WO2011060713A1

WO2011060713A1 - Resource allocation method, access network device and communication system

Info

Publication number: WO2011060713A1
Application number: PCT/CN2010/078809
Authority: WO
Inventors: 李爽
Original assignee: 华为技术有限公司
Priority date: 2009-11-23
Filing date: 2010-11-17
Publication date: 2011-05-26
Also published as: JP2013511863A; CN101707779A; CN101707779B; JP5439690B2

Abstract

A resource allocation method and an access network device and a communication system are provided. The resource allocation method includes: acquiring the current transmission power of a terminal in a first system, wherein the cell accessed by the terminal uses a first uplink frequency band; judging whether the acquired transmission power is greater than a preset first power threshold; if the result of the judgment being that the acquired transmission power is greater than the preset first power threshold, allocating an uplink resource block having the frequency away from the second frequency band used by a second system to the uplink data of the terminal, wherein the frequency interval between the second frequency band and the first uplink frequency band satisfies a preset frequency interval condition. Comparing with the prior art, this technical solution helps to reduce the hardware cost of the terminal.

Description

Resource allocation method, access network device and communication system

This application claims the priority of the Chinese Patent Application entitled "Resource Allocation Method, Access Network Equipment and Communication System" submitted to the China Patent Office on November 23, 2009, application number 200910199399.X, the entire contents of which are The citations are incorporated herein by reference. Technical field

The present invention relates to the field of communications technologies, and in particular, to a resource allocation method, an access network device, and a communication system.

BACKGROUND When signals of two wireless communication systems are simultaneously transmitted, if the ranges of frequency bands used by the two systems are very close, a relatively serious adjacent-channel interference usually occurs between the two.

The range of frequency bands used by the Personal Handy-Phone System (PHS) is 1884.5MHz 1919.6MHz; Long Term Evolution (LTE, Long Term Evolution) User Equipment (UE, User equipment) Range of BAND1 Band: Uplink ( UL, Uplink) is 1920 MHz ~ 1980 MHz, and downlink (DL, Downlink) is 2110 MHz ~ 2170 MHz. Since the range of the LTE UE BAND1 uplink frequency band is very close to the range of the PHS frequency band (1920MHz - 1919.6MHz = 0.4MHz), serious adjacent-channel interference will occur between the two systems.

In order to avoid the same adjacent frequency interference of the LTE UE uplink signal to the PHS signal, the astigmatism index of the LTE UE is very strict in the 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) 36.101 protocol. The index reaches -35.7dBm/300KHz, which is equivalent to the requirement of increasing the capacity of the ordinary filter by more than 5dB in the 300KHz bandwidth.

The existing solution mainly implements the spur indicator required by the 3GPP 36.101 protocol by enhancing the hardware filter of the terminal, thereby reducing the adjacent adjacent frequency interference of the uplink signal of the LTE UE to the PHS signal. It can be understood that, because the existing solution has high requirements on the processing of the hardware filter of the terminal, it is necessary to select a filter with high cost, which is very disadvantageous for reducing the hardware cost of the terminal. SUMMARY OF THE INVENTION The embodiments of the present invention provide a resource allocation method, an access network device, and a communication system, which can solve the problem of adjacent frequency interference and reduce the hardware cost of the terminal.

To solve the above technical problem, the embodiment of the present invention provides the following technical solutions:

A resource allocation method, including:

Obtaining a current transmit power of the terminal in the first system, where the cell accessed by the terminal uses the first uplink frequency band;

Determining whether the acquired transmit power is greater than a preset first power threshold;

If the result of the determination is that the acquired transmit power is greater than the preset first power threshold, the uplink data of the terminal is allocated an uplink resource block of the second frequency band used by the second system, where the second frequency band is The frequency interval of the first uplink frequency band satisfies a preset frequency interval condition.

An access network device, including:

An acquiring module, configured to acquire a current transmit power of a terminal in the first system, where the cell accessed by the terminal uses a first uplink frequency band;

a determining module, configured to determine whether a transmit power acquired by the acquiring module is greater than a preset first power threshold;

a resource allocation module, configured to: when the determining module determines that the transmit power acquired by the acquiring module is greater than a preset first power threshold, allocate a frequency for the uplink data of the terminal to be away from the second frequency band used by the second system. The uplink resource block, where the frequency interval between the second frequency band and the first uplink frequency band satisfies a preset frequency interval condition.

A communication system includes: an access network device in the foregoing embodiment, and a terminal using an uplink resource block allocated by the access network device.

It can be seen that, in the technical solution of the embodiment of the present invention, it is obtained and determined whether the current transmit power of the terminal is greater than a certain threshold, and when the transmit power of the terminal is greater than a certain threshold, the resource allocation is adjusted. The strategy is to allocate the uplink data of the terminal as far as possible to the uplink resource block of the adjacent frequency band occupied by other system systems, which is beneficial to reduce interference between adjacent systems; because the resource allocation strategy is adjusted to solve the adjacent frequency The interference problem can eliminate the need for the terminal to select a hardware filter with high performance. Compared with the prior art, it is beneficial to reduce the terminal. Hardware cost. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. Obviously, the drawings in the following description are only some of the present invention. For the embodiments, those skilled in the art can obtain other drawings according to the drawings without any creative labor.

1 is a flowchart of a resource allocation method according to Embodiment 1 of the present invention;

2 is a flowchart of a resource allocation method according to Embodiment 2 of the present invention;

3 is a schematic diagram of an access network device according to Embodiment 3 of the present invention;

4 is a schematic diagram of a communication system according to Embodiment 4 of the present invention. The embodiments of the present invention provide a resource allocation method, an access network device, and a communication system. By adjusting a resource scheduling algorithm for uplink data of a terminal, the hardware cost of the terminal is reduced.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention. Embodiment 1

Referring to FIG. 1, a resource allocation method according to Embodiment 1 of the present invention may include:

110. Acquire a current transmit power of the terminal in the first system, where the cell accessed by the terminal uses the first uplink frequency band.

In a practical application, the current transmit power of the terminal can be obtained in multiple manners. For example, the current transmit power of the terminal can be calculated according to the maximum transmit power (P _max ) of the terminal and the power headroom (PHR, Power Head Room) reported by the terminal. (P _max - PHR ), where PHR is the difference between the transmitted power and the maximum power.

120. Determine whether the obtained transmit power is greater than a preset first power threshold, and if so, Step 130 is performed; if no, step 140 can be performed.

It can be understood that the greater the transmission power of the terminal under the same conditions, the greater the interference to the signals transmitted in the adjacent frequency bands. In an actual application, the size of the first power threshold may be preset according to requirements. For example, the size of the first power threshold may be preset to 20 dBm.

130. The uplink data of the terminal is allocated to the uplink resource block of the second frequency band used by the second system, where the frequency interval between the second frequency band and the first uplink frequency band meets a preset frequency interval condition.

The cell accessed by the terminal may be referred to as the current cell, and correspondingly, the wireless communication system accessed by the terminal may be referred to as the current system. The second system and the first system may adopt different systems, and the frequency interval between the second frequency band and the uplink working frequency band (the first uplink frequency band) of the cell accessed by the terminal may generate a large interference if the preset frequency interval condition is met. The possibility is also relatively large. In this case, the uplink data of the terminal can be allocated an uplink resource block whose frequency is far from the second frequency band.

Specifically, the determining manner that the frequency interval between the second frequency band and the first uplink frequency band meets the preset frequency interval condition may be: determining whether the frequency interval between the second frequency band and the first uplink frequency band is less than a preset first frequency interval. The threshold value determines whether the frequency interval between the second frequency band and the first uplink frequency band satisfies a preset frequency interval condition. If the frequency interval between the second frequency band and the first uplink frequency band is smaller than the preset first frequency interval, determining that the frequency interval between the second frequency band and the first uplink frequency band meets a preset frequency interval condition, otherwise, determining The frequency interval between the second frequency band and the first uplink frequency band does not satisfy the preset frequency interval condition.

It can be understood that the size of the frequency interval between the two frequency bands will directly affect the interference between the signals transmitted on the two frequency bands. In a practical application, the size of the first frequency interval may be set according to a specific application scenario, and the resource may be determined according to whether the frequency interval between the second frequency band and the uplink working frequency band of the current cell is smaller than the first frequency interval. The assigned strategy.

On the other hand, in practical applications, the uplink data of the terminal can be allocated in a plurality of ways to the uplink resource block of the second frequency band used by the second system.

In an application scenario, for example, starting from an available uplink resource block with the highest frequency interval and the frequency interval of the second frequency band, it may be sequentially determined whether the uplink resource block satisfies a signal to noise ratio (SNR) decision condition, where The signal to noise ratio decision condition is that the signal to noise ratio of the uplink resource block is greater than the preset first signal to noise ratio threshold; and the first one that satisfies the above SNR decision condition is selected. Or a plurality of uplink resource blocks, and the selected uplink resource blocks are allocated to the foregoing terminal.

In another application scenario, for example, another frequency interval threshold (which may be referred to as a second frequency interval threshold) may be preset according to a specific situation, and the frequency interval between the frequency value and the second frequency band is greater than the preset In the available uplink resource blocks of the second frequency interval threshold, one or more uplink resource blocks satisfying the foregoing signal to noise ratio decision condition are selected, and the selected uplink resource block is allocated to the terminal.

On the other hand, the size of the first signal to noise ratio threshold can be set as needed.

In addition, regarding the uplink resource block allocation, the time domain and the frequency domain location of the uplink resource block allocated for the uplink data of the terminal may be notified to the terminal by using related signaling, and the terminal transmits the uplink data to the uplink resource block allocated thereto.

The resource allocation strategy can achieve the frequency of the uplink data transmitted by the terminal and the frequency interval of the second frequency band used by the second system as far as possible, thereby reducing or avoiding the transmission of the uplink data by the terminal and the second frequency band used by the second system. Mutual interference between the transmitted signals.

140. Allocate an uplink resource block for the uplink data of the terminal according to an existing process.

Specifically, in this step, one or more uplink resource blocks whose signal to noise ratio is greater than a preset first signal to noise ratio threshold may be allocated to the uplink data of the terminal.

Of course, when allocating uplink resource blocks for the uplink data of the terminal, it is also possible to perform allocation by referring to other multiple related parameters at the same time.

It should be noted that the first system and the second system in the embodiments of the present invention may be any two communication systems: PHS, LTE, Global System for Mobile communication (GSM), and code. The embodiment of the present invention is not limited to the above examples. The CDMA (Code Division Multiple Access), the third generation mobile communication system (3G, 3rd Generation Mobile Communication), Wimax, WiFi.

It should be noted that the foregoing steps may be specifically implemented on an access network device of a communication system, where the access network device may be a base station (a base station in an LTE system may be referred to as an enhanced base station), a base station controller, an access point, or Other devices having equivalent or similar functions in the communication system, the terminal may be a relay station (RS, Relay Station), a user equipment (such as a mobile phone), or other receiving device having equivalent or similar functions, which is not limited by the embodiment of the present invention.

It can be seen from the above technical solution that the embodiment of the present invention obtains and determines the current transmission of the terminal. Whether the power is greater than a certain threshold, when the transmission power of the terminal is greater than a certain threshold, adjust the resource allocation strategy, and allocate the frequency of the uplink data of the terminal as far as possible to the adjacent frequency band occupied by other system systems. The uplink resource block is beneficial to reduce the interference between adjacent systems. Because the resource allocation strategy is adjusted to solve the problem of adjacent frequency interference, the terminal can select the hardware filter with high performance, which is compared with the existing one. In terms of technology, the hardware cost of the terminal can be reduced.

Embodiment 2

In order to better understand the technical solution provided by the embodiment of the present invention, the system A occupies the frequency band a1, and the system B occupies the frequency band bl (where, the system A and the system B are different types of wireless communication systems, the frequency band a1 and the frequency band bl phase Neighbor) The base station of System A takes the process of flexibly performing resource allocation according to the current transmit power of the terminal as an example, and further details are described.

Referring to FIG. 2, a resource allocation method according to Embodiment 2 of the present invention may include:

201. The base station acquires a current transmit power of the terminal.

The manner in which the base station obtains the current transmit power of the terminal may be various.

In an application scenario, the terminal can report the current PHR in real time in each subframe. The base station can obtain the current transmit power of the terminal according to the maximum transmit power P _{max of the} terminal and the PHR currently reported by the terminal. Transmit power = ? dish - PHR ).

202. The base station determines whether the obtained transmit power is greater than a preset power threshold W1. If yes, go to step 203. If no, go to step 205.

Among them, under the same conditions, the greater the transmission power of the terminal, the greater the interference to the signals transmitted in the adjacent frequency bands. Therefore, the base station can preset the power threshold W1 according to the needs, and the current transmission power of the terminal. Differently from the preset power threshold W1, flexible selection of different resource allocation strategies.

In actual applications, the base station can flexibly adjust the size of its preset power threshold W1 according to different application scenarios to meet different scenarios.

For example, if the transmit power of the terminal is in the range of -45 dBm to 25 dBm, the preset power threshold W1 of the base station may be 15 dBm, 20 dBm, 22 dBm or other values, which is not limited herein.

203. The base station determines whether the frequency interval between the frequency band b1 and the uplink working frequency band of the terminal access cell is It is smaller than the preset frequency interval threshold Fl. If yes, go to step 204. If no, go to step 205. It can be understood that the uplink working frequency band of the current cell may be part or all of the frequency band a1 occupied by the system A, and the frequency interval between the frequency band bl occupied by the system B and the uplink working frequency band of the current cell is smaller than the preset frequency interval threshold Fl , you can consider the problem of mutual interference. The base station can flexibly select a different resource allocation strategy according to the size relationship according to the mutual interference situation in different scenarios and the flexible preset frequency interval F1.

It should be noted that the step 203 and the step 202 are not in an inevitable order, and the step 203 may be performed first, and then the step 202 is performed.

Further, if the base station has previously learned the relationship between the frequency band b 1 and the frequency interval of the currently accessed cell of the terminal and the frequency interval threshold F1, step 203 may be omitted, that is, if the base station determines the current transmission of the acquired terminal. If the power is greater than the preset power threshold W1, and the base station has previously learned that the frequency interval between the frequency band bl and the uplink working frequency band of the terminal accessing cell is smaller than the preset frequency interval threshold F1, step 204 is directly performed; Frequency band bl and terminal access small

205.

204. If the transmit power of the terminal is greater than the preset power threshold W1, and the frequency interval between the frequency band bl and the uplink working frequency band of the current cell is smaller than the preset frequency interval F1, the base station allocates the uplink data as far as possible from the frequency band. The uplink resource block of b 1.

For example, the size of the frequency interval F1 that is preset by the base station may be 1 ΜΗζ, 10 MHz, 20 MHz, or other values, which is not limited herein.

In an actual application, the uplink data allocation frequency of the terminal can be allocated as far as possible from the uplink resource block (RB) of the frequency band b1 in a plurality of manners, thereby reducing the adjacent adjacent frequency interference as much as possible, and the base station can refer to multiple related parameters. For the allocation, for example, the base station can simultaneously refer to: the frequency interval of the uplink resource block (ie, the available uplink resource block) to be allocated to the frequency band B1, the current SNR of the uplink resource block to be allocated, and other one or more related parameters.

The base station can obtain the current SNR of each uplink resource block to be allocated in real time, and the base station can further preset a signal to noise ratio threshold S1 by using the SNR of each to-be-assigned uplink resource block and a preset signal to noise ratio. S1 is compared to ensure that the uplink data of the terminal is allocated to the SNR. An available uplink resource block larger than the preset signal to noise ratio threshold SI to ensure the quality of data transmission and reduce the bit error rate.

In an application scenario, the base station may preferentially allocate the frequency of the uplink data of the terminal as far as possible. For example, another frequency interval threshold F2 may be set according to a specific situation, and the base station may

The SNR is an uplink resource block of S1, and the selected uplink resource block is allocated to the terminal. It can be understood that the implementation of the algorithm is relatively simple, the implementation of the resource allocation process is relatively low, and the implementation is relatively easy.

If there are multiple uplink resource blocks to be allocated that meet the allocation condition, the base station may select uplink data that is allocated to the terminal by some of the uplink resource blocks according to actual needs. It can be understood that the selected uplink resource blocks can be one or more.

For example, the base station may also preferentially determine whether the SNR of each uplink resource block is greater than a preset SNR threshold S1, starting from an available uplink resource block whose frequency is farthest from the frequency band bl, and selecting the first to satisfy the SNR greater than the pre- One or more uplink resource blocks of the SNR threshold S1 are allocated, and the selected uplink resource block is allocated to the terminal. It can be understood that the method can allocate the uplink data of the terminal to the uplink resource block whose frequency is farthest from the frequency band bl, thereby facilitating the maximum reduction of the adjacent frequency interference.

205. The base station allocates an uplink resource block for the uplink data of the terminal according to an existing process.

The implementation of this step is as follows: If the frequency interval between the frequency band bl and the uplink working frequency band of the current cell is greater than or equal to the preset frequency interval threshold Fl, or the current transmitting power of the terminal is less than or equal to the preset power threshold Wl. In this step, the base station may allocate one or more uplink resource blocks with the SNR as large as possible according to the SNR of each resource block to be allocated according to the existing process or mode, without considering the frequency size or frequency. The problem of spacing.

Of course, the base station can also refer to other parameters for resource allocation at the same time.

Further, the base station can notify the terminal of the time domain and the frequency domain location of the uplink resource block allocated for the uplink data of the terminal by using the related signaling.

After the terminal knows the time domain and the frequency domain location of the uplink resource block allocated by the base station for its uplink data, the terminal transmits the uplink data by using the uplink resource block allocated for the uplink data. The base station can be reasonably valid in real time according to the dynamic change of the actual situation according to the actual situation.

In order to facilitate a better understanding of the above technical solutions of the present embodiment, the technical solutions of the embodiments of the present invention are further described in detail below by way of specific examples.

For example, suppose the above system A is an LTE system, the frequency band a is LTE UE BAND 1 frequency band (UL: 1920 MHz ~ 1980 MHz; DL: 2110 MHz ~ 2170 MHz), system B is PHS, and the range of the frequency band bl is 1884.5 MHz. ~ 1919.6MHz.

The process of allocating resources to the terminals of the LTE system by the base station of the LTE system is taken as an example for description. For example, the power threshold Wl=20dBm preset by the base station, the frequency interval threshold Fl=30MHz, and the signal to noise ratio threshold Sl=40dB are taken as an example.

First, the base station can calculate the current transmit power of the terminal according to the PHR reported by the terminal in the current subframe in combination with the maximum transmit power P _max of the terminal.

Of course, the base station may also select other methods to obtain the current transmit power of the terminal, which is not limited herein.

The base station determines whether the current transmit power of the obtained terminal is greater than Wl (20dBm).

If yes, and the current working frequency band of the current cell is 1920 MHz - 1940 MHz (( 1920 MHz - 1919.6 MHz = 0.4 MHz ) < Fl ( 30 MHz ) ), that is, the frequency interval between the uplink working frequency band of the current cell and the frequency band occupied by the PHS is smaller than the pre-pre- The frequency interval F1 is set, and the base station can allocate an uplink resource block whose frequency is as far as possible from the frequency band bl (1919.6 MHz) and the SNR is greater than SI (40 dB).

For example, the base station can preferentially allocate an uplink resource block that is farthest from the frequency band bl (1919.6 MHz) (that is, an uplink resource block whose frequency is located at 1940 MHz), and allocate an uplink resource block with an SNR greater than 40 dB for the uplink data of the terminal.

If the current working frequency band of the current cell is 1960 MHz ~ 1980 MHz ( (1960 MHz -

1919.6 MHz = 40.4 MHz) >F1 (30MHz)), that is, the SNR of the uplink working frequency band of the current cell and the uplink resource block to be selected, and one or more uplink resource blocks whose SNR is as large as possible for the uplink data of the terminal. Of course, the base station can also refer to other parameters for resource allocation at the same time. If the current working frequency band of the current cell is 1940 MHz to 1960 MHz, that is, the frequency lower limit of the uplink working frequency band of the current cell and the frequency interval of the frequency band occupied by the PHS are smaller than the preset frequency interval greater than the preset frequency interval threshold Fl, The base station can flexibly select the foregoing two resource allocation policies to allocate uplink resource blocks for the uplink data of the terminal.

The base station may further notify the terminal of the time domain and frequency domain location of the uplink resource block allocated for the uplink data of the terminal by using the related signaling. After learning the time domain and the frequency domain location of the uplink resource block allocated by the base station for its uplink data, the terminal transmits the uplink data by using the uplink resource block allocated for its uplink data.

The base station may select an uplink resource block (RB) allocated by the relatively reasonable resource allocation policy for each terminal's uplink data according to the foregoing manner, so as to ensure that the resource allocation is reasonable and effective in real time.

For example, in each subframe, the base station can select a relatively reasonable resource allocation policy according to the foregoing manner, and use a physical uplink shared channel (PUSCH) that can be used for each terminal to transmit uplink data of the terminal. Allocate resource blocks to ensure that resource allocation is reasonable and effective in real time, and minimize adjacent channel interference.

It can be understood that the above system A and the above system B may be systems adopting any two systems as follows: LTE, PHS, GSM, CDMA, 3G, Wimax, WiFi, and are not limited to the above examples.

It should be noted that, in this embodiment, the base station allocates resource blocks to the terminal according to different situations according to different situations, and the foregoing base station may also be other devices with equivalent or similar functions in the communication system. .

It can be seen from the foregoing technical solution that, in this embodiment, the base station obtains and determines whether the transmit power of the terminal is greater than a certain threshold. When the transmit power of the terminal is greater than a certain threshold, the base station adjusts the resource allocation strategy. It is possible that the uplink data of the terminal is allocated a frequency away from the uplink resource blocks of the adjacent frequency bands occupied by other system systems, which is advantageous for reducing mutual interference; since the base station adjusts the resource allocation strategy to solve the problem of adjacent frequency interference, the terminal may There is no need to select a high-performance filter, which is advantageous for reducing the hardware cost of the terminal compared to the prior art.

Further, the base station can flexibly select a corresponding resource allocation policy according to specific conditions. Allocating resource blocks to terminals can be applied to multiple application scenarios.

In order to facilitate the implementation of the technical solution of the present invention, an access network device is further provided in the embodiment of the present invention. Embodiment 3

Referring to FIG. 3, an access network device 300 according to Embodiment 3 of the present invention may include: an obtaining module 310, a determining module 320, and a resource allocating module 330.

The acquiring module 310 is configured to acquire the current transmit power of the terminal in the first system, and the cell accessed by the terminal uses the first uplink frequency band.

In an actual application, the acquiring module 310 can obtain the current transmit power of the terminal in multiple manners. For example, the current transmit power of the terminal can be calculated according to the maximum transmit power (P _max ) of the terminal and the PHR reported by the terminal.

The determining module 320 is configured to determine whether the transmit power acquired by the acquiring module 310 is greater than a preset first power threshold.

The resource allocation module 330 is configured to: when the determining module 320 determines that the transmit power acquired by the acquiring module 310 is greater than the preset first power threshold, allocate the frequency of the uplink data of the terminal to the uplink of the second frequency band used by the second system. a resource block, where a frequency interval between the second frequency band and the first uplink frequency band meets a preset frequency interval condition.

In an application scenario, the access network device 300 may further include:

a determining module, configured to determine whether a frequency interval between the second frequency band and the first uplink frequency band meets a preset frequency interval condition by determining whether a frequency interval between the second frequency band and the first uplink frequency band is smaller than a preset first frequency interval threshold .

Specifically, if the frequency interval between the second frequency band and the first uplink frequency band is smaller than the preset first frequency interval, the frequency interval between the second frequency band and the first uplink frequency band is determined to meet a preset frequency interval condition. And determining that the frequency interval between the second frequency band and the first uplink frequency band does not satisfy the preset frequency interval condition.

In an actual application, the resource allocation module 330 can be implemented as a terminal in multiple manners. The row data allocation frequency is far from the uplink resource block of the second frequency band used by the second system.

In an application scenario, the resource allocation module 330 can include:

a first submodule, configured to determine, according to an available uplink resource block with a maximum interval between the frequency value and the second frequency band, whether the uplink resource block satisfies a signal to noise ratio decision condition, where the signal to noise ratio decision condition is an uplink resource block The noise ratio is greater than a preset first signal to noise ratio threshold; and one or more uplink resource blocks that satisfy the signal to noise ratio decision condition first are selected.

And a second submodule, configured to allocate an uplink resource block selected by the first submodule to the terminal. In an application scenario, the resource allocation module 330 can include:

a third submodule, configured to select one or more uplink resource blocks that satisfy a signal to noise ratio decision condition from available uplink resource blocks whose frequency values and frequency intervals of the second frequency band are greater than a preset second frequency interval threshold The signal to noise ratio decision condition is that the signal to noise ratio of the uplink resource block is greater than a preset first signal to noise ratio threshold;

And a fourth submodule, configured to allocate an uplink resource block selected by the third submodule to the terminal. The resource allocation module 330 is further configured to: when the determining module 320 determines that the transmit power acquired by the acquiring module 310 is less than a preset first power threshold, allocate an uplink resource block with an SNR as large as possible for the uplink data of the terminal.

Further, the resource allocation module 330 can adjust the relatively reasonable resource allocation policy for the uplink resource block allocated by the terminal uplink data in real time according to the dynamic change of the actual situation, so as to ensure that the resource allocation is timely and reasonable.

In an application scenario, the resource allocation module 330 is further configured to: determine, by the determining module 320, that the transmit power acquired by the acquiring module 310 is less than or equal to a preset first power threshold, or in the second frequency band and the first uplink. When the frequency interval of the frequency band does not meet the preset frequency interval condition, the uplink data of the terminal is allocated an uplink resource block whose signal to noise ratio is greater than the first signal to noise ratio threshold.

Further, the access network device 300 may further include:

The notification module is configured to notify the terminal by using the relevant signaling, the time domain and the frequency domain location of the uplink resource block allocated by the resource allocation module 330 for the uplink data of the terminal.

After learning the time domain and the frequency domain location of the uplink resource block allocated by the base station for its uplink data, the terminal transmits the uplink data by using the uplink resource block allocated for its uplink data.

It should be noted that the first system and the second system may be respectively adopted by different standards. The wireless communication system, for example, the first system and the second system may be systems employing any two of the following systems: PHS, LTE, GSM, CDMA, 3G, Wimax, WiFi, and embodiments of the present invention are not limited to the above examples.

It should be noted that the access network device 300 in this example may be a base station (a base station in an LTE system may be referred to as an enhanced base station), a base station controller, an access point, or other devices having equivalent or similar functions in the communication system. The terminal in this example may be a user equipment, a relay station, or other receiving device with equivalent or similar functions, which is not limited in this embodiment.

It can be understood that the access network device 300 in this embodiment may be the base station in the second embodiment, and the functions of the respective functional modules may be specifically implemented according to the method in the foregoing method embodiment, and the specific implementation process may refer to the foregoing embodiment. The relevant description in the description will not be repeated here.

It can be seen that, in the embodiment, the access network device 300 obtains and determines whether the current transmit power of the terminal is greater than a certain threshold. When the transmit power of the terminal is greater than a certain threshold, the access network device 300 adjusts the resource. The allocation strategy, as far as possible, allocates the uplink data of the terminal to the uplink resource blocks of the adjacent frequency bands occupied by other system systems, which is beneficial to reduce or avoid mutual interference; because the access network device 300 adjusts the resource allocation The strategy can solve the problem of the adjacent-channel interference, and the terminal does not need to select a high-performance filter, which is advantageous for reducing the hardware cost of the terminal compared with the prior art.

Further, the access network device 300 can flexibly select a corresponding resource allocation policy to allocate a resource block to the terminal according to a specific situation, and can be applied to multiple application scenarios.

Further, the embodiment of the present invention further provides a communication system, which may include: an access network device 300, and a terminal that uses an uplink resource block allocated by the access network device 300.

In order to facilitate the better implementation of the technical solution of the present invention, a communication system is also provided in the embodiment of the present invention. Embodiment 4

Referring to FIG. 4, a communication system according to Embodiment 4 of the present invention may include: an access network device 410 and a terminal 420, and the access network device 410 and the terminal 420 are communicably connected by data.

The access network device 410 is configured to obtain the current transmit power of the terminal 420 in the first system, and the cell accessed by the terminal 420 uses the first uplink frequency band; determining whether the acquired transmit power is greater than a preset first power threshold. If the result of the judgment is that the acquired transmission power is greater than the preset first The power is wide, and the uplink data of the terminal 420 is allocated to the uplink resource block of the second frequency band used by the second system, where the frequency interval between the second frequency band and the first uplink frequency band satisfies a preset frequency interval condition; The time domain and frequency domain location of the uplink resource block of the uplink data allocation of 420 is notified to the terminal 420.

The terminal 420 is configured to use the access network device 410 to transmit uplink data for the allocated uplink resource block.

The access network device 410 can ensure that the real-time resource allocation is real and reasonable in real time according to the dynamic changes of the actual situation.

It is to be understood that the first system and the second system may be systems employing any two of the following systems: PHS, LTE, GSM, CDMA, 3G, Wimax, WiFi, and the present invention is not limited to the above examples.

For example, the access network device 410 can be a base station of a Long Term Evolution system, and the second system can be a personal handheld telephone system. The first upstream frequency band can be, for example, 1920 MHz to 1940 MHz or 1940 to 1960 MHz.

It can be understood that the access network device 410 in this embodiment may be the access network device 300 in the third embodiment, and the functions of the respective functional modules may be specifically implemented according to the method in the foregoing solution embodiment, and the specific implementation process thereof. Reference may be made to related descriptions in the foregoing embodiments, and details are not described herein again.

It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because certain steps may be performed in other sequences or concurrently in accordance with the present invention. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the above embodiments, the descriptions of the various embodiments are different, and the parts that are not detailed in an embodiment can be referred to the related descriptions of other embodiments.

In summary, in the embodiment of the present invention, the access network device obtains and determines whether the current transmit power of the terminal is greater than a certain threshold. When the transmit power of the terminal is greater than a certain threshold, the access network device adjusts resource allocation. The strategy of allocating as much as possible the uplink data of the terminal to the uplink resource blocks of the adjacent frequency bands occupied by other system systems is beneficial to reduce or avoid mutual interference; Since the access network device solves the problem of the adjacent-channel interference by adjusting the resource allocation policy, the terminal does not need to select a high-performance filter, which is advantageous for reducing the hardware cost of the terminal compared with the prior art.

Further, the access network device can flexibly select a corresponding resource allocation policy to allocate a resource block to the terminal according to a specific situation, and can be applied to multiple application scenarios.

A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the above program can be stored in a computer readable storage medium, and the program is executed. At the time, the flow of the embodiment of each method as described above may be included. The above storage medium may be a magnetic disk, an optical disk, or a read-only memory.

(Read-Only Memory, ROM) or Random Access Memory (RAM).

The foregoing describes a resource allocation method, an access network device, and a communication provided by the embodiments of the present invention. The foregoing description of the embodiments is only used to help understand the method and core ideas of the present invention. The present invention is not limited by the scope of the present invention, and the details of the present invention are not limited by the scope of the present invention.

Claims

Rights request

A resource allocation method, characterized in that it comprises:

The method of claim 1, further comprising: determining whether the frequency interval between the second frequency band and the first uplink frequency band meets a preset frequency interval condition, specifically:

And determining whether the frequency interval between the second frequency band and the first uplink frequency band meets a preset frequency interval condition by determining whether the frequency interval between the second frequency band and the first uplink frequency band is smaller than a preset first frequency interval threshold.

The method according to claim 2, wherein the uplink data of the terminal is allocated with an uplink resource block of a second frequency band used by the second system, including:

Starting from an available uplink resource block with the highest frequency interval and the frequency interval of the second frequency band, determining whether the uplink resource block satisfies a signal to noise ratio decision condition, where the signal to noise ratio decision condition is that the signal to noise ratio of the uplink resource block is greater than The preset first signal to noise ratio threshold;

Selecting one or more uplink resource blocks that satisfy the SNR decision condition first, and allocating the selected uplink resource block to the terminal;

Or

Selecting one or more uplink resource blocks that satisfy the SNR decision condition from an available uplink resource block whose frequency value is equal to a frequency interval of the second frequency band greater than a preset second frequency interval threshold, and the selected uplink is selected. A resource block is allocated to the terminal.

The method according to any one of claims 1 to 3, wherein the first system is a long-term evolution system, and the second system and the first system are different communication systems.

The method according to claim 4, wherein: the uplink data of the terminal is allocated to the uplink resource block of the second frequency band used by the second system, and the method includes: The uplink uplink resource block of the second frequency band used by the second system is allocated to the physical uplink shared channel used by the terminal, where the first uplink frequency band is 1920 MHz ~ 1940 MHz or 1940 ~ 1960 MHz.

6. An access network device, comprising:

The access network device according to claim 6, further comprising: a determining module, configured to determine whether a frequency interval between the second frequency band and the first uplink frequency band is smaller than a preset first frequency interval threshold And determining whether the frequency interval between the second frequency band and the first uplink frequency band meets a preset frequency interval condition.

8. The access network device of claim 7, wherein

The resource allocation module includes:

a first submodule, configured to determine, according to an available uplink resource block with a maximum interval between the frequency value and the second frequency band, whether the uplink resource block satisfies a signal to noise ratio decision condition, where the signal to noise ratio decision condition is an uplink resource The signal to noise ratio of the block is greater than a preset first signal to noise ratio threshold; selecting one or more uplink resource blocks that first satisfy the signal to noise ratio decision condition;

a second submodule, configured to allocate an uplink resource block selected by the first submodule to the terminal;

Or

The resource allocation module includes:

a third submodule, configured to select one or more uplinks that satisfy the SNR decision condition from an available uplink resource block whose frequency value and the frequency interval of the second frequency band are greater than a preset second frequency interval threshold Resource block And a fourth submodule, configured to allocate an uplink resource block selected by the third submodule to the terminal.

The access network device according to any one of claims 6 to 8, wherein the access network device is a base station device in a first system, and the first system is a long term evolution system, The second system and the first system are different communication systems.

A communication system, comprising: an access network device according to any one of claims 6 to 9, and a terminal using an uplink resource block allocated by the access network device.