scheduling is improved.

As shown in fig. 3, fig. 3 is a schematic flowchart of another communication method provided in the embodiment of the present application. The steps in the embodiments of the present application include at least:

s301, a terminal device determines a first uplink transmission time ratio X, wherein the first uplink transmission time ratio X is the maximum uplink transmission time ratio of the terminal device on a time division duplex TDD frequency band.

And the first uplink transmission time ratio X is the maximum uplink transmission time ratio of the terminal equipment on the TDD frequency band. The first uplink transmission time occupation ratio X represents a ratio of the maximum uplink transmission time supported on the TDD band in a specific period to the total time domain resources on the premise of satisfying the SAR requirement. The specific period may be a period greater than 1 ms, and is typically a frame length of one radio frame, for example, 10 ms.

S302, a terminal device sends a first message to a network device, where the first message is used to indicate the first uplink transmission time ratio X, and the terminal device is configured to transmit uplink data using the TDD frequency band and the SUL frequency band.

Optionally, the network device may determine the second uplink transmission time ratio Y according to the first uplink transmission time ratio X. And the second uplink transmission time occupation ratio Y is the maximum uplink transmission time occupation ratio of the terminal equipment on the SUL frequency band. The second uplink transmission time occupation ratio Y represents a ratio of the maximum uplink transmission time supported on the SUL frequency band in a specific period to the total uplink time domain resources on the premise of satisfying the SAR requirement.

Alternatively, when 0< ═ X < ═ 1, 0< ═ Y < ═ 1-X. Specifically, when 1< X < ═ 2, it means that the maximum transmission power of the terminal device is 29 dBm. The first message is also used to indicate that the maximum transmit power of the terminal device is 29dBm and the actual maximum uplink tti on the TDD band is supported to be X/2. For example, when X reported to the network device by the terminal device is 1.6, that is, 1< X < ═ 2, it means that the maximum transmit power supported by the terminal device is not 26dBm, but 29 dBm. Meanwhile, the terminal equipment can transmit uplink data in a TDD frequency band according to the uplink transmission time ratio not more than 0.8, so that the SAR requirement can be met.

Optionally, the terminal device may send the first message to the network device on the TDD band. After the network device receives the first message on the TDD band, it may determine that the first uplink transmission time ratio X is a maximum uplink transmission time ratio of the terminal device on the row TDD band.

Optionally, the first message may be further configured to indicate that the terminal device preferentially satisfies uplink scheduling on the SUL frequency band. If the network device receives a first message of the terminal device on the TDD band, the first message indicates a maximum uplink transmission time ratio on the TDD band, which is equivalent to an implicit indication that uplink scheduling on the SUL band is preferentially satisfied, and uplink scheduling on the TDD band is secondarily satisfied.

Optionally, the first message may also be used to indicate the first uplink transmission time ratio X and the second uplink transmission time ratio Y. And the terminal equipment simultaneously reports the maximum uplink transmission time ratio on the TDD frequency band and the maximum uplink transmission time ratio on the SUL frequency band.

Wherein, the first message may be RRC signaling.

And S303, the network equipment schedules the terminal equipment to transmit uplink data on the TDD frequency band and the supplementary uplink SUL frequency band according to the first uplink transmission time ratio X.

Optionally, the network device may schedule the terminal device to transmit the uplink data according to the uplink transmission time ratio not exceeding X on the TDD frequency band and transmit the uplink data according to the uplink transmission time ratio not exceeding Y on the SUL frequency band according to the first message.

Particularly, the network device may schedule the terminal device to transmit uplink data according to the first uplink transmission time ratio X on the TDD band and transmit uplink data according to the second uplink transmission time ratio Y on the SUL band, that is, schedule the terminal device to transmit uplink data according to the strongest capability meeting the SAR requirement.

In the embodiment of the application, the terminal device reports the maximum uplink transmission time ratio on the TDD frequency band to the network device, and the network device can accurately determine the capability of the terminal device to meet the SAR requirement according to the maximum uplink transmission time ratio. Therefore, under the capability of meeting the SAR requirement, the scheduling terminal equipment transmits uplink data on the TDD frequency band and the SUL frequency band, and the efficiency of uplink scheduling is improved.

The method of the embodiments of the present application is set forth above in detail and the apparatus of the embodiments of the present application is provided below.

As shown in fig. 4, fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication apparatus may be a terminal device, or a chip or a processing system in the terminal device, and the apparatus may be configured to implement any method and function related to the terminal device in any of the foregoing embodiments, and the apparatus may include a processing module 401, a sending module 402, and a receiving module 403. Optionally, the sending module 402 and the receiving module 403 correspond to a radio frequency circuit and a baseband circuit included in the terminal device. The detailed description of each module is as follows.

In one embodiment of the present invention,

a processing module 401, configured to determine a first uplink transmission time ratio X on a TDD band; determining a second uplink transmission time ratio Y according to the first uplink transmission time ratio X, wherein the second uplink transmission time ratio Y is the maximum uplink transmission time ratio of the terminal equipment on a supplementary uplink SUL frequency band;

a sending module 402, configured to send a first message to a network device, where the first message is used to indicate the second uplink transmission time ratio Y, and the terminal device is configured to transmit uplink data using the TDD frequency band and the SUL frequency band.

Optionally, the receiving module 403 is configured to receive a system message from the network device, where the system message includes an uplink and downlink timeslot ratio on the TDD band; a processing module 401, configured to determine the first uplink transmission time ratio X according to the uplink and downlink timeslot ratio.

Optionally, the first message is further configured to indicate that the terminal device preferentially satisfies uplink scheduling on the TDD frequency band.

The sending module 402 is further configured to transmit the uplink data on the TDD frequency band according to the first uplink transmission time ratio X, and transmit the uplink data on the SUL frequency band according to the second uplink transmission time ratio Y.

Alternatively, when 0< ═ X < ═ 1, Y < ═ 1-X.

Optionally, when Y <0, the first message is used to indicate that the terminal device cannot send the first uplink data on the SUL frequency band, and the terminal device sends the second uplink data on the TDD frequency band according to (X + Y).

In another embodiment:

a processing module 401, configured to determine a first uplink transmission time ratio X, where the first uplink transmission time ratio X is a maximum uplink transmission time ratio of the terminal device on a TDD band;

a sending module 402, configured to send a first message to a network device, where the first message is used to indicate the first uplink transmission time ratio X, and the terminal device is configured to transmit uplink data using the TDD frequency band and the SUL frequency band.

Optionally, the first message is further configured to indicate that the terminal device preferentially satisfies uplink scheduling on the SUL frequency band.

Alternatively, when 0< ═ X < ═ 1, 0< ═ Y < ═ 1-X.

Optionally, when 1< X < ═ 2, the first message is further used to indicate that the maximum transmit power of the terminal device is 29dBm, and the actual maximum uplink tti on the TDD band is supported to be X/2.

It should be noted that, the implementation of each module may also perform the method and the function performed by the terminal device in the foregoing embodiments, with reference to the corresponding descriptions of the method embodiments shown in fig. 2 and fig. 3.

As shown in fig. 5, fig. 5 is a schematic structural diagram of another communication device provided in the embodiment of the present application. The communication apparatus may be a network device, or a chip or a processing system in a network device, and the apparatus may be used to implement any method and function related to the network device in any of the foregoing embodiments, and the apparatus may include a receiving module 501, a processing module 502, and a sending module 503. Optionally, the receiving module 501 and the sending module 503 correspond to a radio frequency circuit and a baseband circuit included in the network device. The detailed description of each module is as follows.

In one embodiment:

a receiving module 501, configured to receive a first message from a terminal device, where the first message is used to indicate a second uplink transmission time ratio Y, and the second uplink transmission time ratio Y is a maximum uplink transmission time ratio of the terminal device on a supplemental uplink SUL frequency band;

a processing module 502, configured to schedule the terminal device to transmit uplink data on the TDD band and the SUL band according to the second uplink transmission time ratio Y.

Optionally, the sending module 503 is configured to send a system message to the terminal device, where the system message includes an uplink and downlink timeslot proportion on the TDD frequency band, the uplink and downlink timeslot proportion is used to determine a first uplink transmission time proportion X on the TDD frequency band, and the first uplink transmission time proportion X is used to determine a second uplink transmission time proportion Y.

Optionally, the processing module 502 is further configured to determine, according to the first message, that the terminal device preferentially satisfies uplink scheduling on the TDD frequency band.

Optionally, the processing module 502 is further configured to schedule the terminal device to transmit the uplink data according to the first uplink transmission time ratio X on the TDD frequency band, and transmit the uplink data according to the second uplink transmission time ratio Y on the SUL frequency band.

Alternatively, when 0< ═ X < ═ 1, Y < ═ 1-X.

In another embodiment:

a receiving module 501, configured to receive a first message from a terminal device, where the first message indicates a first uplink transmission time ratio X, where the first uplink transmission time ratio X is a maximum uplink transmission time ratio of the terminal device on a TDD band;

a processing module 502, configured to schedule the terminal device to transmit uplink data on the TDD frequency band and the supplemental uplink SUL frequency band according to the first uplink transmission time ratio X.

Optionally, the processing module 502 is further configured to determine, according to the first message, that the terminal device preferentially satisfies uplink scheduling on the SUL frequency band.

Alternatively, when 0< ═ X < ═ 1, 0< ═ Y < ═ 1-X.

It should be noted that, the implementation of each module may also perform the method and the function performed by the network device in the foregoing embodiments, with reference to the corresponding description of the method embodiments shown in fig. 2 and fig. 3.

As shown in fig. 6, fig. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present application. The terminal device may include: at least one processor 601, at least one communication interface 602, at least one memory 603, and at least one communication bus 604.

The processor 601 may be, among other things, a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a digital signal processor and a microprocessor, or the like. The communication bus 604 may be a peripheral component interconnect standard PCI bus or an extended industry standard architecture EISA bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 6, but this is not intended to represent only one bus or type of bus. A communication bus 604 is used to enable connective communication between these components. The communication interface 602 of the device in the embodiment of the present application is used for performing signaling or data communication with other node devices. The memory 603 may include a volatile memory, such as a nonvolatile dynamic random access memory (NVRAM), a phase change random access memory (PRAM), a Magnetoresistive Random Access Memory (MRAM), and the like, and may further include a nonvolatile memory, such as at least one magnetic disk memory device, an electrically erasable programmable read-only memory (EEPROM), a flash memory device, such as a NOR flash memory (NOR flash memory) or a NAND flash memory (EEPROM), and a semiconductor device, such as a Solid State Disk (SSD). The memory 603 may optionally be at least one storage device located remotely from the processor 601. Optionally, a set of program codes may also be stored in the memory 603. The processor 601 may optionally also execute programs stored in the memory 603.

In one embodiment:

determining a first uplink transmission time ratio X on a time division duplex TDD frequency band;

determining a second uplink transmission time ratio Y according to the first uplink transmission time ratio X, wherein the second uplink transmission time ratio Y is the maximum uplink transmission time ratio of the terminal equipment on a supplementary uplink SUL frequency band;

and sending a first message to a network device, where the first message is used to indicate the second uplink transmission time ratio Y, and the terminal device is configured to transmit uplink data using the TDD band and the SUL band.

Optionally, the processor 601 is further configured to perform the following operation steps:

receiving a system message from the network device, wherein the system message comprises an uplink and downlink time slot ratio on the TDD frequency band;

and determining the first uplink transmission time ratio X according to the uplink and downlink time slot ratio.

and transmitting the uplink data on the TDD frequency band according to the first uplink transmission time ratio X, and transmitting the uplink data on the SUL frequency band according to the second uplink transmission time ratio Y.

Alternatively, when 0< ═ X < ═ 1, Y < ═ 1-X.

In another embodiment:

determining a first uplink transmission time ratio X, wherein the first uplink transmission time ratio X is the maximum uplink transmission time ratio of the terminal equipment on a time division duplex TDD frequency band;

and sending a first message to a network device, where the first message is used to indicate the first uplink transmission time ratio X, and the terminal device is configured to transmit uplink data using the TDD band and the SUL band.

Alternatively, when 0< ═ X < ═ 1, 0< ═ Y < ═ 1-X.

Further, the processor may cooperate with the memory and the communication interface to perform the operations of the terminal device in the embodiments of the above application.

As shown in fig. 7, fig. 7 is a schematic structural diagram of a network device according to an embodiment of the present application. The network device may include: at least one processor 701, at least one communication interface 702, at least one memory 703 and at least one communication bus 704.

The processor 701 may be any of the various types of processors mentioned above. The communication bus 704 may be a peripheral component interconnect standard PCI bus or an extended industry standard architecture EISA bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 7, but this is not intended to represent only one bus or type of bus. A communication bus 704 is used to enable communications among the components. In this embodiment, the communication interface 702 of the device in this application is used for performing signaling or data communication with other node devices. The memory 703 may be of the various types mentioned previously. The memory 703 may optionally be at least one memory device located remotely from the processor 701. A set of program codes is stored in the memory 703 and the processor 701 executes the programs in the memory 703.

In one embodiment:

receiving a first message from a terminal device, wherein the first message is used for indicating a second uplink transmission time ratio Y, and the second uplink transmission time ratio Y is the maximum uplink transmission time ratio of the terminal device on a supplementary uplink SUL frequency band;

and scheduling the terminal equipment to transmit the uplink data on the TDD frequency band and the SUL frequency band according to the second uplink transmission time ratio Y.

Optionally, the processor 701 is further configured to perform the following operation steps:

and sending a system message to the terminal device, wherein the system message comprises an uplink and downlink time slot ratio on the TDD frequency band, the uplink and downlink time slot ratio is used for determining a first uplink transmission time ratio X on the TDD frequency band, and the first uplink transmission time ratio X is used for determining a second uplink transmission time ratio Y.

and according to the first message, determining that the terminal equipment preferentially meets uplink scheduling on the TDD frequency band.

and scheduling the terminal equipment to transmit the uplink data on the TDD frequency band according to the first uplink transmission time ratio X, and transmitting the uplink data on the SUL frequency band according to the second uplink transmission time ratio Y.

Alternatively, when 0< ═ X < ═ 1, Y < ═ 1-X.

In another embodiment:

receiving a first message from a terminal device, where the first message indicates the first uplink transmission time ratio X, where the first uplink transmission time ratio X is a maximum uplink transmission time ratio of the terminal device on a Time Division Duplex (TDD) frequency band;

and scheduling the terminal equipment to transmit uplink data on the TDD frequency band and the supplementary uplink SUL frequency band according to the first uplink transmission time ratio X.

and determining that the terminal equipment preferentially meets uplink scheduling on the SUL frequency band according to the first message.

Alternatively, when 0< ═ X < ═ 1, 0< ═ Y < ═ 1-X.

Optionally, when 1< X < ═ 2, the first message is further used to indicate that the maximum transmit power of the terminal device is 27dBm, and the actual maximum uplink tti on the TDD band is supported to be X/2.

Further, the processor may cooperate with the memory and the communication interface to perform the operations of the network device in the embodiments of the above application.

The embodiment of the present application further provides a chip system, where the chip system includes a processor, configured to support a terminal device or a network device to implement the functions involved in any of the foregoing embodiments, for example, to generate or process the first uplink transmission time ratio X and the second uplink transmission time ratio Y involved in the foregoing method. In one possible design, the system-on-chip may further include a memory for necessary program instructions and data for the terminal device or the network device. The chip system may be constituted by a chip, or may include a chip and other discrete devices.

Embodiments of the present application further provide a processor, coupled to the memory, for performing any method and function related to the terminal device or the network device in any of the foregoing embodiments.

Embodiments of the present application further provide a computer program product containing instructions, which when executed on a computer, cause the computer to perform any of the methods and functions related to the terminal device or the network device in any of the above embodiments.

The embodiments of the present application further provide an apparatus, configured to perform any method and function related to a terminal device or a network device in any of the foregoing embodiments.

An embodiment of the present application further provides a wireless communication system, where the system includes at least one terminal device and at least one network device involved in any of the above embodiments.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

The above-mentioned embodiments further explain the objects, technical solutions and advantages of the present application in detail. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method of communication, comprising:

the terminal equipment determines a first uplink transmission time ratio X on a time division duplex TDD frequency band;

the terminal equipment determines a second uplink transmission time ratio Y according to the first uplink transmission time ratio X, wherein the second uplink transmission time ratio Y is the maximum uplink transmission time ratio of the terminal equipment on a supplementary uplink SUL frequency band;

and the terminal equipment sends a first message to network equipment, wherein the first message is used for indicating the second uplink transmission time to account for Y, and the terminal equipment is configured to transmit uplink data by using the TDD frequency band and the SUL frequency band.

2. The method of claim 1, wherein the method further comprises:

the terminal equipment receives a system message from the network equipment, wherein the system message comprises an uplink and downlink time slot ratio on the TDD frequency band;

and the terminal equipment determines the first uplink transmission time ratio X according to the uplink and downlink time slot ratio.

3. The method of claim 1 or 2, wherein the first message is further used to indicate that the terminal device preferentially satisfies uplink scheduling on the TDD band.

4. The method of any one of claims 1-3, further comprising:

and the terminal equipment transmits the uplink data on the TDD frequency band according to the first uplink transmission time ratio X, and transmits the uplink data on the SUL frequency band according to the second uplink transmission time ratio Y.

5. The method of any one of claims 1-4, wherein when 0< ═ X < ═ 1, Y < ═ (1-X).

6. The method of claim 5, wherein the first message indicates that the terminal device cannot transmit first uplink data on the SUL band when Y <0, and the terminal device transmits second uplink data on the TDD band according to (X + Y).

7. A method of communication, comprising:

the method comprises the steps that network equipment receives a first message from terminal equipment, wherein the first message is used for indicating a second uplink transmission time ratio Y, and the second uplink transmission time ratio Y is the maximum uplink transmission time ratio of the terminal equipment on a supplementary uplink SUL frequency band;

and the network equipment schedules the terminal equipment to transmit the uplink data on the TDD frequency band and the SUL frequency band according to the second uplink transmission time ratio Y.

8. The method of claim 7, wherein the method further comprises:

the network device sends a system message to the terminal device, where the system message includes an uplink and downlink timeslot proportion on the TDD frequency band, the uplink and downlink timeslot proportion is used to determine a first uplink transmission time proportion X on the TDD frequency band, and the first uplink transmission time proportion X is used to determine a second uplink transmission time proportion Y.

9. The method of claim 7 or 8, wherein the method further comprises:

and the network equipment determines that the terminal equipment preferentially meets uplink scheduling on the TDD frequency band according to the first message.

10. The method according to any of claims 7-9, wherein the scheduling, by the network device, the terminal device to transmit uplink data on the TDD band and the SUL band according to the second uplink transmission time ratio Y includes:

and the network equipment schedules the terminal equipment to transmit the uplink data on the TDD frequency band according to the first uplink transmission time ratio X, and transmits the uplink data on the SUL frequency band according to the second uplink transmission time ratio Y.

11. The method of any one of claims 7-10, wherein when 0< ═ X < ═ 1, Y < ═ 1-X.

12. The method of claim 11, wherein the first message indicates that the terminal device cannot transmit first uplink data on the SUL band when Y <0, and the terminal device transmits second uplink data on the TDD band in (X + Y).

13. A communications apparatus, comprising:

the processing module is used for determining a first uplink transmission time ratio X on a time division duplex TDD frequency band; determining a second uplink transmission time ratio Y according to the first uplink transmission time ratio X, wherein the second uplink transmission time ratio Y is the maximum uplink transmission time ratio of the terminal equipment on a supplementary uplink SUL frequency band;

a sending module, configured to send a first message to a network device, where the first message is used to indicate that the second uplink transmission time accounts for Y, and the terminal device is configured to transmit uplink data using the TDD frequency band and the SUL frequency band.

14. The apparatus of claim 13, wherein the apparatus further comprises:

a receiving module, configured to receive a system message from the network device, where the system message includes an uplink and downlink timeslot ratio on the TDD frequency band;

the processing module is further configured to determine the first uplink transmission time ratio X according to the uplink and downlink timeslot ratio.

15. The apparatus of claim 13 or 14, wherein the first message is further used to indicate that the terminal device preferentially satisfies uplink scheduling on the TDD band.

16. The apparatus of any one of claims 13-15,

the sending module is further configured to transmit the uplink data on the TDD frequency band according to the first uplink transmission time ratio X, and transmit the uplink data on the SUL frequency band according to the second uplink transmission time ratio Y.

17. The apparatus of any one of claims 13-16, wherein Y < (1-X) when 0< ═ X < ═ 1.

18. The apparatus of claim 17, wherein the first message indicates that the terminal device cannot transmit first uplink data on the SUL band when Y <0, and the terminal device transmits second uplink data on the TDD band according to (X + Y).

19. A communications apparatus, comprising:

a receiving module, configured to receive a first message from a terminal device, where the first message is used to indicate a second uplink transmission time ratio Y, and the second uplink transmission time ratio Y is a maximum uplink transmission time ratio of the terminal device on a supplemental uplink SUL frequency band;

and the processing module is used for scheduling the terminal equipment to transmit the uplink data on the TDD frequency band and the SUL frequency band according to the second uplink transmission time ratio Y.

20. The apparatus of claim 19,

a sending module, configured to send a system message to the terminal device, where the system message includes an uplink and downlink timeslot proportion on the TDD frequency band, the uplink and downlink timeslot proportion is used to determine a first uplink transmission time proportion X on the TDD frequency band, and the first uplink transmission time proportion X is used to determine a second uplink transmission time proportion Y.

21. The apparatus of claim 19 or 20,

the processing module is further configured to determine that the terminal device preferentially satisfies uplink scheduling on the TDD frequency band according to the first message.

22. The apparatus of any one of claims 19-21,

the processing module is further configured to schedule the terminal device to transmit the uplink data on the TDD frequency band according to the first uplink transmission time ratio X, and transmit the uplink data on the SUL frequency band according to the second uplink transmission time ratio Y.

23. The apparatus of any one of claims 19-22, wherein Y < (1-X) when 0< ═ X < ═ 1.

24. The apparatus of claim 23, wherein the first message indicates that the terminal device cannot send first uplink data on the SUL band when Y <0, and the terminal device sends second uplink data on the TDD band in (X + Y).

25. A computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 12.

26. A chip comprising a processor and a memory, the memory for storing instructions, the processor executing the instructions to cause the chip to perform the method of any of claims 1 to 12.