CN106550468B - Data transmission method and base station - Google Patents

Data transmission method and base station Download PDF

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Publication number
CN106550468B
CN106550468B CN201610978477.6A CN201610978477A CN106550468B CN 106550468 B CN106550468 B CN 106550468B CN 201610978477 A CN201610978477 A CN 201610978477A CN 106550468 B CN106550468 B CN 106550468B
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frequency band
frequency
information
cell
interference
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CN106550468A (en
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云翔
孙立新
丁颖哲
周明宇
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Baicells Technologies Co Ltd
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Baicells Technologies Co Ltd
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Priority to PCT/CN2017/109803 priority patent/WO2018082710A1/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453Resources in frequency domain, e.g. a carrier in FDMA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69Spread spectrum techniques
    • H04B1/713Spread spectrum techniques using frequency hopping
    • H04B1/715Interference-related aspects
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/54Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/541Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference

Abstract

The invention discloses a data transmission method and a base station. Wherein, the method comprises the following steps: acquiring interference information of a first cell to which communication equipment belongs; determining frequency band information for transmitting data in a multi-band transmission manner based on the interference information; the frequency band information is provided to the communication device. The invention solves the technical problem of low reliability of data transmission in the unauthorized frequency band in the prior art, thereby improving the throughput of the LTE system.

Description

Data transmission method and base station
Technical Field
The present invention relates to the field of data processing, and in particular, to a data transmission method and a base station.
Background
The existing wireless communication includes wireless communication performed on a licensed frequency band (i.e., authorized frequency band) and an Unlicensed frequency band (i.e., Unlicensed frequency band), where the wireless communication performed on the licensed frequency band refers to a system in which an operator provides a communication service for a user terminal (e.g., a mobile phone) by deploying a radio access network device (e.g., a base station) and a core network device (e.g., a Home location register, abbreviated as HLR). For example, in communications provided by current mobile communication operators (such as china mobile), frequency bands occupied by such wireless communications are used by a certain mobile communication operator (hereinafter referred to as an operator) alone, and the operator manages and optimizes resources of the frequency bands (for example, controls density, transmission power, antenna tilt angle, and the like of access devices operating in the frequency bands), so as to ensure reliability and effectiveness of wireless communication services provided in the frequency bands.
Wireless communication in the unlikensed frequency band, such as WiFi (Wireless Fidelity), is a generic name of 802.11 series technologies developed by the international Electrical and Electronics Engineers (Institute of Electrical and Electronics Engineers), such as 802.11 a/g/n/ac. WiFi is primarily used for local wireless communication, generally with relatively small coverage, and is a simple and relatively low-cost means of wireless communication. The initial version of WiFi operates at 2.4GHz, but due to the smaller bandwidth available in the 2.4GHz band, and the larger number of wireless transmitting devices operating in the 2.4GHz band, the performance of WiFi operating at 2.4GHz is degraded. WiFi has in later releases explored a new communication frequency of 5GHz (note: 5GHz here does not refer to a single band, but to individual bands around 5GHz, it being understood that from 4.9GHz to 5.9GHz all are the 5GHz bands mentioned here).
With the continuous development of the prior art, the current mobile communication system has been developed to the fourth Generation mobile communication system, which is a Long Term Evolution (Long Term Evolution/Long Term Evolution-Advanced, LTE/LTE-a) established by the international organization for standardization 3gpp (the third Generation Partnership project). In order to solve the contradiction between the increasing data traffic demand and the increasingly scarce radio frequency, 3GPP has started research work on applying the LTE system to the unlicensed frequency band in the day ahead, aiming at increasing the available bandwidth for the LTE system. The Assisted authorized Access system (LAA) currently discussed in 3GPP mainly aggregates an authorized frequency band and an unlicensed frequency band by a Carrier Aggregation (CA), and extends the LTE system to the unlicensed frequency band for transmission. It should be noted that, in the unlicensed frequency band, individuals, enterprises, and operators may deploy the wireless access device, and the deployment location is also relatively arbitrary. Therefore, large interference may be generated in the unlicensed frequency band, and the interference situation may change frequently. In order to reduce the influence of the interference of the unlicensed band on the system performance, high-priority services, such as voice services, are generally transmitted through the licensed band, and low-priority services, such as FTP (File Transfer Protocol) download, web browsing, and the like, are generally transmitted through the unlicensed band. However, when the LTE system employs independent Access (SAA), that is, when only the unlicensed band is available, a high priority service must be transmitted through the unlicensed band, and when the LTE system is interfered by other wireless Access devices using the unlicensed band, such as WiFi, the reliability of data transmission in the unlicensed band is low, so that the throughput (throughput) of the LTE system is reduced, and the delay is increased.
Aiming at the problem of low reliability of data transmission in an unlicensed frequency band in the prior art, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a data transmission method and a base station, which at least solve the technical problem that the throughput of an LTE (Long term evolution) system is reduced due to the fact that frequency resources of an unauthorized frequency band cannot be utilized because of low reliability of data transmission in the unauthorized frequency band in the prior art.
According to an aspect of an embodiment of the present invention, there is provided a data transmission method, including: acquiring interference information of a first cell to which communication equipment belongs; determining frequency band information for transmitting data in a multi-band transmission manner based on the interference information; and providing the frequency band information to the communication equipment.
Further, the multiband transmission scheme includes: frequency hopping transmission mode and/or concurrent transmission mode.
Further, when the multiband transmission scheme includes the frequency hopping transmission scheme, determining band information for transmitting data in the multiband transmission scheme based on the interference information includes: and generating frequency band information containing a frequency hopping sequence for transmitting data according to the frequency hopping transmission mode based on the interference information, wherein frequency bands used in different time periods in a frequency hopping cycle are recorded in the frequency hopping sequence.
Further, generating frequency band information containing a frequency hopping sequence for transmitting data in the frequency hopping transmission mode based on the interference information includes: generating the frequency hopping sequence according to the interference intensity of each frequency band of the first cell recorded in the interference information, wherein the proportion of each frequency band in the frequency hopping sequence is in inverse proportion relation with the interference intensity of each frequency band; and/or generating the frequency hopping sequence according to the resource utilization rate of each frequency band used by the second cell recorded in the interference information, wherein the occurrence proportion of each frequency band in the frequency hopping sequence has an inverse proportion relation with the resource utilization rate of each frequency band, and the second cell is a cell which generates interference on the first cell.
Further, when the multiband transmission mode includes the concurrent transmission mode, determining band information for transmitting data in the multiband transmission mode based on the interference information includes: and determining frequency band information containing merging factors of each frequency band for concurrently transmitting data according to the concurrent transmission mode based on the interference information.
Further, determining, based on the interference information, frequency band information including a combining factor of each frequency band for concurrently transmitting data in the concurrent transmission manner includes: determining a combination factor of each frequency band according to the interference intensity of each frequency band of the first cell recorded in the interference information, wherein the combination factor of each frequency band has an inverse proportional relation with the interference intensity of each frequency band; and/or determining a combination factor of each frequency band according to the resource utilization rate of each frequency band used by a second cell recorded in the interference information, wherein the combination factor of each frequency band and the resource utilization rate of each frequency band have an inverse proportional relation, and the second cell is a cell generating interference on the first cell.
Further, determining frequency band information for transmitting data in a multi-band transmission manner based on the interference information includes: determining a plurality of frequency bands for transmitting data, and determining time-frequency resources for transmitting the data in each frequency band.
Further, determining the time-frequency resource for transmitting the data in each frequency band includes any one of: acquiring a time-frequency resource appointed in the indication information; under the condition that the channel quality of a first time-frequency resource in the frequency band is higher than that of a second time-frequency resource, selecting the first time-frequency resource as the time-frequency resource for transmitting the data; and randomly selecting time-frequency resources for transmitting the data in the frequency band.
Further, the obtaining of the interference information of the first cell to which the communication device belongs includes: monitoring interference information of the first cell through a listener; and/or acquiring interference information of the first cell reported by the communication equipment, wherein the interference information includes interference strength of each frequency band in the first cell, and/or resource utilization rate of each frequency band used by a second cell which generates interference to the first cell.
Further, providing the frequency band information to the communication device includes one of: responding to the request information of the user, and sending the frequency band information to the communication equipment; sending the frequency band information to the communication equipment through a designated channel; and broadcasting the frequency band information through a broadcast channel.
According to another aspect of the embodiments of the present invention, there is also provided a base station, including: the communication equipment comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring interference information of a first cell to which the communication equipment belongs; a determining unit configured to determine frequency band information for transmitting data in a multi-band transmission manner based on the interference information; and the providing unit is used for providing the frequency band information to the communication equipment.
Further, the multiband transmission scheme includes: frequency hopping transmission mode and/or concurrent transmission mode.
Further, the determining unit includes: and a generating module, configured to generate, based on the interference information, frequency band information including a frequency hopping sequence for transmitting data according to the frequency hopping transmission mode, where frequency bands used in different time periods within a frequency hopping cycle are recorded in the frequency hopping sequence, when the multi-band transmission mode includes the frequency hopping transmission mode.
Further, the generating module includes: the first generation submodule is used for generating the frequency hopping sequence according to the interference intensity of each frequency band of the first cell recorded in the interference information, wherein the proportion of each frequency band in the frequency hopping sequence is in inverse proportion relation with the interference intensity of each frequency band; and/or a second generation submodule, configured to generate the frequency hopping sequence according to resource usage rates of the second cell using each frequency band recorded in the interference information, where a ratio of occurrence of each frequency band in the frequency hopping sequence has an inverse proportional relationship with the resource usage rate of each frequency band, and the second cell is a cell that generates interference with the first cell.
Further, the determining unit includes: and a determining module, configured to determine, based on the interference information, frequency band information including a combining factor for each frequency band for concurrently transmitting data according to the concurrent transmission mode, when the multi-band transmission mode includes the concurrent transmission mode.
Further, the determining module includes: a first determining submodule, configured to determine a combining factor of each frequency band according to the interference strength of each frequency band of the first cell recorded in the interference information, where the combining factor of each frequency band and the interference strength of each frequency band have an inverse proportional relationship; and/or a second determining submodule, configured to determine a combining factor of each frequency band according to a resource usage rate of each frequency band used by a second cell recorded in the interference information, where the combining factor of each frequency band and the resource usage rate of each frequency band have an inverse proportional relationship, and the second cell is a cell that generates interference with the first cell.
Further, the determining unit includes: the processing module is used for determining a plurality of frequency bands for transmitting data and determining time-frequency resources for transmitting the data in each frequency band.
Further, the processing module comprises any one of the following: the acquisition submodule is used for acquiring the time-frequency resource appointed in the indication information; a selecting submodule, configured to select a first time-frequency resource in the frequency band as a time-frequency resource for transmitting the data when a channel quality of the first time-frequency resource is higher than a channel quality of a second time-frequency resource; and the random selection submodule is used for randomly selecting the time-frequency resource for transmitting the data in the frequency band.
Further, the acquisition unit includes: the monitoring module is used for monitoring the interference information of the first cell through a monitor; and/or an obtaining module, configured to obtain interference information of the first cell, where the interference information includes interference strength of each frequency band in the first cell, and/or a resource utilization rate of each frequency band used by a second cell that generates interference with the first cell.
Further, the providing unit includes one of: the response module is used for responding to the request information of the user and sending the frequency band information to the communication equipment; the sending module is used for sending the frequency band information to the communication equipment through a specified channel; and the broadcasting module is used for broadcasting the frequency band information through a broadcasting channel.
According to another aspect of the embodiments of the present invention, there is also provided a base station, including: a transmitter, a receiver, a memory, and a processor coupled to the memory, the transmitter, the receiver, the memory, and the processor communicating over a bus system; the memory stores a software program; the processor, by executing the software program, is to: acquiring interference information of a first cell to which communication equipment belongs through a receiver; determining frequency band information for transmitting data in a multi-band transmission manner based on the interference information; the frequency band information is provided to the communication device by a transmitter.
Further, the multiband transmission scheme includes: frequency hopping transmission mode and/or concurrent transmission mode.
Further, the processor is further configured to: and under the condition that the multi-band transmission mode comprises a frequency hopping transmission mode, generating frequency band information containing a frequency hopping sequence for transmitting data according to the frequency hopping transmission mode based on the interference information, wherein the frequency bands used in different time periods in a frequency hopping cycle are recorded in the frequency hopping sequence.
Further, the processor is further configured to: and under the condition that the multi-band transmission mode comprises a concurrent transmission mode, determining frequency band information containing the combination factors of the frequency bands for concurrently transmitting data according to the concurrent transmission mode based on the interference information.
In the embodiment of the invention, the base station determines the frequency band information used when the data is transmitted according to the multi-frequency band transmission mode based on the interference information of the first cell to which the communication equipment belongs, and provides the determined frequency band information for the communication equipment, and the base station and the communication equipment complete the data transmission through the frequency band information. By the embodiment, the frequency band information which can be transmitted by adopting a multi-frequency band transmission mode is determined based on the interference information corresponding to the communication equipment, and the data of the unauthorized frequency band is sent out by adopting the multi-frequency band transmission mode by using the frequency band information, so that the reliability of the data transmission of the unauthorized frequency band is ensured, the characteristic that the frequency resource of the unauthorized frequency band is rich is fully utilized, the throughput of the LTE system is improved, and the technical problem that the reliability of the data transmission of the unauthorized frequency band in the prior art is low is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of a method of data transmission according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an alternative data transmission according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an alternative data transmission according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of yet another alternative data transmission according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a base station according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, 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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
First, some terms or terms appearing in the description of the embodiments of the present invention are applicable to the following explanations:
throughput: refers to the amount of data (measured in bits, bytes, packets) successfully transmitted per unit time to a network, device, port, virtual circuit, or other facility.
Sniffer: a translation sniffer is a network analysis mode based on a passive interception principle. Using Sniffer, the state of the network, data flow conditions, and information transmitted over the network can be monitored.
Resource utilization rate: the resource utilization rate of a certain frequency band is the ratio of the resource of the certain frequency band to the resource of all frequency bands.
In accordance with an embodiment of the present invention, there is provided an embodiment of a data transmission method, it should be noted that the steps illustrated in the flowchart of the drawings may be performed in a computer system such as a set of computer executable instructions, and that while a logical order is illustrated in the flowchart, in some cases, the steps illustrated or described may be performed in an order different than that herein.
Fig. 1 is a flowchart of a data transmission method according to an embodiment of the present invention, as shown in fig. 1, the method includes the following steps:
step S102: the method comprises the steps of obtaining interference information of a first cell to which communication equipment belongs.
Step S104: frequency band information for transmitting data in a multi-band transmission manner is determined based on the interference information.
Step S106: the frequency band information is provided to the communication device.
By adopting the embodiment of the invention, the base station determines the frequency band information used when the data is transmitted according to the multi-frequency band transmission mode based on the interference information of the first cell to which the communication equipment belongs, and provides the determined frequency band information for the communication equipment, and the base station and the communication equipment complete the data transmission through the frequency band information. By the embodiment, the frequency band information which can be transmitted by adopting a multi-frequency band transmission mode is determined based on the interference information corresponding to the communication equipment, and the data of the unauthorized frequency band is sent out by adopting the multi-frequency band transmission mode by using the frequency band information, so that the reliability of the data transmission of the unauthorized frequency band is ensured, the characteristic that the frequency resource of the unauthorized frequency band is rich is fully utilized, the throughput of the LTE system is improved, and the technical problem that the reliability of the data transmission of the unauthorized frequency band in the prior art is low is solved.
The communication device may be a mobile communication network device, and the mobile communication network device may be a mobile communication network terminal, where the terminal refers to a terminal-side product that can support a communication protocol of a land mobile communication system, such as a mobile phone, a tablet computer, and the like, and may also be a Modem module (Wireless Modem) for special communication, and the Modem module may be integrated by various types of terminal forms, such as a mobile phone, a tablet computer, a data card, and the like, to complete a communication function.
Specifically, the interference information of the first cell to which the mobile communication network device belongs is obtained through user reporting (namely, mobile communication network device reporting) or through an air interface listening (namely, base station listening), the interference information includes interference strength received by each frequency band in the cell (namely, the cell) in which the mobile communication network device is located and/or resource utilization rate of each frequency band used by an interference source cell which generates interference to the cell, frequency band information in a multi-frequency band transmission mode can be designed according to the interference information, the base station sends the frequency band information to a receiving end, namely, the mobile communication network device, so that the base station and the mobile communication network device complete data transmission through the frequency band information.
In the above embodiment of the present invention, the multiband transmission scheme includes: frequency hopping transmission mode and/or concurrent transmission mode.
Specifically, the interference strength of each frequency band in a cell (i.e., the cell) where the mobile communication network device is located and/or the resource utilization rate of each frequency band used by an interference source cell which generates interference to the cell can be obtained through reporting by the mobile communication network device or through a base station interception mode; and the base station sends the frequency hopping sequence and/or the combination factor to a receiving end, namely to the mobile communication network equipment, so that the base station and the mobile communication network equipment complete data transmission through the frequency band information.
Further, the method for the base station and the mobile communication network to complete data transmission may include the following three methods: firstly, a frequency hopping sequence is only adopted to complete a frequency hopping transmission mode, namely, a frequency hopping transmission mode is adopted; secondly, a concurrent transmission mode is adopted only by adopting a combination factor, namely the concurrent transmission mode is adopted; and thirdly, combining a frequency hopping transmission mode and a concurrent transmission mode.
Through the embodiment, three data transmission modes are limited, and any one mode can be adopted to achieve the purposes of sending the data of the unauthorized frequency band and improving the reliability of data transmission of the unauthorized frequency band.
In the above embodiment of the present invention, when the multiband transmission scheme includes a frequency hopping transmission scheme, determining band information used for transmitting data in the multiband transmission scheme based on the interference information includes: and generating frequency band information containing a frequency hopping sequence for transmitting data according to a frequency hopping transmission mode based on the interference information, wherein the frequency bands used in different time periods in a frequency hopping cycle are recorded in the frequency hopping sequence.
Further, generating frequency band information containing a frequency hopping sequence for transmitting data in a frequency hopping transmission manner based on the interference information includes: generating a frequency hopping sequence according to the interference intensity of each frequency band of the first cell recorded in the interference information, wherein the proportion of each frequency band in the frequency hopping sequence is in inverse proportion relation with the interference intensity of each frequency band; and/or generating a frequency hopping sequence according to the resource utilization rate of each frequency band used by the second cell recorded in the interference information, wherein the proportion of each frequency band in the frequency hopping sequence has an inverse proportion relation with the resource utilization rate of each frequency band, the second cell is a cell which generates interference on the first cell, and the second cell is not limited to one cell which generates interference because a plurality of cells which generate interference on the first cell may be provided.
Further, a frequency hopping sequence is generated according to the interference intensity of each frequency band of the first cell recorded in the interference information, wherein the proportion of each frequency band in the frequency hopping sequence appearing is in inverse proportion relation to the interference intensity of each frequency band, that is, the larger the interference intensity of each frequency band is, the smaller the proportion of each frequency band appearing in the corresponding frequency hopping sequence is, for example, when the interference intensity of the first frequency band is greater than the interference intensity of the second frequency band, the proportion of the first frequency band appearing in the frequency hopping sequence is smaller than the proportion of the second frequency band appearing; and/or generating a frequency hopping sequence according to the resource utilization rate of each frequency band used by the second cell recorded in the interference information, wherein the proportion of each frequency band in the frequency hopping sequence is inversely proportional to the resource utilization rate of each frequency band, that is, the higher the resource utilization rate of each frequency band is, the smaller the proportion of each frequency band in the corresponding frequency hopping sequence is, for example, when the resource utilization rate of the first frequency band is higher than the resource utilization rate of the second frequency band, the proportion of the first frequency band in the frequency hopping sequence is smaller than the proportion of the second frequency band, and the second cell is a cell which generates interference to the first cell.
The interference strength of each frequency band of the first cell may be the interference strength of each frequency band in the local cell where the mobile communication network device is located; the resource utilization rate of each frequency band used by the second cell may be the resource utilization rate of each frequency band used by an interference source cell which generates interference to the cell.
Specifically, according to the interference strength of each frequency band in the cell and/or the resource utilization rate of each frequency band used by the interference source cell, the base station randomly generates a frequency hopping sequence used when transmitting data according to a frequency hopping transmission mode, the generated frequency hopping sequence is periodic, and one frequency hopping period includes frequency band resource information used in different time periods. In a frequency hopping period, the ratio of different frequency bands is related to the interference strength of each frequency band in the cell and/or the resource utilization rate of each frequency band used by the interference source cell. Under the condition that the occurrence proportion of different frequency bands is determined by using the interference strength of each frequency band in the cell, for a certain frequency band resource with small interference, the occurrence proportion in a frequency hopping cycle is large, namely, the frequency hopping proportion of the frequency band is large, and for a certain frequency band resource with large interference, the occurrence proportion in the frequency hopping cycle is small, namely, the frequency hopping proportion of the frequency band is small; if the interference source cell is used to determine the proportion of different frequency bands by using the resource utilization rate of each frequency band, under the condition that the resource utilization rate of the interference source cell to a certain frequency band is high, the proportion of the frequency band occurring in a frequency hopping period is small, namely, the frequency hopping proportion of the frequency band is correspondingly small, and under the condition that the resource utilization rate of the interference source cell to a certain frequency band is low, the proportion of the frequency band occurring in the frequency hopping period is large, namely, the frequency hopping proportion of the frequency band is correspondingly large.
The above-described embodiment of the present invention is described in detail below with reference to fig. 2. As shown in fig. 2, the frequency band resource information used in different time periods included in one frequency hopping period includes: { T1, F1}, { T2, F2}, { T3, F3}, { T4, F4}, { T5, F1}, { T6, F3}, { T7, F2}, and { T8, F3}, that is, in this embodiment, 8 slots and 4 band resources are included, where Ti denotes the i-th slot in one hop period, Fn denotes the band used in the i-th slot, and i is 1,2,3, … 8, and n is 1,2,3, 4.
Analyzing fig. 2, assuming that the occurrence ratio of different frequency bands in a frequency hopping period is determined according to the magnitude of interference strength received by each frequency band in the cell, as shown in fig. 2, the interference strength received by the F4 frequency band is the largest, the frequency hopping ratio is the smallest, the interference strength received by the F3 frequency band is the smallest, the frequency hopping ratio is the largest, the interference strength received by the F1 frequency band and the F2 frequency band are the middle, and the frequency hopping ratio is between the F3 frequency band and the F4 frequency band.
It should be noted that, in the scheme of the foregoing embodiment, the frequency hopping period may include a number of frequency band resource information used in different time periods, and the number of the frequency band resource information may be any number.
By the embodiment, the frequency hopping transmission between the base station and the mobile communication network equipment can be completed based on the generated frequency hopping sequence, so that the data of the unauthorized frequency band is sent out in a frequency hopping transmission mode, and the purpose of fully utilizing the frequency resources of the unauthorized frequency band is achieved.
In the above embodiment of the present invention, when the multiband transmission scheme includes a concurrent transmission scheme, determining band information used for transmitting data in the multiband transmission scheme based on the interference information includes: and determining frequency band information containing the combination factors of the frequency bands for the concurrent transmission of the data in the concurrent transmission mode based on the interference information.
Further, determining frequency band information including a combining factor of each frequency band for concurrently transmitting data in a concurrent transmission manner based on the interference information includes: determining a combination factor of each frequency band according to the interference intensity of each frequency band of the first cell recorded in the interference information, wherein the combination factor of each frequency band has an inverse proportional relation with the interference intensity of each frequency band; and/or determining a combination factor of each frequency band according to the resource utilization rate of each frequency band used by a second cell recorded in the interference information, wherein the combination factor of each frequency band has an inverse proportional relation with the resource utilization rate of each frequency band, and the second cell is a cell generating interference on the first cell.
Further, determining a combining factor of each frequency band according to the interference strength of each frequency band of the first cell recorded in the interference information, where the combining factor of each frequency band has an inverse proportional relationship with the interference strength of each frequency band, that is, the greater the interference strength of each frequency band, the smaller the combining factor of each corresponding frequency band is, for example, when the interference strength of the first frequency band is greater than the interference strength of the second frequency band, the combining factor of the first frequency band is smaller than the combining factor of the second frequency band; and/or determining a combination factor of each frequency band according to the resource utilization rate of each frequency band used by the second cell recorded in the interference information, wherein the combination factor of each frequency band has an inverse proportional relationship with the resource utilization rate of each frequency band, that is, the higher the resource utilization rate of each frequency band is, the smaller the combination factor corresponding to each frequency band is, for example, when the resource utilization rate of the first frequency band is greater than the resource utilization rate of the second frequency band, the combination factor of the first frequency band is smaller than the combination factor of the second frequency band, and the second cell is a cell which generates interference to the first cell.
The concurrent transmission refers to concurrent transmission of data on multiple frequency bands at the same time.
Specifically, in order to fully combine data transmitted in multiple frequency bands, a combining factor of each frequency band for concurrently transmitting data at the same time is determined according to the interference strength received by each frequency band in the cell and/or the resource utilization rate of each frequency band used by the interference source cell when the data is transmitted in a concurrent transmission manner. Under the condition that the combination factor of each frequency band is determined by using the interference strength of each frequency band in the cell, the combination factor corresponding to the frequency band is large for a certain frequency band resource with small interference, and the combination factor corresponding to the frequency band is small for a certain frequency band resource with large interference; if the combination factor of each frequency band is determined by using the resource utilization rate of each frequency band by the interference source cell, the combination factor corresponding to the frequency band is small under the condition that the resource utilization rate of the interference source cell to a certain frequency band is high, and the combination factor corresponding to the frequency band is large under the condition that the resource utilization rate of the interference source cell to a certain frequency band is low.
The above-described embodiment of the present invention is described in detail below with reference to fig. 3. As shown in fig. 3, at time T1, data is put on four frequency bands of F1, F2, F3 and F4 for parallel transmission. When a user terminal (i.e., a mobile communication network device) receives data of an F1 frequency band, data of an F2 frequency band, data of an F3 frequency band, and data of an F4 frequency band, it is assumed that combining factors corresponding to four frequency bands are determined according to Interference strength received by each frequency band in a cell, if Interference strength received by an F1 frequency band is minimum, SINR1(Signal to Interference plus Noise Ratio, which is an abbreviation of Signal to Interference plus Noise Ratio) is maximum, Interference strength received by an F2 frequency band is maximum, SINR2 is minimum, Interference strength received by an F3 frequency band and an F4 frequency band is between the F1 frequency band and the F2 frequency band, which may be SINR1> SINR2> SINR3> SINR4, i.e., corresponding combining factor a1> a2> a3> a 4. When the user terminal receives and combines the data x, a1 x + a2 x + a3 x + a4 x is used to obtain a combined gain.
Through the embodiment, the greater weighting factor is given to the frequency band with good channel quality and low interference intensity, so that the transmission quality of the data transmitted by adopting a concurrent transmission mode is ensured.
In the above embodiment of the present invention, determining frequency band information for transmitting data in a multiband transmission scheme based on the interference information includes: a plurality of frequency bands for transmitting data are determined, and time-frequency resources for transmitting data in each frequency band are determined.
Further, determining the time-frequency resources for transmitting data in each frequency band includes any one of: acquiring a time-frequency resource appointed in the indication information; under the condition that the channel quality of a first time-frequency resource in a frequency band is higher than that of a second time-frequency resource, selecting the first time-frequency resource as a time-frequency resource for transmitting data; and randomly selecting time-frequency resources for transmitting data in the frequency band.
Specifically, when data is transmitted by using a frequency hopping transmission method, according to the interference intensity received by each frequency band in the cell and/or the resource utilization rate of each frequency band used by the interference source cell, the base station randomly generates frequency band resource information used in different time periods included in one frequency hopping period. When the concurrent transmission mode is adopted to transmit data, the combination factor of each frequency band for concurrently transmitting the data at the same time is determined according to the interference intensity received by each frequency band in the cell and/or the resource utilization rate of each frequency band used by the interference source cell, and the data is concurrently transmitted on each frequency band.
It should be noted that, the data is transmitted by using a frequency hopping transmission method, or by using a concurrent transmission method, or by using a combination of the two transmission methods, the time-frequency resource for transmitting data in each frequency band may be determined by using any one of the following methods: first, the time-frequency resources specified in the indication information, that is, the time-frequency resources within each frequency band specified in the indication information are used for transmitting data (as shown in fig. 2 and 3, data is transmitted on the specified time-frequency resources of each frequency band);
secondly, under the condition that the channel quality of the first time-frequency resource in each frequency band is higher than that of the second time-frequency resource, the first time-frequency resource is selected as the time-frequency resource for transmitting data. That is, the base station may select the time-frequency resources with good channel quality in each frequency band for transmission according to the channel quality information fed back by the user terminal, and the selected time-frequency resources in each frequency band may be the same or different; (this embodiment is one of the preferred embodiments)
Thirdly, randomly selecting time-frequency resources for transmitting data in each frequency band. The random selection may be implemented by setting a random variation formula, for example, assuming that the a band has a bandwidth of 20MHz, and total 100 RBs (Resource blocks, which is an abbreviation), resources allocated to a certain ue are 10 th RB to 15 th RB. When the frequency band B is randomly changed, a random number x is generated, so that the frequency resource on the frequency band B is the RB resource position which is obtained by taking the balance of 10+ x to 100 to the RB resource position which is obtained by taking the balance of 15+ x to 100. If, in the frequency hopping transmission mode, the time-frequency resources for data transmission in each frequency band are randomly selected by setting a random variation formula, as described in detail with reference to fig. 4, assuming that the resources allocated to a certain user terminal by the F1 frequency band are from the 50 th RB to the 60 th RB, the random variation is performed in the F2 frequency band, so that the resources allocated to the user terminal by the F2 frequency band are from the 20 th RB to the 30 th RB, and similarly, the resources allocated to the user terminal by the F3 frequency band are from the 70 th RB to the 80 th RB, so that the resources allocated to the user terminal by the F4 frequency band are from the 30 th RB to the 40 th RB, thereby implementing frequency hopping transmission in different frequency bands. In the concurrent transmission mode, the scheme of randomly selecting the time-frequency resource for transmitting data in each frequency band by setting a random variation formula is similar, and is not described herein again. (this embodiment is the second preferred embodiment)
Through the embodiment, the purpose of fully utilizing the frequency resource selectivity is achieved by distributing specific time-frequency resource information to the data in different frequency bands.
In the above embodiment of the present invention, the obtaining interference information of the first cell to which the communication device belongs includes: monitoring interference information of a first cell through a listener; and/or acquiring interference information of the first cell reported by the communication equipment, wherein the interference information comprises interference intensity of each frequency band in the first cell, and/or resource utilization rate of each frequency band used by a second cell which generates interference to the first cell.
Optionally, the interference information of the first cell to which the mobile communication network device belongs is obtained through an air interface listening (i.e., base station listening) or a user reporting (i.e., mobile communication network device reporting). The method comprises the following specific steps:
air interface interception: the LTE base station is usually equipped with Sniffer, which can be used to monitor the interference strength received by different frequency bands in the local cell where the mobile communication network device is located, and after a certain frequency band is continuously monitored for a period of time, can obtain the resource utilization rate of the frequency band used by the interference source cell which generates interference to the local cell.
Reporting by a user: the user terminal is provided with a receiver, and the interference intensity of a plurality of frequency bands in the cell and the resource utilization rate of each frequency band used by the interference source cell can be obtained by receiving and analyzing the external signal through the receiver.
It should be noted that the interference strength of each frequency band in the first cell may be the interference strength of each frequency band in the cell where the mobile communication network device is located; the resource utilization rate of each frequency band used by the second cell may be the resource utilization rate of each frequency band used by the interference source cell which generates interference to the cell, and the number of the interference source cells which generate interference to the cell may be one or multiple, that is, one or multiple second cells may be provided.
Optionally, the Interference Strength is measured by a CSI-IM (Channel State Information-Interference Measurement) reference Signal, or is characterized by an rssi (received Signal Strength indicator) measured by an rrm (radio Resource Measurement).
In the above embodiment, the interference strength of each frequency band of the cell and/or the resource utilization rate of each frequency band used by the interference source cell may be obtained through the base station or the mobile communication network device.
In the above embodiments of the present invention, providing the frequency band information to the communication device includes one of: responding to the request information of the user, and sending the frequency band information to the communication equipment; sending the frequency band information to the communication equipment through a designated channel; the frequency band information is broadcast through a broadcast channel.
Specifically, in the case of transmitting data by using a frequency hopping transmission method, the frequency band information may be provided to the communication device by any one of the following methods: first, when a user terminal (i.e. the communication device, i.e. the mobile communication network device) sends a request message to a base station to request a plurality of frequency hopping sequences required for data transmission, the base station sends the plurality of frequency hopping sequence messages to the communication device according to the request message; secondly, the base station does not need to wait for the request information of the user terminal, and can directly send the frequency hopping sequence information to the user terminal through a designated channel (such as a control channel or an RRC signaling channel); thirdly, the base station can directly broadcast the frequency hopping sequence information through a broadcast channel, so that the frequency hopping sequences at the receiving end and the transmitting end, namely the base station and the user terminal, are synchronous.
The above-mentioned RRC is an abbreviation of Radio Resource Control.
Specifically, in the case of transmitting data by using a concurrent transmission method, the frequency band information may be provided to the communication device by any one of the following methods: first, when a user terminal (i.e. the communication device, i.e. the mobile communication network device) sends a request message to a base station, and requests for a combination factor of each frequency band corresponding to data transmission, the base station sends the combination factor of each frequency band to the communication device according to the request message; secondly, the base station does not need to wait for the request information of the user terminal, and can directly send the combining factors of each frequency band to the user terminal through a designated channel (such as a control channel or an RRC signaling channel); thirdly, the base station can directly broadcast the combining factors of each frequency band through a broadcast channel, so that the combining factors at the receiving end and the transmitting end, namely the base station and the user terminal end are synchronous.
Through the embodiment, the base station provides the frequency band information (including the frequency hopping sequence and the combination factor) to the user terminal so as to realize the synchronization of the frequency band information at the two ends of the base station and the user terminal, thereby ensuring the reliability of data transmission.
It should be noted that the frequency hopping transmission mode and the concurrent transmission mode in the present invention can be combined together to complete the data transmission. For example, the data is concurrently transmitted in the F1 frequency band and the F2 frequency band in the T1 time period, the data is concurrently transmitted in the F3 frequency band and the F4 frequency band in the T2 time period, and the data is frequency-hopping transmitted in the T1 time period and the T2 time period at two different times.
In the above embodiment, the mobile communication network device monitors interference conditions of different frequency bands and/or resource utilization rates of interfering cells; designing a frequency hopping sequence to complete frequency hopping transmission or designing a combination factor to carry out combined transmission according to the interference situation and/or the resource utilization rate of the interference cell; and sending the frequency hopping sequence and/or the combination factor to a receiving end for the receiving end to receive data and finish transmission. By the embodiment, the frequency band information which can be transmitted by adopting a multi-frequency band transmission mode is determined based on the interference information corresponding to the communication equipment, and the data of the unauthorized frequency band is sent out by adopting the multi-frequency band transmission mode by using the frequency band information, so that the reliability of the data transmission of the unauthorized frequency band is ensured, the characteristic that the frequency resource of the unauthorized frequency band is rich is fully utilized, the throughput of the LTE system is improved, and the technical problem that the reliability of the data transmission of the unauthorized frequency band in the prior art is low is solved.
It should be noted that, the transceiving data in the present invention is referred to as a general term, and specific transmission information, such as control information, data information or reference signal, is not limited to be included in the scope of the present invention.
Fig. 5 is a schematic structural diagram of a base station according to an embodiment of the present invention, and as shown in fig. 5, the base station may include: an acquisition unit 51, a determination unit 53, and a providing unit 55.
The obtaining unit 51 is configured to obtain interference information of a first cell to which the communication device belongs.
A determining unit 53, configured to determine frequency band information for transmitting data in a multi-band transmission manner based on the interference information.
A providing unit 55 is used for providing the frequency band information to the communication equipment.
By adopting the embodiment of the invention, the base station determines the frequency band information used when the data is transmitted according to the multi-frequency band transmission mode based on the interference information of the first cell to which the communication equipment belongs, and provides the determined frequency band information for the communication equipment, and the base station and the communication equipment complete the data transmission through the frequency band information. By the embodiment, the frequency band information which can be transmitted by adopting a multi-frequency band transmission mode is determined based on the interference information corresponding to the communication equipment, and the data of the unauthorized frequency band is sent out by adopting the multi-frequency band transmission mode by using the frequency band information, so that the reliability of the data transmission of the unauthorized frequency band is ensured, the characteristic that the frequency resource of the unauthorized frequency band is rich is fully utilized, the throughput of the LTE system is improved, and the technical problem that the reliability of the data transmission of the unauthorized frequency band in the prior art is low is solved.
The communication device may be a mobile communication network device, and the mobile communication network device may be a mobile communication network terminal, where the terminal refers to a terminal-side product that can support a communication protocol of a land mobile communication system, such as a mobile phone, a tablet computer, and the like, and may also be a Modem module (Wireless Modem) for special communication, and the Modem module may be integrated by various types of terminal forms, such as a mobile phone, a tablet computer, a data card, and the like, to complete a communication function.
Specifically, the interference information of the first cell to which the mobile communication network device belongs is obtained through user reporting (namely, mobile communication network device reporting) or through an air interface listening (namely, base station listening), the interference information includes interference strength received by each frequency band in the cell (namely, the cell) in which the mobile communication network device is located and/or resource utilization rate of each frequency band used by an interference source cell which generates interference to the cell, frequency band information in a multi-frequency band transmission mode can be designed according to the interference information, the base station sends the frequency band information to a receiving end, namely, the mobile communication network device, so that the base station and the mobile communication network device complete data transmission through the frequency band information.
In the above embodiment of the present invention, the multiband transmission scheme includes: frequency hopping transmission mode and/or concurrent transmission mode.
Specifically, the interference strength of each frequency band in a cell (i.e., the cell) where the mobile communication network device is located and/or the resource utilization rate of each frequency band used by an interference source cell which generates interference to the cell can be obtained through reporting by the mobile communication network device or through a base station interception mode; and the base station sends the frequency hopping sequence and/or the combination factor to a receiving end, namely to the mobile communication network equipment, so that the base station and the mobile communication network equipment complete data transmission through the frequency band information.
Further, the method for the base station and the mobile communication network to complete data transmission may include the following three methods: firstly, a frequency hopping sequence is only adopted to complete a frequency hopping transmission mode, namely, a frequency hopping transmission mode is adopted; secondly, a concurrent transmission mode is adopted only by adopting a combination factor, namely the concurrent transmission mode is adopted; and thirdly, combining a frequency hopping transmission mode and a concurrent transmission mode.
Through the embodiment, three data transmission modes are limited, and any one mode can be adopted to achieve the purposes of sending the data of the unauthorized frequency band and improving the reliability of data transmission of the unauthorized frequency band.
In the above embodiments of the present invention, the determination unit includes: and the generating module is used for generating frequency band information containing a frequency hopping sequence used for transmitting data according to the frequency hopping transmission mode based on the interference information under the condition that the multi-band transmission mode comprises the frequency hopping transmission mode, wherein the frequency bands used in different time periods in a frequency hopping cycle are recorded in the frequency hopping sequence.
Further, the generation module includes: the first generation submodule is used for generating a frequency hopping sequence according to the interference intensity of each frequency band of the first cell recorded in the interference information, wherein the proportion of each frequency band in the frequency hopping sequence is in inverse proportion relation with the interference intensity of each frequency band; and/or a second generation submodule, configured to generate a frequency hopping sequence according to resource usage rates of the frequency bands used by a second cell recorded in the interference information, where a ratio of occurrence of each frequency band in the frequency hopping sequence has an inverse proportional relationship with the resource usage rates of the frequency bands, where the second cell is a cell that interferes with the first cell, and the second cell is not limited to one cell that interferes with the first cell because there may be a plurality of cells that interfere with the first cell.
Further, a frequency hopping sequence is generated according to the interference intensity of each frequency band of the first cell recorded in the interference information, wherein the proportion of each frequency band in the frequency hopping sequence appearing is in inverse proportion relation to the interference intensity of each frequency band, that is, the larger the interference intensity of each frequency band is, the smaller the proportion of each frequency band appearing in the corresponding frequency hopping sequence is, for example, when the interference intensity of the first frequency band is greater than the interference intensity of the second frequency band, the proportion of the first frequency band appearing in the frequency hopping sequence is smaller than the proportion of the second frequency band appearing; and/or generating a frequency hopping sequence according to the resource utilization rate of each frequency band used by the second cell recorded in the interference information, wherein the proportion of each frequency band in the frequency hopping sequence is inversely proportional to the resource utilization rate of each frequency band, that is, the higher the resource utilization rate of each frequency band is, the smaller the proportion of each frequency band in the corresponding frequency hopping sequence is, for example, when the resource utilization rate of the first frequency band is higher than the resource utilization rate of the second frequency band, the proportion of the first frequency band in the frequency hopping sequence is smaller than the proportion of the second frequency band, and the second cell is a cell which generates interference to the first cell.
The interference strength of each frequency band of the first cell may be the interference strength of each frequency band in the local cell where the mobile communication network device is located; the resource utilization rate of each frequency band used by the second cell may be the resource utilization rate of each frequency band used by an interference source cell which generates interference to the cell.
Specifically, according to the interference strength of each frequency band in the cell and/or the resource utilization rate of each frequency band used by the interference source cell, the base station randomly generates a frequency hopping sequence used when transmitting data according to a frequency hopping transmission mode, the generated frequency hopping sequence is periodic, and one frequency hopping period includes frequency band resource information used in different time periods. In a frequency hopping period, the ratio of different frequency bands is related to the interference strength of each frequency band in the cell and/or the resource utilization rate of each frequency band used by the interference source cell. Under the condition that the occurrence proportion of different frequency bands is determined by using the interference strength of each frequency band in the cell, for a certain frequency band resource with small interference, the occurrence proportion in a frequency hopping cycle is large, namely, the frequency hopping proportion of the frequency band is large, and for a certain frequency band resource with large interference, the occurrence proportion in the frequency hopping cycle is small, namely, the frequency hopping proportion of the frequency band is small; if the interference source cell is used to determine the proportion of different frequency bands by using the resource utilization rate of each frequency band, under the condition that the resource utilization rate of the interference source cell to a certain frequency band is high, the proportion of the frequency band occurring in a frequency hopping period is small, namely, the frequency hopping proportion of the frequency band is correspondingly small, and under the condition that the resource utilization rate of the interference source cell to a certain frequency band is low, the proportion of the frequency band occurring in the frequency hopping period is large, namely, the frequency hopping proportion of the frequency band is correspondingly large.
It should be noted that, in the scheme of the foregoing embodiment, the frequency hopping period may include a number of frequency band resource information used in different time periods, and the number of the frequency band resource information may be any number.
By the embodiment, the frequency hopping transmission between the base station and the mobile communication network equipment can be completed based on the generated frequency hopping sequence, so that the data of the unauthorized frequency band is sent out in a frequency hopping transmission mode, and the purpose of fully utilizing the frequency resources of the unauthorized frequency band is achieved.
In the above embodiments of the present invention, the determination unit includes: and the determining module is used for determining frequency band information which is used for concurrently transmitting data according to the concurrent transmission mode and contains the merging factors of all the frequency bands based on the interference information under the condition that the multi-frequency band transmission mode comprises the concurrent transmission mode.
Further, the determining module includes: the first determining submodule is used for determining the combining factor of each frequency band according to the interference intensity of each frequency band of the first cell recorded in the interference information, wherein the combining factor of each frequency band and the interference intensity of each frequency band have an inverse proportional relation; and/or a second determining submodule, configured to determine a combining factor of each frequency band according to the resource usage rate of each frequency band used by the second cell recorded in the interference information, where the combining factor of each frequency band has an inverse proportional relationship with the resource usage rate of each frequency band, and the second cell is a cell that generates interference with the first cell.
Further, determining a combining factor of each frequency band according to the interference strength of each frequency band of the first cell recorded in the interference information, where the combining factor of each frequency band has an inverse proportional relationship with the interference strength of each frequency band, that is, the greater the interference strength of each frequency band, the smaller the combining factor of each corresponding frequency band is, for example, when the interference strength of the first frequency band is greater than the interference strength of the second frequency band, the combining factor of the first frequency band is smaller than the combining factor of the second frequency band; and/or determining a combination factor of each frequency band according to the resource utilization rate of each frequency band used by the second cell recorded in the interference information, wherein the combination factor of each frequency band has an inverse proportional relationship with the resource utilization rate of each frequency band, that is, the higher the resource utilization rate of each frequency band is, the smaller the combination factor corresponding to each frequency band is, for example, when the resource utilization rate of the first frequency band is greater than the resource utilization rate of the second frequency band, the combination factor of the first frequency band is smaller than the combination factor of the second frequency band, and the second cell is a cell which generates interference to the first cell.
The concurrent transmission refers to concurrent transmission of data on multiple frequency bands at the same time.
Specifically, in order to fully combine data transmitted in multiple frequency bands, a combining factor of each frequency band for concurrently transmitting data at the same time is determined according to the interference strength received by each frequency band in the cell and/or the resource utilization rate of each frequency band used by the interference source cell when the data is transmitted in a concurrent transmission manner. Under the condition that the combination factor of each frequency band is determined by using the interference strength of each frequency band in the cell, the combination factor corresponding to the frequency band is large for a certain frequency band resource with small interference, and the combination factor corresponding to the frequency band is small for a certain frequency band resource with large interference; if the combination factor of each frequency band is determined by using the resource utilization rate of each frequency band by the interference source cell, the combination factor corresponding to the frequency band is small under the condition that the resource utilization rate of the interference source cell to a certain frequency band is high, and the combination factor corresponding to the frequency band is large under the condition that the resource utilization rate of the interference source cell to a certain frequency band is low.
Through the embodiment, the greater weighting factor is given to the frequency band with good channel quality and low interference intensity, so that the transmission quality of the data transmitted by adopting a concurrent transmission mode is ensured.
In the above embodiments of the present invention, the determination unit includes: and the processing module is used for determining a plurality of frequency bands for transmitting data and determining time-frequency resources for transmitting data in each frequency band.
Further, the processing module comprises any one of: the acquisition submodule is used for acquiring the time-frequency resource appointed in the indication information; the selecting submodule is used for selecting the first time-frequency resource as the time-frequency resource for transmitting data under the condition that the channel quality of the first time-frequency resource in the frequency band is higher than that of the second time-frequency resource; and the random selection submodule is used for randomly selecting time-frequency resources for transmitting data in the frequency band.
Specifically, when data is transmitted by using a frequency hopping transmission method, according to the interference intensity received by each frequency band in the cell and/or the resource utilization rate of each frequency band used by the interference source cell, the base station randomly generates frequency band resource information used in different time periods included in one frequency hopping period. When the concurrent transmission mode is adopted to transmit data, the combination factor of each frequency band for concurrently transmitting the data at the same time is determined according to the interference intensity received by each frequency band in the cell and/or the resource utilization rate of each frequency band used by the interference source cell, and the data is concurrently transmitted on each frequency band.
It should be noted that, the data is transmitted by using a frequency hopping transmission method, or by using a concurrent transmission method, or by using a combination of the two transmission methods, the time-frequency resource for transmitting data in each frequency band may be determined by using any one of the following methods: first, the time-frequency resources specified in the indication information, that is, the time-frequency resources within each frequency band specified in the indication information are used for transmitting data (as shown in fig. 2 and 3, data is transmitted on the specified time-frequency resources of each frequency band);
secondly, under the condition that the channel quality of the first time-frequency resource in each frequency band is higher than that of the second time-frequency resource, the first time-frequency resource is selected as the time-frequency resource for transmitting data. That is, the base station may select the time-frequency resources with good channel quality in each frequency band for transmission according to the channel quality information fed back by the user terminal, and the selected time-frequency resources in each frequency band may be the same or different; (this embodiment is one of the preferred embodiments)
Thirdly, randomly selecting time-frequency resources for transmitting data in each frequency band. The random selection may be implemented by setting a random variation formula, for example, assuming that the a band has a bandwidth of 20MHz, and total 100 RBs (Resource blocks, which is an abbreviation), resources allocated to a certain ue are 10 th RB to 15 th RB. When the frequency band B is randomly changed, a random number x is generated, so that the frequency resource on the frequency band B is the RB resource position which is obtained by taking the balance of 10+ x to 100 to the RB resource position which is obtained by taking the balance of 15+ x to 100. If, in the frequency hopping transmission mode, the time-frequency resources for data transmission in each frequency band are randomly selected by setting a random variation formula, as described in detail with reference to fig. 4, assuming that the resources allocated to a certain user terminal by the F1 frequency band are from the 50 th RB to the 60 th RB, the random variation is performed in the F2 frequency band, so that the resources allocated to the user terminal by the F2 frequency band are from the 20 th RB to the 30 th RB, and similarly, the resources allocated to the user terminal by the F3 frequency band are from the 70 th RB to the 80 th RB, so that the resources allocated to the user terminal by the F4 frequency band are from the 30 th RB to the 40 th RB, thereby implementing frequency hopping transmission in different frequency bands. In the concurrent transmission mode, the scheme of randomly selecting the time-frequency resource for transmitting data in each frequency band by setting a random variation formula is similar, and is not described herein again. (this embodiment is the second preferred embodiment)
Through the embodiment, the purpose of fully utilizing the frequency resource selectivity is achieved by distributing specific time-frequency resource information to the data in different frequency bands.
In the above embodiment of the present invention, the obtaining unit includes: the monitoring module is used for monitoring the interference information of the first cell through the monitor; and/or an obtaining module, configured to obtain interference information of the first cell, where the interference information includes interference strength of each frequency band in the first cell, and/or a resource utilization rate of each frequency band used by a second cell that generates interference with the first cell.
Optionally, the interference information of the first cell to which the mobile communication network device belongs is obtained through an air interface listening (i.e., base station listening) or a user reporting (i.e., mobile communication network device reporting). The method comprises the following specific steps:
air interface interception: the LTE base station is usually equipped with Sniffer, which can be used to monitor the interference strength received by different frequency bands in the local cell where the mobile communication network device is located, and after a certain frequency band is continuously monitored for a period of time, can obtain the resource utilization rate of the frequency band used by the interference source cell which generates interference to the local cell.
Reporting by a user: the user terminal is provided with a receiver, and the interference intensity of a plurality of frequency bands in the cell and the resource utilization rate of each frequency band used by the interference source cell can be obtained by receiving and analyzing the external signal through the receiver.
It should be noted that the interference strength of each frequency band in the first cell may be the interference strength of each frequency band in the cell where the mobile communication network device is located; the resource utilization rate of each frequency band used by the second cell may be the resource utilization rate of each frequency band used by the interference source cell which generates interference to the cell, and the number of the interference source cells which generate interference to the cell may be one or multiple, that is, one or multiple second cells may be provided.
Optionally, the Interference Strength is measured by a CSI-IM (Channel State Information-Interference Measurement) reference Signal, or is characterized by an rssi (received Signal Strength indicator) measured by an rrm (radio Resource Measurement).
In the above embodiment, the interference strength of each frequency band of the cell and/or the resource utilization rate of each frequency band used by the interference source cell may be obtained through the base station or the mobile communication network device.
In the above embodiment of the present invention, the providing unit includes one of: the response module is used for responding to the request information of the user and sending the frequency band information to the communication equipment; the transmitting module is used for transmitting the frequency band information to the communication equipment through the designated channel; and the broadcasting module is used for broadcasting the frequency band information through a broadcasting channel.
Specifically, in the case of transmitting data by using a frequency hopping transmission method, the frequency band information may be provided to the communication device by any one of the following methods: first, when a user terminal (i.e. the communication device, i.e. the mobile communication network device) sends a request message to a base station to request a plurality of frequency hopping sequences required for data transmission, the base station sends the plurality of frequency hopping sequence messages to the communication device according to the request message; secondly, the base station does not need to wait for the request information of the user terminal, and can directly send the frequency hopping sequence information to the user terminal through a designated channel (such as a control channel or an RRC signaling channel); thirdly, the base station can directly broadcast the frequency hopping sequence information through a broadcast channel, so that the frequency hopping sequences at the receiving end and the transmitting end, namely the base station and the user terminal, are synchronous.
The above-mentioned RRC is an abbreviation of Radio Resource Control.
Specifically, in the case of transmitting data by using a concurrent transmission method, the frequency band information may be provided to the communication device by any one of the following methods: first, when a user terminal (i.e. the communication device, i.e. the mobile communication network device) sends a request message to a base station, and requests for a combination factor of each frequency band corresponding to data transmission, the base station sends the combination factor of each frequency band to the communication device according to the request message; secondly, the base station does not need to wait for the request information of the user terminal, and can directly send the combining factors of each frequency band to the user terminal through a designated channel (such as a control channel or an RRC signaling channel); thirdly, the base station can directly broadcast the combining factors of each frequency band through a broadcast channel, so that the combining factors at the receiving end and the transmitting end, namely the base station and the user terminal end are synchronous.
Through the embodiment, the base station provides the frequency band information (including the frequency hopping sequence and the combination factor) to the user terminal so as to realize the synchronization of the frequency band information at the two ends of the base station and the user terminal, thereby ensuring the reliability of data transmission.
It should be noted that the frequency hopping transmission mode and the concurrent transmission mode in the present invention can be combined together to complete the data transmission. For example, the data is concurrently transmitted in the F1 frequency band and the F2 frequency band in the T1 time period, the data is concurrently transmitted in the F3 frequency band and the F4 frequency band in the T2 time period, and the data is frequency-hopping transmitted in the T1 time period and the T2 time period at two different times.
By the embodiment of the invention, the frequency band information which can be transmitted by adopting a multi-frequency band transmission mode is determined based on the interference information corresponding to the communication equipment, and the data of the unauthorized frequency band is transmitted by adopting the multi-frequency band transmission mode by using the frequency band information so as to ensure the reliability of the data transmission of the unauthorized frequency band, thereby fully utilizing the characteristic of rich frequency resources of the unauthorized frequency band, improving the throughput of an LTE system and solving the technical problem of low reliability of the data transmission of the unauthorized frequency band in the prior art.
There is also provided, in accordance with an embodiment of the present invention, an embodiment of a base station, which includes a transmitter, a receiver, a memory, and a processor coupled to the memory.
Wherein the transmitter, the receiver, the memory and the processor communicate via a bus system; the memory stores a software program; the processor is operable by running the software program to: acquiring interference information of a first cell to which communication equipment belongs through a receiver; determining frequency band information for transmitting data in a multi-band transmission manner based on the interference information; the frequency band information is provided to the communication device by a transmitter.
By adopting the embodiment of the invention, the base station determines the frequency band information used when the data is transmitted according to the multi-frequency band transmission mode based on the interference information of the first cell to which the communication equipment belongs, and provides the determined frequency band information for the communication equipment, and the base station and the communication equipment complete the data transmission through the frequency band information. By the embodiment, the frequency band information which can be transmitted by adopting a multi-frequency band transmission mode is determined based on the interference information corresponding to the communication equipment, and the data of the unauthorized frequency band is sent out by adopting the multi-frequency band transmission mode by using the frequency band information, so that the reliability of the data transmission of the unauthorized frequency band is ensured, the characteristic that the frequency resource of the unauthorized frequency band is rich is fully utilized, the throughput of the LTE system is improved, and the technical problem that the reliability of the data transmission of the unauthorized frequency band in the prior art is low is solved.
Further, the multiband transmission scheme includes: frequency hopping transmission mode and/or concurrent transmission mode.
Further, the processor is further configured to: and under the condition that the multi-band transmission mode comprises a frequency hopping transmission mode, generating frequency band information containing a frequency hopping sequence for transmitting data according to the frequency hopping transmission mode based on the interference information, wherein the frequency bands used in different time periods in a frequency hopping cycle are recorded in the frequency hopping sequence.
Further, the processor is further configured to: and under the condition that the multi-band transmission mode comprises a concurrent transmission mode, determining frequency band information containing the combination factors of the frequency bands for concurrently transmitting data according to the concurrent transmission mode based on the interference information.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present invention, it should be understood that the disclosed technical contents can be implemented in other manners. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical 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 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 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 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 Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (22)

1. A method of data transmission, comprising:
acquiring interference information of a first cell to which communication equipment belongs;
determining frequency band information for transmitting data in a multi-band transmission manner based on the interference information;
providing the frequency band information to the communication equipment;
wherein determining frequency band information for transmitting data in a multi-band transmission manner based on the interference information comprises: determining a plurality of frequency bands for transmitting data, and determining time-frequency resources for transmitting the data in each frequency band.
2. The method of claim 1, wherein the multi-band transmission scheme comprises: frequency hopping transmission mode and/or concurrent transmission mode.
3. The method of claim 2, wherein determining frequency band information for transmitting data in a multi-band transmission scheme based on the interference information comprises, in the case that the multi-band transmission scheme comprises the frequency hopping transmission scheme:
and generating frequency band information containing a frequency hopping sequence for transmitting data according to the frequency hopping transmission mode based on the interference information, wherein frequency bands used in different time periods in a frequency hopping cycle are recorded in the frequency hopping sequence.
4. The method of claim 3, wherein generating frequency band information including a frequency hopping sequence for transmitting data in the frequency hopping transmission mode based on the interference information comprises:
generating the frequency hopping sequence according to the interference intensity of each frequency band of the first cell recorded in the interference information, wherein the proportion of each frequency band in the frequency hopping sequence is in inverse proportion relation with the interference intensity of each frequency band; and/or
Generating the frequency hopping sequence according to the resource utilization rate of each frequency band used by the second cell recorded in the interference information, wherein the occurrence proportion of each frequency band in the frequency hopping sequence has an inverse proportion relation with the resource utilization rate of each frequency band,
wherein the second cell is a cell that generates interference to the first cell.
5. The method of claim 2, wherein when the multi-band transmission scheme comprises the concurrent transmission scheme, determining band information for transmitting data in the multi-band transmission scheme based on the interference information comprises:
and determining frequency band information containing the merging factors of the frequency bands for concurrently transmitting data according to the concurrent transmission mode based on the interference information.
6. The method of claim 5, wherein determining frequency band information including a combining factor of each frequency band for concurrently transmitting data in the concurrent transmission manner based on the interference information comprises:
determining a combination factor of each frequency band according to the interference intensity of each frequency band of the first cell recorded in the interference information, wherein the combination factor of each frequency band has an inverse proportional relation with the interference intensity of each frequency band; and/or
Determining a combination factor of each frequency band according to the resource utilization rate of each frequency band used by the second cell recorded in the interference information, wherein the combination factor of each frequency band has an inverse proportional relation with the resource utilization rate of each frequency band,
wherein the second cell is a cell that generates interference to the first cell.
7. The method of claim 1, wherein determining the time-frequency resources for transmitting the data in each of the frequency bands comprises any one of:
acquiring a time-frequency resource appointed in the indication information;
under the condition that the channel quality of a first time-frequency resource in the frequency band is higher than that of a second time-frequency resource, selecting the first time-frequency resource as the time-frequency resource for transmitting the data;
and randomly selecting time-frequency resources for transmitting the data in the frequency band.
8. The method according to any one of claims 1 to 6, wherein obtaining the interference information of the first cell to which the communication device belongs comprises:
monitoring interference information of the first cell through a listener; and/or
Acquiring the interference information of the first cell reported by the communication equipment,
the interference information includes interference strength of each frequency band in the first cell, and/or resource utilization rate of each frequency band used by a second cell which generates interference to the first cell.
9. The method of any of claims 1 to 6, wherein providing the frequency band information to the communication device comprises one of:
responding to the request information of the user, and sending the frequency band information to the communication equipment;
sending the frequency band information to the communication equipment through a designated channel;
and broadcasting the frequency band information through a broadcast channel.
10. A base station, comprising:
the communication equipment comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring interference information of a first cell to which the communication equipment belongs;
a determining unit configured to determine frequency band information for transmitting data in a multi-band transmission manner based on the interference information;
a providing unit, configured to provide the frequency band information to the communication device;
wherein the determination unit includes: the processing module is used for determining a plurality of frequency bands for transmitting data and determining time-frequency resources for transmitting the data in each frequency band.
11. The base station of claim 10, wherein the multi-band transmission scheme comprises: frequency hopping transmission mode and/or concurrent transmission mode.
12. The base station of claim 11, wherein the determining unit comprises:
and a generating module, configured to generate, based on the interference information, frequency band information including a frequency hopping sequence for transmitting data according to the frequency hopping transmission mode, where frequency bands used in different time periods within a frequency hopping cycle are recorded in the frequency hopping sequence, when the multi-band transmission mode includes the frequency hopping transmission mode.
13. The base station of claim 12, wherein the generating module comprises:
the first generation submodule is used for generating the frequency hopping sequence according to the interference intensity of each frequency band of the first cell recorded in the interference information, wherein the proportion of each frequency band in the frequency hopping sequence is in inverse proportion relation with the interference intensity of each frequency band; and/or
A second generation submodule, configured to generate the frequency hopping sequence according to the resource utilization rate of each frequency band used by the second cell recorded in the interference information, where a ratio of occurrence of each frequency band in the frequency hopping sequence has an inverse proportional relationship with the resource utilization rate of each frequency band,
wherein the second cell is a cell that generates interference to the first cell.
14. The base station of claim 11, wherein the determining unit comprises:
and a determining module, configured to determine, based on the interference information, frequency band information including a combining factor of each frequency band, for concurrently transmitting data according to the concurrent transmission mode, when the multi-band transmission mode includes the concurrent transmission mode.
15. The base station of claim 14, wherein the determining module comprises:
a first determining submodule, configured to determine a combining factor of each frequency band according to the interference strength of each frequency band of the first cell recorded in the interference information, where the combining factor of each frequency band and the interference strength of each frequency band have an inverse proportional relationship; and/or
A second determining submodule, configured to determine a combining factor of each frequency band according to the resource usage rate of each frequency band used by the second cell recorded in the interference information, where the combining factor of each frequency band has an inverse proportional relationship with the resource usage rate of each frequency band,
wherein the second cell is a cell that generates interference to the first cell.
16. The base station of claim 10, wherein the processing module comprises any one of:
the acquisition submodule is used for acquiring the time-frequency resource appointed in the indication information;
a selecting submodule, configured to select a first time-frequency resource in the frequency band as a time-frequency resource for transmitting the data when a channel quality of the first time-frequency resource is higher than a channel quality of a second time-frequency resource;
and the random selection submodule is used for randomly selecting the time-frequency resource for transmitting the data in the frequency band.
17. The base station according to any of claims 10 to 15, wherein the obtaining unit comprises:
the monitoring module is used for monitoring the interference information of the first cell through a monitor; and/or
An obtaining module, configured to obtain interference information of the first cell reported by the communication device,
the interference information includes interference strength of each frequency band in the first cell, and/or resource utilization rate of each frequency band used by a second cell which generates interference to the first cell.
18. The base station according to any of claims 10 to 15, wherein the providing unit comprises one of:
the response module is used for responding to the request information of the user and sending the frequency band information to the communication equipment;
the sending module is used for sending the frequency band information to the communication equipment through a specified channel;
and the broadcasting module is used for broadcasting the frequency band information through a broadcasting channel.
19. A base station, comprising:
a transmitter, a receiver, a memory, and a processor coupled to the memory, the transmitter, the receiver, the memory, and the processor communicating over a bus system;
the memory stores a software program;
the processor, by executing the software program, is to:
acquiring interference information of a first cell to which the communication equipment belongs through the receiver;
determining frequency band information for transmitting data in a multi-band transmission manner based on the interference information;
providing the frequency band information to the communication device via the transmitter;
wherein determining frequency band information for transmitting data in a multi-band transmission manner based on the interference information comprises: determining a plurality of frequency bands for transmitting data, and determining time-frequency resources for transmitting the data in each frequency band.
20. The base station of claim 19, wherein the multi-band transmission scheme comprises: frequency hopping transmission mode and/or concurrent transmission mode.
21. The base station of claim 20, wherein the processor is further configured to: and under the condition that the multi-band transmission mode comprises the frequency hopping transmission mode, generating frequency band information containing a frequency hopping sequence for transmitting data according to the frequency hopping transmission mode based on the interference information, wherein frequency bands used in different time periods in a frequency hopping cycle are recorded in the frequency hopping sequence.
22. The base station of claim 20, wherein the processor is further configured to: and under the condition that the multi-band transmission mode comprises the concurrent transmission mode, determining frequency band information containing the combination factors of the frequency bands for concurrently transmitting data according to the concurrent transmission mode based on the interference information.
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