CN111565463A

CN111565463A - Data transmission method and device

Info

Publication number: CN111565463A
Application number: CN201910117367.4A
Authority: CN
Inventors: 李军; 刘烈海; 铁晓磊; 金哲
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-02-13
Filing date: 2019-02-13
Publication date: 2020-08-21
Anticipated expiration: 2039-02-13
Also published as: CN111565463B; WO2020164482A1

Abstract

The application provides a data transmission method and device. The method comprises the following steps: a terminal determines the position of a non-anchor carrier on a frequency band, wherein the center carrier frequency F of the non-anchor carrier_DL1Satisfies the following conditions: f_DL1＝F_DL2±n×180kHz；F_DL2Is the center carrier frequency of the anchor carrier, F_DL2Is an integral multiple of 100kHz, n is a positive integer, and the anchor point carrier is in an independent mode; and the terminal transmits data on the non-anchor carrier. In the application, a new deployment scheme of the non-anchor carrier is provided under the condition that the carrier is deployed in an independent mode, so that the deployment flexibility and the spectrum efficiency of the non-anchor carrier are improved.

Description

Data transmission method and device

Technical Field

The application relates to a narrow-band Internet of things technology, in particular to a data transmission method and device.

Background

The Internet of things (IoT) is "Internet of things connected to Internet". It expands the user end of Internet to any article for information exchange and communication. Such a communication method is also called Machine Type Communications (MTC), and a node that communicates with the MTC terminal is called an MTC terminal. Typical applications of the internet of things include smart grids, smart agriculture, smart transportation, smart home, environment detection and other aspects. Since the internet of things needs to be applied in various scenes such as from outdoor to indoor and from above ground to underground, many special requirements are put on the design of the internet of things. The system comprises a technology of NarrowBand Internet of things (NB-IoT), wherein the system bandwidth in the NB-IoT technology is 180kHz, the frequency spectrum of a Long Term Evolution (LTE) network can be reused, and the mutual interference with adjacent LTE channels is reduced.

However, for the current NB-IoT technology, when the anchor carrier is deployed in a stand alone mode, the deployment of the non-anchor carrier has a problem of poor flexibility, which leads to low spectrum efficiency.

Disclosure of Invention

The application provides a data transmission method and a data transmission device, which are used for providing a new deployment scheme of a non-anchor carrier under the condition that the anchor carrier is deployed in an independent mode, and improving the deployment flexibility and the spectrum efficiency of the non-anchor carrier.

In a first aspect, the present application provides a data transmission method, which may be applied to an NB-IoT terminal, where the terminal has characteristics of low rate, low cost, low power consumption, and the like. The data transmission method may include: when the anchor carrier is deployed in an independent mode, the terminal determines the position of the non-anchor carrier on a frequency band, and then the terminal performs data transmission on the determined non-anchor carrier. Here, the center carrier frequency F of the non-anchor carrier_DL1Satisfies the following conditions: f_DL1＝F_DL2±n×180kHz，F_DL2Is the center carrier frequency of the anchor carrier, F_DL2Is an integral multiple of 100kz, and n is a positive integer.

In the present application, since F_DL1Satisfies F_DL1＝F_DL2N × 180kHz, it can be seen that more non-anchor carrier locations are added, thereby increasing the flexibility of non-anchor carrier deployment.

Further, due to F_DL1Satisfies F_DL1＝F_DL2N × 180kHz, it can be seen that there is no gap between the non-anchor and anchor carriers: (Gap), that is, anchor carriers are deployed next to non-anchor carriers, which are the anchor carrier's neighboring carriers ("adjacentCarrier relative to the anchor carrier"). Therefore, resource blocks on the frequency band are fully utilized, and the spectrum efficiency is improved.

In addition, the difference between the central carrier frequency of the anchor carrier and the central carrier frequency of the non-anchor carrier is integral multiple of 180kHz, and 180kHz is integral multiple of 15kHz interval of subcarriers, so that the subcarriers of the anchor carrier and the non-anchor carrier are orthogonal, and mutual interference of the anchor carrier and the non-anchor carrier is avoided.

Based on the first aspect, under some possible embodiments, the method may further include: a terminal receives a Master Information Block (MIB) issued by network equipment on an anchor carrier; the determining, by the terminal, the position of the non-anchor carrier on the frequency band may include: the terminal determines F according to the instruction of the MIB_DL1Here, when the MIB indicates that the center carrier frequency of the non-anchor carrier is higher than the center carrier frequency of the anchor carrier, then F_DL1＝F_DL2+180kHz, F when the MIB indicates that the center carrier frequency of the non-anchor carrier is lower than the center carrier frequency of the anchor carrier_DL1＝F_DL2-180kHz。

In the present application, since the non-anchor carrier and the anchor carrier are disposed adjacently, when the 1 bit in the MIB indicates that the center carrier frequency of the non-anchor carrier is higher than the center carrier frequency of the anchor carrier, the terminal can determine that the non-anchor carrier is the center carrier frequency F_DL1Satisfies F_DL1＝F_DL2+180kHz carrier, and similarly, when 1 bit in the MIB indicates that the center carrier frequency of the non-anchor carrier is lower than the center carrier frequency of the anchor carrier, the terminal can determine that the non-anchor carrier is the center carrier frequency F_DL1Satisfies F_DL1＝F_DL2The carrier frequency of 180kHz, it can be seen that the terminal can determine the accurate position of the non-anchor carrier on the frequency band, and then successfully receive the system information SIB1 on the non-anchor carrier, and perform the subsequent processes of paging, random access, data transceiving, and the like.

In addition, the terminal can determine the accurate position of the non-anchor carrier on the frequency band according to the indication of 1 bit in the MIB, so that extra signaling is not required to be introduced, and extra signaling overhead is avoided.

Based on the first aspect, in some possible embodiments, a terminal performs data transmission on a non-anchor carrier, including: the terminal receives System Information block 1SIB1(System Information Blocks type 1) and/or other System Information (SI) on the non-anchor carrier.

Based on the first aspect, under some possible embodiments, the method may further include: a terminal receives an Evolved universal terrestrial Radio Access Absolute Radio Frequency Channel Number (EARFCN) and an offset Channel Number of the EARFCN, wherein the Evolved universal terrestrial Radio Access Absolute Radio Frequency Channel Number (E-UTRA) is sent by network equipment; the determining, by the terminal, the position of the non-anchor carrier on the frequency band may include: and the terminal determines the position of the non-anchor carrier on the frequency band according to the carrier configuration information.

Here, for a Frequency Division Duplex (FDD) NB-IoT system, since an uplink carrier and a downlink carrier are carriers with different frequencies, the EARFCN sent by the network device to the terminal is a downlink EARFC; and for a Time Division Duplex (TDD) NB-IoT system. The uplink carrier and the downlink carrier may be the same carrier, and then the network device only sends one EARFCN to the terminal, without distinguishing between the uplink EARFCN and the downlink EARFCN.

In the application, the network device issues the EARFCN and the offset channel number of the EARFCN to the terminal through the carrier configuration information, so that the terminal can determine the accurate position of the non-anchor carrier on the frequency band according to the EARFCN and the offset channel number of the EARFCN, and then perform subsequent processes of paging, random access, data transceiving and the like on the non-anchor carrier.

Based on the first aspect, in some possible embodiments, a terminal performs data transmission on a non-anchor carrier, including: the terminal carries out random access, receives paging information or receives downlink data on the non-anchor carrier.

Based on the first aspect, in some possible embodiments, the offset channel number of the EARFCN takes a value of +3.5, -4.5, +7.5, or-8.5.

Based on the first aspect, in some possible embodiments, the non-anchor carrier is in an independent mode.

In a second aspect, the present application provides a data transmission method, which may be applied to an NB-IoT network device, and the network device is capable of communicating with an NB-IoT terminal. The data transmission method comprises the following steps: the network equipment indicates the position of the non-anchor carrier on the frequency band to the terminal, wherein the center carrier frequency F of the non-anchor carrier_DL1Satisfies F_DL1＝F_DL2±n×180kHz，F_DL2Is the center carrier frequency of the anchor carrier, F_DL2Is an integral multiple of 100kHz, n is a positive integer, and the anchor point carrier is in an independent mode; and the network equipment and the terminal perform data transmission on the non-anchor carrier.

In the present application, since F_DL1Satisfies F_DL1＝F_DL2+/- × 180kHz, it can be seen that there is no Gap (Gap) between the non-anchor carrier and the anchor carrier, at this time, the anchor carrier and the non-anchor carrier are deployed next to each other, i.e. the non-anchor carrier is the adjacent carrier of the anchor carrier ("adjacentto carrier relative to the anchor carrier"), so the terminal can obtain the accurate position of the non-anchor carrier on the frequency band according to the indication of the network device, i.e. the carrier deployed adjacent to the anchor carrier, and then the terminal can receive the system information on the adjacently deployed non-carrier, and then the terminal performs the subsequent processes of paging, random access, data transceiving, etc. according to the received system information.

Based on the second aspect, in some possible embodiments, the network device indicates, to the terminal, a location of the non-anchor carrier on the frequency band, including: the network equipment sends MIB for indicating the position of the non-anchor carrier on the frequency band on the anchor carrier, wherein when F_DL1＝F_DL2+180kHz, the MIB indicates that the center carrier frequency of the non-anchor carrier is higher than the center carrier frequency of the anchor carrier, when F is_DL1＝F_DL2At-180 kHz, the MIB indicates that the center carrier frequency of the non-anchor carrier is lower than that of the anchor carrierA center carrier frequency.

Based on the second aspect, in some possible embodiments, the data transmission between the network device and the terminal on the non-anchor carrier includes: the network device sends the SIB1 on the non-anchor carrier.

Based on the second aspect, in some possible embodiments, the network device indicates, to the terminal, a location of the non-anchor carrier on the frequency band, including: the network device sends to the terminal an EARFCN and an offset channel number of the EARFCN to indicate a location of the non-anchor carrier on the frequency band.

Based on the second aspect, in some possible embodiments, the data transmission between the network device and the terminal on the non-anchor carrier includes: and the network equipment carries out paging on the non-anchor carrier, receives the random access information of the terminal or sends downlink data.

Based on the second aspect, in some possible embodiments, the offset channel number of the EARFCN is +3.5, -4.5, +7.5, or-8.5.

Based on the second aspect, in some possible embodiments, the non-anchor carrier is in an independent mode.

In a third aspect, the present application provides a communication device, which may be a data transmission device or a chip or a system on a chip in the data transmission device, and may also be a functional module in the data transmission device for implementing the method according to the first aspect or any possible implementation manner of the first aspect. The communication device may implement the functions performed by the terminal in the above aspects or possible embodiments, which may be implemented by hardware executing corresponding software. The hardware or software comprises one or more modules corresponding to the functions. For example, the communication device may include: a determining module for determining a position of a non-anchor carrier on a frequency band, wherein a center carrier frequency F of the non-anchor carrier_DL1Satisfies the following conditions: f_DL1＝F_DL2±n×180kHz，F_DL2Is the center carrier frequency of the anchor carrier, F_DL2Is an integral multiple of 100kHz, n is a positive integer, and the anchor point carrier is in an independent mode; a transmission module for performing on a non-anchor carrierAnd (5) data transmission.

Based on the third aspect, in some possible embodiments, the apparatus may further include: the receiving module is used for receiving a master information block MIB issued by the network equipment on an anchor carrier; the determining module is further configured to determine F according to the indication of the MIB_DL1Wherein when the MIB indicates that the center carrier frequency of the non-anchor carrier is higher than the center carrier frequency of the anchor carrier, then F_DL1＝F_DL2+180kHz, F when the MIB indicates that the center carrier frequency of the non-anchor carrier is lower than the center carrier frequency of the anchor carrier_DL1＝F_DL2-180kHz。

In some possible embodiments, based on the third aspect, a transmission module is configured to receive the SIB1 on the non-anchor carrier.

Based on the third aspect, in some possible embodiments, the above apparatus further includes: the receiving module is used for receiving the EARFCN and the offset channel number of the EARFCN sent by the network equipment; the determining module is further configured to determine a location of the non-anchor carrier on the frequency band according to the carrier configuration information.

Based on the third aspect, in some possible embodiments, the transmission module is configured to perform random access on a non-anchor carrier, receive a paging message, or receive downlink data.

In accordance with the third aspect, in some possible embodiments, the offset channel number of the EARFCN is +3.5, -4.5, +7.5, or-8.5.

Based on the third aspect, in some possible embodiments, the non-anchor carrier is in an independent mode.

The transmission module mentioned in the third aspect may be a transceiving interface, a transceiving circuit, a transceiver, or the like; the receiving module can be a receiving interface, a receiving circuit or a receiver, etc.; the determining means may be one or more processors.

In a fourth aspect, the present application provides a communication device, which may be a data transmission device or a chip or a system on a chip in a data transmission device, and may also be any possible implementation of the second aspect or the second aspect in a data transmission deviceFunctional module for the method. The communication apparatus may implement the functions performed by the network device in the above aspects or possible embodiments, and the functions may be implemented by executing corresponding software by hardware. The hardware or software comprises one or more modules corresponding to the functions. For example, the communication device may include: an indicating module, configured to indicate a position of a non-anchor carrier on a frequency band to a terminal, where a center carrier frequency F of the non-anchor carrier_DL1Satisfies the following conditions: f_DL1＝F_DL2±n×180kHz，F_DL2Is the center carrier frequency of the anchor carrier, F_DL2Is an integral multiple of 100kHz, n is a positive integer, and the anchor point carrier is in an independent mode; and the transmission module is used for carrying out data transmission on the non-anchor carrier with the terminal.

Based on the fourth aspect, in some possible embodiments, the indication module is configured to send, on the anchor carrier, the MIB for indicating the location of the non-anchor carrier on the frequency band, where F is_DL1＝F_DL2+180kHz, the MIB indicates that the center carrier frequency of the non-anchor carrier is higher than the center carrier frequency of the anchor carrier, when F is_DL1＝F_DL2180kHz, the MIB indicates that the center carrier frequency of the non-anchor carrier is lower than the center carrier frequency of the anchor carrier.

Based on the fourth aspect, in some possible embodiments, a transmission module to transmit SIB1 on a non-anchor carrier.

Based on the fourth aspect, in some possible embodiments, the apparatus further includes means for sending to the terminal an EARFCN and an offset channel of the EARFCN to indicate a location of the non-anchor carrier on the frequency band.

Based on the fourth aspect, in some possible embodiments, the transmission module is configured to perform paging on a non-anchor carrier, receive random access information of the terminal, or send downlink data.

Based on the fourth aspect, in some possible embodiments, the offset channel number of the EARFCN is +3.5, -4.5, +7.5, or-8.5.

Based on the fourth aspect, in some possible embodiments, the non-anchor carrier is in an independent mode.

The transmission module mentioned in the fourth aspect may be a transceiver interface, a transceiver circuit, a transceiver, or the like; the indication submodule may be a transmission interface, a transmission circuit or a transmitter, etc.

In a fifth aspect, the present application provides a communication device, which may be a chip in a terminal or a system on a chip. The communication device may implement the functions performed by the terminal in the above aspects or possible embodiments, and the functions may be implemented by hardware, such as: in one possible implementation, the communication device may include: a processor and a communication interface, the processor being operable to support the communication device to perform the functions referred to in the first aspect or any one of the possible implementations of the first aspect, for example: the processor may communicate data with the network device over the non-anchor carrier via the communication interface. In yet another possible implementation, the communication device may further include a memory for storing computer-executable instructions and data necessary for the communication device. When the communication device is running, the processor executes the computer executable instructions stored by the memory to cause the communication device to perform the data transmission method according to the first aspect or any one of the possible embodiments of the first aspect.

In a sixth aspect, the present application provides a communication apparatus, which may be a chip or a system on chip in a network device. The communication device may implement the functions performed by the terminal in the above aspects or possible embodiments, and the functions may be implemented by hardware, such as: in one possible implementation, the communication device may include: a processor and a communication interface, the processor being operable to support the communication device to perform the functions referred to in the first aspect or any one of the possible implementations of the first aspect, for example: the processor may communicate data with the terminal over the non-anchor carrier via the communication interface. In yet another possible implementation, the communication device may further include a memory for storing computer-executable instructions and data necessary for the communication device. When the communication device is running, the processor executes the computer-executable instructions stored by the memory to cause the communication device to perform the data transmission method according to the second aspect or any one of the possible embodiments of the second aspect.

In a seventh aspect, the present application provides a communication device, including a processor, which is configured to couple with a memory, read and execute instructions in the memory, so as to implement the data transmission method according to the first and second aspects or any possible implementation manner of the first and second aspects.

Based on the seventh aspect, in some possible embodiments, the communication device further includes the memory.

In an eighth aspect, the present application provides a computer-readable storage medium storing instructions for performing the data transmission method of any one of the first and second aspects when the instructions are executed on a computer.

In a ninth aspect, the present application provides a computer program or a computer program product which, when executed on a computer, causes the computer to implement the data transmission method of any one of the first and second aspects described above.

In a tenth aspect, the present application provides a communication system, comprising a terminal and a network device; wherein, the terminal is configured to execute the data transmission method of any one of the first aspect; network equipment for performing the data transmission method of any of the second aspects. Optionally, the communication system may be an NB-IoT system.

It should be understood that the third to tenth aspects of the present application are consistent with the technical solutions of the first and second aspects of the present application, and similar advantageous effects are achieved in each aspect and the corresponding possible implementation manner, and thus detailed descriptions are omitted.

Drawings

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

Fig. 1 is a schematic diagram of NB-IoT carrier independent mode deployment in an embodiment of the present application;

fig. 2 is a schematic diagram of NB-IoT carrier guardband pattern deployment in an embodiment of the present application;

fig. 3 is a schematic diagram of NB-IoT carrier in-band mode deployment in an embodiment of the present application;

fig. 4 is a diagram illustrating relative positions of an anchor carrier and a non-anchor carrier in an embodiment of the present application;

fig. 5 is a first schematic flow chart illustrating an implementation of a data transmission method in an embodiment of the present application;

fig. 6 is a diagram illustrating a relative position of an anchor carrier and a non-anchor carrier in an embodiment of the present application;

fig. 7 is a schematic flow chart illustrating an implementation of a data transmission method in an embodiment of the present application;

fig. 8 is a third schematic flow chart illustrating an implementation of the data transmission method in the embodiment of the present application;

fig. 9 is a first structural diagram of a communication device in an embodiment of the present application;

fig. 10 is a second structural diagram of a communication device in the embodiment of the present application;

fig. 11 is a third structural diagram of a communication device in the embodiment of the present application.

Detailed Description

The embodiments of the present application will be described below with reference to the drawings. In the following description, reference is made to the accompanying drawings which form a part hereof and in which is shown by way of illustration specific aspects of embodiments of the present application or in which specific aspects of embodiments of the present application may be employed. It should be understood that embodiments of the present application may be used in other ways and may include structural or logical changes not depicted in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present application is defined by the appended claims. For example, it should be understood that the disclosure in connection with the described methods may equally apply to the corresponding apparatus or system for performing the methods, and vice versa. For example, if one or more particular method steps are described, the corresponding apparatus may comprise one or more units, such as functional units, to perform the described one or more method steps (e.g., a unit performs one or more steps, or multiple units, each of which performs one or more of the multiple steps), even if such one or more units are not explicitly described or illustrated in the figures. On the other hand, for example, if a particular apparatus is described based on one or more units, such as functional units, the corresponding method may comprise one step to perform the functionality of the one or more units (e.g., one step performs the functionality of the one or more units, or multiple steps, each of which performs the functionality of one or more of the plurality of units), even if such one or more steps are not explicitly described or illustrated in the figures. Further, it is to be understood that features of the various exemplary embodiments and/or aspects described herein may be combined with each other, unless explicitly stated otherwise.

Embodiments of the present application provide a communication system, which may be an NB-IoT system. The communication system may include a terminal and a network device.

The network side device may be a device that is used by an Access network side to support a terminal to Access a wireless communication system, and may be, for example, an evolved NodeB (eNB) in a 4G Access technology communication system, a next generation NodeB (gNB) in a 5G Access technology communication system, a Transmission Reception Point (TRP), a Relay Node (Relay Node), an Access Point (AP), and the like.

The Terminal may be a device providing voice or data connectivity to a User, and may also be referred to as a User Equipment (UE), a mobile STAtion (mobile STAtion), a subscriber unit (subscriber unit), a STAtion (STAtion), or a Terminal (TE). The terminal may be a cellular phone (cellular phone), a Personal Digital Assistant (PDA), a Wireless modem (modem), a hand-held device (hand), a laptop computer (laptop computer), a cordless phone (cordless phone), a Wireless Local Loop (WLL) station, a tablet (pad), or the like. With the development of wireless communication technology, all devices that can access a wireless communication system, can communicate with the network side of the wireless communication system, or communicate with other devices through the wireless communication system may be terminals in the embodiments of the present application, such as terminals and automobiles in intelligent transportation, home devices in smart homes, power meter reading instruments in smart grid, voltage monitoring instruments, environment monitoring instruments, video monitoring instruments in smart security networks, cash registers, and so on. In the embodiment of the application, the terminal can communicate with the network device, and a plurality of terminals can also communicate with each other. The terminals may be stationary or mobile.

The NB-IoT system described above supports operation in three deployment modes, namely, stand alone (stand alone) mode, guard band (guard band) mode, and in-band (in-band) mode.

Specifically, fig. 1 is a schematic diagram of NB-IoT carrier independent mode deployment in an embodiment of the present invention, and referring to fig. 1, when NB-IoT carriers are deployed in an independent mode, NB-IoT data is transmitted using an independent frequency band, for example, using one or more carriers in a Global System for Mobile communications (GSM) network, where a bandwidth of one resource block is 180 kHz. At this time, the NB-IoT frequency band is independent of the LTE frequency band, and the NB-IoT and LTE can be completely decoupled.

Fig. 2 is a schematic diagram of NB-IoT carrier guard band mode deployment in an embodiment of the present application, and referring to fig. 2, when an NB-IoT carrier is deployed in the guard band mode, one or more resource blocks that are not utilized in an LTE carrier guard band in an LTE channel bandwidth are utilized to transmit NB-IoT data, where a bandwidth of one resource block is 180 kHz.

Fig. 3 is a schematic diagram of in-band mode deployment of an NB-IoT carrier in an embodiment of the present application, and referring to fig. 3, when the NB-IoT carrier is deployed in the in-band mode, one or more resource blocks in an LTE carrier are used to transmit NB-IoT, where a bandwidth of one resource block is 180 kHz.

Further, in NB-IoT, carriers may be divided into an anchor carrier (anchor carrier) and a non-anchor carrier (non-anchor carrier), where carriers transmitting a Narrowband Primary Synchronization Signal (NPSS), a Narrowband Secondary Synchronization Signal (NSSS), and a Narrowband Physical Broadcast Channel (NPBCH) are the anchor carriers, and carriers not transmitting the NPSS, NSSS, and NPBCH are the non-anchor carriers.

For NB-IoT carriers (i.e., anchor carrier and all non-anchor carriers), its center carrier frequency F_DL(MHz) must satisfy the following formula (1):

F_DL＝F_{DL_low}+0.1(N_DL-N_Offs-DL)+0.0025(2M_DL+1) (1)

wherein, F_{DL_low}Is the lowest downlink frequency point of the corresponding frequency band, N_DLIs EARFCN, N_offs-DLIs the lowest row frequency point number of the corresponding frequency band, M_DLIs the offset channel number of EARFCN. M_DLThe value range of (a) is { -10, -9, -8, -7, -6, -5, -6, -3, -2, -1, -0.5, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }.

For example, TDD NB-IoT supported Band (Band)41, see table 1 below, in Band 41, F_{DL_low}＝2496，N_Offs-DL＝39650，N_DLThe value range is 39650-41589.

TABLE 1

When anchor carriers are deployed in standalone mode, M_DLThe value is-0.5, and at this time, the central carrier frequency of the anchor carrier is an integer multiple of 100kHz, for example, 2496500kHz, that is, F can be calculated according to the above formula (1)_DL22496500kHz, when the center frequency is offset from the 100kHz channel raster (channel raster) by 0, for convenience of expression, F in equation (1) may be ignored here_{DL_low}+0.1(N_DL-N_Offs-DL) This term is denoted F_DL20 kHz. M corresponding to non-anchor carrier_DLThe value range of (a) is { -10, -9, -8, -7, -6, -5, -6, -3, -2, -1, -0.5, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }.

But instead of the other end of the tubeFig. 4 is a schematic diagram illustrating relative positions of an anchor carrier and a non-anchor carrier in the embodiment of the present application, which is shown in fig. 4, according to the above formula (1) and M of the non-anchor carrier_DLAt least a Gap (Gap) with a bandwidth of 2.5kHz exists between the non-anchor carrier 42 and the anchor carrier 41 calculated by the value, so that the deployment of the non-anchor carrier is limited to a certain extent and is not flexible enough. Also, since resource blocks on the Gap (Gap) cannot be utilized, the spectrum efficiency is low.

In the embodiment of the application, when the network equipment establishes communication with the terminal, the network equipment selects an anchor carrier and transmits NPSS, NSSS and NPBCH on the anchor carrier. The NPBCH carries the MIB, the MIB indicates that the anchor carrier is in an independent mode, and indicates that the SIB1 is sent on the non-anchor carrier.

In practical applications, 1 bit is also used in the MIB to indicate that the center carrier frequency of the non-anchor carrier carrying the SIB1 is higher than the center carrier frequency of the anchor carrier, i.e., the MIB indicates whether the non-anchor carrier is a high frequency adjacent carrier (the high adjacent carrier relative to the anchor carrier) or a low frequency adjacent carrier (the low adjacent carrier relative to the anchor carrier) of the anchor carrier.

Then, according to the above formula (1) and M of the non-anchor carrier_LDCan calculate the central carrier frequency F of a plurality of non-anchor carriers_DL1Each center carrier frequency F_DL1Corresponding to a non-anchor carrier. Then, the terminal cannot determine the accurate position of the non-anchor carrier on the frequency band according to the indication of the MIB, and further cannot receive the SIB1 and other SIs, and further cannot perform subsequent procedures such as paging, random access, data transceiving, and the like.

Further, in order to indicate the accurate position of the non-anchor carrier on the frequency band, 5 bits may also be used to indicate the frequency offset of the non-anchor carrier carrying the SIB1 from the anchor carrier in the MIB, so that the terminal can determine the accurate position of the non-anchor carrier on the frequency band according to the indicated frequency offset, but the signaling overhead is large for NB-IoT.

The embodiment of the present application provides a data transmission method, which can be applied to the NB-IoT system.

With reference to the NB-IoT system, taking downlink data transmission as an example, fig. 5 is a first implementation flow diagram of a data transmission method in the embodiment of the present application, and as shown in fig. 5, the data transmission method may include:

s501: the network equipment indicates the position of the non-anchor carrier on the frequency band to the terminal;

here, first, the network device selects one center carrier frequency to deploy the anchor carrier, and transmits NPSS, NSSS, and NPBCH on the anchor carrier. The NPBCH carries an MIB indicating that the anchor carrier is in an independent mode, and the MIB further indicates that the SIB1 is sent on a non-anchor carrier.

It should be noted that the non-anchor carrier may be in an independent mode, a guard band mode, or an inter-band mode, and the embodiment of the present application is not particularly limited.

Then, the network device selects a position higher than the high-frequency center carrier frequency of the anchor carrier or a position lower than the high-frequency center carrier frequency of the anchor carrier to deploy the non-anchor carrier, and at the moment, the center carrier frequency F of the non-anchor carrier_DL1Satisfies the following conditions: f_DL1＝F_DL2±n×180kHz，F_DL2Is the center carrier frequency of the anchor carrier, F_DL2Is integral multiple of 100kHz, and n is a positive integer.

For example, assume that the network device selects F_DL2Anchor carrier is deployed at 2496500kHz, corresponding to N_DL＝39655，M_DLAt-0.5, the offset from the 100kHz channel grid is then 0. For convenience of expression, F in the formula (1) is omitted_{DL_low}+0.1(N_DL-N_Offs-DL) This term, can be denoted as F_DL20 kHz. The network device selects to deploy the non-anchor carrier at a location above the anchor carrier high frequency center carrier frequency, so that the network device can select F_DL1Specifically, fig. 6 is a schematic diagram of relative positions of an anchor carrier and a non-anchor carrier in the embodiment of the present application, where reference is made to fig. 6, when F is greater than F, the non-anchor carrier is deployed at 2496500kHz + n × 180kHz_DL2＝0kHz，F_DL1180kHz (F in equation (1) is ignored here)_{DL_low}+0.1(N_DL-N_Offs-DL) The term, actually can be F_DL2＝2496500kHz，F_DL12496680kHz), anchor carrier 61 is deployed adjacent to non-anchor carrier 62, and there is no Gap (Gap) between anchor carrier 61 and non-anchor carrier 62, at which point the resource blocks on the band are fully utilized. Moreover, the difference between the central carrier frequency of the anchor carrier and the central carrier frequency of the non-anchor carrier is 180kHz, and 180kHz is an integral multiple of the interval of the sub-carriers of 15kHz, so that the sub-carriers of the anchor carrier and the non-anchor carrier are orthogonal, and interference cannot be generated between the anchor carrier and the non-anchor carrier.

S502: the terminal determines the position of the non-anchor carrier on the frequency band;

here, the terminal first searches for NPSS and NSSS blindly, and after receiving the NPSS and NSSS blindly, the terminal may further receive MIB on the anchor carrier, thereby knowing that the anchor carrier is in the independent mode. Then, the terminal determines the position of the non-anchor carrier on the frequency band according to the instruction issued by the network device through S501.

S503: and the terminal and the network equipment perform data transmission on the non-anchor carrier.

Here, after determining the location of the non-anchor carrier through S502, the terminal may perform data transmission with the network device on the non-anchor carrier, for example, the terminal receives data sent by the network device on the non-anchor carrier and/or sends data to the network device on the non-anchor carrier.

In the embodiment of the application, since F_DL1Satisfies F_DL1＝F_DL2N × 180kHz, it can be seen that more non-anchor carrier locations are added, thereby increasing the flexibility of non-anchor carrier deployment.

Further, due to F_DL1Satisfies F_DL1＝F_DL2N × 180kHz, it can be seen that there is no Gap (Gap) between the non-anchor carrier and the anchor carrier, i.e., the anchor carrier is deployed in close proximity to the non-anchor carrier, which is the anchor carrier's adjacent carrier ("adjacenttransmitter relative to the anchor carrier")Resource blocks on the (Gap) are fully utilized, and the frequency spectrum efficiency is improved.

In addition, the difference between the central carrier frequency of the anchor carrier and the central carrier frequency of the non-anchor carrier is integral multiple of 180kHz, and 180kHz is integral multiple of 15kHz interval of subcarriers, so that the subcarriers of the anchor carrier and the non-anchor carrier are orthogonal, and the interference between the anchor carrier and the non-anchor carrier is avoided.

Fig. 7 is a schematic diagram of an implementation flow of a data transmission method in this embodiment, referring to fig. 7, a network device may indicate a location of a non-anchor carrier on a frequency band through an MIB, and with reference to the embodiment shown in fig. 5, the data transmission method may further include:

s701: the network equipment sends MIB used for indicating the position of the non-anchor carrier on the frequency band on the anchor carrier;

here, the network device selects a center carrier frequency to deploy the anchor carrier, and transmits NPSS, NSSS, and NPBCH on the anchor carrier. The NPBCH carries an MIB indicating that the anchor carrier is in an independent mode, and the MIB further indicates that the SIB1 is sent on a non-anchor carrier.

Further, the network device may also use 1 bit of the MIB to indicate whether the center carrier frequency of the non-anchor carrier is higher or lower than the center carrier frequency of the anchor carrier. If the non-anchor carrier is deployed at a position higher than the high-frequency center carrier frequency of the anchor carrier, the network device may set 1 bit in the MIB to "1" and transmit, and may set 1 bit in the MIB to "0" and transmit, on the contrary. Or, if the non-anchor carrier is deployed at a position higher than the high-frequency center carrier frequency of the anchor carrier, the network device may set the 1 bit in the MIB to "0" and transmit the set bit, and conversely, set the 1 bit in the MIB to "1" and transmit the set bit. Of course, the 1 bit in the MIB may also take other values, and the embodiment of the present application is not particularly limited.

S702: the terminal determines non-anchor points according to the instruction of the MIBCenter carrier frequency F of carrier_DL1；

Here, the terminal first searches for NPSS and NSSS blindly, and after receiving the NPSS and NSSS blindly, the terminal may further receive MIB on the anchor carrier, thereby knowing that the anchor carrier is in the independent mode. And then, the terminal determines the position of the non-anchor carrier on the frequency band according to the instruction of the MIB. Specifically, when 1 bit in the MIB indicates that the center carrier frequency of the non-anchor carrier is higher than the center carrier frequency of the anchor carrier, the terminal may be based on the center carrier frequency F of the anchor carrier_DL2Determining the center carrier frequency F of the non-anchor carrier_DL1，F_DL1＝F_DL2+ n × 180kHz, or when 1 bit in the MIB indicates that the center carrier frequency of the non-anchor carrier is lower than the center carrier frequency of the anchor carrier, the terminal may be based on the center carrier frequency F of the anchor carrier_DL2Determining the center carrier frequency F of the non-anchor carrier_DL1，F_DL1＝F_DL2-n×180kHz。

Further, after the terminal receives the MIB on the anchor carrier, it may indicate 1 bit in the MIB at F_DL1＝F_DL2And selecting non-anchor carriers from the carriers +/-180 kHz. When the MIB indicates that the center carrier frequency of the non-anchor carrier is higher than that of the anchor carrier, the terminal can select F_DL1＝F_DL2+180kHz as a non-anchor carrier; when the MIB indicates that the center carrier frequency of the non-anchor carrier is lower than that of the anchor carrier, the terminal can select F_DL1＝F_DL2180kHz as non-anchor carrier. In this manner, an implementation is achieved that does not introduce additional overhead to indicate the location of non-anchor carriers.

S703: the terminal receives the SIB1 on the non-anchor carrier.

Here, the terminal determines F_DL1A non-anchor carrier can then be determined and the terminal can receive SIB1 on the non-anchor carrier.

In practical application, the terminal may further receive other SIs on the non-anchor carrier, where the other SIs may include related information such as common resource configuration and frequency point (SIB2), and may further include related information such as cell selection and reselection (SIB3), a co-frequency cell list (SIB4), a pilot frequency cell list and related information (SIB5), related resource configuration for common resource paging and random access on the non-anchor carrier (SIB22), and the like. Of course, other SIs may also include other SIBs, and the embodiments of the present application are not particularly limited.

Then, after receiving SIB1 and/or other SI on the non-anchor carrier, the terminal may receive a paging message sent by the network device on the anchor carrier or the non-anchor carrier, or perform random access on the non-anchor carrier, and after the terminal randomly accesses the network device, receive downlink data on the non-anchor carrier.

In the embodiment of the present application, since the non-anchor carrier and the anchor carrier are disposed adjacently, when the 1 bit in the MIB indicates that the center carrier frequency of the non-anchor carrier is higher than the center carrier frequency of the anchor carrier, the terminal can determine that the non-anchor carrier is the center carrier frequency F_DL1Satisfies F_DL1＝F_DL2+180kHz carrier, and similarly, when 1 bit in the MIB indicates that the center carrier frequency of the non-anchor carrier is lower than the center carrier frequency of the anchor carrier, the terminal can determine that the non-anchor carrier is the center carrier frequency F_DL1Satisfies F_DL1＝F_DL2The carrier frequency of 180kHz, it can be seen that the terminal can determine the accurate position of the non-anchor carrier on the frequency band, and then successfully receive the system information SIB1 on the non-anchor carrier, and perform the subsequent processes of paging, random access, data transceiving, and the like.

Fig. 8 is a third implementation flow diagram of a data transmission method in this embodiment, and referring to fig. 8, a network device may indicate a location of a non-anchor carrier on a frequency band through carrier configuration information, and with reference to the embodiments shown in fig. 5 and/or fig. 6, the data transmission method may further include:

s801: the network equipment sends EARFCN and the offset channel number of the EARFCN to the terminal;

among them, EARFCN and EARFCN offset channelNumber, i.e. the above-mentioned N_DLAnd M_DL。

Here, after sending SIB1, the network device sends other SIs, which may include EARFCN and offset channel numbers of EARFCN. Alternatively, the network device may also send the EARFCN and the offset channel number of the EARFCN through Radio Resource Control (RRC) signaling after the random access.

It should be noted that, for the FDD NB-IoT system, since the uplink carrier and the downlink carrier are carriers with different frequencies, the EARFCN sent by the network device to the terminal is the downlink EARFCN; for the TDD NB-IoT system, the uplink carrier and the downlink carrier may be the same carrier, and then the network device only sends one EARFCN to the terminal, without distinguishing between the uplink EARFCN and the downlink EARFCN.

S802: the terminal determines the position of the non-anchor carrier on the frequency band according to the EARFCN and the offset channel number of the EARFCN;

here, when the network device indicates the location of the non-anchor carrier on the frequency band through the EARFCN and the offset channel number of the EARFCN, the terminal may configure N of other SI_DLAnd M_DLSubstituting the formula (1), the central carrier frequency of the non-anchor carrier is calculated, and therefore the position of the non-anchor carrier on the frequency band can be determined.

In some possible embodiments, M is as defined above_DL(i.e., the offset channel number of EARFCN) may take on values of +3.5, -4.5, +7.5, or-8.5.

S803: the terminal and the network equipment carry out paging, random access or downlink data receiving and sending on the non-anchor carrier.

Here, the terminal is offset by EARFCN and EARFCN channel number, N_DLAnd M_DLAfter determining the location of the non-anchor carrier on the frequency band, paging (paging) or Random Access (RA) may be performed with the network device on the determined non-anchor carrier, for example, the network device sends a paging message on the determined non-anchor carrier, the terminal receives the paging message on the non-anchor carrier, or the terminal sends a random access message on the determined non-anchor carrier, and the network device sends a random access message on the non-anchor carrierThe anchor carrier receives the random access message, and the terminal may also receive downlink data sent by the network device on the non-anchor carrier after accessing the network device.

In this embodiment of the present application, for an FDD NB-IoT system, since an uplink carrier and a downlink carrier are carriers with different frequencies, it is determined that the carrier is a downlink non-anchor carrier through the S802 terminal, and in S803, the network device may send downlink data in the downlink non-anchor carrier, where the downlink data may include random access information, downlink user data, and the like; for the TDD NB-IoT system, since the uplink carrier and the downlink carrier are the same carrier, in S803, the terminal may send uplink data, such as random access information, on the non-anchor carrier determined in S802, and the network device may send downlink data, such as paging message, downlink user data, etc., on the non-anchor carrier determined by the terminal in S802 in a time-sharing manner.

In the embodiment of the application, the network device issues the EARFCN and the offset channel number of the EARFCN to the terminal through the carrier configuration information, so that the terminal can determine the accurate position of the non-anchor carrier on the frequency band according to the EARFCN and the offset channel number of the EARFCN, and then perform subsequent processes such as paging, random access, data transceiving and the like on the non-anchor carrier.

Based on the same inventive concept as the method described above, an embodiment of the present application provides a communication device, which may be a data transmission device or a chip or a system on a chip in the data transmission device, and may also be a functional module in the data transmission device for implementing the method according to the first aspect or any possible implementation manner of the first aspect. The communication device may implement the functions performed by the terminal in the above aspects or possible embodiments, which may be implemented by hardware executing corresponding software. The hardware or software comprises one or more modules corresponding to the functions. For example, FIG. 9 shows an embodiment of the present applicationReferring to fig. 8, the communication device 900 may include: a determining module 901 for determining the position of a non-anchor carrier on a frequency band, wherein the center carrier frequency F of the non-anchor carrier_DL1Satisfies the following conditions: f_DL1＝F_DL2±n×180kHz，F_DL2Is the center carrier frequency of the anchor carrier, F_DL2Is an integral multiple of 100kHz, n is a positive integer, and the anchor point carrier is in an independent mode; a transmission module 902 configured to transmit data on a non-anchor carrier.

In some possible implementations, the communication device 900 may further include: the receiving module is used for receiving a master information block MIB issued by the network equipment on an anchor carrier; a determination module for determining F according to the instruction of MIB_DL1Wherein when the MIB indicates that the center carrier frequency of the non-anchor carrier is higher than the center carrier frequency of the anchor carrier, then F_DL1＝F_DL2+180kHz, F when the MIB indicates that the center carrier frequency of the non-anchor carrier is lower than the center carrier frequency of the anchor carrier_DL1＝F_DL2-180kHz。

In some possible embodiments, a transmission module to receive a SIB1 on a non-anchor carrier.

In some possible embodiments, the receiving module is further configured to receive the EARFCN and the offset channel number of the EARFCN sent by the network device; and the determining module is used for determining the position of the non-anchor carrier on the frequency band according to the EARFCN and the offset channel number of the EARFCN.

In some possible embodiments, the transmission module is configured to perform random access on a non-anchor carrier, receive a paging message, or receive downlink data.

In some possible embodiments, the offset channel number of the EARFCN takes on a value of +3.5, -4.5, +7.5, or-8.5.

In some possible embodiments, the non-anchor carrier is in a standalone mode.

It should be further noted that, for the specific implementation processes of the determining module 901 and the transmitting module 902, reference may be made to the detailed description of the embodiments in fig. 6 to fig. 8, and for brevity of the description, no further description is given here.

The transmission module mentioned in the embodiment of the present application may be a transceiver interface, a transceiver circuit, a transceiver, or the like; the receiving module can be a receiving interface, a receiving circuit or a receiver, etc.; the determining means may be one or more processors.

Based on the same inventive concept as the method described above, embodiments of the present application provide a communication device, which may be a data transmission device or a chip or a system on a chip in the data transmission device, and may also be a functional module in the data transmission device for implementing the method according to the second aspect or any possible implementation manner of the second aspect. The communication apparatus may implement the functions performed by the network device in the above aspects or possible embodiments, and the functions may be implemented by executing corresponding software by hardware. The hardware or software comprises one or more modules corresponding to the functions. For example, fig. 10 is a schematic diagram of a second structure of the communication device in the embodiment of the present application, and referring to fig. 9, the communication device 1000 may include: an indicating module 1001 configured to indicate a location of a non-anchor carrier on a frequency band to a terminal, wherein a center carrier frequency F of the non-anchor carrier_DL1Satisfies the following conditions: f_DL1＝F_DL2±n×180kHz，F_DL2Is the center carrier frequency of the anchor carrier, F_DL2Is an integral multiple of 100kHz, n is a positive integer, and the anchor point carrier is in an independent mode; a transmission module 1002, configured to transmit data on a non-anchor carrier.

In some possible embodiments, the apparatus further includes an indication module configured to send the MIB indicating a location of the non-anchor carrier on the frequency band on the anchor carrier, where F is_DL1＝F_DL2+180kHz, the MIB indicates that the center carrier frequency of the non-anchor carrier is higher than the center carrier frequency of the anchor carrier, when F is_DL1＝F_DL2180kHz, the MIB indicates that the center carrier frequency of the non-anchor carrier is lower than the center carrier frequency of the anchor carrier.

In some possible embodiments, a transmission module to transmit the SIB1 on a non-anchor carrier.

In some possible embodiments, the apparatus further includes means for sending, to the terminal, an EARFCN and an offset channel of the EARFCN to indicate a location of the non-anchor carrier on the frequency band.

In some possible embodiments, the transmission module is configured to perform paging on a non-anchor carrier, receive a random access message of a terminal, or send downlink data.

In some possible embodiments, the non-anchor carrier is in a standalone mode.

It should be further noted that, for the specific implementation processes of the indication module 1001 and the transmission module 1002, reference may be made to the detailed descriptions of the embodiments in fig. 6 to fig. 8, and for simplicity of the description, the detailed descriptions are omitted here.

The transmission module mentioned in the embodiment of the present application may be a transceiver interface, a transceiver circuit, a transceiver, or the like; the indication module may be a transmission interface, a transmission circuit or a transmitter, etc.

Based on the same inventive concept as the method, the embodiment of the present application provides a communication device, which may be a chip in a terminal or a system on a chip. The communication device may implement the functions performed by the terminal in the above aspects or possible embodiments, and the functions may be implemented by hardware, such as: in a possible implementation manner, fig. 11 is a schematic diagram of a third structure of a communication device in an embodiment of the present application, and referring to solid lines in fig. 11, the communication device 1100 may include: the processor 1001 and the processor 1101 are configured to be coupled to the memory, and read and execute instructions in the memory to implement the data transmission method according to one or more embodiments described above.

In a possible implementation, referring to the dashed line in fig. 11, the communication device 1100 may further include a communication interface 1102, and the processor 1101 may be configured to support the communication device 1100 to implement the functions involved in any of the foregoing embodiments, for example: processor 1101 may communicate data with network devices over non-anchor carriers via communications interface 1102. In yet another possible implementation, referring to the dashed line in fig. 11, the communication device 1100 may further include a memory 1103, and the memory 1103 is used for storing computer-executable instructions and data necessary for the communication device. When the communication device is running, the processor executes the computer-executable instructions stored in the memory to cause the communication device to perform the steps of any of the terminal-side data transmission methods as in the above embodiments.

Based on the same inventive concept as the method, the embodiment of the present application provides a communication apparatus, which may be a chip in a network device or a system on a chip. The communication device may implement the functions performed by the terminal in the above aspects or possible embodiments, and the functions may be implemented by hardware, such as: in one possible implementation, still shown in solid lines in fig. 11, the communication device 1100 may include: the processor 11011, and the processor 1101 are configured to couple with the memory, read and execute instructions in the memory, so as to implement the data transmission method according to one or more embodiments described above.

The communication device 1100 may further comprise a communication interface 1102, and the processor 1101 may be configured to support the communication device 1100 to implement the functions involved in any of the embodiments, for example: processor 1101 can communicate data with terminals over non-anchor carriers via communication interface 1102. In yet another possible embodiment, shown in dashed lines in fig. 11, the communication device 1100 may further include a memory 1003, such as 1103, for storing computer-executable instructions and data necessary for the communication device. When the communication device runs, the processor executes the computer execution instructions stored in the memory, so that the communication device executes the steps of any one of the network equipment side data transmission methods described above.

Based on the same inventive concept as the method described above, an embodiment of the present application provides a computer-readable storage medium storing instructions for executing the data transmission method in any one of the above embodiments when the instructions are executed on a computer.

Based on the same inventive concept as the above method, the embodiments of the present application provide a computer program or a computer program product, which, when executed on a computer, causes the computer to implement the data transmission method in any of the above embodiments.

Those of skill in the art will appreciate that the functions described in connection with the various illustrative logical blocks, modules, and algorithm steps described in the disclosure herein may be implemented as hardware, software, firmware, or any combination thereof. If implemented in software, the functions described in the various illustrative logical blocks, modules, and steps may be stored on or transmitted over as one or more instructions or code on a computer-readable medium and executed by a hardware-based processing unit. The computer-readable medium may include a computer-readable storage medium, which corresponds to a tangible medium, such as a data storage medium, or any communication medium including a medium that facilitates transfer of a computer program from one place to another (e.g., according to a communication protocol). In this manner, a computer-readable medium may generally correspond to (1) a non-transitory tangible computer-readable storage medium, or (2) a communication medium, such as a signal or carrier wave. A data storage medium may be any available medium that can be accessed by one or more computers or one or more processors to retrieve instructions, code and/or data structures for implementing the techniques described herein. The computer program product may include a computer-readable medium.

By way of example, and not limitation, such computer-readable storage media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, flash memory, or any other medium that can be used to store desired program code in the form of instructions or data structures and that can be accessed by a computer. Also, any connection is properly termed a computer-readable medium. For example, if the instructions are transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. It should be understood, however, that the computer-readable storage media and data storage media do not include connections, carrier waves, signals, or other transitory media, but are instead directed to non-transitory tangible storage media. Disk and disc, as used herein, includes Compact Disc (CD), laser disc, optical disc, Digital Versatile Disc (DVD), and blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

The instructions may be executed by one or more processors, such as one or more Digital Signal Processors (DSPs), general purpose microprocessors, Application Specific Integrated Circuits (ASICs), field programmable logic arrays (FPGAs), or other equivalent integrated or discrete logic circuitry. Thus, the term "processor," as used herein may refer to any of the foregoing structure or any other structure suitable for implementation of the techniques described herein. Additionally, in some aspects, the functions described by the various illustrative logical blocks, modules, and steps described herein may be provided within dedicated hardware and/or software modules configured for encoding and decoding, or incorporated in a combined codec. Also, the techniques may be fully implemented in one or more circuits or logic elements.

The techniques of this application may be implemented in a wide variety of devices or apparatuses, including a wireless handset, an Integrated Circuit (IC), or a set of ICs (e.g., a chipset). Various components, modules, or units are described in this application to emphasize functional aspects of means for performing the disclosed techniques, but do not necessarily require realization by different hardware units. Indeed, as described above, the various units may be combined in a codec hardware unit, in conjunction with suitable software and/or firmware, or provided by an interoperating hardware unit (including one or more processors as described above).

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above description is only an exemplary embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application are intended to 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

1. A method of data transmission, comprising:

a terminal determines the position of a non-anchor carrier on a frequency band, wherein the center carrier frequency F of the non-anchor carrier_DL1Satisfies the following conditions:

F_DL1＝F_DL2±n×180kHz；

wherein, F_DL2Is the center carrier frequency of the anchor carrier, F_DL2Is an integral multiple of 100kHz, n is a positive integer, and the anchor point carrier is in an independent mode;

and the terminal transmits data on the non-anchor carrier.

2. The method of claim 1, further comprising: the terminal receives a master information block MIB sent by network equipment on the anchor carrier;

the terminal determines the position of the non-anchor carrier on the frequency band, and comprises the following steps: the terminal determines the F according to the MIB_DL1Wherein F is the carrier frequency of the non-anchor carrier when the MIB indicates that the carrier frequency is higher than the carrier frequency of the anchor carrier_DL1＝F_DL2+180kHz, F when the MIB indicates that the center carrier frequency of the non-anchor carrier is lower than the center carrier frequency of the anchor carrier_DL1＝F_DL2-180kHz。

3. The method according to claim 1 or 2, wherein the terminal performs data transmission on the non-anchor carrier, and comprises:

the terminal receives system information block 1SIB1 on the non-anchor carrier.

4. The method of claim 1, further comprising:

the terminal receives an evolved universal terrestrial radio access absolute radio frequency channel number EARFCN and an offset channel number of the EARFCN sent by network equipment;

the terminal determines the position of the non-anchor carrier on the frequency band, and comprises the following steps: and the terminal determines the position of the non-anchor carrier on a frequency band according to the EARFCN and the offset channel number of the EARFCN.

5. The method according to claim 1 or 4, wherein the terminal performs data transmission on the non-anchor carrier, and comprises:

and the terminal performs random access, receives paging information or receives downlink data on the non-anchor carrier.

6. A method of data transmission, comprising:

network equipment indicates the position of a non-anchor carrier on a frequency band to a terminal, wherein the center carrier frequency F of the non-anchor carrier_DL1Satisfies the following conditions: f_DL1＝F_DL2N × 180kHz, wherein F_DL2Is the center carrier frequency of the anchor carrier, F_DL2Is an integral multiple of 100kHz, n is a positive integer, and the anchor point carrier is in an independent mode;

and the network equipment transmits data on the non-anchor carrier.

7. The method of claim 6, wherein the network device indicates to the terminal a location of the non-anchor carrier on the frequency band, comprising:

the network equipment transmits a master information block MIB on the anchor carrier for indicating the position of the non-anchor carrier on the frequency band, wherein when F_DL1＝F_DL2+180kHz, said MIB indicates that the center carrier frequency of said non-anchor carrier is higher than the center carrier frequency of said anchor carrier, when F_DL1＝F_DL2-180And at kHz, the MIB indicates that the central carrier frequency of the non-anchor carrier is lower than that of the anchor carrier.

8. The method of claim 6 or 7, wherein the network device performs data transmission on the non-anchor carrier, comprising;

the network device sends system information block 1SIB1 on the non-anchor carrier.

9. The method of claim 6, wherein the network device indicates to the terminal a location of the non-anchor carrier on the frequency band, comprising:

the network equipment sends evolved universal terrestrial radio access absolute radio frequency channel numbers EARFCN and offset channel numbers EARFCN for indicating the position of the non-anchor carrier on the frequency band to a terminal.

10. The method of claim 6 or 9, wherein the network device performs data transmission on the non-anchor carrier, comprising:

and the network equipment carries out paging on the non-anchor carrier, receives the random access information of the terminal or sends downlink data.

11. The method of claim 4, 5, 9 or 10, wherein the EARFCN offset channel number has a value of +3.5, -4.5, +7.5 or-8.5.

12. The method according to any of claims 1 to 11, wherein the non-anchor carrier is in standalone mode.

13. A communications apparatus, comprising:

a determination module for determining the position of a non-anchor carrier on a frequency band, the center carrier frequency F of the non-anchor carrier_DL1Satisfies the following conditions: f_DL1＝F_DL2N × 180kHz, whichIn (F)_DL2Is the center carrier frequency of the anchor carrier, F_DL2Is an integral multiple of 100kHz, n is a positive integer, and the anchor point carrier is in an independent mode;

and the transmission module is used for transmitting data on the non-anchor carrier.

14. The apparatus of claim 13, wherein a master information block MIB transmitted by a network device is received on the anchor carrier; the determining module is used for determining the F according to the instruction of the MIB_DL1Wherein when the MIB indicates that the center carrier frequency of the non-anchor carrier is higher than the center carrier frequency of the anchor carrier, then F_DL1＝F_DL2+180kHz, F when the MIB indicates that the center carrier frequency of the non-anchor carrier is lower than the center carrier frequency of the anchor carrier_DL1＝F_DL2-180kHz。

15. The apparatus of claim 13 or 14, wherein the transmission module is configured to receive a system information block 1SIB1 on the non-anchor carrier.

16. The apparatus of claim 13, further comprising: a receiving module, configured to receive evolved universal terrestrial radio access absolute radio frequency channel numbers EARFCN and offset channel numbers of EARFCN sent by the network device;

the determining module is further configured to determine a location of the non-anchor carrier on a frequency band according to the EARFCN and the offset channel number of the EARFCN.

17. The apparatus of claim 13 or 16, wherein the transmission module is configured to perform random access, receive a paging message, or receive downlink data on the non-anchor carrier.

18. A communications apparatus, comprising:

an indication module for indicating the direction of the display screen,for indicating to a terminal the position on a frequency band of a non-anchor carrier whose center carrier frequency F_DL1Satisfies the following conditions: f_DL1＝F_DL2N × 180kHz, wherein F_DL2Is the center carrier frequency of the anchor carrier, F_DL2Is an integral multiple of 100kHz, n is a positive integer, and the anchor point carrier is in an independent mode;

19. The apparatus of claim 18, wherein the means for indicating sends a master information block MIB on the anchor carrier to indicate the location of the non-anchor carrier on a frequency band, wherein when F is_DL1＝F_DL2+180kHz, said MIB indicates that the center carrier frequency of said non-anchor carrier is higher than the center carrier frequency of said anchor carrier, when F_DL1＝F_DL2-180kHz, then the MIB indicates that the center carrier frequency of the non-anchor carrier is lower than the center carrier frequency of the anchor carrier.

20. The apparatus of claim 18 or 19, wherein the transmission module is configured to send a system information block 1SIB1 on the non-anchor carrier.

21. The apparatus of claim 18, wherein the means for sending the offset channel to the terminal is configured to send evolved universal terrestrial radio access absolute radio frequency channel numbers EARFCN and EARFCN indicating the location of the non-anchor carrier on a frequency band.

22. The apparatus of claim 18 or 21, wherein the transmission module is configured to page on the non-anchor carrier, receive random access information of the terminal, or send downlink data.

23. The apparatus of claim 16, 17, 21 or 22, wherein the EARFCN offset channel number has a value of +3.5, -4.5, +7.5 or-8.5.

24. The apparatus of any of claims 13-23, wherein the non-anchor carrier is in standalone mode.

25. A communication apparatus, comprising a processor coupled to a memory, configured to read and execute instructions in the memory to implement the data transmission method according to any one of claims 1 to 12.

26. The communications apparatus of claim 25, further comprising the memory.

27. A computer-readable storage medium comprising instructions that, when executed, cause a data transfer method as claimed in any one of claims 1 to 12 to be performed.