CN107484175B

CN107484175B - Data transmission method and base station thereof

Info

Publication number: CN107484175B
Application number: CN201710755649.8A
Authority: CN
Inventors: 谢纪岭; 管鲍; 张文健; 刘恒甫
Original assignee: Hytera Communications Corp Ltd
Current assignee: Hytera Communications Corp Ltd
Priority date: 2017-08-28
Filing date: 2017-08-28
Publication date: 2021-01-19
Anticipated expiration: 2037-08-28
Also published as: CN107484175A

Abstract

The embodiment of the application discloses a data transmission method and a base station thereof, which are used for sending downlink control DCI to User Equipment (UE) on available target spectrum resources in static spectrum resources and dynamic spectrum resources. The method in the embodiment of the application comprises the following steps: a base station determines dynamic spectrum resources which are spectrum resources not inherent to the base station but which can be used by the base station when not occupied; the base station determines available target spectrum resources in the dynamic spectrum resources; the base station generates dynamic resource indication information according to the available target frequency spectrum resources; the base station sends the dynamic resource indication information to User Equipment (UE), so that the UE can determine the available target frequency spectrum resource according to the dynamic resource indication information; and the base station sends downlink control information DCI to the UE through static spectrum resources and the available target spectrum resources, wherein the static spectrum resources are inherent spectrum resources of the base station.

Description

Data transmission method and base station thereof

Technical Field

The present application relates to the field of communications, and in particular, to a data transmission method and a base station thereof.

Background

The Long Term Evolution (LTE) system of the third Generation Partnership Project (3 GPP) works on a continuous spectrum, and a Physical Downlink Control Channel (PDCCH) has different formats by allocating different numbers of Control Channel resource elements (CCE), and one subframe can simultaneously multiplex a plurality of PDCCH channels to complete data transmission, wherein the number of total CCEs is related to the value of a Physical Control Format Indicator Channel (PCFICH) and the system bandwidth. The physical layer Downlink Control channel is used to transmit Downlink Control Information (DCI, Downlink Control Information), and the User Equipment (UE, User Equipment) may demodulate a Downlink traffic channel, transmit uplink data, or perform corresponding Control after receiving the Downlink Control Information.

The LTE230 system is a broadband access system working in a 230MHz Frequency band of an electric wireless broadband private network, and 40 discrete Frequency points are aggregated into a 1MHz bandwidth by adopting Orthogonal Frequency Division Multiplexing (OFDM, English full name: Orthogonal Frequency Division Multiplexing), high-order modulation and carrier aggregation technologies on the 40 discrete Frequency points allocated to the electric system, and the maximum data transmission rate can reach 1.76 Mbps. In the LTE230 system, each 25kHz is used as a separate sub-band, each sub-band is divided into 11 sub-carriers of 2kHz, the remaining 3kHz is used as a guard band of the sub-band, each sub-band adopts a channel structure similar to that of LTE, a downlink control channel frequency domain occupies one sub-band, and the spectrum usage of each sub-band is shown in fig. 1. The LTE230 system increases the data transmission rate of a single user using a carrier aggregation technique, and generates a baseband signal for each sub-band by processing component carrier data. Then, the multi-path data is combined into one path to form the final transmitting signal. Each discrete frequency point occupies 25kHz resources and is used as a single sub-band for data transmission, each 25kHz sub-band has a 3kHz guard band, and the guard band can not carry out data transmission. Even if a continuous section of spectrum resources can be used, data transmission in the electric wireless broadband private network 230MHz system is still transmitted in a sub-band mode, and a guard band of each sub-band occupies the spectrum resources but does not transmit data.

The existing LTE system works on a section of continuous spectrum resources, when the LTE system is applied to a 230MHz frequency band of an electric wireless broadband private network, because only 40 discrete points in the 230MHz frequency band of the electric wireless broadband private network are specially allocated to the electric power system for use, even if more spectrum resources are allocated in the future, the continuity of the spectrum resources cannot be guaranteed, and therefore the 230MHz electric wireless broadband private network system cannot directly use the LTE technology.

Disclosure of Invention

The embodiment of the application discloses a data transmission method and a base station thereof, which are used for transmitting downlink control DCI to User Equipment (UE) by the base station on available target spectrum resources in static spectrum resources and dynamic spectrum resources.

A first aspect of an embodiment of the present application provides a data transmission method:

a base station determines dynamic spectrum resources which are not inherent to the base station but can be used by the base station when not occupied;

the base station determines available target spectrum resources in the dynamic spectrum resources;

the base station generates dynamic resource indication information according to the available target frequency spectrum resources;

the base station sends the dynamic resource indication information to User Equipment (UE), so that the UE can determine the available target frequency spectrum resource according to the dynamic resource indication information;

the base station sends downlink control information DCI to the UE through the static spectrum resource and the available target spectrum resource, where the static spectrum resource is a spectrum resource inherent to the base station.

Based on the first aspect, in a first implementation manner of the first aspect of the embodiments of the present application, the determining, by the base station, an available target spectrum resource in the dynamic spectrum resources includes:

the base station determines the available target spectrum resource in the dynamic spectrum resource by coordinating or sensing the dynamic spectrum resource through spectrum.

Based on the first implementation manner of the first aspect, in a second implementation manner of the first aspect of the embodiments of the present application, the spectrum sensing includes:

energy sensing and/or matched filters and/or cooperative spectrum sensing.

Based on the first aspect, the first implementation manner of the first aspect, or any one implementation manner of the second implementation manner of the first aspect, in a third implementation manner of the first aspect of the embodiment of the present application, the generating, by the base station, dynamic resource indication information according to the available target spectrum resources includes:

and the base station generates dynamic resource indication information in a bitmap mode according to the available target spectrum resources.

Based on the third implementation manner of the first aspect, in a fourth implementation manner of the first aspect of the embodiments of the present application, the bitmap manner includes:

a binary coding mode, wherein different binary numbers in the binary coding mode respectively represent that the dynamic spectrum resource is available and the dynamic spectrum resource is unavailable.

Based on the first aspect, the first implementation manner of the first aspect, or any implementation manner of the second implementation manner of the first aspect, in a fifth implementation manner of the first aspect of the embodiment of the present application, the sending, by the base station, downlink control information DCI to the UE through the static spectrum resources and the available dynamic spectrum resources includes:

the base station transmits the DCI to the user equipment through logically continuous spectrum resources, where the logically continuous spectrum resources include the static spectrum resources and the target spectrum resources.

A second aspect of the embodiments of the present application provides a data transmission method:

the method comprises the steps that User Equipment (UE) acquires dynamic resource indication information, the dynamic resource indication information is generated after a base station determines dynamic spectrum resources and determines available target spectrum resources in the dynamic spectrum resources, and the dynamic spectrum resources are spectrum resources which are not inherent in the base station but can be used by the base station when not occupied;

the UE determines the available target frequency spectrum resource according to the dynamic resource indication information;

and the UE acquires the DCI sent by the base station from the available target spectrum resource and the static spectrum, wherein the static spectrum resource is the inherent spectrum resource of the base station.

Based on the second aspect, in a first implementation manner of the second aspect of the embodiment of the present application, after the UE acquires the downlink control information sent by the base station from the available dynamic spectrum resource and the static spectrum, the method further includes:

and the UE executes a corresponding command according to the DCI.

A third aspect of the present application provides a base station:

a first determination unit configured to determine a dynamic spectrum resource that is not inherent to the base station but is available for use by the base station when not occupied;

a second determining unit, configured to determine an available target spectrum resource in the dynamic spectrum resource;

a generating unit, configured to generate dynamic resource indication information according to the available target spectrum resource;

a first sending unit, configured to send the dynamic resource indication information to a user equipment UE, so that the UE may determine the available target spectrum resource according to the dynamic resource indication information;

a second sending unit, configured to send the DCI to the UE through the static spectrum resource and the available target spectrum resource, where the static spectrum resource is a spectrum resource inherent to the base station.

Based on the third aspect, in a first implementation manner of the third aspect of the embodiments of the present application, the second determining unit includes:

a determining module, configured to determine the available target spectrum resource in the dynamic spectrum resource through coordinating or spectrum sensing the dynamic spectrum resource.

In a second implementation manner of the third aspect of the embodiments of the present application, based on the third aspect or the first implementation manner of the third aspect, the generating unit includes:

and the generating module is used for generating dynamic resource indication information in a bitmap mode according to the available target spectrum resources.

In an embodiment of the third aspect, based on the third aspect or the first implementation manner of the third aspect, the second sending unit includes:

a sending module, configured to send the DCI to the user equipment through logically continuous spectrum resources, where the logically continuous spectrum resources include the static spectrum resources and the target spectrum resources.

A fourth aspect of the present application provides a user equipment UE:

a first obtaining unit, configured to obtain dynamic resource indication information, where the dynamic resource indication information is generated after a base station determines a dynamic spectrum resource and determines an available target spectrum resource in the dynamic spectrum resource, and the dynamic spectrum resource is not inherent in the base station, but is a spectrum resource that can be used by the base station and is unoccupied;

a determining unit, configured to determine the available target spectrum resource according to the dynamic resource indication information;

a second obtaining unit, configured to obtain, from the available target spectrum resource and the static spectrum, downlink control information DCI sent by the base station, where the static spectrum resource is a spectrum resource inherent to the base station.

Based on the fourth aspect, in a first implementation manner of the fourth aspect of the embodiments of the present application, the UE further includes:

and the execution unit is used for executing the corresponding command according to the DCI.

A fifth aspect of the present application provides a base station, which may include:

the system comprises a processor, a memory, a bus and an input/output interface, wherein the processor, the memory and the input/output interface are connected through the bus;

the memory for storing program code;

the processor executes the method according to the first aspect and any one of the first to fifth implementation manners of the first aspect when calling the program code in the memory.

A sixth aspect of the present application provides a UE, which may include:

the memory for storing program code;

the processor, when calling the program code in the memory, executes the method according to the second aspect as well as according to any of the first implementation manners of the second aspect.

A seventh aspect of embodiments of the present application provides a computer-readable storage medium, which includes instructions that, when executed on a computer, cause the computer to perform a method as any one implementation of the first aspect and the first to fifth implementations of the first aspect, the second aspect and the first implementation of the second aspect, the third aspect and the first to third implementations of the third aspect, the fourth aspect and the first implementation of the fourth aspect.

An eighth aspect of embodiments of the present application provides a computer program product containing instructions, which when run on a computer, causes the computer to perform the method according to any one of the first aspect and the first to fifth implementations of the first aspect, the first implementation of the second aspect and the second aspect, the first to third implementations of the third aspect and the fourth aspect, the fourth aspect and the first implementation of the fourth aspect.

According to the technical scheme, the embodiment of the application has the following advantages: by decomposing the spectrum resources of the allocated frequency band into dynamic spectrum resources which are not inherent to the base station but are available at a specific moment and static spectrum resources which are inherent to the base station, the base station determines the dynamic spectrum resources, generates dynamic resource indication information according to the dynamic spectrum resources and then sends the dynamic resource indication information to the UE, so that the UE confirms the available dynamic spectrum resources according to the dynamic resource indication information, and then the base station sends downlink control information to the UE through the target spectrum resources and the static spectrum resources. In this embodiment, by decomposing the spectrum resources into dynamic spectrum resources and static spectrum resources, when a section of continuous spectrum resources is available, the spectrum resources occupied by the downlink control channel can be decomposed into dynamic spectrum resources and static spectrum resources by designing the downlink control channel, and a section of spectrum resources is formed by calling the dynamic spectrum resources and then combining the static spectrum resources, so that data transmission is performed by using the spectrum resources without decomposing into a plurality of subbands, and transmission can be directly performed in the form of one transmission signal. Therefore, when a section of continuous spectrum resources can be used, the sub-band of 25kHz is not used as a basic unit for data transmission on the spectrum resources, so that the guard band of the sub-band is eliminated, and the spectrum efficiency is improved. Through the combination of the static spectrum resources and the dynamic spectrum resources, the method is suitable for a broadband system for distributing continuous spectrum resources and a broadband system for distributing discrete spectrum resources.

Drawings

FIG. 1 is a distribution diagram of dedicated frequency points of an electrical power system of the present application;

FIG. 2 is a schematic diagram of a continuous spectrum resource allocation according to the present application;

fig. 3 is a schematic diagram of LTE230 spectrum of the present application;

fig. 4 is a flow chart of LTE230 carrier aggregation physical layer processing according to the present application;

FIG. 5 is a schematic diagram of an embodiment of the data transmission method of the present application;

FIG. 6 is a schematic diagram of another embodiment of the data transmission method of the present application;

FIG. 7 is a diagram of available resources for PDCCH;

FIG. 8 is a schematic diagram of another embodiment of the data transmission method of the present application;

FIG. 9 is a schematic diagram of an embodiment of a base station of the present application;

FIG. 10 is a schematic diagram of another embodiment of a base station of the present application;

FIG. 11 is a schematic diagram of another embodiment of a base station of the present application;

FIG. 12 is a schematic diagram of another embodiment of a base station of the present application;

FIG. 13 is a schematic diagram of an embodiment of a user equipment UE according to the present application;

FIG. 14 is a schematic diagram of another embodiment of a user equipment UE according to the present application;

FIG. 15 is a schematic diagram of another embodiment of a base station of the present application;

fig. 16 is a schematic diagram of another embodiment of a user equipment UE according to the present application.

Detailed Description

The embodiment of the application discloses a data transmission method and a base station thereof, which are used for sending downlink control DCI to User Equipment (UE) on available target spectrum resources in static spectrum resources and dynamic spectrum resources.

In order to meet the requirement of building an electric energy information acquisition and monitoring system of an electric power system, in 1991, the original national radio management committee issues 'notice on frequency band planning of printed civil ultrashort wave telemetry, remote control and data transmission services' (No. 1991), and the 223-235 MHz frequency band is specified to be used as a frequency band for services such as telemetry, remote control, data transmission and the like, and is mainly used by industries such as energy, army, weather, earthquake, water conservancy, ground mines, light industry and the like at present. According to the plan of the national radio administration committee, 40 frequency points which can be used by the private power network are discretely distributed in 223 MHz-235MHz frequency bands, the bandwidth of each frequency point is 25kHz, 10 single-frequency points are discretely and unevenly distributed in 228 MHz-230 MHz, 15 pairs of double-frequency points are discretely and unequally distributed in the 223 MHz-228 MHz frequency band and the 230 MHz-235MHz frequency band at the receiving and transmitting frequency interval of 7MHz, and the frequency point distribution diagram is shown in figure 1. The detailed frequencies of the 10 single-frequency bins are shown in table 1, and the detailed frequency table 2 of the 15 pairs of double-frequency bins is shown.

Table 1230 MHz Power industry authorization single frequency point information (unit: MHz)

Table 2230 MHz electric power industry authorization double frequency point information (unit: MHz)

Main platform	230.525	230.675	230.725	230.850	230.950
						Belongs to the platform	223.525	223.675	223.725	223.850	223.950
Main platform	231.025	231.125	231.175	231.225	231.325
						Belongs to the platform	224.025	224.125	224.175	224.225	224.325
Main platform	231.425	231.475	231.525	231.575	231.650
						Belongs to the platform	224.425	224.475	224.525	224.575	224.650

With the construction of the smart power grid, the demand of services such as power generation, power transmission, power distribution and power utilization on the transmission throughput of the wireless private network is continuously increased, and the national radio administration may allocate a section of continuous spectrum resources to the power industry in the future so as to improve the transmission rate of the wireless private network and meet the transmission demand of the power service. The continuous spectrum resource allocation includes two cases, as shown in fig. 2: (1) a part of continuous spectrum resources in the 223-235 MHz frequency band are all allocated to the power industry for special use, and other industries cannot use the resources. (2) The power industry and other industries share all spectrum resources or a part of continuous spectrum resources in 223-235 MHz frequency bands, and resource coordination is carried out between the industries through management or technical means, so that mutual influence is avoided.

The LTE downlink control channel comprises: a Physical Control Format Indicator Channel (PCFICH, acronym of english: Physical Control Format Indicator Channel) indicating how many OFDM symbols are used to transmit the PDCCH. And the Physical layer Hybrid Automatic Repeat Request Indicator Channel (PHICH, Physical Hybrid ARQ Indicator Channel) is used for feeding back an uplink HARQ (Hybrid Automatic Repeat Request) receiving result. A physical downlink control channel, PDCCH, indicating corresponding PDSCH information and other control information. A Physical Broadcast Channel (PBCH, english abbreviation: Physical Broadcast Channel) for transmitting information management library information. The downlink control channel carries various downlink control information including uplink data scheduling information, downlink data transmission indication information, common control information, uplink power control commands, and the like. The sending end sends the downlink control information to the receiving end through the downlink control channel, and the receiving end can execute a corresponding command after receiving the information. Specifically, the base station sends downlink control information such as physical resources used for uplink data transmission, a modulation and coding scheme, power control information, HARQ related information, and an aperiodic channel state indication request command to the terminal, and the UE can send uplink data after analyzing the information; a base station sends downlink control information such as physical resource indication information, a modulation and coding mode, HARQ information, data power offset and the like used by downlink data to a terminal, and a UE can demodulate a downlink shared data channel after analyzing the information; in addition, the system broadcast control information, common control information such as random access and paging, and uplink and downlink power control commands also need to be sent to the terminal through a downlink control channel. Therefore, the downlink control information is sent to the UE, so that the UE can be controlled to execute the corresponding command.

In the process of evolution from 3G to 4G, an LTE system of 3GPP works on a section of continuous spectrum, one DCI corresponds to one PDCCH, Control Channel resource elements (CCE) are mainly used in the mapping process from the DCI to the PDCCH, appropriate CCE needs to be defined for more effectively configuring time domain resources of various channels, the DCI adjusts the signal length to be integral multiple of the CCE through rate matching, a plurality of DCI information are combined and mapped to PDCCH sequences according to a certain mapping rule, and the mapping process from a transmission Channel to a physical Channel is completed. The 1 CCE comprises 9 continuous Resource Element Groups (REG, full English name: Resource Element Groups), the 1 REG comprises 4 REs, the control channel occupies the first 1-4 Orthogonal Frequency Division Multiplexing (OFDM, full English name: Orthogonal Frequency Division Multiplexing) symbols of the time domain, the specific occupied symbol number is indicated by CFI information carried by a physical layer control format indication channel PCFICH, the REG which is not occupied by the PCFICH and PHICH in the whole Frequency band is used on the Frequency domain, the control channel has four formats, and a plurality of PDCCH channels can be multiplexed in one subframe at the same time. The number of subcarriers per symbol is small, and thus more symbols are required to carry control information of the PDCCH, and the more OFDM allocated to the control channel, the more CCEs.

When the system is applied to a 230MHz frequency band, the OFDM, high-order modulation and carrier aggregation technology is adopted on discrete frequency points allocated to power use, 40 frequency points are aggregated into a 1MHz bandwidth, the maximum rate in the bandwidth can reach 1.76Mbps, each 25kHz in the LTE230 system is taken as an individual sub-band, each sub-band is divided into 11 sub-carriers of 2kHz, the rest 3kHz is taken as a guard band of the sub-band, each sub-band adopts a channel structure similar to LTE, a frequency domain of a downlink control channel of the sub-band occupies one sub-band, and the frequency spectrum use condition of each sub-band is shown in fig. 3.

The LTE230 system uses a carrier aggregation technology to improve the data transmission rate of a single user, and when the wave aggregation technology is adopted, the physical layer processing flow is as shown in fig. 4, and each processing branch corresponds to the generation of one component carrier. After serial-to-parallel conversion, symbol mapping, resource mapping, Fast Fourier Transform (IFFT, for short, and full name), and CP insertion are completed on each component carrier, processing of one component carrier data is completed, and a baseband signal of each sub-band is generated. Then, through the steps of up-sampling and digital mixing, the multi-path data is combined into one path to form the final transmitting signal.

In the LTE system of 3GPP, the subcarrier spacing is 15kHz, a Physical Resource Block (PRB, Physical Resource Block) frequency domain as a basic unit of data scheduling includes 12 subcarriers, a frequency domain Resource occupied by a downlink control channel is a certain continuous spectrum known to a UE, the UE only needs to detect DCI information on these resources, and the electric wireless private network 230MHz system uses a subband as a scheduling unit, and allocates multiple subbands to the same user for use by carrier aggregation according to a user demand to improve a data transmission rate, which is most suitable for use on a completely discrete spectrum. Meanwhile, the implementation of the carrier aggregation technology also faces the problems of high complexity and the like, and a single PDCCH only schedules a single UE, so that the system capacity is also limited.

In order to adapt to spectrum allocation in the power industry, no matter whether the power industry allocates a continuous spectrum or a discrete spectrum, the spectrum allocation method can be applied to a 230MHz system and avoid defects as much as possible, for example, the defect of low spectrum utilization rate when allocating the continuous spectrum is avoided. The invention designs a downlink control channel design method applied to a broadband system for dynamically adjusting spectrum resources on a 230MHz frequency band of an electric wireless private network, in the system, available resources comprise two parts, one part is allocated frequency resources which are called static resources, the other part is frequency resources which are not allocated to the electric power industry for use, but can be used when the spectrum resources are idle and are called dynamic resources, a base station sends downlink control information on all available resources including the static resources and the dynamic resources, compared with the method only using the static resources, the capacity of a control channel can be effectively improved, meanwhile, the method can form logically continuous spectrum resources by the static spectrum resources and the dynamic spectrum, when the spectrum resources work in a continuous frequency domain, data transmission does not need to be divided into a plurality of sub-bands, thereby avoiding occupying the spectrum resources, thereby avoiding a reduction in spectrum utilization. Meanwhile, the invention can be applied to discrete spectrum resources through dynamic adjustment. And the data informs the UE of the dynamically usable resources by sending a broadcast message on the static spectrum resources, and the UE performs PDCCH detection on the static resources and the usable dynamic resources after acquiring the dynamic resource indication information to acquire the DCI.

It should be noted that, this embodiment is based on a 230MHz system of an electric wireless private network, and the system is a spectrum resource system allocated by the national radio regulatory commission to discrete frequency points used in the electric power industry, and it can be understood that any spectrum resource system allocated to discrete frequency points used in the electric power industry is applicable to this embodiment, and the specific embodiment is not limited herein.

It should be noted that the dynamic spectrum resource is a spectrum resource other than the spectrum resource allocated to 40 discrete points used by the power industry in the 228MHz-235MHz frequency band, and the dynamic spectrum resource is allocated to other industries except the power industry, but when the dynamic spectrum resource is in a vacancy state, that is, not used, the power industry can use the dynamic spectrum resource.

In this embodiment, the static spectrum resources are spectrum resources allocated to 40 discrete points used by the power industry on the 228MHz-235MHz frequency band.

It should be noted that static and dynamic are only relatively more fixed, available and changeable spectrum resources than the power industry, and are available only in specific situations, and do not represent that the spectrum resources are in a static or moving state.

In this embodiment, in the 228MHz-235MHz frequency band, each dynamic spectrum resource is still the same as 40 static spectrum resources, each 25KHz is taken as a separate sub-band, each sub-band is divided into 11 sub-carriers of 2KHz, and the remaining 3KHz is taken as a guard band.

It should be noted that each dynamic spectrum resource and each static spectrum resource are frequency points at an interval of 25 kHz.

It should be noted that, the base station generates dynamic resource indication information, where the dynamic resource indication information is used to indicate which dynamic spectrum resources are available and which dynamic spectrum resources are not available, and the base station sends the indication information to the UE, so that the UE also knows which dynamic spectrum resources are available and which dynamic spectrum resources are not available, please refer to fig. 5, which will be described below.

501. The base station determines dynamic spectrum resources;

numbering every 25kHz interval frequency point except for static spectrum resources in the system bandwidth in a 228MHz-235MHz frequency band, and numbering N frequency points with the bandwidth of 25kHz except for the static resources in the system bandwidth from low to high according to the frequency of the frequency points from 0, 1, … and N-1.

After the spectrum resources allocated to the base station are divided into dynamic spectrum resources and static spectrum resources, the base station determines which spectrum resources are dynamic spectrum resources.

In this embodiment, the manner for the base station to determine the dynamic spectrum resources may be that the base station detects which frequency point information of the spectrum resources in the allocated spectrum resources matches with the information of the frequency points allocated by the national radio regulatory committee to the power industry, the frequency point whose frequency point information of the default spectrum resources matches with the information of the frequency points allocated by the national radio regulatory committee to the power industry is the static spectrum resource, and the rest are the dynamic spectrum resources.

502. The base station determines available target spectrum resources in the dynamic spectrum resources;

in this embodiment, the manner in which the base station determines the available target spectrum resource in the dynamic spectrum resource may be that the base station determines the available target spectrum resource in the dynamic spectrum resource through coordination or spectrum sensing of the dynamic spectrum resource, and it can be understood that, in practical application, the manner in which the base station determines the available target spectrum resource in the dynamic spectrum resource may also be other manners, and is not limited herein.

In this embodiment, spectrum sensing is a key technology for implementing cognitive radio, where spectrum sensing refers to that a cognitive user acquires spectrum usage information in a wireless network through various signal detection and processing means, and a base station can sense resource usage on different frequency points in a system frequency band.

In this embodiment, the manner in which the base station senses the resource usage on different frequency points in the system frequency band may be that the base station senses the resource usage on different frequency points in a periodic scanning manner, and the specific period time may be set by the base station, for example, the dynamic spectrum resource is scanned once every 2 minutes to sense the resource usage on different frequency points. It is understood that, in practical applications, the scanning may be performed in other ways besides the periodic scanning, and is not limited herein.

In this embodiment, the spectrum sensing manner may be energy sensing and/or matched filter and/or cooperative spectrum sensing, and it is understood that in practical applications, the spectrum sensing manner may also be other manners, and is not limited herein.

In this embodiment, energy sensing is an implementation means of spectrum sensing, and is a method for detecting an unknown signal energy distribution.

In this embodiment, the matched filter is a signal detection method in spectrum sensing, and the signal-to-noise ratio of the signal can be maximized at the output end.

In this embodiment, cooperative sensing is an implementation means of spectrum sensing, and cooperative sensing is widely focused because multipath and shadow fading effects can be eliminated to some extent.

503. The base station generates dynamic resource indication information according to the available target frequency spectrum resources;

in this embodiment, after determining an available target spectrum resource in the dynamic spectrum resource according to a result of the coordination or the spectrum sensing, the base station generates dynamic resource indication information according to the target spectrum resource. The base station determines the available target spectrum resource in the dynamic spectrum resources, and is not limited herein.

504. The base station sends the dynamic resource indication information to the User Equipment (UE), so that the UE can determine available target frequency spectrum resources according to the dynamic resource indication information;

in this embodiment, the base station sends the dynamic resource indication Information to the UE through a System Information Block (SIB, System Information Block) message or a broadcast message, it is understood that the base station may send the dynamic resource indication Information to the UE through other messages, which is not limited herein.

In this embodiment, the base station may send the dynamic resource indication information to the UE through the target channel, and it can be understood that, in practical application, the base station sends the dynamic resource indication information to the UE through another channel that is not the target channel, and the specific implementation is not limited herein.

In the present embodiment, the target channel includes a dedicated channel or a broadcast channel other than the broadcast channel.

In this embodiment, the base station sends the dynamic resource indication information to the UE periodically on the static spectrum resource, which can be understood that, in practical application, the base station may send the dynamic resource indication information to the UE through other spectrum resources, and the details are not limited herein.

In this embodiment, in order to increase the reliability of communication, the base station may perform channel coding on the dynamic resource indication information and then transmit the dynamic resource indication information.

In this embodiment, the UE may determine the available target spectrum resources according to the dynamic resource indication information, which indicates that the UE has the capability of determining the available target spectrum resources according to the dynamic resource indication information.

505. And the base station sends the downlink control information DCI to the UE through the static spectrum resources and the available target spectrum resources.

In this implementation, after the UE determines the available target spectrum resource, the base station sends downlink control information to the UE on the state spectrum resource and the available target spectrum resource, and then the UE acquires the downlink control information.

In this embodiment, the DCI has multiple forms, but the UE does not know in advance what form the received downlink control channel carries, so the UE may acquire the downlink control information in a manner that the UE blindly detects the DCI information on the static spectrum resource and the target spectrum resource, and it can be understood that, in practical application, the DCI may be in other manners besides the blinding manner, and is not limited herein.

In this embodiment, the downlink control information may be encoded and multiplexed according to a certain format, and then mapped to the static spectrum resource and the available target spectrum resource according to a certain rule.

In this embodiment, the multiplexing manner may be frequency division multiplexing, and it is understood that in practical application, the multiplexing manner may also be time division multiplexing, and is not limited herein.

In this embodiment, the format of the downlink control channel can be adjusted according to the length of the downlink control information DCI, so that the CCE allocation is more flexible, and the number of REGs included in 1 CCE can be reduced.

In this embodiment, the base station determines an available target spectrum resource in the dynamic spectrum resource by determining the dynamic spectrum resource, generates dynamic resource indication information according to the target spectrum resource, and then transmits the indication information to the UE, so that the UE determines the target spectrum resource, and the base station transmits downlink control information DCI to the UE by combining the inherent static spectrum resource with the target spectrum resource. The method is suitable for a broadband system with dynamically adjusted spectrum resources in a mode of combining static spectrum resources with dynamic spectrum resources. The dynamic resource indication information is sent through the broadcast channel or other special channels except the broadcast channel, so that the complexity is low and the implementation is easy.

In this embodiment, when a segment of continuous spectrum resources is available, the target spectrum resources and the static spectrum resources may form logically continuous spectrum resources, so that when data is transmitted, a sub-band of 25kHz is not used as a basic unit, and a situation that a guard band of the sub-band occupies the spectrum resources but is not used for data transmission is eliminated. Referring to fig. 6, the following description will be made.

601. The base station determines dynamic spectrum resources;

602. the base station determines available target spectrum resources in the dynamic spectrum resources;

603. the base station generates dynamic resource indication information according to the available target frequency spectrum resources;

604. the base station sends dynamic resource indication information to User Equipment (UE);

in this embodiment, steps 601 to 604 are similar to steps 501 to 504 in the embodiment shown in fig. 5, and detailed description thereof is omitted here.

It should be noted that the dynamic resource indication information may be generated in a bitmap manner, and it is understood that the dynamic resource indication information may also be generated in other manners, and the specific details are not limited herein.

In this embodiment, the bitmap mode may be a binary coding mode, X-bit dynamic resource indication information indicates whether the dynamic spectrum resource is available, and different binary numbers respectively indicate that the dynamic spectrum resource is available and the dynamic spectrum resource is unavailable. For example, if the first five dynamic spectrum resources of the 10 dynamic spectrum resources are available, the first five dynamic spectrum resources are the target spectrum resources, where 1 represents that the dynamic spectrum resources are available, and 0 represents that the dynamic spectrum resources are unavailable, the generated 10-bit dynamic resource indication information is 1111100000.

605. The UE determines available target frequency spectrum resources according to the dynamic resource indication information;

in this embodiment, if the dynamic resource indication information is generated in a bitmap manner, before the UE receives the dynamic resource indication information, the base station may send a target message to the UE, where the target message is used to indicate a generation manner of the dynamic resource indication information.

And after acquiring the dynamic indication information, the base station analyzes the indication information and determines the frequency points of the available target spectrum resources by combining the frequency point distribution.

606. A base station sends downlink control information DCI;

in this implementation, after the UE determines the available target spectrum resource, the base station sends downlink control information to the UE on the logically continuous spectrum resource, and then the UE acquires the downlink control information.

In this embodiment, a manner of acquiring the downlink control information by the UE is similar to that in step 505, and is not limited herein.

In the present embodiment, the logically continuous spectrum resources are in a discrete state in form, but it is logically conceivable that the dynamic spectrum resources and the static spectrum resources are aggregated together to form a continuous spectrum resource.

In this embodiment, the logically continuous spectrum resources may include other spectrum resources besides the static spectrum resources and the target spectrum resources, and it is understood that the logically continuous spectrum resources are only formed by the static spectrum resources and the target spectrum resources, and the details are not limited herein.

In this embodiment, the downlink control information may be encoded and multiplexed according to a certain format, and then mapped onto the logically continuous spectrum resources according to a certain rule.

607. The UE acquires Downlink Control Information (DCI) on logically continuous spectrum resources.

In this embodiment, after the UE determines the target spectrum resource available in the dynamic spectrum resource, the UE performs the same action as the base station, and forms the static spectrum resource and the target spectrum resource into a logically continuous spectrum resource. And then the UE acquires the downlink control information DCI on the logically continuous spectrum resources.

In this embodiment, the definition of the logically continuous spectrum resources is similar to that in step 606, and is not described herein again.

After the UE acquires the downlink control information, the UE analyzes the downlink control information and executes a corresponding command. For example, the UE analyzes the downlink control information to obtain physical resources, a modulation and coding scheme, power control information, HARQ related information, and an aperiodic csi indicator request command used for uplink data transmission, and then the UE performs an operation of sending uplink control data according to the downlink control information.

Referring to fig. 7, the following description will be provided with reference to specific application scenarios.

The available frequency resources of the whole 230MHz frequency band are only about 8.5MHz, considering the needs of networking, the system bandwidth of each cell should not be too large, taking a 223.5 MHz-226.5 MHz frequency band 3MHz system as an example, the system bandwidth has 120 frequency points with 25kHz bandwidth, wherein the number of frequency points allocated to the power system is 15, as shown in fig. 1, that is, the number of frequency points of static frequency resources in the system is 15 and 375kHz, the number of frequency points of dynamic frequency resources is 105, and the downlink control channel is designed according to the following steps:

(1) numbering every 25kHz interval frequency point except for static spectrum resources in the system bandwidth, numbering 105 frequency points with the bandwidth of 25kHz except for the static resources in the system bandwidth from low to high according to the frequency of the frequency points, numbering the frequency points from 0 to 1, … and 104, and then determining 105 dynamic spectrum resources by the base station.

(2) The base station determines, according to coordination or through spectrum sensing, a target spectrum resource that can be used in the dynamic spectrum resource, specifically, the base station determines a frequency point of the target spectrum resource that can be used in 105 frequency points of the dynamic frequency resource, and an available resource schematic diagram is shown in fig. 7.

(3) The base station generates dynamic resource indication information according to the available target frequency spectrum resources, when the dynamic resource indication information can be generated in a bitmap mode, 105-bit dynamic resource indication information a0a1 … … aN-1 is used for indicating whether the resources are available, the value is 0 for indicating that the resources are unavailable, the value is 1 for indicating that the resources are available, a0 corresponds to the frequency point resources with the number of 0, and a104 corresponds to the frequency domain resources with the number of 104.

(4) The base station sends the dynamic resource indication information a0a1 … … a104 to the UE through SIB messages or broadcast messages, and may send the a0a1 … … a104 after channel coding as required. The dynamic resource indication information may be periodically transmitted on the static frequency domain resources.

(5) The base station forms the static frequency domain resource and the target frequency domain resource into logically continuous frequency spectrum resource, the base station encodes and multiplexes the downlink control information according to a certain format and then maps the encoded and multiplexed downlink control information to the logically continuous resource according to a certain rule, and the downlink control information is transmitted in the form of a transmitting signal instead of a 25kHz sub-band serving as a basic unit.

(6) And the UE also forms the state frequency domain resource and the target frequency domain resource into a logically continuous frequency spectrum resource, and then the UE acquires the DCI from the logically continuous frequency spectrum resource, analyzes the DCI and executes a corresponding command.

In this embodiment, when a continuous segment of spectrum resources can be used, the target spectrum resources and the static spectrum resources can form logically continuous spectrum resources, so that when data is transmitted, a sub-band of 25kHz is not used as a basic unit, and a situation that a guard band of the sub-band occupies the spectrum resources but is not used for data transmission is eliminated. The number of users scheduled simultaneously can also be increased by multiplexing the downlink control information of a plurality of users.

Fig. 5 and fig. 6 illustrate a data transmission method of the present embodiment from the perspective of a base station, and please refer to fig. 8, which will be described below from the perspective of a user equipment UE.

801. The method comprises the steps that User Equipment (UE) acquires dynamic resource indication information, and the dynamic resource indication information is generated after a base station determines dynamic spectrum resources and determines available target spectrum resources in the dynamic spectrum resources;

in this embodiment, the UE may acquire the dynamic resource indication information in an SIB message or a broadcast message, where the SIB message or the broadcast message carries the dynamic resource indication information, and it is understood that the UE may acquire the dynamic resource indication information in other manners, and this is not limited herein.

In this embodiment, the UE may acquire the dynamic resource indication information from the target channel in a manner that the UE acquires the dynamic resource indication information from the target channel, and it can be understood that the UE may also acquire the dynamic resource indication information from other channels except the target channel, which is not limited herein.

In this embodiment, the target channel includes a broadcast channel or other dedicated channels besides the broadcast channel, and it is understood that the target channel may also be a non-dedicated channel, which is not limited herein.

In this embodiment, the UE may periodically acquire the dynamic resource indication information in the static spectrum resource, and it may be understood that the manner in which the UE acquires the dynamic resource indication information may also be other manners, and is not limited herein.

In this embodiment, the dynamic resource indication information acquired by the UE may be dynamic resource indication information obtained after channel coding by the base station.

802. The UE determines available target frequency spectrum resources according to the dynamic resource indication information;

and after acquiring the dynamic resource indication information, the UE determines the target frequency spectrum resource which can be used according to the information.

In this embodiment, the dynamic resource indication information may be generated in a bitmap manner, or may be generated in other manners, and is not limited herein.

In this embodiment, the bitmap mode may be a binary coding mode, X-bit dynamic resource indication information indicates whether the dynamic spectrum resource is available, and different binary numbers respectively indicate that the dynamic spectrum resource is available and the dynamic spectrum resource is unavailable.

803. And the UE acquires the downlink control information DCI sent by the base station from the available target spectrum resources and the static spectrum.

In this embodiment, the UE may obtain the DCI from the logically continuous spectrum resources, where the logically continuous spectrum resources are only formed by the static spectrum resources and the target spectrum resources, and it can be understood that the logically continuous spectrum resources include other spectrum resources besides the static spectrum resources and the target spectrum resources, and this is not limited herein.

In this embodiment, the logically continuous spectrum resources are similar to the logically continuous spectrum resources in step 606, and detailed description thereof is omitted here.

In this embodiment, the method for the UE to obtain the DCI from the logically continuous spectrum resources may adopt a blind detection method, and may also adopt other methods besides the blind detection method, which is not limited herein.

In this embodiment, the downlink control information may be encoded and multiplexed according to a certain format, and then mapped to a logically continuous spectrum resource according to a certain rule, which is not limited herein.

In this embodiment, the multiplexing manner may be frequency division multiplexing, and it is understood that in practical application, a time division multiplexing manner may also be adopted, and is not limited herein.

In this embodiment, the UE acquires the dynamic resource indication information, may determine an available target spectrum resource according to the dynamic resource indication information, and acquires the DCI sent by the base station from the available target spectrum resource and the static spectrum.

In this embodiment, after acquiring the downlink control information, the UE may execute a corresponding command according to the downlink control information.

In this embodiment, the corresponding command includes downlink traffic channel demodulation or uplink data transmission, and may include other commands in addition, which is not limited herein.

While a data transmission method of the present embodiment is described above, referring to fig. 9, a base station of the present embodiment will be described below.

A first determining unit 901 configured to determine a dynamic spectrum resource that is not specific to the base station but is available for use by the base station when the dynamic spectrum resource is unoccupied;

a second determining unit 902, configured to determine an available target spectrum resource in the dynamic spectrum resource;

a generating unit 903, configured to generate dynamic resource indication information according to the available target spectrum resource;

a first sending unit 904, configured to send the dynamic resource indication information to a user equipment UE, so that the UE may determine the available target spectrum resource according to the dynamic resource indication information;

a second sending unit 905, configured to send downlink control information DCI to the UE through the static spectrum resource and the available target spectrum resource, where the static spectrum resource is a spectrum resource inherent to the base station.

In this embodiment, after determining the dynamic spectrum resources by the first determining unit 901, the second determining unit 902 determines available target spectrum resources in the dynamic spectrum resources, the generating unit 903 generates dynamic resource indication information according to the available target spectrum resources and sends the indication information to the UE by the first sending unit 904, so that the UE can also determine the target spectrum resources, and then the second sending unit 905 sends downlink control information DCI to the UE by using the static spectrum resources and the available target spectrum resources.

Referring to fig. 10, a manner in which the second determining unit determines the target spectrum resource will be described below.

A first determining unit 1001 configured to determine a dynamic spectrum resource that is not specific to the base station but is available for use by the base station when the dynamic spectrum resource is unoccupied;

a second determining unit 1002, configured to determine an available target spectrum resource in the dynamic spectrum resources;

a generating unit 1003, configured to generate dynamic resource indication information according to the available target spectrum resource;

a first sending unit 1004, configured to send the dynamic resource indication information to a user equipment UE, so that the UE may determine the available target spectrum resource according to the dynamic resource indication information;

a second sending unit 1005, configured to send the DCI to the UE through the static spectrum resource and the available target spectrum resource, where the static spectrum resource is a spectrum resource inherent to the base station.

Wherein the second determination unit includes:

a determining module 10021 is configured to determine, through coordination or spectrum sensing of the dynamic spectrum resources, the available target spectrum resources in the dynamic spectrum resources.

In the embodiment, the target spectrum resources available in the dynamic spectrum resources are determined through coordination or spectrum sensing, so that the feasibility and flexibility of the scheme are increased.

There are various ways to generate the dynamic resource indication information according to the available target spectrum resources, please refer to fig. 11, one of which will be described below.

First determining section 1101 configured to determine a dynamic spectrum resource which is not unique to the base station but is available for use by the base station when the dynamic spectrum resource is unoccupied;

a second determining unit 1102, configured to determine an available target spectrum resource in the dynamic spectrum resource;

a generating unit 1103, configured to generate dynamic resource indication information according to the available target spectrum resource;

a first sending unit 1104, configured to send the dynamic resource indication information to a user equipment UE, so that the UE may determine the available target spectrum resource according to the dynamic resource indication information;

a second sending unit 1105, configured to send the DCI to the UE through the static spectrum resource and the available target spectrum resource, where the static spectrum resource is a spectrum resource inherent to the base station.

Wherein the generating unit includes:

a generating module 11031, configured to generate dynamic resource indication information in a bitmap manner according to the available target spectrum resources.

In this embodiment, the dynamic resource indication information may be generated in a bitmap manner according to the available target spectrum resources. The implementability and flexibility of the scheme are increased.

When a continuous spectrum resource is allocated, the target spectrum resource and the static spectrum resource can be generated into a logically continuous spectrum resource, so that the method is suitable for a broadband system of the continuous spectrum resource. Referring to fig. 12, the following description will be made.

A first determining unit 1201, configured to determine a dynamic spectrum resource, which is a spectrum resource that is not inherent to the base station but is available for use by the base station when the dynamic spectrum resource is unoccupied;

a second determining unit 1202, configured to determine an available target spectrum resource in the dynamic spectrum resources;

a generating unit 1203, configured to generate dynamic resource indication information according to the available target spectrum resource;

a first sending unit 1204, configured to send the dynamic resource indication information to a user equipment UE, so that the UE may determine the available target spectrum resource according to the dynamic resource indication information;

a second sending unit 1205 is configured to send the DCI to the UE through the static spectrum resource and the available target spectrum resource, where the static spectrum resource is a spectrum resource inherent to the base station.

Wherein the second transmitting unit includes:

a sending module 12051, configured to send the DCI to the user equipment through logically continuous spectrum resources, where the logically continuous spectrum resources include the static spectrum resources and the dynamic spectrum resources.

In this embodiment, the target spectrum resource and the static spectrum resource are used to generate logically continuous spectrum resources, so that data transmission is not performed in a sub-band manner, and a situation that a guard band occupies the spectrum resources but does not perform data transmission is avoided, thereby avoiding a reduction in spectrum utilization.

The present embodiment has been explained above from the perspective of a base station, and will be described below from the perspective of a user equipment UE.

A first obtaining unit 1301, configured to obtain dynamic resource indication information, where the dynamic resource indication information is generated after a base station determines a dynamic spectrum resource and determines an available target spectrum resource in the dynamic spectrum resource, and the dynamic spectrum resource is not inherent in the base station, but is a spectrum resource that can be used by the base station and is unoccupied;

a determining unit 1302, configured to determine the available target spectrum resource according to the dynamic resource indication information;

a second obtaining unit 1303, configured to obtain the downlink control information DCI sent by the base station from the available target spectrum resource and the static spectrum, where the static spectrum resource is a spectrum resource inherent to the base station.

In this embodiment, after the first obtaining unit 1301 obtains the dynamic resource indication information, the determining unit 1302 determines the available target spectrum resource according to the dynamic resource indication information, so that the second obtaining unit 1303 can obtain the downlink control information DCI sent by the base station from the available target spectrum resource and the static spectrum.

In this embodiment, after the second obtaining unit obtains the DCI, the UE executes a corresponding command according to the DCI, please refer to fig. 14, which will be described below.

A first obtaining unit 1401, configured to obtain dynamic resource indication information, where the dynamic resource indication information is generated after a base station determines a dynamic spectrum resource and determines an available target spectrum resource in the dynamic spectrum resource, and the dynamic spectrum resource is not inherent in the base station, but is a spectrum resource that can be used by the base station and is unoccupied;

a determining unit 1402, configured to determine the available target spectrum resource according to the dynamic resource indication information;

a second obtaining unit 1403, configured to obtain the downlink control information DCI sent by the base station from the available target spectrum resource and the static spectrum, where the static spectrum resource is a spectrum resource inherent to the base station.

Wherein the UE further comprises:

an executing unit 1404, configured to execute a corresponding command according to the DCI.

Fig. 15 is a schematic diagram of a base station 1500 according to an embodiment of the present disclosure, which may include one or more Central Processing Units (CPUs) 1522 (e.g., one or more processors) and a memory 1532, and one or more storage media 1530 (e.g., one or more mass storage devices) for storing applications 1542 or data 1544, wherein the base station 1500 may have a relatively large difference according to configuration or performance. Memory 1532 and storage media 1530 may be, among other things, transient or persistent storage. The program stored in the storage medium 1530 may include one or more modules (not shown), each of which may include a series of instruction operations for the base station. Further, a central processor 1522 may be provided in communication with the storage medium 1530 to execute a series of instruction operations in the storage medium 1530 on the base station 1500.

The central processing unit 1522 can perform the following steps according to the instruction operation:

determining dynamic spectrum resources that are not native to the base station but are available for use by the base station when unoccupied;

determining available target spectrum resources in the dynamic spectrum resources;

generating dynamic resource indication information according to the available target frequency spectrum resources;

sending the dynamic resource indication information to User Equipment (UE) so that the UE can determine the available target spectrum resource according to the dynamic resource indication information;

and sending Downlink Control Information (DCI) to the UE through the static spectrum resources and the available target spectrum resources, wherein the static spectrum resources are spectrum resources inherent to the base station.

In this embodiment, after the central processor 1522 determines the available target spectrum resources by sending the dynamic resource indication information, the central processor 1522 sends DCI to the UE on the static spectrum resources and the available target spectrum resources.

Base station 1500 can also include one or more power supplies 1526, one or more wired or wireless network interfaces 1550, one or more input-output interfaces 1558, and/or one or more operating systems 1541, such as Windows Server, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, etc.

The steps performed by the base station in the above embodiment may be based on the base station structure shown in fig. 15.

As shown in fig. 16, for convenience of description, only the parts related to the embodiments of the present application are shown, and details of the specific technology are not disclosed, please refer to the method part in the embodiments of the present application. The terminal can be any terminal equipment including a mobile phone, a tablet computer, a Personal Digital Assistant (abbreviation: PDA, full name Of english: Personal Digital Assistant), a Sales terminal (abbreviation: POS, full name Of Point Of Sales), a vehicle-mounted computer, an interphone and the like, taking the terminal as the interphone for example:

fig. 16 is a block diagram illustrating a partial structure of an intercom related to a terminal provided in an embodiment of the present application. Referring to fig. 16, the interphone includes: radio Frequency (RF) circuit 1610, memory 1620, input unit 1630, sensor 1640, audio circuit 1650, processor 1660, and power supply 1670. Those skilled in the art will appreciate that the intercom configuration shown in fig. 16 does not constitute a limitation of an intercom, and may include more or fewer components than those shown, or some components in combination, or a different arrangement of components.

The following describes each component of the intercom specifically with reference to fig. 16:

RF circuitry 1610 is configured to receive and transmit signals during a message transmission or call, and in particular, to receive downlink messages from a base station and process the received downlink messages to processor 1660; in addition, the data for designing uplink is transmitted to the base station. In general, RF circuitry 1610 includes, but is not limited to, an antenna, at least one Amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA, Low Noise Amplifier), a duplexer, and the like. In addition, the RF circuitry 1610 may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol, including but not limited to Global System for Mobile communications (GSM), General Packet Radio Service (GPR), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), e-mail, Short Message Service (SMS), Short Messaging Service (SMS), and so on.

The memory 1620 can be used for storing software programs and modules, and the processor 1660 executes various functional applications and data processing of the interphone by running the software programs and modules stored in the memory 1620. The memory 1620 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required by at least one function, and the like; the storage data area may store data (such as audio data, a phone book, etc.) created according to the use of the intercom, and the like. Further, the memory 1620 may comprise high speed random access memory, and may also comprise non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 1630 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the interphone. Specifically, the input unit 1630 may include a touch panel 1631 and other input devices 1632. The touch panel 1631, also referred to as a touch screen, can collect touch operations of a user (e.g., operations of the user on or near the touch panel 1631 using any suitable object or accessory such as a finger or a stylus) and drive the corresponding connection device according to a preset program. Alternatively, the touch panel 1631 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts it to touch point coordinates, sends the touch point coordinates to the processor 1660, and receives and executes commands from the processor 1660. In addition, the touch panel 1631 may be implemented by various types, such as resistive, capacitive, infrared, and surface acoustic wave. The input unit 1630 may include other input devices 1632 in addition to the touch panel 1631. In particular, other input devices 1632 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.

The intercom may also include at least one sensor 1640 such as a light sensor, motion sensor, and other sensors. In particular, the light sensor may include an ambient light sensor and a proximity sensor, which may perform a backlight operation when the intercom is moved to the ear. As one type of motion sensor, an accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications (such as horizontal and vertical placement, magnetometer attitude calibration), vibration recognition related functions (such as pedometer and tapping), and the like for recognizing the attitude of an intercom; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured in the intercom, further description is omitted here.

Audio circuitry 1650, speaker 1651, and microphone 1652 may provide an audio interface between a user and an intercom. The audio circuit 1650 may transmit the electrical signal converted from the received audio data to the speaker 1651, and the electrical signal is converted into an audio signal by the speaker 1651 and output; on the other hand, the microphone 1652 converts the collected sound signals into electrical signals, which are received by the audio circuit 1650 and converted into audio data, which are processed by the audio data output processor 1660, and then sent to another intercom via the RF circuit 1610, or output to the memory 1620 for further processing.

The processor 1660 is the control center of the interphone, connects the various parts of the whole interphone with various interfaces and lines, performs the various functions of the interphone and processes the data by running or executing the software programs and/or modules stored in the memory 1620 and calling the data stored in the memory 1620, thereby monitoring the interphone as a whole. Alternatively, processor 1660 may include one or more processing units; preferably, the processor 1660 may integrate an application processor, which handles primarily the operating system, user interface, and applications, etc., and a modem processor, which handles primarily wireless communications. It is to be appreciated that the modem processor described above may not be integrated into the processor 1660.

The intercom also includes a power supply 1670 (such as a battery) for powering the various components, which may preferably be logically connected to the processor 1660 through a power management system, thereby providing management of charging, discharging, and power consumption through the power management system.

Although not shown, the intercom may also include a camera, a bluetooth module, etc., which are not described herein.

In the embodiment of the present application, the processor 1660 included in the terminal further has the following functions:

acquiring dynamic resource indication information, wherein the dynamic resource indication information is generated after a base station determines dynamic spectrum resources and determines available target spectrum resources in the dynamic spectrum resources, and the dynamic spectrum resources are spectrum resources which are not inherent in the base station but can be used by the base station when not occupied;

determining the available target frequency spectrum resource according to the dynamic resource indication information;

and acquiring the downlink control information DCI sent by the base station from the available target spectrum resource and the static spectrum, wherein the static spectrum resource is the inherent spectrum resource of the base station.

In this embodiment, after determining the available target spectrum resources by obtaining the dynamic resource indication information, the processor 1660 obtains the downlink control information DCI in the static spectrum resources and the available target spectrum resources.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, 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.

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 application 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 integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit 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 application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution 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 in the embodiments of fig. 5, 6 and 8 of the present application. 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 embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A data transmission method is applied to a broadband system of a power wireless private network, and is characterized by comprising the following steps:

a base station determines dynamic spectrum resources which are spectrum resources not inherent to the base station but which can be used by the base station when not occupied;

the base station sends downlink control information DCI to the UE through static spectrum resources and the available target spectrum resources, wherein the static spectrum resources are inherent spectrum resources of the base station;

the base station determining available target spectrum resources in the dynamic spectrum resources comprises:

the base station determines the available target spectrum resources in the dynamic spectrum resources by coordinating the dynamic spectrum resources.

2. The method of claim 1, wherein the base station determining an available target spectrum resource from the dynamic spectrum resources comprises:

and the base station determines the available target spectrum resource in the dynamic spectrum resource through spectrum sensing of the dynamic spectrum resource.

3. The method of claim 2, wherein spectrum sensing comprises:

energy sensing and/or matched filters and/or cooperative spectrum sensing.

4. The method according to any of claims 1 to 3, wherein the base station generating dynamic resource indication information according to the available target spectrum resources comprises:

5. The method of claim 4, wherein the bitmap manner comprises:

6. The method according to any one of claims 1 to 3, wherein the base station sending downlink control information DCI to the UE via the static spectrum resources and the available target spectrum resources comprises:

the base station sends the DCI to the user equipment through logically continuous spectrum resources, wherein the logically continuous spectrum resources comprise the static spectrum resources and the target spectrum resources.

7. A data transmission method is applied to a broadband system of a power wireless private network, and is characterized by comprising the following steps:

the method comprises the steps that User Equipment (UE) acquires dynamic resource indication information, wherein the dynamic resource indication information is generated by a base station after a dynamic spectrum resource is determined and an available target spectrum resource in the dynamic spectrum resource is determined by coordinating the dynamic spectrum resource, and the dynamic spectrum resource is a spectrum resource which is not inherent in the base station but can be used by the base station when not occupied;

the UE determines the available target frequency spectrum resources according to the dynamic resource indication information;

and the UE acquires the downlink control information DCI sent by the base station from the available target spectrum resources and static spectrum resources, wherein the static spectrum resources are the inherent spectrum resources of the base station.

8. The method according to claim 7, wherein after the UE obtains the downlink control information sent by the base station from the available target dynamic spectrum resource and the static spectrum, the method further comprises:

and the UE executes a corresponding command according to the DCI.

9. A base station is applied to a broadband system of a power wireless private network, and is characterized by comprising:

a first determination unit configured to determine a dynamic spectrum resource that is not inherent to the base station but is available to the base station when the dynamic spectrum resource is unoccupied;

a second determining unit, configured to determine an available target spectrum resource in the dynamic spectrum resources;

a second sending unit, configured to send DCI to the UE through a static spectrum resource and the available target spectrum resource, where the static spectrum resource is a spectrum resource inherent to the base station;

the second determination unit includes:

a determining module, configured to determine the available target spectrum resource in the dynamic spectrum resources by coordinating the dynamic spectrum resources.

10. A User Equipment (UE) is applied to a power wireless private network broadband system, and is characterized by comprising:

a first obtaining unit, configured to obtain dynamic resource indication information, where the dynamic resource indication information is generated by a base station after determining a dynamic spectrum resource and determining an available target spectrum resource in the dynamic spectrum resource by coordinating the dynamic spectrum resource, and the dynamic spectrum resource is not inherent to the base station, but is a spectrum resource that can be used by the base station and is unoccupied;

a second obtaining unit, configured to obtain the DCI sent by the base station from the available target spectrum resource and a static spectrum resource, where the static spectrum resource is a spectrum resource inherent to the base station.

11. A base station is applied to a broadband system of a power wireless private network, and is characterized by comprising: a memory, a transceiver, a processor, and a bus system;

wherein the memory is to store programs and instructions;

the transceiver is used for receiving or sending information under the control of the processor;

the processor is used for executing the program in the memory;

the bus system is used for connecting the memory, the transceiver and the processor so as to enable the memory, the transceiver and the processor to communicate;

wherein the processor is configured to call program instructions in the memory to perform the method of any one of claims 1 to 6.

12. A User Equipment (UE) is applied to a power wireless private network broadband system, and is characterized by comprising: a memory, a transceiver, a processor, and a bus system;

wherein the memory is to store programs and instructions;

the processor is used for executing the program in the memory;

wherein the processor is configured to invoke program instructions in the memory to perform the method of any of claims 7 to 8.