CN114698416A

CN114698416A - Data transmission method and device

Info

Publication number: CN114698416A
Application number: CN202080015326.5A
Authority: CN
Inventors: 夏俊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2022-07-01
Also published as: WO2022087929A1

Abstract

A data transmission method and a device relate to the technical field of communication and are used for reducing data transmission delay of a terminal supporting a multi-card multi-standby function under the condition that data to be transmitted of at least two SIM cards conflict. The method comprises the following steps: under the condition that the first time domain resource and the second time domain resource are overlapped on the time domain, the terminal sends first data of the first SIM card on the first time domain resource; the first time domain resource is a time domain resource which is scheduled to be used for sending first data of the first SIM card; the second time domain resource is a time domain resource scheduled for transmitting second data of the second SIM card; the second SIM card is one of other SIM cards except the first SIM card in the plurality of SIM cards; and the terminal sends the second data of the second SIM card on a third time domain resource after the second time domain resource, wherein the third time domain resource is a time domain resource scheduled for sending the third data of the second SIM card.

Description

Data transmission method and device

Technical Field

The present application relates to communication technologies, and in particular, to a data transmission method and apparatus.

Background

With the development of communication technology, many mobile terminals (such as mobile phones) have Dual SIM Dual Standby (DSDS) functions. The dual-card dual-standby means that two Subscriber Identity Module (SIM) cards are installed in one mobile phone at the same time, and the two SIM cards can be simultaneously in a network standby state.

The DSDS mobile phone can be only configured with one set of transceiving radio frequency so as to save hardware cost. Thus, under the condition that the mobile phone is in a standby state, the two SIM cards in the DSDS mobile phone can monitor paging in a time sharing mode. However, only one set of transceiving radio frequency is configured in the DSDS mobile phone; therefore, the DSDS handset can only realize dual card dual standby, but cannot realize dual card simultaneous communication. However, in practical applications, users have the requirement of dual-card dual-communication in many scenarios.

As shown in fig. 1, the terminal 110 of the user a may be the above-mentioned terminal supporting DR-DSDS, and two SIM cards may be installed in the terminal 110: SIM card 1 and SIM card 2. After the user B uses the terminal 120 to initiate a voice paging request to the SIM card 1 of the terminal 110, the user a can use the terminal 110 to perform a voice call with the user B having the terminal 120 through the SIM card 1 of the terminal 110. As shown in fig. 1, during a voice call between user a using terminal 110 and user B holding terminal 120 through SIM card 1 of terminal 110, user C may initiate a voice paging request to SIM card 2 of terminal 110 using terminal 130 to request a voice call between user a holding terminal 110 and user a through SIM card 2 of terminal 110.

In order to solve the problem that only one set of radio frequency receiving and transmitting DSDS mobile phone can not be bi-pass, the prior art provides a dual-card uplink DSDS technology. The core thought of the technology is as follows: and multiplexing the data to be sent of the two SIM cards on an air interface uplink in a time-sharing way by utilizing the packet scheduling characteristic of the network service of 4G or 5G. And when the data to be sent of the two SIM cards conflict, the DSDS terminal selects to send the data to be sent of one SIM card (taking SIM card 1 as an example) first, and discards the data to be sent of the other SIM card (taking SIM card 2 as an example). Then, the DSDS terminal ensures successful transmission of the data to be transmitted of the SIM card 2 by using a retransmission mechanism.

However, based on the retransmission mechanism, after the DSDS handset receives the feedback information returned by the network side, the DSDS handset can resend the data to be sent of the SIM card 2, so that the sending delay of the data to be sent of the SIM card 2 is large.

Disclosure of Invention

The application provides a data transmission method and device, which are used for reducing data transmission time delay of a terminal supporting a multi-card multi-standby function under the condition that data to be transmitted of at least two SIM cards conflict.

In a first aspect, a data transmission method is provided, where the method is applied to a terminal configured with multiple SIM cards, and the method includes: the terminal sends first data of a first SIM card on a first time domain resource under the condition that the first time domain resource and a second time domain resource are overlapped on a time domain; the first time domain resource is a time domain resource which is scheduled to be used for sending first data of the first SIM card; the second time domain resource is a time domain resource scheduled for transmitting second data of the second SIM card; the second SIM card is one of other SIM cards except the first SIM card in the plurality of SIM cards; and the terminal sends the second data of the second SIM card on a third time domain resource after the second time domain resource, wherein the third time domain resource is a time domain resource scheduled for sending the third data of the second SIM card.

Based on the above technical solution, in a scenario where data of two SIMs collide in a time domain, the terminal sends the first data of the first SIM card on an originally scheduled time domain resource (i.e. a first time domain resource), and delays the second data of the second SIM card to a third time domain resource for sending. That is, the terminal may send the second data of the second SIM card before receiving the feedback information of the second data. In this way, the terminal can reduce the transmission delay of the second data of the second SIM card.

In one possible design, a time interval between the second time domain resource and the third time domain resource is smaller than a time interval between the second time domain resource and a fourth time domain resource, where the fourth time domain resource is a time domain resource occupied by data sent on the second time domain resource at the next retransmission.

In one possible design, when the network to which the terminal uses the second SIM card is accessed is a long term evolution network of frequency division duplex, a difference between a subframe number of the fourth time domain resource and a subframe number of the second time domain resource is 8.

In one possible design, the data transmission method further includes: and the terminal receives second scheduling information, wherein the second scheduling information is used for scheduling the terminal to send second data on a second time domain resource, and the position of the second time domain resource on the time domain is determined according to the position of the time domain resource carrying the second scheduling information on the time domain. In this way, in the case of adopting the asynchronous HARQ, the terminal may determine the position of the second time domain resource in the time domain based on the position of the time domain resource carrying the second scheduling information in the time domain.

In one possible design, the data transmission method further includes: and the terminal receives third scheduling information, the third scheduling is used for scheduling the terminal to send third data on a third time domain resource, and the position of the third time domain resource on the time domain is determined according to the position of the time domain resource bearing the third scheduling information on the time domain. In this way, in the case of adopting the asynchronous HARQ, the terminal may determine the position of the third time domain resource in the time domain based on the position of the time domain resource carrying the third scheduling information in the time domain.

In one possible design, the data transmission method further includes: and the terminal receives second scheduling information, wherein the second scheduling information is used for scheduling the terminal to send second data on a second time domain resource and comprises configuration information of the second time domain resource. In this way, when the synchronous HARQ is adopted, the terminal may determine the position of the second time domain resource on the time domain based on the configuration information of the second time domain resource included in the second scheduling information.

In one possible design, the second scheduling information further includes a process number of a second HARQ process, the second HARQ process being a HARQ process scheduled for transmitting the second data.

In one possible design, the data transmission method further includes: and the terminal receives third scheduling information, wherein the third scheduling is used for scheduling the terminal to send third data on a third time domain resource, and the third scheduling information comprises configuration information of the third time domain resource. In this way, when the synchronous HARQ is adopted, the terminal may determine the position of the third time domain resource in the time domain based on the configuration information of the third time domain resource included in the third scheduling information.

In one possible design, the third scheduling information further includes: a process number of a third HARQ process, the third HARQ process being a HARQ process scheduled for transmitting third data.

In one possible design, the process number of the third HARQ process is different from the process number of the second HARQ process.

In one possible design, the terminal sends the second data of the second SIM card on a third time domain resource after the second time domain resource, including: the second data is transmitted on a third time domain resource using a third HARQ process.

In one possible design, the transmission delay of the second data is smaller than the first value, and/or the packet loss rate of the second data is smaller than the second value. That is, the technical solution provided in the embodiment of the present application is suitable for transmission of data of a related service (e.g., low latency), so as to ensure that the data of the related service meets a transmission requirement.

In one possible design, the data transmission method further includes: the terminal receives first scheduling information, and the first scheduling information is used for scheduling the terminal to send first data on first time domain resources.

In a second aspect, a communication apparatus is provided, including: the processing module is used for determining that first data of the first SIM card is sent on the first time domain resource under the condition that the first time domain resource and the second time domain resource are overlapped on the time domain; the first time domain resource is a time domain resource which is scheduled to be used for sending first data of the first SIM card; the second time domain resource is a time domain resource scheduled for transmitting second data of the second SIM card; the second SIM card is different from the first SIM card. The communication module is used for sending first data of the first SIM card on the first time domain resource; and sending second data of the second SIM card on a third time domain resource after the second time domain resource, wherein the third time domain resource is a time domain resource scheduled for sending third data of the second SIM card.

In one possible design, when the network to which the communication device uses the second SIM card is an lte-fdd network, the difference between the subframe number of the fourth time domain resource and the subframe number of the second time domain resource is 8.

In a possible design, the communication module is further configured to receive second scheduling information, where the second scheduling information is used to schedule the terminal to send second data on a second time domain resource, and a position of the second time domain resource in the time domain is determined according to a position of the time domain resource carrying the second scheduling information in the time domain.

In a possible design, the communication module is further configured to receive third scheduling information, where the third scheduling is used to schedule the terminal to send third data on a third time domain resource, and a position of the third time domain resource in the time domain is determined according to a position of a time domain resource carrying the third scheduling information in the time domain.

In one possible design, the communication module is further configured to receive second scheduling information, where the second scheduling information is used to schedule the terminal to send second data on a second time domain resource, and the second scheduling information includes configuration information of the second time domain resource.

In one possible design, the communication module is further configured to receive third scheduling information, where the third scheduling is used to schedule the terminal to send third data on a third time domain resource, and the third scheduling information includes configuration information of the third time domain resource.

In one possible design, the communications apparatus is configured to transmit the second data on a third time domain resource using a third HARQ process.

In one possible design, the transmission delay of the second data is smaller than the first value, and/or the packet loss rate of the second data is smaller than the second value.

In one possible design, the communication module is further configured to receive first scheduling information, where the first scheduling information is used to schedule the terminal to transmit the first data on the first time domain resource.

In a third aspect, a communication device is provided, where the communication device includes a processor and a transceiver, and the processor and the transceiver are configured to implement the method provided in any of the first aspect. Wherein the processor is configured to perform processing actions in the corresponding method, and the transceiver is configured to perform receiving/transmitting actions in the corresponding method.

In a fourth aspect, there is provided a computer program product which, when run on a computer, causes the computer to perform the method as provided by any of the designs of the first aspect.

In a fifth aspect, a computer-readable storage medium is provided, which stores computer instructions that, when executed on a computer, cause the computer to perform the method provided by any of the designs of the first aspect.

In a sixth aspect, a chip is provided, which includes: processing circuitry and transceiver pins for implementing the method as provided by any of the above-mentioned first aspect designs. The processing circuit is used for executing processing actions in the corresponding method, and the transceiving pin is used for executing receiving/transmitting actions in the corresponding method.

It should be noted that, for technical effects brought by any one of the designs in the second aspect to the sixth aspect, reference may be made to technical effects brought by a corresponding design in the first aspect, and details are not described herein again.

Drawings

Fig. 1 is a schematic view of a communication scenario of a dual-card terminal;

fig. 2(a) is a schematic view of a scenario in which data of two SIM cards of a DSDS terminal collide in a time domain;

fig. 2(b) is a schematic diagram of a data retransmission scenario;

fig. 3 is a schematic diagram of a DR-DSDS terminal according to an embodiment of the present disclosure;

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

fig. 5 is a schematic structural diagram of a mobile phone according to an embodiment of the present application;

fig. 6 is a flowchart of a data transmission method according to an embodiment of the present application;

fig. 7 is a schematic view of a data transmission scenario provided in an embodiment of the present application;

fig. 8(a) is a flowchart of another data transmission method provided in the embodiment of the present application;

fig. 8(b) is a flowchart of another data transmission method provided in the embodiment of the present application;

fig. 9(a) is a flowchart of another data transmission method provided in the embodiment of the present application;

fig. 9(b) is a flowchart of another data transmission method provided in the embodiment of the present application;

fig. 9(c) is a flowchart of another data transmission method provided in the embodiment of the present application;

fig. 10 is a flowchart of another data transmission method according to an embodiment of the present application;

fig. 11 is a schematic diagram of physical layer rescheduling according to an embodiment of the present application;

fig. 12 is a flowchart of another data transmission method according to an embodiment of the present application;

fig. 13 is a schematic diagram of MAC layer rescheduling according to an embodiment of the present application;

fig. 14 is a flowchart of another data transmission method according to an embodiment of the present application;

fig. 15 is a flowchart of another data transmission method according to an embodiment of the present application;

fig. 16 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

In the description of this application, "/" means "or" unless otherwise stated, for example, A/B may mean A or B. "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. Further, "at least one" means one or more, "a plurality" means two or more. The terms "first", "second", and the like do not necessarily limit the number and execution order, and the terms "first", "second", and the like do not necessarily limit the difference.

It is noted that, in the present application, words such as "exemplary" or "for example" are used to mean exemplary, illustrative, or descriptive. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

The data and the transport block in the embodiment of the present application have the same meaning and may be replaced with each other, which is described in a unified manner herein and will not be described in detail below.

In order to facilitate understanding of the technical solutions of the present application, the technical terms related to the present application will be briefly described below.

1. SIM card

In a mobile communication system, a SIM card may serve as an identification of the network identity of a mobile subscriber. The SIM card is used for storing user data and completing user identity authentication. One SIM card corresponds to one mobile subscriber. It should be noted that the SIM card can store the subscriber identity. For example, the user identification may be: international Mobile Subscriber Identity (IMSI) or subscription permanent identifier (SUPI).

The SIM card may be implemented in the form of a physical card, such as a standard SIM card, a Mini-SIM card, a Micro SIM card, and a Nano SIM card. This type of SIM card may also be referred to as a Universal Subscriber Identity Module (USIM) card.

The SIM card may also be implemented in the form of a built-in chip, such as an embedded subscriber identity module (eSIM) card.

The SIM card may also be implemented in software.

2. Time domain resources

In this embodiment, the granularity of the time domain resource may be a Transmission Time Interval (TTI) in an LTE system, a symbol-level short TTI, or a short TTI with a large subcarrier interval in a high-frequency system, or a radio frame, a slot, a mini-slot (mini-slot) or an OFDM symbol in a 5G system.

3、HARQ

HARQ is a technology combining Forward Error Correction (FEC) and automatic repeat request (ARQ) methods. The HARQ automatically corrects errors within the error correction capability range, and the transmitting end is required to retransmit if the error correction range is exceeded, so that the system reliability is improved, and the system transmission efficiency is also improved.

FEC refers to that data sent by a sending end includes a forward error correction code or redundant information, and after a receiving end receives the data and finds an error through checking (for example, Cyclic Redundancy Check (CRC), the error can be corrected through the forward error correction code or the redundant information, so that the sending end can reduce the number of times of retransmission (i.e., retransmission of the data).

ARQ is that a receiving end judges the correctness of received data through a check (e.g., CRC check), and if the data is received correctly, the receiving end sends ACK to inform a transmitting end, otherwise, the receiving end sends NACK to inform the transmitting end, and when the transmitting end receives NACK, the transmitting end can retransmit the data to the receiving end. ACK and NACK, i.e. HARQ feedback.

4. HARQ process

HARQ uses stop-and-wait protocol (stop-and-wait protocol) to transmit data. In the stop-wait protocol, after a sender sends a Transport Block (TB), the sender stops to wait for an acknowledgement. The receiving end performs ACK feedback or NACK feedback for the TB using 1-bit information. But the sender stops waiting for an acknowledgement after each transmission, resulting in low throughput. Thus, multiple parallel HARQ processes may be used: while one HARQ process is waiting for an acknowledgement, the transmitting end may continue to transmit data using another HARQ process.

Illustratively, the terminal transmits TB1 by using the 1 st HARQ process, finishes transmitting TB1 at time T1, receives HARQ feedback of TB1 at time T2, waits for acknowledgement of TB1 during the time period from T1 to T2, may transmit TB2 by using the 2 nd HARQ process during the time period waiting for acknowledgement, finishes transmitting TB2 at time T2, receives HARQ feedback of TB2 at time T3, waits for acknowledgement of TB2 during the time period from T2 to T3, and may transmit TB3 by using the 3 rd HARQ process during the time period waiting for acknowledgement.

It should be noted that each HARQ process can process one TB in one Transmission Time Interval (TTI). TB and HARQ process are corresponding one by one.

5. Asynchronous HARQ (asynchronous HARQ)

Asynchronous HARQ means that data retransmission can occur at any time, and HARQ processes can be used in any order.

It should be understood that in the case of asynchronous HARQ, the receiving end does not know the occurrence time of transmission, and thus the HARQ process number needs to be transmitted to the receiving end together with data.

The advantages of asynchronous HARQ are: retransmission scheduling has greater flexibility.

Currently, an NR system employs an asynchronous HARQ when performing uplink data transmission in a dynamic scheduling manner.

6. Synchronous HARQ (synchronous HARQ)

Synchronous HARQ means that the HARQ process can only perform data retransmission at fixed time instants. With synchronous HARQ, a device can only use a particular HARQ process on a particular subframe.

The advantages of synchronous HARQ are: since the receiving end knows the time when the transmission occurs in advance, no additional signaling overhead is needed to represent the sequence number of the HARQ process. The HARQ process number may be derived directly from the system frame number/subframe number.

Currently, the LTE system employs synchronous HARQ during uplink data transmission. The following briefly introduces synchronous HARQ in the LTE system.

1) Frequency Division Duplexing (FDD) -LTE

For FDD-LTE systems, if a UE receives an uplink grant (UL grant) or a physical hybrid automatic repeat indicator channel (PHICH) in subframe n, the UE may transmit a Physical Uplink Shared Channel (PUSCH) in subframe n + 4. The PUSCH is used to carry uplink data.

For FDD-LTE systems, if a UE receives a PHICH on subframe n, the PHICH corresponds to a PUSCH transmitted by the UE on subframe n-4.

2) Time Division Duplexing (TDD) -LTE

For TDD UL/DL configurations 1-6, if the UE receives a UL grant or PHICH (NACK only), in subframe n, the UE transmits a corresponding PUSCH in subframe n + k 1. Illustratively, the value of k1 can be determined according to table 1 below.

TABLE 1

For example, taking TDD UL/DL Configuration as 1 for example, assuming that the UE receives the UL grant in subframe 1, the UE shall send the corresponding PUSCH in subframe 7.

For TDD UL/DL configurations 1-6, if the UE receives the PHICH in subframe n, the PHICH corresponds to the PUSCH transmitted on subframe n-k 2. Illustratively, the value of K2 can be determined according to table 2 below.

TABLE 2

The above is an introduction of terms related to the embodiments of the present application, and the description is not repeated herein.

Currently, when data of two SIM cards conflict in a time domain, the DSDS terminal selects to send data of one SIM card first and discards data of the other SIM card. The DSDS terminal then reuses the retransmission mechanism to retransmit the discarded data.

Illustratively, as shown in fig. 2(a), the slot #14 occupied by the data 3 overlaps the slot #17 occupied by the data 6 in the time domain, so that the data 3 of the SIM card 2 collides with the data 6 of the SIM card 1 in the time domain. After arbitration, the terminal decides to send packet 6 of SIM card 1 and discards packet 3 of SIM card 2. After that, the terminal can retransmit the data packet 3 of the SIM card 2 after receiving the feedback information of the network device.

However, the retransmission mechanism causes a large transmission delay. And, the higher the network protocol level initiating the retransmission, the larger the retransmission delay and the data load, and the user experience is reduced. As shown in fig. 2(b), the delay time of the physical layer retransmission reaches the millisecond level; the delay time of retransmission of the MAC layer reaches the level of hundreds of milliseconds; the delay time of retransmission of the higher layer protocol layer (i.e. the protocol layer above the MAC layer, e.g. the RRC layer) reaches the order of seconds.

It can be seen that, for the DSDS terminal, in a scenario where data of two SIM cards collide in a time domain, there are problems of high retransmission rate of data and large transmission delay.

In order to solve the above technical problem, an embodiment of the present application provides a data transmission method, which is applied to a terminal configured with multiple SIM cards. The technical idea of the data transmission method is as follows: when the data of the SIM card 1 and the data of the SIM card 2 collide in the time domain, the terminal may preferentially transmit the data of the SIM card 1 and delay the transmission of the data of the SIM 2. Therefore, the terminal does not need to wait for the feedback information of the network equipment to the data of the SIM card 2, and can transmit the data of the SIM card as soon as possible by flexibly adjusting the sending time of the data of the SIM card 2, thereby reducing the data transmission delay.

For convenience of description, a technical scheme of the prior art is hereinafter referred to as a "retransmission transmission scheme", and a technical scheme provided in the embodiments of the present application is referred to as a "delayed transmission scheme".

Optionally, in order to pursue a larger transmission performance, data of any service may adopt a "delayed transmission mode".

Optionally, in order to balance transmission performance and complexity, the data of the first type of service is in a "retransmission sending mode", and the data of the second type of service is in a "delayed sending mode".

Illustratively, the first type of service refers to a service with low implementation requirements, such as a file transfer service.

Illustratively, the second type of service refers to services that have high requirements for implementation, such as voice call services, video session services, and the like. Therefore, the data of the second type service is data requiring that the transmission delay is smaller than the first value and/or data requiring that the packet loss rate is smaller than the second value.

Fig. 3 is a schematic structural diagram of a terminal supporting DR-SDSD according to an embodiment of the present application. As shown in fig. 3, the terminal 200 may include: a first SIM card interface 210, a second SIM card interface 220, a manager 240 coupled to the first SIM card interface 210 and the second SIM card interface 220, respectively, and a processor 230 coupled to the manager 240, the processor 230 being connected to the transceiver 250. The Processor 230 may be a baseband Processor (BBP). As shown in fig. 3, the transceiver 2150 includes an rf Rx1 path, an rf Rx2 path, and an rf Tx path.

The first SIM card interface 210 is used for installing a SIM card 1 and communicating with the SIM card 1, and the second SIM card interface 220 is used for installing a SIM card 2 and communicating with the SIM card 2.

For example, each SIM card configured in the terminal in this embodiment of the application may be a SIM card supporting any one of Global System for Mobile Communication (GSM) systems, Universal Mobile Telecommunications System (UMTS) systems, Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) systems, Long Term Evolution (LTE) systems, Code Division Multiple Access (CDMA) systems, and the like.

Optionally, only two SIM card interfaces are shown in fig. 3, and the terminal 200 may be configured with more SIM card interfaces.

It should be noted that the rf Tx path in the embodiments of the present invention may also be referred to as Tx rf resource or transmitter (transmitter), and the rf Rx path may also be referred to as Rx rf resource or Receiver (Receiver).

In the embodiment of the present invention, the RF Tx path and the RF Rx1 path may be referred to as an RF main channel, and the RF Rx2 path may be referred to as an RF sub-channel. That is, the uplink and downlink RF devices (such as RF Tx path and RF Rx1 path) in the RF main channel are multiplexed, and the RF sub-channel has only the downlink RF device (such as RF Rx2 path).

Fig. 4 shows a schematic diagram of a communication system provided in an embodiment of the present application. As shown in fig. 4, the terminal 200 may install at least two SIM cards, for example, a first SIM card and a second SIM card. The first SIM card in the terminal 200 may be a main card of the terminal 200, and the second SIM card may be a sub card of the terminal 200; alternatively, the second SIM card in the terminal 200 may be a primary card of the terminal 200, and the first SIM card may be a secondary card of the terminal 200.

The terminal 200 may establish a wireless connection with the first network device 300 using the first SIM card. In this way, the terminal 200 may transmit data of the first SIM card to and from the first network device 300.

Accordingly, the terminal 200 may establish a wireless connection with the second network device 400 using the second SIM card. In this way, the terminal 200 and the network device 400 can mutually transmit the data of the SIM card 2.

The first network device 300 and the second network device 400 may be the same network device or different network devices. It should be understood that the second network device 300 and the first network device 400 may be the same network device or may be different network devices. For example, if the first SIM card and the second SIM card belong to the same operator and support the same network system, the first network device 300 and the second network device 400 may be the same network device. For another example, if the first SIM card and the second SIM card do not belong to the same operator, the first network device 300 and the second network device 400 are not the same network device. The embodiments of the present application are described herein in a unified manner, and will not be described in detail below.

The network device may be a base station or a base station controller for wireless communication, etc. For example, the base station may include various types of base stations, such as: a micro base station (also referred to as a small station), a macro base station, a relay station, an access point, and the like, which are not specifically limited in this embodiment of the present application. In this embodiment, the base station may be an evolved node B (eNB or e-NodeB) in Long Term Evolution (LTE), an eNB in internet of things (IoT) or narrowband internet of things (NB-IoT), a base station in a future 5G mobile communication network or a Public Land Mobile Network (PLMN) in future evolution, which is not limited in this embodiment. In this embodiment of the present application, the apparatus for implementing the function of the network device may be a network device, or may be an apparatus capable of supporting the network device to implement the function, for example, a chip system. In this embodiment of the present application, a device for implementing a function of a network device is taken as an example, and the technical solutions provided in this embodiment of the present application are described.

A network device, such as a base station, generally includes a Base Band Unit (BBU), a Radio Remote Unit (RRU), an antenna, and a feeder for connecting the RRU and the antenna. Wherein, the BBU is used for being responsible for signal modulation. The RRU is responsible for radio frequency processing. The antenna is responsible for the conversion between guided waves on the cable and space waves in the air. On one hand, the length of a feeder line between the RRU and the antenna is greatly shortened by the distributed base station, so that the signal loss can be reduced, and the cost of the feeder line can also be reduced. On the other hand, the RRU and the antenna are smaller, so that the RRU can be installed anywhere, and the network planning is more flexible. Besides RRU remote, BBUs can be centralized and placed in a Central Office (CO), and the centralized mode can greatly reduce the number of base station rooms, reduce the energy consumption of corollary equipment, particularly air conditioners, and reduce a large amount of carbon emission. In addition, after the scattered BBUs are collected and become the BBU baseband pool, unified management and scheduling can be realized, and resource allocation is more flexible. In this mode, all physical base stations evolve into virtual base stations. All virtual base stations share information of data receiving and sending, channel quality and the like of users in a BBU baseband pool, and cooperate with each other to realize joint scheduling.

In some deployments, a base station may include a Centralized Unit (CU) and a Distributed Unit (DU). The base station may also include an Active Antenna Unit (AAU). The CU realizes part of the functions of the base station and the DU realizes part of the functions of the base station. For example, the CU is responsible for processing non-real-time protocols and services, and implementing functions of a Radio Resource Control (RRC) layer and a Packet Data Convergence Protocol (PDCP) layer. The DU is responsible for processing a physical layer protocol and a real-time service, and implements functions of a Radio Link Control (RLC), a Medium Access Control (MAC), and a Physical (PHY) layer. The AAU implements part of the physical layer processing functions, radio frequency processing and active antenna related functions. Since the information of the RRC layer eventually becomes or is converted from the information of the PHY layer, the higher layer signaling, such as RRC layer signaling or PDCP layer signaling, can also be considered to be sent by the DU or from the DU + AAU under this architecture. It is to be understood that the network device may be a device comprising one or more of a CU node, a DU node, an AAU node. In addition, a CU may be divided into network devices in the RAN, and may also be divided into network devices in a Core Network (CN), which is not limited herein.

The terminal is a device with wireless transceiving function. The terminal can be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal device may be a User Equipment (UE). Wherein the UE comprises a handheld device, an in-vehicle device, a wearable device, or a computing device with wireless communication capabilities. Illustratively, the UE may be a mobile phone (mobile phone), a tablet computer, or a computer with wireless transceiving function. The terminal device may also be a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a wireless terminal in smart grid, a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and so on. In the embodiment of the present application, the apparatus for implementing the function of the terminal may be the terminal, or may be an apparatus capable of supporting the terminal to implement the function, such as a chip system. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices.

The following embodiments take a mobile phone as an example to illustrate how a terminal supporting DR-DSDS implements a specific technical solution in the embodiments. As shown in fig. 5, the terminal in this embodiment may be a mobile phone 500. The embodiment will be specifically described below by taking the mobile phone 500 as an example.

It should be understood that the illustrated handset 500 is only one example of a terminal supporting DR-DSDS, and that the handset 500 may have more or fewer components than shown in the figures, may combine two or more components, or may have a different configuration of components. The various components shown in fig. 5 may be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.

As shown in fig. 5, the cellular phone 500 includes: a processor 510, a system-on-chip device 520, a display controller 530, a CODEC (CODEC)540, a manager 550, a memory 560, an input device 570, a modem 580, a transceiver 590, a power supply 591, and the like.

Those skilled in the art will appreciate that the handset configuration shown in fig. 5 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

As shown in fig. 5, the mobile phone 500 may further include a first SIM card interface 551 and a second SIM card interface 552. The first SIM card interface 551 is used for communication with a SIM card 1553, and the second SIM card interface 552 is used for communication with a SIM card 2555. For example, the first SIM card interface 551 and the second SIM card interface 552 may be SIM card connectors including a main body having a SIM card receiving space, and a plurality of communication slots for receiving conductive terminals of a received SIM card. Electrical signaling contact with the SIM card may be made through the conductive terminals and the socket. Example interfaces may include serial or parallel (e.g., 6 pin or 8 pin) connections. Further, multiple SIM card sizes may be provided (e.g., full size SIM, mini SIM, or micro SIM). In other embodiments, handset 500 may not include multiple SIM card interfaces when multiple subscriptions are associated with a common identity module (e.g., a common SIM). The manager 550 is used to manage the SIM card 1553 and the SIM card 2554.

As shown in fig. 5, the cell phone 500 can also include a speaker 541 and a microphone 542 coupled to the CODEC 540. Fig. 5 also indicates that manager 550 can be coupled to processor 510, and to a modem 580 in communication with transceiver 590. Where the transceiver 590 is connected to one or more antennas. An example of only one antenna is shown in fig. 5.

In certain embodiments, transceiver 590 is coupled to multiple antennas, and modem 580 supports diversity, where one antenna of the multiple antennas is a primary antenna and the other antenna is a secondary antenna.

The transceiver 590 may be an RF circuit, which may be used for receiving and transmitting signals during information transmission and reception or during a call, and may receive downlink information of a base station and then process the received downlink information to the processor 510; in addition, data relating to uplink is transmitted to the base station. Typically, the RF circuitry includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the RF circuitry may also communicate with networks and other mobile devices via wireless communications. The wireless communication may use any communication standard or protocol including, but not limited to, global system for mobile communications, general packet radio service, code division multiple access, wideband code division multiple access, long term evolution, email, short message service, and the like. In the embodiment of the present application, the transceiver 590 shown in fig. 5 may include two rf Rx paths and one rf Tx path (the rf Tx path, the rf Rx1 path, and the rf Rx2 path shown in fig. 5).

The memory 560 may be used to store software programs and data, among other things. The processor 510 executes various functions and data processing of the cellular phone 500 by executing software programs and data stored in the memory 560. For example, as shown in fig. 5, the memory 560 holds instructions 561 and transmission priority information 562. Instructions 561 may be executed by processor 510. For example, the instructions 561 may include instructions executable by the processor 510 to receive communication data related to the SIM card 1553 at a primary signal input of the modem 580. Wherein the above "SIM card 1553 related communication data" may be routed via the main RF path of the transceiver 590, i.e., Rx1, to the main signal input of the modem 580 (not shown in fig. 5). The instructions 561 include instructions executable by the processor 510 to receive communication data related to the SIM card 2554 at a secondary signal input of the modem 580. Therein, the above "SIM card 2554 related communication data" may be routed via the secondary RF path of the transceiver 590, i.e., Rx2, to a secondary signal input (not shown in fig. 5) of the modem 580.

The memory 560 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required by at least one function, and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone 500, and the like. Further, the memory 560 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device. In the following embodiments, memory 560 stores an operating system that enables cell phone 500 to function, such as those developed by apple IncOf hair

Operating System, developed by Google

Open source operating system, developed by Microsoft corporation

An operating system, etc.

An input device 570, such as a touch screen, can be used to receive entered numeric or character information and generate signal inputs relating to user settings and function control of the handset 500. Specifically, the input device 570 may include a touch panel disposed on the front surface of the mobile phone 500, which can collect the touch operations of the user (such as the operations of the user on or near the touch panel by using any suitable object or accessory, such as a finger, a stylus, etc.), and drive the corresponding connection device according to a preset program. Alternatively, the touch panel may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 510, and can receive and execute instructions sent by the processor 510. In addition, the touch panel may be implemented in various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave.

The display 531 (i.e., display screen) can be used to display information input by or provided to the user as well as a Graphical User Interface (GUI) for various menus of the handset 500. The display 531 may include a display panel disposed on the front of the handset 500. The display panel may be configured in the form of a liquid crystal display, a light emitting diode, or the like.

When the touch panel detects a touch operation on or near the touch panel, the touch operation is transmitted to the processor 510 to determine a touch event, and then the processor 510 provides a corresponding visual output on the display panel according to the type of the touch event. Although the touch panel and the display panel are shown as two separate components in fig. 5 to implement the input and output functions of the mobile phone 500, in some embodiments, the touch panel and the display panel may be integrated to implement the input and output functions of the mobile phone 500, and the integrated touch panel and display panel may be referred to as a touch display screen.

In some other embodiments, the touch panel may further be provided with a pressure sensing sensor, so that when a user performs a touch operation on the touch panel, the touch panel can also detect a pressure of the touch operation, and further the mobile phone 500 can detect the touch operation more accurately.

The cell phone 500 may also include at least one sensor 543, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel according to the brightness of ambient light, the proximity light sensor is disposed on the front side of the mobile phone 500, and when the mobile phone 500 moves to the ear, the mobile phone 500 turns off the power supply of the display panel according to the detection of the proximity light sensor, so that the mobile phone 500 may further save power. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing gestures of a mobile phone (such as horizontal and vertical screen conversion, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometers and taps), and the like; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone 500, further description is omitted here.

CODEC 540, speaker 541, microphone 542 may provide an audio interface between a user and cell phone 500. The CODEC 540 may transmit the electrical signal converted from the received audio data to the speaker 541, and convert the electrical signal into an audio signal by the speaker 541 and output the audio signal; on the other hand, the microphone 542 converts the collected sound signals into electrical signals, which are received by the CODEC 540 and converted into audio data, which is then output to the RF circuit 510 to be sent to, for example, another cellular phone, or to the memory 560 for further processing.

The processor 510 is a control center of the mobile phone 500, connects various parts of the entire mobile phone by using various interfaces and lines, and performs various functions of the mobile phone 500 and processes data by operating or executing software programs stored in the memory 560 and calling data stored in the memory 560, thereby performing overall monitoring of the mobile phone. In some embodiments, processor 510 may include one or more processing units; processor 510 may also integrate an application processor, which primarily handles operating systems, user interfaces, applications, etc., and a modem processor, which primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 510.

The above-described handset 500 may further include a bluetooth module and a Wi-Fi module. The bluetooth module is used for information interaction with other devices through a short-range communication protocol such as bluetooth. For example, the mobile phone 500 may establish a bluetooth connection with a wearable electronic device (e.g., a smart watch) having a bluetooth module through the bluetooth module, so as to perform data interaction. Wi-Fi belongs to the short-distance wireless transmission technology, and the mobile phone 500 can help a user to receive and send e-mails, browse webpages, access streaming media and the like through a Wi-Fi module, and provides wireless broadband internet access for the user.

The handset 500 also includes a power source 591 (e.g., a battery) for powering the various components. The power supply may be logically coupled to the processor 510 via a power management system to manage charging, discharging, and power consumption via the power management system. It is understood that, in the following embodiments, the power supply 591 may be used to supply power to the display panel and the touch panel. The methods in the following embodiments can be implemented in the mobile phone 500 having the above hardware structure.

As shown in fig. 6, for a data transmission method provided in this embodiment of the present application, the method is applied to a terminal configured with multiple SIM cards, and the method includes the following steps:

s101, the terminal determines that the first time domain resource and the second time domain resource are overlapped on the time domain.

The first time domain resource is a time domain resource scheduled to be used for sending first data of the first SIM card. The second time domain resource is a time domain resource scheduled for transmitting second data of the second SIM card.

It should be understood that the first time domain resource and the second time domain resource have an overlap in the time domain, which may be: the first time domain resource and the second time domain resource have partial overlap or complete overlap in time domain.

Optionally, when the data of the two SIM cards conflict in the time domain, the terminal may determine that the data with the high priority obtains the transmission authorization according to the priority of the data of the two SIM cards, and the data with the low priority does not obtain the transmission authorization. It should be understood that data that acquires authorization for transmission may be sent normally.

It should be understood that the priority of the data may be determined according to the quality of service (quality of service) required by the data, the service type of the data, and the like, and this embodiment of the present application is not particularly limited thereto. For example, the priority of the data of the voice service may be higher than the priority of the data of the file transfer service.

For example, the following specifically describes the processing of the first data and the second data by the terminal by taking the acquisition of the first data to the transmission authorization as an example.

S102, the terminal sends first data of the first SIM card in the first time domain resource.

Optionally, the first data may be carried on the first PUSCH.

And S103, the terminal sends second data on the third time domain resource.

Wherein the third time domain resource is a time domain resource scheduled for transmitting third data of the second SIM card. It is to be understood that the third data is different from the second data.

In an embodiment of the application, the third time domain resource is located after the second time domain resource. For example, if the time domain resource takes the symbol as the granularity, the third time domain resource is located after the second time domain resource, which specifically means: the start symbol of the third time domain resource is located after the end symbol of the second time domain resource. For another example, taking the time domain resource as the subframe as the granularity, the third time domain resource is located behind the second time domain resource, which specifically means: the subframe occupied by the third time domain resource is located after the subframe occupied by the second time domain resource.

Optionally, when the communication system to which the second SIM card is accessed adopts synchronous HARQ during uplink data transmission, a time interval between the third time domain resource and the second time domain resource is smaller than a time interval between the second time domain resource and the fourth time domain resource. The fourth time domain resource refers to a time domain resource occupied by the data transmitted on the second time domain resource during retransmission.

It should be understood that, in case of synchronous HARQ, a time interval between the second time domain resource and the fourth time domain resource is a first preset value.

In an LTE system, the time interval between two time domain resources may be expressed in terms of the difference between the subframe numbers of the two time domain resources.

Taking FDD-LTE system as an example, the difference between the subframe number of the second time domain resource and the subframe number of the fourth time domain resource is 8. For example, if the second time domain resource is subframe 1, the fourth time domain resource is subframe 9.

Taking the TDD-LTE system as an example, the difference between the subframe number of the second time domain resource and the subframe number of the fourth time domain resource may be k1+ k 2. Where k1 is the difference between the subframe number of the second time domain resource and the subframe number of the time domain resource carrying the feedback information. K2 is the difference between the subframe number of the time domain resource carrying the feedback information and the subframe number of the fourth time domain resource. For example, the determination of k1 can be found in table 1. The determination of k2 can be found in table 2.

In the embodiment of the present application, the third time domain resource is not overlapped with the first time domain resource. Or, the third time domain resource is subsequent to the first time domain resource. In this way, it is avoided that the second data and the first data collide again in the time domain, which results in the terminal needing to re-schedule the time domain resource for the second data.

Optionally, the second data may be carried on a second PUSCH. The second PUSCH is different from the first PUSCH.

For example, the embodiment shown in fig. 6 is explained, as shown in fig. 7, when data 3 of SIM card 2 and data 5 of SIM card 1 collide with each other in the time domain, the terminal, after having arbitrated, preferentially transmits data 5 of SIM card 1, and schedules data 3 of SIM card 2 to slot #16 for transmission.

Based on the embodiment shown in fig. 6, in a scenario where data of two SIMs collide in a time domain, the terminal sends the first data of the first SIM card on an originally scheduled time domain resource (i.e., a first time domain resource), and delays the second data of the second SIM card to a third time domain resource for sending. That is, the terminal may send the second data of the second SIM card before receiving the feedback information of the second data. In this way, the terminal can reduce the transmission delay of the second data of the second SIM card.

In the embodiment of the present application, the uplink data transmission of the terminal may be based on a "request-grant" transmission mechanism or an uplink dynamic grant-free transmission mechanism.

The "request-grant" transmission mechanism may also be referred to as a dynamic scheduling mechanism. The "request-grant" transmission mechanism specifically includes: when the terminal has data to be transmitted, the terminal dynamically applies for the uplink resource from the network, so that the terminal can transmit the data on the uplink resource allocated by the network device.

The uplink dynamic grant-free transmission mechanism may also be referred to as a semi-persistent scheduling mechanism. The uplink dynamic-authorization-free transmission mechanism specifically comprises: after the terminal and the network device establish the RRC radio connection, the network device may allocate the configuration grant resources exclusively for the terminal. And then, when the terminal has data to be transmitted, the terminal can directly use the configuration authorization resource to transmit the data.

It should be appreciated that the "request-grant" transmission mechanism is more flexible than the uplink dynamic grant-free transmission mechanism. Compared with a request-grant transmission mechanism, the uplink dynamic-grant-free transmission mechanism has lower data transmission delay.

Optionally, in terms of the first data of the first SIM card, in the case of adopting the uplink dynamic-grant-free transmission mechanism, based on the embodiment shown in fig. 6, as shown in fig. 8(a), the data transmission method further includes step S201 before step S101.

S201, the terminal receives first configuration information sent by first network equipment.

The first configuration information may be used to configure the first configuration authorized time domain resource for the terminal. It should be understood that the first configuration authorizes the time domain resource to be associated with the first SIM card. The first configuration authorizes the time domain resource to be used for transmitting data of the first SIM card, such as the first data.

Optionally, the first configuration information may also be used to configure, for the terminal, other transmission parameters used in uplink dynamic-grant-free transmission, such as an open-loop power control related parameter, a waveform, a redundancy version sequence, a repetition number, a frequency hopping pattern, a Resource allocation type, a HARQ process number, a DMRS related parameter, an MCS table, a Resource Block Group (RBG) size, a frequency domain Resource, and an MCS.

Optionally, the first configuration information may be carried in RRC signaling or DCI signaling, which is not limited in this embodiment of the present invention.

Based on the embodiment shown in fig. 8(a), the terminal may determine the first configuration authorized time domain resource according to the first configuration information. Furthermore, the terminal may determine the first time domain resource according to the first configuration authorized time domain resource. It should be understood that the first time domain resource is a portion or all of the first configuration authorized time domain resource.

Optionally, in the case of using the "request-authorization" mechanism for the first data of the first SIM card, based on the embodiment shown in fig. 6, as shown in fig. 8(b), the data transmission method further includes steps S301 to S302 before step S101.

S301, the terminal sends first request information to the first network equipment.

The first request information is used for indicating that the terminal requests to send first data of the first SIM card.

Optionally, the first request information may also be used to indicate the size (or data amount) of the first data.

Alternatively, the first request message may have another name, such as a Buffer Status Report (BSR).

S302, the terminal receives first scheduling information sent by the first network equipment.

The first network equipment is connected with the terminal by using the first SIM card.

The first scheduling information is used for scheduling the terminal to transmit first data on the first time domain resource.

Optionally, the first scheduling information may be a UL grant or a PHICH.

It should be understood that the first scheduling information has different designs in different scenarios. The first scheduling information is described below with reference to a specific application scenario.

In a first scenario, a terminal uses a network to which a first SIM card is accessed to adopt a synchronous HARQ during uplink data transmission. Illustratively, the network to which the terminal accesses by using the first SIM card is an LTE network.

Based on scenario one, the location of the first time domain resource in the time domain may be determined according to the location of the time domain resource carrying the first scheduling information in the time domain.

Optionally, the position of the time domain resource in the time domain may be determined by a subframe number, a timeslot number, a symbol number, and the like, which are described herein in a unified manner and are not described in detail below.

For example, taking the communication system as an LTE system as an example, assuming that the time domain resource is a subframe, the subframe number Q1 of the first time domain resource is determined according to the subframe number n1 of the time domain resource carrying the first scheduling information. For example, Q1 ═ n1+ m 1.

In the FDD-LTE system, m1 is 4. In the TDD-LTE system, m1 may be determined according to TDD UL/DL configuration and n 1. TDD UL/DL configuration is configured to the terminal by the network side.

And in a second scenario, the terminal uses a network accessed by the first SIM card to adopt synchronous HARQ during uplink data transmission. Illustratively, the network to which the terminal accesses by using the first SIM card is an NR system.

Based on the second scenario, the first scheduling information includes configuration information of the first time domain resource. Illustratively, the configuration information of the first time domain resource is used to indicate the following parameters: a slot offset value, a starting symbol of the first time domain resource, a symbol length of the first time domain resource, etc. The time slot offset value included in the configuration information of the first time domain resource is used for determining the time slot in which the first time domain resource is located.

In this way, the terminal may determine the position of the first time domain resource on the time domain according to the configuration information of the first time domain resource included in the first scheduling information.

Optionally, the first scheduling information may further include a process number of the first HARQ process. The first HARQ process is a HARQ process used for transmitting first data in a HARQ entity corresponding to the first SIM card.

In the embodiments of the present application, the process number may also be referred to as a number, an identifier, or the like, and is not limited thereto.

Based on the embodiment shown in fig. 8(b), the terminal may determine the first time domain resource according to the first scheduling information. Further, the terminal may also determine an HARQ process for transmitting the first data in the first SIM card.

Optionally, in regard to the second data and/or the third data of the second SIM card, in the case of adopting the uplink dynamic-authorization-free transmission mechanism, based on the embodiment shown in fig. 6, as shown in fig. 9(a), the data transmission method further includes step S401 before step S101.

S401, the terminal receives second configuration information sent by the second network equipment.

And the second network equipment is connected with the terminal by using a second SIM card.

The second configuration information is used for configuring a second configuration authorized time domain resource for the terminal. It should be appreciated that the second configuration authorizes the time domain resource to be associated with the second SIM card. The second configuration authorizes the time domain resource to be used for transmitting data of the second SIM card, such as the second data or the third data.

Optionally, the second configuration information may also be used to configure other transmission parameters used when the terminal performs uplink dynamic-grant-free transmission, such as an open-loop power control related parameter, a waveform, a redundancy version sequence, a repetition number, a frequency hopping pattern, a resource allocation type, a HARQ process number, a DMRS related parameter, an MCS table, a resource block size, a frequency domain resource, and an MCS.

It should be understood that the terminal may determine, according to parameters such as the number of HARQ processes, the time domain resource corresponding to the HARQ process in the second configuration authorized time domain. For details, reference may be made to the prior art, and further description is omitted here.

Optionally, the second configuration information may be carried in RRC signaling or DCI signaling, which is not limited in this embodiment of the present invention.

Based on the embodiment shown in fig. 9(a), the terminal may determine the second configuration authorized time domain resource according to the second configuration information. Furthermore, the terminal may determine the second time domain resource and/or the third time domain resource according to the second configuration authorized time domain resource. It is to be understood that the second time domain resource may be a subset of the second configuration authorized time domain resource. The third time domain resource may be a subset of the second configuration authorized time domain resource.

Optionally, in the case of using the "request-authorization" mechanism for the second data of the second SIM card, based on the embodiment shown in fig. 6, as shown in fig. 9(b), the data transmission method further includes steps S501-S502 before step S101.

S501, the terminal sends second request information to second network equipment.

The second request information is used for indicating that the terminal requests to send second data of the second SIM card.

Optionally, the second request information may also be used to indicate a size of the second data.

Alternatively, the second request message may have another name, such as BSR.

S502, the terminal receives second scheduling information sent by the second network equipment.

And the second scheduling information is used for scheduling the terminal to transmit second data on the second time domain resource.

Optionally, the second scheduling information may be a UL grant or a PHICH.

It should be understood that the second scheduling information has a different design in different scenarios. The second scheduling information is described below with reference to a specific application scenario.

In the first scenario, the terminal uses a network to which the second SIM card is accessed to adopt a synchronous HARQ during uplink data transmission. Illustratively, the network to which the terminal accesses by using the second SIM card is an LTE network.

Based on scenario one, the location of the second time domain resource in the time domain may be determined according to the location of the time domain resource carrying the second scheduling information in the time domain.

For example, taking the communication system as an LTE system as an example, assuming that the time domain resource is a subframe, the subframe number Q2 of the second time domain resource is determined according to the subframe number n2 of the time domain resource carrying the second scheduling information. For example, Q2 ═ n2+ m 2.

In the FDD-LTE system, m2 is 4. In the TDD-LTE system, m2 may be determined according to TDD UL/DL configuration and n 2. TDD UL/DL configuration is configured to the terminal by the network side.

And in a second scenario, the terminal adopts asynchronous HARQ when the network accessed by the second SIM card is used for uplink data transmission. Illustratively, the network to which the terminal accesses by using the second SIM card is an NR network.

Based on scenario two, the second scheduling information includes configuration information of the second time domain resource. Illustratively, the configuration information of the second time domain resource is used to indicate the following parameters: a slot offset value, a starting symbol of the second time domain resource, a symbol length of the second time domain resource, etc. And the time slot offset value included in the configuration information of the second time domain resource is used for determining the time slot in which the second time domain resource is located.

In this way, the terminal may determine the second time domain resource according to the configuration information of the second time domain resource included in the second scheduling information.

Optionally, the second scheduling information may further include a process number of the second HARQ process. The second HARQ process is a HARQ process used for transmitting second data in a HARQ entity corresponding to the second SIM card.

Based on the embodiment shown in fig. 9(b), the terminal may determine the second time domain resource according to the second scheduling information. Further, the terminal may also determine an HARQ process for transmitting the second data in the second SIM card.

Optionally, in the case of using the "request-authorization" mechanism for the third data of the second SIM card, based on the embodiment shown in fig. 6, as shown in fig. 9(c), the data transmission method further includes steps S601-S602 before step S103. It should be understood that the embodiment of the present application does not limit the execution sequence between steps S601-S602 and steps S101-S102.

S601 (optional), the terminal sends the third request information to the second network device.

The third request information is used for indicating that the terminal requests to send third data of the second SIM card.

Optionally, the third request information may also be used to indicate a size of the third data.

Alternatively, the third request message may have another name, such as BSR.

S602, the terminal receives third scheduling information sent by the second network device.

And the third scheduling information is used for scheduling the terminal to transmit third data on the third time domain resource.

Optionally, the third scheduling information may be a UL grant or a PHICH.

It should be understood that the third scheduling information has a different design in different scenarios. The third scheduling information is described below with reference to a specific application scenario.

Based on scenario one, the location of the third time domain resource in the time domain may be determined according to the location of the time domain resource carrying the third scheduling information in the time domain.

Illustratively, taking the communication system as an LTE system as an example, assuming that the time domain resource is a subframe, the subframe number Q3 of the third time domain resource is determined according to the subframe number n3 of the time domain resource carrying the third scheduling information. For example, Q3 ═ n3+ m 3.

In the FDD-LTE system, m3 is 4. In the TDD-LTE system, m3 may be determined according to TDD UL/DL configuration and n 2. TDD UL/DL configuration is configured to the terminal by the network side.

Based on scenario two, the third scheduling information includes configuration information of the third time domain resource. Illustratively, the configuration information of the third time domain resource is used to indicate the following parameters: a slot offset value, a starting symbol of the third time domain resource, a symbol length of the third time domain resource, etc. And the time slot offset value included in the configuration information of the third time domain resource is used for determining the time slot in which the third time domain resource is located.

In this way, the terminal may determine the second time domain resource according to the configuration information of the third time domain resource included in the third scheduling information.

Optionally, the third scheduling information may further include a process number of the third HARQ process. The third HARQ process is a HARQ process used for transmitting third data in the HARQ entity corresponding to the second SIM card.

Optionally, the third HARQ process is different from the second HARQ process.

Based on the embodiment shown in fig. 9(c), the terminal may determine the third time domain resource according to the third scheduling information. Further, the terminal may also determine an HARQ process for transmitting third data in the second SIM card.

Optionally, before step S103, the terminal needs to schedule the second data. The terminal scheduling mode may be a physical layer rescheduling mode or an MAC layer rescheduling mode.

Optionally, taking a physical layer rescheduling manner as an example, based on the embodiment shown in fig. 6, as shown in fig. 10, the data transmission method further includes steps S701 to S702 before step S103.

S701, the physical layer of the terminal sends first indication information to the MAC layer of the terminal.

Wherein the first indication information is used for indicating the MAC layer to temporarily stop the scheduling of the data. In this way, a collision between the data scheduling of the MAC layer and step S702 is avoided.

In this embodiment of the present application, the physical layer and the MAC layer belong to a protocol stack corresponding to the second SIM card.

S702, the physical layer of the terminal caches the second data stored in the storage area of the second HARQ process in the storage area of the third HARQ process.

Accordingly, step S103 in fig. 6 may be specifically implemented as step S703 in fig. 10.

And S703, the terminal uses the third HARQ process to send the second data on the third time domain resource.

Based on the embodiment shown in fig. 10, in a scenario where data of two SIM cards collide in a time domain, the terminal delays sending the second data of the second SIM card in a physical layer rescheduling manner, which is beneficial to reducing collision and reducing sending delay of the second data.

The embodiment shown in fig. 10 is illustrated by way of example. As shown in fig. 11, it is assumed that the terminal accesses the NR system of the first operator using the SIM card 1, and the terminal accesses the NR system of the second operator using the SIM card 2. The data 6 of the SIM card 1 of the terminal is scheduled by the NR system of the first operator to be transmitted in the time slots #15 to #17, and the data 3 of the SIM card 2 of the terminal is scheduled by the NR system of the second operator to be transmitted in the time slot # 14. It can be seen that data 3 of SIM card 2 and data 6 of SIM card 1 collide in the time domain. After the terminal has arbitrated, it decides to delay sending data 3 of SIM card 2. Therefore, in the protocol stack corresponding to the SIM card 2, the HARQ entity in the physical layer of the terminal sends the first indication information to the MAC layer, and blocks the MAC layer from performing new packet scheduling. Thereafter, the HARQ entity buffers data 3 in a storage area of any one of a plurality of HARQ processes (HARQ 0-HARQ3 in fig. 11) corresponding to slot #16, so that data 3 can be transmitted on slot # 16.

Optionally, taking a rescheduling manner of the MAC layer as an example, based on the embodiment shown in fig. 6, as shown in fig. 12, the data transmission method further includes steps S801 to S804 before step S103.

S801, the physical layer of the terminal sends a Serial Number (SN) of the second data to the MAC layer of the terminal.

S802, the MAC layer of the terminal searches the second data from the data buffer area of the MAC layer according to the serial number of the second data.

S803, the MAC layer of the terminal transmits the second data to the physical layer of the terminal.

And S804, the physical layer of the terminal stores the second data into a storage area of the third HARQ process.

Accordingly, step S103 in fig. 6 may be embodied as step S805 in fig. 12.

S805, the terminal uses the third HARQ process to send the second data on the third time domain resource.

Based on the embodiment shown in fig. 12, in a scenario where data of two SIM cards collide in a time domain, the terminal delays sending the second data of the second SIM card in a manner of MAC layer rescheduling, which is beneficial to reducing collision and reducing sending delay of the second data.

The embodiment shown in fig. 12 is illustrated by way of example. As shown in fig. 13, it is assumed that the terminal accesses the NR system of the first operator using the SIM card 1, and the terminal accesses the NR system of the second operator using the SIM card 2. The data 6 of the SIM card 1 of the terminal is scheduled by the NR system of the first operator to be transmitted in the time slots #15 to #17, and the data 3 of the SIM card 2 of the terminal is scheduled by the NR system of the second operator to be transmitted in the time slot # 14. It can be seen that data 3 of SIM card 2 and data 6 of SIM card 1 collide in the time domain. After the terminal has arbitrated, it decides to delay sending data 3 of SIM card 2. Therefore, in the protocol stack corresponding to the SIM card 2, the HARQ entity of the physical layer of the terminal sends the sequence number of data 3 to the MAC layer, the MAC layer finds data 3 from the MAC layer data buffer, and reschedules data 3 that cannot be sent in slot #14, so as to buffer data 3 into the storage area of any one HARQ process (HARQ 0-HARQ3 in fig. 13) corresponding to slot #16, so that data 3 can be sent in slot # 16.

Currently, due to uncertainty of uplink transmission of a terminal, data of one SIM card may collide with data of other SIM cards in a time domain for multiple times, and the data of the SIM card may not obtain transmission authorization, so that the data of the SIM card cannot be transmitted for a long time, and transmission delay of the data of the SIM card is increased. In addition, data of the SIM card cannot be transmitted for a long time, which may also result in the terminal backlogging more data to be transmitted, and thus the terminal needs a larger buffer space to store the data to be transmitted.

In order to solve the technical problem, the embodiment of the present application provides the following technical solutions:

the technical proposal I,

As shown in fig. 14, a data transmission method provided in the embodiment of the present application includes the following steps:

s901, the terminal determines that the target data of the target SIM card meets a preset condition.

The target SIM card may be any one of a plurality of SIM cards configured by the terminal.

Illustratively, the preset conditions are: when the target data of the target SIM card conflicts with the data of other SIM cards in the time domain, the target data of the target SIM card is not authorized to be transmitted.

Optionally, the conflict between the target data of the target SIM card and the data of other SIM cards in the time domain may be: the time domain resources scheduled for transmitting the target data of the target SIM card overlap in time domain with the time domain resources scheduled for transmitting the data of other SIM cards.

Optionally, the target data of the target SIM card is not obtained to the transmission authorization, which may be because: the priority of the target data of the target SIM card is lower than that of the data of other SIM cards.

S902, the terminal raises the priority of the target data of the target SIM card.

As a possible implementation manner, the terminal increases the priority of the target data of the target SIM card from the first priority to the second priority. The difference between the second priority and the first priority may be fixed or may be dynamically variable.

Based on the embodiment shown in fig. 14, after the target data of the target SIM card conflicts with the data of other SIM cards in the time domain, the terminal increases the priority of the target data of the target SIM card to increase the probability that the target data of the target SIM card obtains the transmission authorization when the target data of the target SIM card conflicts next time. Therefore, the technical scheme of the application can solve the problem that the target data of the target SIM card cannot be transmitted for a long time, so that the sending time delay of the target data of the target SIM card is reduced. In addition, the technical scheme of the application can also enable the terminal not to need to cache more data to be sent, so as to save the cache space of the terminal.

The second technical scheme,

As shown in fig. 15, a data transmission method provided in this embodiment of the present application includes the following steps:

s1001, the terminal obtains the number of times that the target data of the target SIM card meets the preset conditions.

Illustratively, the preset conditions are: when the target data of the target SIM card conflicts with the data of other SIM cards in the time domain, the target data of the target SIM card does not acquire the transmission authorization.

As a possible implementation manner, when the target data of the target SIM card first meets a preset condition, the terminal sets a corresponding counter for the target data of the target SIM card, and sets a count value of the counter to 1. And then, when the target data of the target SIM card meets a preset condition, the terminal adds 1 to a counter corresponding to the target data of the target SIM card.

S1002, when the number of times that the target data of the target SIM card meets the preset condition is larger than or equal to a second preset value, the terminal sends the target data of the target SIM card.

The second preset value may be configured by the network device to the terminal, or may be determined by the terminal itself.

As a possible implementation manner, when the number of times that the target data of the target SIM card meets the preset condition is greater than or equal to a second preset value, the terminal sends the target data of the target SIM card no matter whether the target data of the target SIM card conflicts with the data of other SIMs in the time domain.

Based on the embodiment shown in fig. 15, when the number of times that the target data of the target SIM card meets the preset condition is greater than or equal to the second preset value, the terminal forcibly sends the target data of the target SIM card to avoid that the target data of the target SIM card cannot get a transmission opportunity due to a time-domain collision with data of other SIM cards. That is, the technical scheme of the application can alleviate the problem that the target data of the target SIM card cannot be transmitted for a long time, thereby reducing the sending time delay of the target data of the target SIM card. In addition, the technical scheme of the application can also enable the terminal not to need to cache more data to be sent, so as to save the cache space of the terminal.

It should be understood that the embodiment shown in fig. 14 and the embodiment shown in fig. 15 may be used in combination with each other.

Further, the embodiments shown in fig. 14 and 15 may be used in combination with the embodiments shown in fig. 6, 8(a), 8(b), 9(a), 9(b), 9(c), 10 and/or 12. In this case, the target data of the target SIM card in the embodiment shown in fig. 14 and 15 is the second data of the second SIM card in the embodiment shown in fig. 6.

The above description mainly introduces the scheme provided in the embodiments of the present application from the perspective of the terminal. It is understood that the terminal includes corresponding hardware structures and/or software modules for performing the respective functions in order to implement the above-described functions. The elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein may be embodied in hardware or in a combination of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present teachings.

In the embodiment of the present application, the communication apparatus may be divided into the functional modules according to the method example, for example, each functional module may be divided according to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and another division manner may be available in actual implementation.

As shown in fig. 16, a communication apparatus provided in an embodiment of the present application includes a processing module 601 and a communication module 602.

Among them, the processing module 601 is used to support the terminal to execute step S101 in fig. 6, steps S701-S702 in fig. 10, steps S801-S804 in fig. 12, steps S901-S902 in fig. 14, step S1001 in fig. 15, etc. The communication module 602 is used to support the terminal to execute steps S102-S103 in fig. 6, step S201 in fig. 8(a), steps S301-S302 in fig. 8(b), step S401 in fig. 9(a), steps S501-S502 in fig. 9(b), steps S601-S602 in fig. 9(c), step S703 in fig. 10, step S805 in fig. 12, and step S1002 in fig. 15.

As an example, the processing module 601 in fig. 16 may be implemented by the processor 230 in fig. 3, and the communication module 602 in fig. 16 may be implemented by the transceiver 250 in fig. 3.

Optionally, an embodiment of the present application further provides a computer program product carrying computer instructions, where the computer instructions, when executed on a computer, cause the computer to execute the data transmission method provided in the foregoing method embodiment.

Optionally, an embodiment of the present application further provides a computer-readable storage medium, where the computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a computer, the computer is caused to execute the data transmission method provided by the foregoing method embodiment.

Optionally, an embodiment of the present application further provides a chip, including: the processing circuit and the transceiving pin are used for realizing the data transmission method provided by the foregoing method embodiment. The processing circuit is used for executing processing actions in the corresponding method, and the transceiving pin is used for executing receiving/transmitting actions in the corresponding method.

Those of ordinary skill in the art will understand that: 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 on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (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 including one or more available media integrated servers, data centers, and the like. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., Digital Video Disk (DVD)), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one type of logical functional division, and other divisions may be realized in practice, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of devices. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each functional unit may exist independently, or two or more units may be integrated into one unit. The integrated unit may be implemented in the form of hardware, or in the form of hardware plus a software functional unit.

Through the above description of the embodiments, those skilled in the art will clearly understand that the present application can be implemented by software plus necessary general hardware, and certainly, the present application can also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solutions of the present application or portions thereof contributing to the prior art may be embodied in the form of a software product, where the computer software product is stored in a readable storage medium, such as a floppy disk, a hard disk, or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods described in the embodiments of the present application.

The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and variations or substitutions within the technical scope disclosed in the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A data transmission method, applied to a terminal configured with a plurality of SIM cards, the method comprising:

under the condition that a first time domain resource and a second time domain resource are overlapped on a time domain, first data of a first SIM card is sent on the first time domain resource; the first time domain resource is a time domain resource scheduled for sending first data of the first SIM card; the second time domain resource is a time domain resource scheduled for sending second data of a second SIM card; the second SIM card is one of the other SIM cards except the first SIM card in the plurality of SIM cards;

and sending second data of the second SIM card on a third time domain resource after the second time domain resource, wherein the third time domain resource is a time domain resource scheduled for sending third data of the second SIM card.
The method of claim 1, wherein a time interval between the second time domain resource and the third time domain resource is smaller than a time interval between the second time domain resource and a fourth time domain resource, wherein the fourth time domain resource is a time domain resource occupied by data transmitted on the second time domain resource at a next retransmission.
The method according to claim 2, wherein when the network to which the terminal accesses using the second SIM card is a long term evolution network with frequency division duplexing, the difference between the subframe number of the fourth time domain resource and the subframe number of the second time domain resource is 8.
The method according to any one of claims 1 to 3, further comprising:

and receiving second scheduling information, wherein the second scheduling information is used for scheduling the terminal to send the second data on the second time domain resource, and the position of the second time domain resource on the time domain is determined according to the position of the time domain resource carrying the second scheduling information on the time domain.
The method of claim 4, further comprising:

and receiving third scheduling information, wherein the third scheduling is used for scheduling the terminal to send the third data on the third time domain resource, and the position of the third time domain resource on the time domain is determined according to the position of the time domain resource bearing the third scheduling information on the time domain.
The method of claim 1, further comprising:

and receiving second scheduling information, where the second scheduling information is used to schedule the terminal to send the second data on the second time domain resource, and the second scheduling information includes configuration information of the second time domain resource.
The method of claim 6, wherein the second scheduling information further includes a process number of a second HARQ process, the second HARQ process being a HARQ process scheduled for transmitting the second data.
The method of claim 7, further comprising:

and receiving third scheduling information, where the third scheduling is used to schedule the terminal to send the third data on the third time domain resource, and the third scheduling information includes configuration information of the third time domain resource.
The method of claim 8, wherein the third scheduling information further comprises: a process number of a third HARQ process, the third HARQ process being a HARQ process scheduled for transmitting the third data.
The method of claim 9, wherein the process number of the third HARQ process is different from the process number of the second HARQ process.
The method according to claim 9 or 10, wherein sending the second data of the second SIM card on a third time domain resource after the second time domain resource comprises:

transmitting the second data on the third time domain resource using the third HARQ process.
The method according to any of claims 1 to 11, wherein the transmission delay of the second data is smaller than a first value, and/or the packet loss rate of the second data is smaller than a second value.
The method of any one of claims 1 to 12, further comprising:

and receiving first scheduling information, wherein the first scheduling information is used for scheduling the terminal to transmit the first data on the first time domain resource.
A communications apparatus, comprising:

the processing module is used for determining that first data of a first SIM card is sent on a first time domain resource under the condition that the first time domain resource and a second time domain resource are overlapped on a time domain; the first time domain resource is a time domain resource scheduled for sending first data of the first SIM card; the second time domain resource is a time domain resource scheduled for sending second data of a second SIM card; the second SIM card is different from the first SIM card;

the communication module is used for sending first data of a first SIM card on the first time domain resource; and sending second data of the second SIM card on a third time domain resource after the second time domain resource, wherein the third time domain resource is a time domain resource scheduled for sending third data of the second SIM card.
The communications apparatus of claim 14, wherein a time interval between the second time domain resource and the third time domain resource is less than a time interval between the second time domain resource and a fourth time domain resource, the fourth time domain resource being a time domain resource occupied by data transmitted on the second time domain resource at a next retransmission.
The communication apparatus according to claim 14 or 15, wherein when the network accessed by the communication apparatus using the second SIM card is a long term evolution network with frequency division duplexing, the difference between the subframe number of the fourth time domain resource and the subframe number of the second time domain resource is 8.
The communication device according to any one of claims 14 to 16,

the communication module is further configured to receive second scheduling information, where the second scheduling information is used to schedule the communication apparatus to send the second data on the second time domain resource, and a position of the second time domain resource in the time domain is determined according to a position of the time domain resource carrying the second scheduling information in the time domain.
The communication device of claim 17,

the communication module is further configured to receive third scheduling information, where the third scheduling is used to schedule the terminal to send the third data on the third time domain resource, and a position of the third time domain resource in the time domain is determined according to a position of the time domain resource carrying the third scheduling information in the time domain.
The communication device of claim 14,

the communication module is further configured to receive second scheduling information, where the second scheduling information is used to schedule the communication device to send the second data on the second time domain resource, and the second scheduling information includes configuration information of the second time domain resource.
The communications apparatus of claim 19, wherein the second scheduling information further includes a process number of a second HARQ process, the second HARQ process being a HARQ process scheduled for transmitting the second data.
The communication device of claim 19,

the communication module is further configured to receive third scheduling information, where the third scheduling is used to schedule the communication device to send the third data on the third time domain resource, and the third scheduling information includes configuration information of the third time domain resource.
The communications apparatus of claim 21, wherein the third scheduling information further comprises: a process number of a third HARQ process, the third HARQ process being a HARQ process scheduled for transmitting the third data.
The communications apparatus of claim 22, wherein the process number of the third HARQ process is different from the process number of the second HARQ process.
The communication device according to claim 22 or 23,

the communication device is configured to transmit the second data on the third time domain resource using the third HARQ process.
The communication device according to any of claims 14 to 24, wherein the transmission delay of the second data is smaller than a first value, and/or the packet loss rate of the second data is smaller than a second value.
The communication device according to any one of claims 14 to 25,

the communication module is further configured to receive first scheduling information, where the first scheduling information is used to schedule the communication device to transmit the first data on the first time domain resource.
A communications device comprising a processor configured to perform the processing operations of the method of any of claims 1 to 13 and a communications interface configured to perform the communications operations of the method of any of claims 1 to 13.
A computer-readable storage medium comprising computer instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 13.
A computer program product, characterized in that it comprises computer instructions which, when run on a computer, cause the computer to perform the method according to any one of claims 1 to 13.
A chip, comprising processing circuitry and transceiver pins; the processing circuit is configured to perform processing operations in the method of any one of claims 1 to 13, and the transceiver pin is configured to perform communication operations in the method of any one of claims 1 to 13.