CN107889197B

CN107889197B - Communication method and device

Info

Publication number: CN107889197B
Application number: CN201610870466.6A
Authority: CN
Inventors: 尤肖虎; 汪茂; 张菁菁; 张军; 刘亚林
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-09-29
Filing date: 2016-09-29
Publication date: 2020-10-09
Anticipated expiration: 2036-09-29
Also published as: CN107889197A

Abstract

The invention provides a communication method and equipment, wherein the communication method comprises the following steps: the method comprises the steps that a first device receives a control frame sent by a second device, wherein the control frame carries a synchronous signal, a broadcast signal and a paging signal, a subframe carrying the broadcast signal in the control frame and a subframe carrying the paging signal are the same subframe, the subframe carrying the synchronous signal and the subframe carrying the broadcast signal are adjacent subframes, the subframe carrying the synchronous signal is positioned in front of the subframe carrying the broadcast signal, the paging signal is used for indicating whether the first device is paged, and the broadcast signal comprises a system frame number; when the paging signal indicates that the first device is not paged, the first device enters a sleep state; when the paging signal indicates that the first device is paged, the first device receives a data frame sent by the second device, and demodulates the data signal carried in the data frame by using a scrambling code generated according to the system frame number. The invention can effectively reduce the energy consumption of the equipment and prolong the service life of the equipment.

Description

Communication method and device

Technical Field

The present invention relates to the field of communications, and more particularly, to a communication method and apparatus.

Background

The fourth part of the action plan of the state department internet + specifically mentions internet + smart grid, also called smart grid. The basic functions of the smart grid are power distribution automation, power utilization data acquisition automation, monitoring of key nodes of the power grid, and prevention of accidents (such as major power failure) through data real-time feedback. With the development of new energy power generation technology, the power grid will subvert the former power supply pattern of only power plants, each household can generate power, and the power can be transmitted to each other according to the needs to realize the flexible distribution and transfer of the power. The novel transmission structure is more dependent on sufficient information interaction among nodes of the power grid. Because the smart grid depends on sufficient power system information interaction among nodes of the grid, the power system information interaction becomes a key technology of the smart grid.

If the information of the electric power system is exchanged by an operator agent, namely, the electric power communication is realized by utilizing a public network, the economic cost is high in the long term, and hidden dangers can be buried in the electric power system safely. Therefore, the establishment of the private power network is imperative. The national electrical prisoner No. 34 command plain text stipulates that the remote control operation of electrical equipment, namely remote signaling, remote measurement and remote control operation, must be carried out through a power private network, and can not use a public network, so as to avoid information leakage and safety accidents. The special power network established by the optical fiber communication technology has high cost and even can not be constructed. Mature wireless communication systems as a flexible deployment scheme become an important means for establishing a private power network. The establishment of the power private network based on the wireless communication system refers to the establishment of a base station by a power enterprise, and a wireless network exclusive to the power enterprise is created. The private power network established based on the wireless communication system is called a wireless power network or a wireless power communication system.

Some power devices do not have a directly available power source and use batteries to maintain operation. In an electric power system, there is a high demand on the service life of electric power equipment. And the power consumption of the device is a key factor affecting the battery life.

The current power wireless communication system is a TD-LTE230 power communication system developed by China Putian in combination with the Nanrui group and Jiangsu Power saving company, and the power communication system refers to a traditional wireless communication mechanism to realize power information transmission. However, under the conventional wireless communication mechanism, the device is in the non-sleep state for a long time, which results in large energy consumption, and thus the service life of the battery is reduced for the power device which uses the battery to maintain operation.

Disclosure of Invention

The invention provides a communication method and equipment, which can effectively reduce the energy consumption of the equipment, thereby prolonging the service life of the equipment.

In a first aspect, a communication method is provided, where the communication method includes: a first device receives a control frame sent by a second device, wherein the control frame carries a synchronization signal, a broadcast signal and a paging signal, a subframe carrying the broadcast signal and a subframe carrying the paging signal in the control frame are the same subframe, the subframe carrying the synchronization signal and the subframe carrying the broadcast signal are adjacent subframes, the subframe carrying the synchronization signal is positioned before the subframe carrying the broadcast signal, the paging signal is used for indicating whether the first device is paged, and the broadcast signal comprises a system frame number; when the paging signal indicates that the first device is not paged, the first device enters a sleep state; and when the paging signal indicates that the first equipment is paged, the first equipment receives a data frame sent by the second equipment, and demodulates the data signal carried in the data frame by using a scrambling code generated according to the system frame number.

In the scheme, the synchronization signal, the broadcast signal and the paging signal are intensively placed in the control frame for transmission, and the control signals (namely the synchronization signal, the broadcast signal and the paging signal) required by the device to wake up from the sleep state are centralized in one frame, so that the waking time of the device can be reduced, the energy consumption of the device is reduced, and the service life of the device is prolonged.

In addition, in the scheme, the control signal (namely, the synchronous signal, the broadcast signal and the paging signal) and the data signal are transmitted separately through the control frame and the data frame, so that the receiving complexity of the receiving end equipment can be simplified.

With reference to the first aspect, in a possible implementation manner of the first aspect, the spectrum transmission resource of the control frame and the data frame is 40 power dedicated frequency points authorized to the power wireless communication system in a 230MHz frequency band spectrum; the first device receives a control frame sent by a second device, and the method comprises the following steps: the first equipment receives the control frames from the 40 power special frequency points; the first device receiving the data frame sent by the second device, including: and the first equipment receives the data frame sent by the second equipment on the 40 power special frequency points.

The application scenario of the scheme is that in the power wireless communication system, control signals (namely, synchronization signals, broadcast signals and paging signals) required by the device to wake up from a sleep state are concentrated in a control frame and transmitted separately from data signals, so that the wake-up time of the power device can be reduced, the energy consumption of the power device can be reduced, and particularly for the power device which uses a battery to maintain work, the service life of the battery can be prolonged, and the service life of the power device can be prolonged.

With reference to the first aspect or the certain implementation manner of the first aspect, in a possible implementation manner of the first aspect, the data frame includes 1 first-type subframe, M second-type subframes, and N third-type subframes, the first-type subframe is located between the second-type subframe and the third-type subframe, the first-type subframe includes a guard interval GP, the second-type subframe is used for transmitting uplink data, the third-type subframe is used for transmitting downlink data, and M and N are both positive integers.

In this scheme, the subframe structure of the data frame is designed as follows: the method comprises the following steps of 1 first-class subframe, M second-class subframes and N third-class subframes, wherein the first-class subframes comprise guard intervals GP, and the GP is used for switching between uplink and downlink. The first type of subframe may be referred to as a special subframe, and specifically, may be configured according to an actual transmission load condition.

With reference to the first aspect or the certain implementation manner of the first aspect, in a possible implementation manner of the first aspect, the first class of subframes carries a downlink cell-specific reference signal and an uplink channel sounding reference signal; or the physical random access channel signal is loaded on the first type subframe; or the first type of subframe bears uplink data; or the first type of subframe carries downlink data.

When the first type of subframe carries a Downlink cell specific reference signal (Downlink CRS) and an Uplink channel sounding reference signal (Uplink SRS), the first type of subframe is used for Uplink and Downlink calibration and high-precision timing. And when the first type of subframe bears a physical random access channel signal (PRACH), the first type of subframe is used for uplink access. And when the first type of subframe bears uplink data, the first type of subframe is used for transmitting the uplink data. And when the first type of subframe bears downlink data, the first type of subframe is used for transmitting the downlink data.

With reference to the first aspect or the certain implementation manner of the first aspect, in a possible implementation manner of the first aspect, M and N are both 7; or M is 11 and N is 3; or both M and N are 2.

With reference to the first aspect or the certain implementation manner of the first aspect, in a possible implementation manner of the first aspect, the transmission resource of the control frame and the data frame includes a plurality of resource blocks RB, a bandwidth of the RB in a frequency domain is 25KHz, and a duration in a time domain is 8 ms.

With reference to the first aspect or the certain implementation manner of the first aspect, in a possible implementation manner of the first aspect, the RB includes 16 subcarriers in a frequency domain, the RB includes 2 slots in a time domain, and each slot includes 5 orthogonal frequency division multiplexing OFDM symbols.

In this implementation, the CP value is 120 um.

With reference to the first aspect or the certain implementation manner of the first aspect, in a possible implementation manner of the first aspect, the RB includes 8 subcarriers in a frequency domain, the RB includes 2 slots in a time domain, and each slot includes 11 OFDM symbols.

With reference to the first aspect or the certain implementation manner of the first aspect, in a possible implementation manner of the first aspect, a CP of the 1 st OFDM symbol of each slot is greater than a preset threshold, where the preset threshold enables frequency hopping transceiving of a narrowband device.

In the scheme, the frequency diversity of the narrowband equipment is increased by increasing the CP of the 1 st OFDM symbol of each time slot of the frame, so that the transceiving performance of the narrowband equipment can be improved.

With reference to the first aspect or the certain implementation manner of the first aspect, in a possible implementation manner of the first aspect, a transmission time interval TTI of the control frame and/or the data frame is one subframe duration; or TTI is a time slot duration; or TTI is one OFDM symbol duration.

In a second aspect, a communication method is provided, the communication method including: the second device determines a control frame, wherein the control frame carries a synchronization signal, a broadcast signal and a paging signal, a subframe carrying the broadcast signal and a subframe carrying the paging signal in the control frame are the same subframe, the subframe carrying the synchronization signal and the subframe carrying the broadcast signal are adjacent subframes, the subframe carrying the synchronization signal is positioned before the subframe carrying the broadcast signal, the paging signal is used for indicating whether the first device is paged, and the broadcast signal comprises a system frame number; the second device sends the control frame to the first device, so that the first device knows whether to be paged or not, and demodulates the received data signal by using a scrambling code generated according to the system frame number under the condition of being paged; after sending the control signal, the second device sends a data frame to the first device, wherein the data frame carries a data signal.

With reference to the second aspect, in a possible implementation manner of the second aspect, the spectrum transmission resources of the control frame and the data frame are 40 power dedicated frequency points authorized to the power wireless communication system in a 230MHz frequency band spectrum; the second device sending the control frame to the first device, including: the second equipment sends the control frame to the first equipment on the 40 power special frequency points; the second device transmitting a data frame to the first device, including: and the second equipment sends the data frame to the first equipment on the 40 power special frequency points.

With reference to the second aspect or the certain implementation manner of the second aspect, in a possible implementation manner of the second aspect, the data frame includes 1 first-type subframe, M second-type subframes, and N third-type subframes, the first-type subframe is located between the second-type subframe and the third-type subframe, the first-type subframe includes a guard interval GP, the second-type subframe is used for transmitting uplink data, the third-type subframe is used for transmitting downlink data, and M and N are both positive integers.

With reference to the second aspect or the certain implementation manner of the second aspect, in a possible implementation manner of the second aspect, the first-class subframe carries a downlink cell-specific reference signal and an uplink channel sounding reference signal; or the physical random access channel signal is loaded on the first type subframe; or the first type of subframe bears uplink data; or the first type of subframe carries downlink data.

With reference to the second aspect or the certain implementation manner of the second aspect, in a possible implementation manner of the second aspect, M and N are both 7; or M is 11 and N is 3; or both M and N are 2.

With reference to the second aspect or the certain implementation manner of the second aspect, in a possible implementation manner of the second aspect, the transmission resource of the control frame and the data frame includes a plurality of resource blocks RB, a bandwidth of the RB in a frequency domain is 25KHz, and a duration in a time domain is 8 ms.

With reference to the second aspect or the certain implementation manner of the second aspect, in a possible implementation manner of the second aspect, the RB includes 16 subcarriers in a frequency domain, the RB includes 2 slots in a time domain, and each slot includes 5 orthogonal frequency division multiplexing OFDM symbols.

In this implementation, the CP value is 120 um.

With reference to the second aspect or the certain implementation manner of the second aspect, in a possible implementation manner of the second aspect, the RB includes 8 subcarriers in a frequency domain, the RB includes 2 slots in a time domain, and each slot includes 11 OFDM symbols.

With reference to the second aspect or the certain implementation manner of the second aspect, in a possible implementation manner of the second aspect, the CP of the 1 st OFDM symbol of each timeslot is greater than a preset threshold, where the preset threshold enables frequency hopping transceiving of a narrowband device.

With reference to the second aspect or the certain implementation manner of the second aspect, in a possible implementation manner of the second aspect, a transmission time interval TTI of the control frame and/or the data frame is one subframe duration; or TTI is a time slot duration; or TTI is one OFDM symbol duration.

A third aspect provides a communication device configured to perform the method of the first aspect or any one of its possible implementations.

In particular, the communication device may comprise means for performing the method of the first aspect or any of its possible implementations.

A fourth aspect provides a communication device for performing the method of the second aspect or any one of its possible implementations.

In particular, the communication device may comprise means for performing the method of the second aspect or any of its possible implementations.

A fifth aspect provides a communication device comprising a memory for storing instructions and a processor for executing the instructions stored by the memory, and execution of the instructions stored in the memory causes the processor to perform the first aspect or the method of any of the possible implementations of the first aspect.

A sixth aspect provides a communication device comprising a memory for storing instructions and a processor for executing the instructions stored by the memory, and execution of the instructions stored in the memory causes the processor to perform the method of the second aspect or any possible implementation of the second aspect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 shows a schematic flow diagram of a communication method of an embodiment of the invention.

Fig. 2 is a diagram illustrating a control frame and a data frame according to an embodiment of the invention.

Fig. 3 shows a schematic diagram of spectrum transmission resources according to an embodiment of the invention.

Fig. 4 shows a schematic diagram of a data frame of an embodiment of the invention.

Fig. 5 is a schematic diagram illustrating a first type of subframe in a data frame according to an embodiment of the present invention.

Fig. 6 shows a schematic diagram of a resource block of an embodiment of the present invention.

Fig. 7 shows another schematic diagram of a data frame according to an embodiment of the invention.

Fig. 8 shows another schematic diagram of a resource block of an embodiment of the invention.

Fig. 9 is a further diagram of a data frame according to an embodiment of the invention.

Fig. 10 shows another schematic flow chart of a communication method of an embodiment of the invention.

Fig. 11 shows a schematic block diagram of a communication device provided according to an embodiment of the present invention.

Fig. 12 shows another schematic block diagram of a communication device provided according to an embodiment of the present invention.

Fig. 13 shows yet another schematic block diagram of a communication device provided in accordance with an embodiment of the present invention.

Fig. 14 shows yet another schematic block diagram of a communication device provided in accordance with an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Mature wireless communication systems as a flexible deployment scheme become an important means for establishing a private power network. The establishment of the power private network based on the wireless communication system refers to the establishment of a base station by a power enterprise, and a wireless network exclusive to the power enterprise is created. The private power network established based on the wireless communication system is called a wireless power network or a wireless power communication system.

Since some electrical devices do not have a directly available power source, operation is maintained using batteries. If the traditional wireless communication mechanism is adopted, the power equipment has larger energy consumption overhead, the service life of a battery is reduced, and the service life of the power equipment is also reduced. In the power system, it is desirable that the service life of the power equipment be longer.

In view of the above technical problems, the present invention provides a communication method and device, which can effectively reduce the energy consumption of the device, so as to prolong the service life of the power device, especially for the power device using a battery to maintain operation.

It should be noted that the first device in the embodiment of the present invention is, for example, a terminal device, and the second device is, for example, a base station.

Fig. 1 shows a schematic flow chart of a communication method 100 provided by an embodiment of the present invention.

110, a first device receives a control frame sent by a second device, the control frame carries a synchronization signal, a broadcast signal and a paging signal, a subframe carrying the broadcast signal in the control frame and a subframe carrying the paging signal are the same subframe, the subframe carrying the synchronization signal and the subframe carrying the broadcast signal are adjacent subframes, and the subframe carrying the synchronization signal is located before the subframe carrying the broadcast signal, the paging signal is used for indicating whether the first device is paged, and the broadcast signal includes a system frame number.

It should be noted that the control frame carries the synchronization signal, the broadcast signal and the paging signal, wherein the "carrying" may be the meaning of "including".

Specifically, as shown in fig. 2, the control frame includes 5 subframes, the synchronization signal occupies 1 st and 2 nd subframes of the control frame, and the broadcast signal and the paging signal occupy 3 rd, 4 th and 5 th subframes of the control frame.

It should be noted that the transmission resources of the broadcast signal and the paging signal are simultaneously different in frequency, in other words, the broadcast signal and the paging signal are carried on the same subframe (for example,

subframes

3, 4, and 5 shown in fig. 2), but occupy different frequency points in the frequency domain.

In fig. 2, the synchronization signal occupies the first several subframes of the control frame, and the broadcast signal and the paging signal occupy all the remaining subframes of the control frame. It should be understood that fig. 2 is only an example and is not limited, and alternatively, in the embodiment of the present invention, the synchronization signal occupies the first few subframes of the control frame, as long as it is ensured that the subframe occupied by the broadcast signal and the paging signal and the subframe occupied by the synchronization signal are adjacent subframes, and the broadcast signal and the paging signal may occupy partial subframes in the remaining subframes of the control frame, which is not limited by the embodiment of the present invention.

Specifically, the second device may transmit a control frame in a broadcast manner, where the control frame includes a Synchronization Signal, a broadcast Signal, and a paging Signal, where the Synchronization Signal includes a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), and a subframe carrying the PSS and a subframe carrying the SSS are adjacent to each other.

It should be appreciated that the first device, upon waking from sleep, carries the paging signal in the system message (i.e., the control frame) that is first received. In the prior art, the system message received by the device for the first time after waking up from the sleep state includes the synchronization signal, but does not include the paging signal, and the device needs to wait for a period of time before receiving the paging signal.

And 120, the first device judges whether to be paged according to the paging signal carried in the control frame, if so, the flow goes to 130, and if not, the flow goes to 140.

Specifically, whether the first device is paged is determined by judging whether the paging signal carries an identifier matched with the first device. For example, if the first device determines that the paging signal carries an identifier indicating the first device, for example, the device identifier of the first device, it determines that the first device is paged. The first device is considered not paged if there is no identity in the paging signal that matches the first device.

It should be understood that, existing relevant means may also be adopted to determine whether the first device is paged according to the paging signal included in the control frame, which is not limited in the embodiment of the present invention.

And 130, the first device keeps an active state (namely a non-sleep state), receives the data frame sent by the second device, and demodulates the data signal carried in the data frame by using the scrambling code generated according to the system frame number.

140, the first device enters a sleep state.

In the embodiment of the invention, the synchronous signal, the broadcast signal and the paging signal are transmitted in a frame in a centralized way. Specifically, as shown in fig. 2, in one transmission Period (Period), the second device first transmits a control frame, which wraps a synchronization signal, a broadcast signal, and a paging signal in one frame; the data frame is transmitted after the control frame is transmitted.

It should be noted that the control frame in the embodiment of the present invention refers to a frame for carrying other system signals such as a synchronization signal, a broadcast signal, and a paging signal; the data frame according to the embodiment of the present invention refers to a frame for carrying a data signal or data information (data).

The control frame may be referred to as a Special radio frame (Special radio frame), and the data frame may be referred to as a normal frame.

In the embodiment of the invention, a synchronous signal, a broadcast signal and a paging signal are intensively put in a control frame for transmission, and if a device receiving the control frame determines that the device is paged, the device keeps receiving a data frame in a non-sleep state; the device may enter a sleep state if it is determined that it is not being paged. In the prior art, the synchronization signal, the broadcast signal and the paging signal are not necessarily transmitted in one frame, and after the device wakes up from the sleep state and receives the synchronization signal, the device needs to continue to maintain the active state (i.e. the non-sleep state) until the device receives the paging signal, determines whether the device is paged, and then determines whether the device enters the sleep state. Therefore, compared with the prior art, the embodiment of the invention concentrates the control signals (namely the synchronization signal, the broadcast signal and the paging signal) required by the device to wake up from the sleep state into one frame, thereby reducing the time for the device to wake up, reducing the energy consumption of the device and prolonging the service life of the device.

In addition, in the embodiment of the present invention, the control signal (i.e., the synchronization signal, the broadcast signal, and the paging signal) is transmitted separately from the data signal by the control frame and the data frame, so that the receiving complexity of the receiving end device can be simplified.

Optionally, as an embodiment, in the communication method 100 shown in fig. 1, the spectrum transmission resources of the control frame and the data frame are 40 power-dedicated frequency points authorized to the power wireless communication system in a 230MHz frequency band spectrum; in step 100, the first device receives the control frame from the 40 power-specific frequency points; in step 130, the first device receives the data frame sent by the second device from the 40 power-specific frequency points.

Specifically, as shown in fig. 3, the spectrum range of the 230MHz frequency band is 223.025-235MHz (11.975MHz), and the spectrum is allocated with a bandwidth of 25kHz as a frequency point, for a total of 480 frequency points. The initial frequency point of the 480 frequency points is 223.025MHz, the termination frequency point is 235MHz, and the bandwidth of 12MHz (235MHz-223.025MHz +25 kHz-12 MHz) is occupied. 40 frequency points in 480 frequency points of a 230MHz frequency band spectrum are divided into power system special frequency points, and the 40 power special frequency points (1 MHz in total) are dispersed in the 480 frequency points.

Specifically, the 40 power authorization frequency points are shown in tables 1 and 2.

TABLE 1

Table 2.

The application scenario of the embodiment of the invention is the power wireless communication system, and the control signals (namely the synchronization signal, the broadcast signal and the paging signal) required by the device to wake up from the sleep state are concentrated in the control frame and transmitted separately from the data signal, so that the wake-up time of the power device can be reduced, the energy consumption of the power device can be reduced, and particularly for the power device which uses a battery to maintain work, the service life of the battery can be prolonged, and the service life of the power device can be prolonged.

Optionally, in the embodiment of the present invention, a non-power Frequency point in the 230MHz Frequency band is used as a virtual subcarrier in the spectrum transmission resources of the control frame and the data frame, so as to maintain an Orthogonal Frequency Division Multiplexing (OFDM) structure for the spectrum transmission resources of the control frame and the data frame.

Specifically, as shown in fig. 3, the distance between the start frequency point and the end frequency point of the power-specific frequency band in the 230MHz frequency band spectrum is 8.150MHz (8.125MHz +25kHz is 8.150 MHz). Each RB is divided into 16 subcarriers (subcarriers) by using one frequency point of 25kHz as the bandwidth of a Resource Block (RB), and 8.150MHz corresponds to 16 × carrier (8.150MHz/25kHz) ═ 5216 subcarriers. The total bandwidth of the 40 available power frequency points is 1MHz, and the frequency points correspond to 640 available subcarriers. The subcarriers which are not available for power except the 640 available subcarriers in the 230MHz frequency band spectrum can be used as virtual subcarriers in the spectrum transmission resources of the control frame and the data frame, so that the OFDM structure of the spectrum transmission resources of the control frame and the data frame is maintained.

It should be understood that the non-power frequency point in the 230MHz frequency band is used as a virtual subcarrier in the spectrum transmission resource of the control frame and the data frame, so that the spectrum transmission resource maintains the OFDM structure, and the receiving device can obtain a high-precision timing effect by using the phase information of the subcarrier (i.e. the available subcarrier) on the discrete power frequency point.

Optionally, as an embodiment, in the embodiment shown in fig. 1, the data frame includes 1 first-type subframe, M second-type subframes, and N third-type subframes, the first-type subframe is located between the second-type subframe and the third-type subframe, the first-type subframe includes Guard Period (GP), the second-type subframe is used for transmitting uplink data, the third-type subframe is used for transmitting downlink data, and M and N are both positive integers.

Specifically, as shown in fig. 4, one data Frame (Radio Frame) is composed of 15 subframes, each having a time domain length of 8ms, and one Frame having a length of 120 ms. One frame consists of 7 downlink subframes (i.e., subframes of the third type), 7 uplink subframes (i.e., subframes of the second type), and one special subframe (i.e., subframe of the first type).

Specifically, the first type of subframe includes a GP, and the GP is used for switching uplink and downlink transmission. It should be understood that the subframes of the first type are located between the subframes of the second type and the subframes of the third type.

As can also be seen from fig. 4, the frequency domain transmission resource of the data frame is a virtual bandwidth of 12MHz, and there are 480 frequency points in total, where 40 frequency points are available for power. It should be understood that fig. 4 only shows the spectrum resource of the subframe #1, and in practice, the spectrum resource is applicable to all subframes of the data frame.

Herein, the first type of subframes may be referred to as special subframes, the second type of subframes may be referred to as uplink subframes, and the third type of subframes may be referred to as downlink subframes. Specifically, the first type of subframes may be configured according to an actual transmission load condition.

Specifically, as shown in fig. 5a), the first type of subframe carries a Downlink cell Reference Signal (Downlink CRS) and an Uplink sounding Reference Signal (Uplink SRS) and a GP, and in this case, the first type of subframe is used for Uplink and Downlink calibration and also for high-precision timing. As shown in fig. 5b), the first type subframe carries a Physical Random Access Channel (PRACH) and a GP, and in this case, the first type subframe is used for uplink Access. As shown in fig. 5c), the first type subframe carries Uplink data (Uplink) and GP, in this case, the first type subframe is used for transmitting Uplink data. As shown in fig. 5d), the first type subframe carries Downlink data (Downlink) and GP, in this case, the first type subframe is used for transmitting Downlink data.

Optionally, in this embodiment of the present invention, the transmission Resource of the control frame and the data frame includes a plurality of Resource Blocks (RBs), a bandwidth of the RB in a frequency domain is 25KHz, and a time duration in a time domain is 8 ms.

Optionally, as an embodiment, the RB includes 16 subcarriers in a frequency domain, the RB includes 2 slots in a time domain, and each slot includes 5 OFDM symbols.

Specifically, the basic transmission structure (i.e., RB) of the time-frequency resources in the embodiment of the present invention is shown in fig. 6. The RB occupies one frequency bin (25kHz) in the frequency domain, and includes 16 subcarriers, i.e., the subcarrier spacing is 1.5625 kHz. Occupies 8ms in the time domain and includes two slots (slots), each Slot consisting of 5 OFDM symbols (OFDM symbols).

In the embodiment of the present invention, a Cyclic Prefix (CP) of the 1 st OFDM symbol of each slot is greater than a preset threshold, where the preset threshold enables frequency hopping transceiving of narrowband devices to be supported.

Specifically, for example, in fig. 6, considering that the delay spread of a 100km cell is 17us, the timing accuracy of a narrowband device (25kHz) is ± 40 μm, and the CP length of each OFDM symbol is set to 120 us. The CP of the first OFDM symbol of each slot is increased by 200us over 120us to provide the time required for the narrowband device to hop.

In the embodiment of the invention, the frequency diversity of the narrowband equipment is increased by increasing the CP of the 1 st OFDM symbol of each time slot of the frame, so that the transceiving performance of the narrowband equipment can be improved.

Alternatively, as an embodiment, in the case where the RB has the structure shown in fig. 6, the frame structure of the data frame may have the structure shown in fig. 4.

Alternatively, when the RB has the structure shown in fig. 6 and the frame structure of the data frame has the structure shown in fig. 4, the transmission time interval TTI of data transmission may be dynamically adjusted. Specifically, the TTI may include the following three modes:

a) a conventional TTI. The TTI is equal to the duration of one subframe, i.e., 8 ms.

b) And (4) time slot TTI. The TTI is equal to the duration of one slot, i.e. 4 ms.

c) An OFDM symbol TTI. The TTI is equal to the duration of one OFDM symbol, i.e., 0.8 ms.

The specific transmission delay interval TTI needs to be determined according to the position where the data arrives and the ratio of uplink and downlink subframes. For example, with the conventional TTI, the uplink data arrives after the beginning of the subframe 14 shown in fig. 4, and the uplink data needs to wait until the subframe 8 in the next data frame for transmission, and the time delay is 80 ms. The waiting time delay is closely related to the uplink and downlink switching time, for example, when the uplink and downlink switching is frequent, the waiting time delay is small, but the guard interval GP caused by the switching is large. Each retransmission brings about a latency of 120ms when a retransmission is required.

Optionally, as an embodiment, in the case that the RB has the structure shown in fig. 6, the data frame includes 1 first-type subframe, 3 second-type subframes (i.e., M is equal to 3), and 11 third-type subframes (i.e., N is equal to 11).

Specifically, as shown in fig. 7, one frame (radio frame) is composed of 15 subframes, each having a time domain length of 8ms, and one frame having a length of 120 ms. One frame is composed of 3 downlink subframes (i.e., subframes of the third type), 11 uplink subframes (i.e., subframes of the second type), and one special subframe (i.e., subframe of the first type).

It should be understood that the first type of subframe shown in fig. 7 includes GP, which is used for switching between uplink and downlink transmission. The structure of the first type subframe is shown in fig. 5, and is not described herein again. The frequency domain transmission resource of the data frame shown in fig. 7 is a virtual bandwidth of 12MHz, and there are 480 frequency points in total, wherein 40 frequency points are available for power. It should be understood that fig. 7 only shows the spectrum resource of the subframe #1, and in practice, the spectrum resource is applicable to all subframes of the data frame.

Alternatively, in the case that the RB has the structure shown in fig. 6 and the frame structure of the data frame has the structure shown in fig. 7, the transmission time interval TTI of the data transmission may be dynamically adjusted. Specifically, the TTI may include the following three modes:

With the conventional TTI, the uplink data arrives after the beginning of the subframe 14 shown in fig. 7, and then the uplink data needs to wait until the subframe 4 in the next frame for transmission, and the time delay is 40 ms. Each retransmission introduces a delay of 120ms when a retransmission is required.

Optionally, as an embodiment, an RB includes 8 subcarriers in a frequency domain, the RB includes 2 slots in a time domain, and each slot includes 11 OFDM symbols.

Specifically, as shown in fig. 8, an RB occupies one frequency point of 25kHz in the frequency domain, and one RB includes 8 subcarriers, i.e., the subcarrier spacing is 3.125 kHz. An RB occupies 8ms in the time domain, and includes two slots, each of which includes 11 OFDM symbols.

Alternatively, in the case where the RB has the structure shown in fig. 8, the data frame includes 1 first-type subframe, 2 second-type subframes (i.e., M is equal to 2), and 2 third-type subframes (i.e., N is equal to 2).

Specifically, as shown in fig. 9, one data frame is composed of 5 subframes, each having a time domain length of 8ms, and one frame having a length of 40 ms. One frame is composed of 2 downlink subframes (i.e., subframes of the third type), 2 uplink subframes (i.e., subframes of the second type), and one special subframe (i.e., subframe of the first type).

It should be understood that the first type of subframe shown in fig. 9 includes GP, which is used for switching between uplink and downlink transmission. The structure of the first type subframe is shown in fig. 5, and is not described herein again. The frequency domain transmission resource of the data frame shown in fig. 9 is a virtual bandwidth of 12MHz, and there are 480 frequency points in total, wherein 40 frequency points are available for power. It should be understood that fig. 9 only shows the spectrum resource of the subframe #1, and in practice, the spectrum resource is applicable to all subframes of the data frame.

Alternatively, in the case that the RB has the structure shown in fig. 8 and the frame structure of the data frame has the structure shown in fig. 9, the transmission time interval TTI of the data transmission may be dynamically adjusted. Specifically, the TTI may include the following three modes:

c) An OFDM symbol TTI. The TTI is equal to the duration of one OFDM symbol, i.e., 0.36 ms.

The specific transmission delay needs to be determined according to the position of data arrival and the ratio of uplink and downlink subframes. With the conventional TTI, the uplink data arrives after the beginning of subframe 4 shown in fig. 9, and then the uplink data needs to wait until subframe 3 in the next frame for transmission, where the waiting delay is 24 ms. Each retransmission introduces a latency of 40ms when a retransmission is required.

Fig. 10 shows another schematic flow chart of a communication method provided according to an embodiment of the present invention. In this case, the first type of subframe in the data frame is used for uplink access. The communication method 200 includes:

210, the terminal is in a sleep state.

220, the terminal wakes up from the sleep state (DRX timer expires).

230, the base station sends a control frame, the control frame carries a synchronization signal, a broadcast signal and a paging signal, a subframe carrying the broadcast signal in the control frame and a subframe carrying the paging signal are the same subframe, the subframe carrying the synchronization signal and the subframe carrying the broadcast signal are adjacent subframes, the subframe carrying the synchronization signal is located before the subframe carrying the broadcast signal, the paging signal is used for indicating whether the first device is paged, the broadcast signal includes a system frame number, and the terminal waking from a sleep state receives the control frame sent by the base station.

And 240, the terminal acquires the synchronous signal, the broadcast signal and the paging signal according to the control frame and judges whether the terminal is paged, if so, the process goes to 250, and if not, the process goes to 210.

250, the terminal measures the level of Reference Signal Receiving Quality (RSRQ), determines the channel level (channel class) of the terminal, and selects the uplink access preamble according to the channel level of the terminal.

And 260, the terminal sends a data frame to the base station, wherein the first type of subframe of the data frame is configured as a PRACH, and the first type of subframe of the data frame comprises the uplink access preamble selected by 250 so as to realize uplink access.

270, the base station obtains the uplink access preamble of the terminal according to the data frame sent by the terminal.

And 280, the base station performs data interaction with the terminal.

For example, a downlink control signal or a downlink data signal is transmitted by using a downlink data frame; and transmitting an uplink control signal or an uplink data signal by using the uplink data frame. Specifically, the terminal receives a data frame sent by the base station, and demodulates a data signal in the received data frame by using a scrambling code generated according to the system frame number.

Therefore, in the embodiment of the present invention, the synchronization signal, the broadcast signal and the paging signal are collectively transmitted in the control frame, and the control signals (i.e., the synchronization signal, the broadcast signal and the paging signal) required for the device to wake up from the sleep state are collectively transmitted in one frame, so that the time for the device to wake up can be reduced, the energy consumption of the device can be reduced, and the service life of the device can be prolonged.

The communication method provided by the embodiment of the invention can be applied to an electric power system, for example, the first device and the second device, or the base station and the terminal in the above embodiments are electric power devices, so that the energy consumption of the electric power devices can be effectively reduced, and for the devices powered by batteries, the service life of the batteries can be prolonged, thereby prolonging the service life of the electric power devices.

It should be understood that the communication method provided by the embodiment of the invention can be applied to a power system, and can also be applied to the internet of things in a broad sense, and particularly, for example, the internet of things for oil exploration or lake temperature detection.

Optionally, as an embodiment, in the embodiment shown in fig. 1, the spectrum transmission resource of the control frame and the data frame is a spectrum of a frequency band of the generalized internet of things.

For example, the frequency spectrum of the generalized Internet of things is 470Mhz to 510Mhz, or 779Mhz to 787 Mhz. For another example, the bandwidth of a frequency point of the spectrum of the generalized internet of things is 25 kHz.

Fig. 11 shows a schematic block diagram of a communication device 300 of an embodiment of the invention, the communication device 300 comprising:

a transceiver module 310, configured to receive a control frame sent by a second device, where the control frame carries a synchronization signal, a broadcast signal, and a paging signal, a subframe carrying the broadcast signal in the control frame and a subframe carrying the paging signal are the same subframe, the subframe carrying the synchronization signal and the subframe carrying the broadcast signal are adjacent subframes, and the subframe carrying the synchronization signal is located before the subframe carrying the broadcast signal, where the paging signal is used to indicate whether a communication device is paged, and the broadcast signal includes a system frame number;

a processing module 320 for causing the communication device to enter a sleep state when the paging signal indicates that the communication device is not paged;

the transceiving module 310 is further configured to receive a data frame sent by the second device when the paging signal indicates that the communication device is paged, and demodulate the data signal carried in the data frame by using a scrambling code generated according to the system frame number.

Optionally, as an embodiment, the spectrum transmission resource of the control frame and the data frame is 40 power dedicated frequency points authorized to the power wireless communication system in a 230MHz frequency band spectrum;

the transceiver module 310 is configured to receive control frames at 40 power dedicated frequency points;

the transceiver module 310 is further configured to receive the data frame sent by the second device on the 40 power dedicated frequency points when the paging signal indicates that the communication device is paged.

The embodiments of the present invention may be applied to an electric power system, for example, if the first device and the second device, or the base station and the terminal in the above embodiments are both electric power devices, the energy consumption of the electric power devices may be effectively reduced, and for a device powered by a battery, the life of the battery may be extended, thereby extending the life of the electric power devices.

Optionally, as an embodiment, the data frame includes 1 first-type subframe, M second-type subframes, and N third-type subframes, where the first-type subframe is located between the second-type subframe and the third-type subframe, the first-type subframe includes a guard interval GP, the second-type subframe is used to transmit uplink data, the third-type subframe is used to transmit downlink data, and M and N are positive integers.

Optionally, as an embodiment, the first type of subframe carries a downlink cell dedicated reference signal and an uplink channel sounding reference signal; or the first type of subframe bears physical random access channel signals; or the first type of subframe bears uplink data; or the first type subframe carries downlink data.

Optionally, as an embodiment, M and N are both 7; or M is 11 and N is 3; or both M and N are 2.

Optionally, as an embodiment, the transmission resource of the control frame and the data frame includes a plurality of resource blocks, a bandwidth of each resource block in a frequency domain is 25KHz, and a duration of each resource block in a time domain is 8 ms;

a resource block comprises 16 subcarriers in the frequency domain, 2 slots in the time domain, each slot comprising 5 orthogonal frequency division multiplexing, OFDM, symbols, or 8 subcarriers in the frequency domain, 2 slots in the time domain, each slot comprising 11 OFDM symbols.

Specifically, as shown in fig. 6 or fig. 8, the description is omitted here for brevity.

It should be understood that the communication device 300 in the embodiment of the present invention is embodied in the form of a functional unit. In an optional example, as can be understood by those skilled in the art, the communication device 300 may correspond to the first device or the terminal device in some embodiments described above, and may be configured to perform each procedure and/or step corresponding to the first device or the terminal device in the above method embodiments, and in order to avoid repetition, details are not described here again.

Specifically, in the embodiment of the present invention, the transceiver module 310 may be implemented by a transceiver, and it should be understood that the transceiver may be a device having both a receiving function and a transmitting function, or may be a component device of a receiving device having a receiving function and a transmitting device having a transmitting function. The processing module 320 may be implemented by a processor.

Fig. 12 shows a schematic block diagram of a communication device 400 provided by an embodiment of the present invention, the communication device 400 including:

a determining module 410, configured to determine a control frame, where the control frame carries a synchronization signal, a broadcast signal, and a paging signal, a subframe carrying the broadcast signal in the control frame and a subframe carrying the paging signal are the same subframe, the subframe carrying the synchronization signal and the subframe carrying the broadcast signal are adjacent subframes, and the subframe carrying the synchronization signal is located before the subframe carrying the broadcast signal, where the paging signal is used to indicate whether the first device is paged, and the broadcast signal includes a system frame number;

a transceiving module 420, configured to send a control frame to a first device, so that the first device knows whether to be paged, and demodulates a received data signal using a scrambling code generated according to a system frame number when the first device is paged;

the transceiving module 420 is further configured to send a data frame to the first device after sending the control signal, where the data frame carries the data signal.

the transceiver module 420 is configured to send a control frame to the first device on the 40 power dedicated frequency points;

the transceiver module 420 is further configured to transmit data frames to the first device on the 40 power-dedicated frequency points.

It should be understood that the communication device 400 in the embodiments of the present invention is embodied in the form of a functional unit. In an alternative example, it may be understood by those skilled in the art that the communication device 400 may correspond to a second device or a base station in some embodiments described above, and may be configured to perform each procedure and/or step corresponding to the second device or the base station in the above method embodiments, and in order to avoid repetition, details are not described here again.

Specifically, in the embodiment of the present invention, the determining module 410 may be implemented by a processor, and the transceiver module 4200 may be implemented by a transceiver, and it should be understood that the transceiver may be a device having both a receiving function and a transmitting function, or may be a component device of a receiving device having a receiving function and a transmitting device having a transmitting function.

Fig. 13 shows another schematic block diagram of a communication device 500 provided by an embodiment of the present invention, the communication device 500 comprising a processor 510, a memory 520, a bus system 530, a receiver 540 and a transmitter 550. Wherein the processor 510, the memory 520, the receiver 540 and the transmitter 550 are connected via a bus system 530. Memory 520 is configured to store instructions, processor 510 is configured to execute the instructions stored in memory 520, and execution of the instructions stored in memory 520 causes processor 510 to control receiver 540 to receive signals and transmitter 550 to transmit signals; the receiver 540 is configured to receive a control frame sent by the second device, where the control frame carries a synchronization signal, a broadcast signal, and a paging signal, a subframe carrying the broadcast signal in the control frame and a subframe carrying the paging signal are the same subframe, the subframe carrying the synchronization signal and the subframe carrying the broadcast signal are adjacent subframes, and the subframe carrying the synchronization signal is located before the subframe carrying the broadcast signal, where the paging signal is used to indicate whether the communication device 500 is paged, and the broadcast signal includes a system frame number; the processor 510 is configured to cause the communication device 500 to enter a sleep state when the paging signal indicates that the first device is not paged; the processor 510 is configured to control the receiver 540 to receive the data frame sent by the second device and demodulate the data signal carried in the data frame by using the scrambling code generated according to the system frame number when the paging signal indicates that the first device is paged.

Optionally, as an embodiment, the spectrum transmission resource of the control frame and the data frame is 40 power dedicated frequency points authorized to the power wireless communication system in a 230MHz frequency band spectrum; the receiver 540 is configured to receive control frames from 40 power-dedicated frequency points; and receiving the data frames transmitted by the second equipment on 40 power-specific frequency points.

The communication device 500 may correspond to the first device, the terminal device or the communication device 300 in some embodiments described above, and may be configured to perform the respective procedures and/or steps corresponding to the above method embodiments, and in order to avoid repetition, details are not described here.

Fig. 14 shows a schematic block diagram of a communication device 600 provided according to an embodiment of the present invention, the communication device 600 comprising: including a processor 610, a memory 620, a bus system 630, a receiver 640, and a transmitter 650. Wherein the processor 610, the memory 620, the receiver 640 and the transmitter 650 are connected by a bus system 630. The memory 620 is configured to store instructions, the processor 610 is configured to execute the instructions stored in the memory 620, and execution of the instructions stored in the memory 620 causes the processor 610 to control the transmitter 650 to transmit signals and the receiver 640 to receive signals; the processor 610 is configured to determine a control frame, where the control frame carries a synchronization signal, a broadcast signal, and a paging signal, a subframe carrying the broadcast signal in the control frame and a subframe carrying the paging signal are the same subframe, the subframe carrying the synchronization signal and the subframe carrying the broadcast signal are adjacent subframes, and the subframe carrying the synchronization signal is located before the subframe carrying the broadcast signal, where the paging signal is used to indicate whether the first device is paged, and the broadcast signal includes a system frame number; the transmitter 650 is configured to transmit a control frame to the first device, so that the first device knows whether to be paged, and demodulates the received data signal using a scrambling code generated according to a system frame number in the case of being paged; after the control signal is sent, a data frame is sent to the first device, and the data frame carries a data signal.

In the embodiment of the invention, the synchronization signal, the broadcast signal and the paging signal are collectively put in the control frame for transmission, and the control signals (namely the synchronization signal, the broadcast signal and the paging signal) required by the device to wake up from the sleep state are collectively put in one frame, so that the time for the device to wake up can be reduced, the energy consumption of the device is reduced, and the service life of the device is prolonged.

Optionally, as an embodiment, the spectrum transmission resource of the control frame and the data frame is 40 power dedicated frequency points authorized to the power wireless communication system in a 230MHz frequency band spectrum; the transmitter 650 is configured to transmit a control frame to the first device at 40 power-dedicated frequency points; and transmitting the data frame to the first equipment on 40 power-specific frequency points.

The application scenario of the embodiment of the invention is the electric power wireless communication system, and the control signals (namely the synchronization signals and the paging signals) required by the device to wake up from the sleep state are concentrated in the control frame and transmitted separately from the data signals, so that the waking time of the electric power device can be reduced, the energy consumption of the electric power device can be reduced, and particularly for the electric power device which uses the battery to maintain work, the service life of the battery can be prolonged, and the service life of the electric power device can be prolonged.

The communication device 600 may correspond to the second device, the base station or the communication device 400 in some embodiments described above, and may be configured to perform the respective procedures and/or steps corresponding to the above method embodiments, and in order to avoid repetition, details are not described here.

Alternatively, in this embodiment of the present invention, the processor may be a Central Processing Unit (CPU), and the processor may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, and the like. Wherein a general purpose processor may be a microprocessor or any conventional processor or the like.

The memory may include both read-only memory and random access memory, and provides instructions and data to the processor 810. The portion of memory may also include non-volatile random access memory. For example, memory 820 may also store device type information.

The bus system may include a power bus, a control bus, a status signal bus, and the like, in addition to the data bus. For clarity of illustration, however, the various buses are designated in the figure as the bus system 830.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor. To avoid repetition, it is not described in detail here.

It should also be understood that the various numerical designations referred to herein are merely for convenience in description and are not intended to limit the scope of embodiments of the invention.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. 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 invention.

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 ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of 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 through some interfaces, devices or units, and may be in an electrical, mechanical 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 network units. 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 invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A method of communication, comprising:

a terminal device receives a control frame sent by a network device, wherein the control frame carries a synchronization signal, a broadcast signal and a paging signal, a subframe carrying the broadcast signal in the control frame and a subframe carrying the paging signal are the same subframe, the subframe carrying the synchronization signal and the subframe carrying the broadcast signal are adjacent subframes, the subframe carrying the synchronization signal is positioned before the subframe carrying the broadcast signal, the paging signal is used for indicating whether the terminal device is paged, and the broadcast signal comprises a system frame number;

when the paging signal indicates that the terminal equipment is not paged, the terminal equipment enters a sleep state;

when the paging signal indicates that the terminal equipment is paged, the terminal equipment receives a data frame sent by the network equipment and demodulates the data signal carried in the data frame by using a scrambling code generated according to the system frame number,

the transmission resources of the control frame and the data frame comprise a plurality of resource blocks, the bandwidth of each resource block in a frequency domain is 25KHz, and the time length of each resource block in a time domain is 8 ms;

the resource block comprises 16 subcarriers in a frequency domain, the resource block comprises 2 slots in a time domain, each slot comprises 5 Orthogonal Frequency Division Multiplexing (OFDM) symbols, or the resource block comprises 8 subcarriers in the frequency domain, the resource block comprises 2 slots in the time domain, and each slot comprises 11 OFDM symbols;

the cyclic prefix CP of the 1 st OFDM symbol of each timeslot is greater than a preset threshold, and the preset threshold enables frequency hopping transceiving of narrowband equipment to be supported.

2. The communication method according to claim 1, wherein the spectrum transmission resource of the control frame and the data frame is 40 power dedicated frequency points authorized to a power wireless communication system in a 230MHz frequency band spectrum;

the terminal equipment receives the control frame sent by the network equipment, and the method comprises the following steps:

the terminal equipment receives the control frame from the 40 power special frequency points;

the receiving, by the terminal device, the data frame sent by the network device includes:

and the terminal equipment receives the data frames sent by the network equipment on the 40 power special frequency points.

3. The communication method according to claim 1, wherein the data frame includes 1 first-type subframe, M second-type subframes, and N third-type subframes, the first-type subframe is located between the second-type subframe and the third-type subframe, the first-type subframe includes a guard interval GP, the second-type subframe is used for transmitting uplink data, the third-type subframe is used for transmitting downlink data, and M and N are both positive integers.

4. The communication method according to claim 3, wherein the first type of subframe carries downlink cell-specific reference signals and uplink channel sounding reference signals; or

The first type of subframe bears physical random access channel signals; or

Carrying uplink data on the first type of subframe; or

And the first type of subframe carries downlink data.

5. The communication method according to claim 3 or 4, wherein M and N are both 7; or M is 11 and N is 3; or both M and N are 2.

6. A method of communication, comprising:

the network equipment determines a control frame, wherein a synchronization signal, a broadcast signal and a paging signal are carried in the control frame, a subframe carrying the broadcast signal and a subframe carrying the paging signal in the control frame are the same subframe, the subframe carrying the synchronization signal and the subframe carrying the broadcast signal are adjacent subframes, the subframe carrying the synchronization signal is positioned before the subframe carrying the broadcast signal, the paging signal is used for indicating whether terminal equipment is paged, and the broadcast signal comprises a system frame number;

the network equipment sends the control frame to the terminal equipment, so that the terminal equipment knows whether the terminal equipment is paged or not, and demodulates the received data signal by using a scrambling code generated according to the system frame number under the condition of being paged;

after sending the control signal, the network device sends a data frame to the terminal device, wherein the data frame carries a data signal,

7. The communication method according to claim 6, wherein the spectrum transmission resource of the control frame and the data frame is 40 power dedicated frequency points authorized to the power wireless communication system in a 230MHz frequency band spectrum;

the network device sends the control frame to the terminal device, including:

the network equipment sends the control frame to the terminal equipment on the 40 power special frequency points;

the network device sends a data frame to the terminal device, and the method comprises the following steps:

and the network equipment sends the data frame to the terminal equipment on the 40 power special frequency points.

8. The communication method according to claim 6, wherein the data frame includes 1 first-type subframe, M second-type subframes, and N third-type subframes, the first-type subframe is located between the second-type subframe and the third-type subframe, the first-type subframe includes a guard interval GP, the second-type subframe is used for transmitting uplink data, the third-type subframe is used for transmitting downlink data, and M and N are both positive integers.

9. The communication method according to claim 8, wherein the first type of subframe carries downlink cell-specific reference signals and uplink channel sounding reference signals; or

The first type of subframe bears physical random access channel signals; or

Carrying uplink data on the first type of subframe; or

And the first type of subframe carries downlink data.

10. A method according to claim 8 or 9, wherein M and N are both 7; or M is 11 and N is 3; or both M and N are 2.

11. A communication device, comprising:

a transceiver module, configured to receive a control frame sent by a network device, where the control frame carries a synchronization signal, a broadcast signal, and a paging signal, a subframe carrying the broadcast signal in the control frame and a subframe carrying the paging signal are the same subframe, a subframe carrying the synchronization signal and a subframe carrying the broadcast signal are adjacent subframes, and the subframe carrying the synchronization signal is located before the subframe carrying the broadcast signal, where the paging signal is used to indicate whether the communication device is paged, and the broadcast signal includes a system frame number;

a processing module, configured to enable the communication device to enter a sleep state when the paging signal indicates that the communication device is not paged;

the transceiver module is further configured to receive a data frame sent by the network device when the paging signal indicates that the communication device is paged, and demodulate a data signal carried in the data frame by using a scrambling code generated according to the system frame number,

12. The communication device according to claim 11, wherein the spectrum transmission resource of the control frame and the data frame is 40 power dedicated frequency points authorized to a power wireless communication system in a 230MHz frequency band spectrum;

the transceiver module is used for receiving the control frame on the 40 power special frequency points;

the transceiver module is further configured to receive the data frame sent by the network device on the 40 power dedicated frequency points when the paging signal indicates that the communication device is paged.

13. The communications device according to claim 11, wherein the data frame includes 1 first-type subframe, M second-type subframes, and N third-type subframes, the first-type subframe is located between the second-type subframe and the third-type subframe, the first-type subframe includes a guard interval GP, the second-type subframe is used for transmitting uplink data, the third-type subframe is used for transmitting downlink data, and M and N are both positive integers.

14. The communications device of claim 13, wherein downlink cell-specific reference signals and uplink channel sounding reference signals are carried on the first type of subframe; or

The first type of subframe bears physical random access channel signals; or

Carrying uplink data on the first type of subframe; or

And the first type of subframe carries downlink data.

15. The communication device of claim 13 or 14, wherein M and N are both 7; or M is 11 and N is 3; or both M and N are 2.

16. A communication device, comprising:

a determining module, configured to determine a control frame, where the control frame carries a synchronization signal, a broadcast signal, and a paging signal, a subframe carrying the broadcast signal in the control frame and a subframe carrying the paging signal are the same subframe, a subframe carrying the synchronization signal and a subframe carrying the broadcast signal are adjacent subframes, and the subframe carrying the synchronization signal is located before the subframe carrying the broadcast signal, where the paging signal is used to indicate whether a terminal device is paged, and the broadcast signal includes a system frame number;

a receiving and sending module, configured to send the control frame to the terminal device, so that the terminal device knows whether to be paged, and demodulates the received data signal using a scrambling code generated according to the system frame number when being paged;

the transceiver module is further configured to send a data frame to the terminal device after sending the control signal, where the data frame carries a data signal,

17. The communication device according to claim 16, wherein the spectrum transmission resource of the control frame and the data frame is 40 power dedicated frequency points authorized to a power wireless communication system in a 230MHz frequency band spectrum;

the transceiver module is used for sending the control frame to the terminal equipment on the 40 power special frequency points;

the transceiver module is further configured to send the data frame to the terminal device on the 40 power dedicated frequency points.

18. The communications device according to claim 16, wherein the data frame includes 1 first-type subframe, M second-type subframes, and N third-type subframes, the first-type subframe is located between the second-type subframe and the third-type subframe, the first-type subframe includes a guard interval GP, the second-type subframe is used for transmitting uplink data, the third-type subframe is used for transmitting downlink data, and M and N are both positive integers.

19. The communications device of claim 18, wherein downlink cell-specific reference signals and uplink channel sounding reference signals are carried on the first type of subframe; or

The first type of subframe bears physical random access channel signals; or

Carrying uplink data on the first type of subframe; or

And the first type of subframe carries downlink data.

20. The communication device of claim 18 or 19, wherein M and N are both 7; or M is 11 and N is 3; or both M and N are 2.