WO2013185496A1

WO2013185496A1 - Resource allocation method and device

Info

Publication number: WO2013185496A1
Application number: PCT/CN2013/072427
Authority: WO
Inventors: 彭炳光; 林伟勇
Original assignee: 华为技术有限公司
Priority date: 2012-06-13
Filing date: 2013-03-12
Publication date: 2013-12-19
Also published as: CN102711257A; CN102711257B

Abstract

Disclosed are a resource allocation method and device. The present invention relates to the field of communications, and can be implemented by only obtaining an interference noise value on each frequency unit. The present invention effectively improves the scheduling efficiency and cell throughput, and overcomes the defect that the prior art is implemented by necessarily obtaining a signal of a user on each frequency unit. The method provided by an embodiment of the present invention comprises: obtaining an interference noise value of a user equipment (UE) on each frequency unit of an uplink channel or a downlink channel; obtaining a scheduling requirement of the UE; searching for a frequency resource section with the least interference according to the interference noise value on each frequency unit and the scheduling requirement of the UE, the frequency resource section comprising at least one frequency unit; and allocating the found frequency resource section with the least interference to the UE.

Description

The present invention claims the priority of a Chinese patent application filed on June 13, 2012 by the Chinese Patent Office, Application No. 201210194940. X, entitled "A Resource Allocation Method and Apparatus", The entire contents are incorporated herein by reference. Technical field

The present invention relates to the field of communications, and in particular, to a resource allocation method and device. Background technique

In a wireless mobile communication system, for example, a mobile subscriber in a Long Term Evolution (LTE) system is in a different location of a cell, and the channel environment is different, which is represented in the frequency domain, and mobile users in different locations have different frequency domains. Channel response. Therefore, in the same frequency band, some mobile users have good channel quality, and some mobile users have poor channel quality. Therefore, it is necessary to schedule resource allocation blocks for users according to the specific environment of the channel to improve the throughput of the cell. For the Signal to Interference plus Noise Ratio (SINR) size, select the best resource that meets the user data requirements for scheduling.

However, the above scheduling method has at least the following problems: It is necessary to obtain a signal of the user on each frequency unit to calculate the SINR, but the signal of the user on each frequency unit may not be obtained, for example, in the LTE system, the user is in each The signal on the frequency unit (or resource block) is mainly implemented by measuring the sounding reference signal sent by the terminal, but the sounding reference signal brings some negative effects. For example, the sounding reference signal will permanently occupy the last symbol of the sounding subframe. Data cannot be transmitted on the symbol, which results in an increase in the data encoding rate, affecting the demodulation performance, and the like. Therefore, there is a need to cancel the sounding reference signal. Once canceled, the signal of each resource block in the user bandwidth cannot be obtained, and the corresponding SINR cannot be calculated, so effective scheduling cannot be performed. Summary of the invention

Embodiments of the present invention provide a resource allocation method and device, which can implement resource scheduling only by acquiring an interference noise value on each frequency unit, and effectively improve scheduling efficiency and throughput of a cell.

In order to achieve the above object, the technical solution adopted by the embodiment of the present invention is

In one aspect, an embodiment of the present invention provides a resource allocation method, including:

Obtaining an interference noise value of the user equipment UE on each frequency unit of the uplink channel or the downlink channel;

Obtaining a scheduling requirement of the UE;

Searching for a frequency resource segment with the least interference according to the interference noise value on each frequency unit and the scheduling requirement of the UE, where the frequency resource segment includes at least one frequency unit;

The frequency resource segment with the least interference that is searched for is allocated to the UE.

In another aspect, an embodiment of the present invention provides a resource allocation device, including:

a first acquiring unit, configured to acquire an interference noise value of the user equipment UE on each frequency unit of the uplink channel or the downlink channel;

a second acquiring unit, configured to acquire a scheduling requirement of the UE;

a search unit, configured to search for a frequency resource segment with minimum interference according to an interference noise value on each frequency unit and a scheduling requirement of the UE, where the frequency resource segment includes at least one frequency unit;

An allocation unit, configured to allocate the frequency resource segment with the smallest interference that is searched to the

UE.

The resource allocation method and device provided by the embodiments of the present invention only need to obtain the interference noise value on each frequency unit to implement resource scheduling, thereby effectively improving scheduling efficiency and cell throughput. The drawback that the prior art must obtain the signal of the user on each frequency unit can be overcome. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

FIG. 1 is a flowchart of a resource allocation method according to an embodiment of the present invention;

2 is a flowchart of another resource allocation method according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of determining a candidate frequency resource segment;

4 is a structural diagram of a device for a resource allocation device according to an embodiment of the present invention; FIG. 5 is a structural diagram of another device for resource allocation device according to an embodiment of the present invention. detailed description

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.

An embodiment of the present invention provides a resource allocation method, as shown in FIG. 1 , including

S101: Acquire an interference noise value of the user equipment UE on each frequency unit of the uplink channel or the downlink channel;

S102: Obtain a scheduling requirement of the UE.

S103: Search for a frequency resource segment with the smallest interference according to the interference noise value on each frequency unit and the scheduling requirement of the UE, where the frequency resource segment includes at least one frequency unit; S104: minimize the searched interference. The frequency resource segment is allocated to the UE. The resource allocation method provided by the embodiment of the present invention only needs to acquire the interference noise value on each frequency unit to implement resource scheduling, and effectively improve scheduling efficiency and cell throughput. The drawback that the prior art must obtain the signal of the user on each frequency unit can be overcome.

Another embodiment of the present invention introduces a resource allocation method, which can be applied to resource allocation of all frequency division systems, for example: Frequency Division Multiple Access (FDMA) system, Long Term Evolution (Long Term Evolution) For the LTE system, each resource block is a frequency unit. In the LTE system, the LTE system is used as an example. Therefore, in the following embodiments, the frequency unit is specifically represented as a resource block (RB). In addition, the embodiment of the present invention can be applied to the scheduling of the uplink channel resources, and is also applied to the scheduling of the downlink channel resources. The implementation principle is the same. See Figure 2, including:

S201: Obtain an interference noise value of the user equipment UE on each resource block of the uplink channel. For example, the evolved Node B (eNB) obtains the current transmission time interval (TTI) of the UE. Interference noise value on each resource block of the inner uplink channel.

S202: Obtain a scheduling requirement of the UE.

Exemplarily, the eNB may acquire a scheduling requirement of the UE in the current TTI. For example, it can include:

The eNB receives a Buffer Status Report (BSR) message sent by the UE, where the BSR message includes the buffer data amount of the UE;

The eNB acquires the amount of data to be transmitted by the UE according to the buffer data amount of the UE of the BSR message.

Optionally, a quality of service (QoS) rate control policy may also be considered when determining the amount of data to be transmitted by the UE according to the buffer data volume of the UE of the BSR message. The cache status of the UE, etc.

The eNB determines the spectrum efficiency of the Modulation And Coding Scheme (MCS) corresponding to the current frame according to the SINR information of the UE's entire channel in the current TTI (ie, each frequency unit capable of detecting the signal).

Exemplarily, the eNB can obtain the MCS through the SINR information query of the user, and the MCS corresponds to the spectrum efficiency. The spectrum efficiency may reflect the amount of data that the RB can transmit. One RB represents a resource block, and the SINR information of the user may include an adjustment of the average SINR or SINR of the full bandwidth of the uplink channel in the current TTI, where the current TTI is uplinked. The average SINR of the full bandwidth of the channel can be obtained by averaging the SINRs of all the RBs that have been scheduled by the uplink channel in the current TTI; the adjustment amount of the SINR can be obtained by filtering the measured SINR, and The block rate is further obtained by adjusting the filtered SINR. Of course, in order to obtain better effects, the SINR information of the user may further include more parameters related to SINR.

The eNB acquires the number of resource blocks expected by the UE according to the amount of data to be transmitted by the UE and the spectrum efficiency.

For example, the eNB may calculate the number of RBs expected by the UE according to the ratio of the amount of data to be transmitted by the UE to the spectrum efficiency of the MCS corresponding to the current TTI.

Preferably, when determining the scheduling requirement of the UE, the LTE uplink transmit power and/or the available power of the UE may be further considered. For example, the maximum number of RBs that the UE can be allocated is assumed to be M, and the eNB is configured according to the data to be transmitted by the UE. The ratio of the spectrum to the spectrum efficiency of the MCS corresponding to the current TTI is calculated as the number of RBs expected by the UE is N, and the scheduling requirement of the UE may take a smaller value of M and N. Of course, if the LTE uplink transmit power and/or the available power of the UE are not considered, the scheduling requirement of the UE may be directly determined according to the calculated number of RBs expected by the UE.

Preferably, the eNB may further adjust the calculated number of RBs expected by the UE. Whole. For example, the eNB adjusts the number of RBs allocated by the UE to satisfy:

The number of RBs = ( 2 ^nl ) * ( 3 ) * ( 5 ⁿ³ ), where nl , η2, η3 are zero or a positive integer. Exemplarily, if the calculated number of RBs does not satisfy the above equation, priority is given to adjusting to an integer greater than the calculated number of RBs and having the smallest difference, and then using the UE's transmit power control for verification, if not, adjusting It is an integer smaller than the calculated number of RBs and having the smallest difference.

For example, if the calculated number of RBs is 7, the above equation is not satisfied, and the adjustment is given priority to 10. If the adjustment to 10 is limited by the UE's transmit power control, the adjustment is 6.

S203: Search and determine a candidate frequency resource segment according to the scheduling requirement of the UE. The eNB may use different search modes according to whether the frequency unit required by the UE is continuous, and whether the allocated frequency unit must be continuously determined according to the protocol of the LTE.

Exemplarily, if the scheduling requirement of the UE is: when at least one frequency unit needs to be consecutive, the eNB may determine a candidate frequency resource segment by using a window search manner on the uplink channel, where the window search mode is used. The size of the search window is determined according to the scheduling requirements of the UE.

For example, referring to FIG. 3, a process of determining a candidate frequency resource segment by means of window search is explained. There are 15 RBs illustrated in the figure, and the number of RBs expected by the eNB determined by the eNB is 3, so the size of the search window can be determined to be 3 RB, the eNB sequentially determines a frequency resource segment in which the frequency unit is continuous and unoccupied, in a manner that the search window of three RBs moves from a high frequency to a low frequency or from a low frequency to a high frequency, see FIG. 3 . In this embodiment, a total of seven candidate frequency resource segments are determined. Of course, there are many ways to search for a candidate frequency resource segment, which is not limited in this embodiment of the present invention.

Exemplarily, if the scheduling requirement of the UE is: when at least one frequency unit is required to be discontinuous, the eNB may search, on the uplink channel, all frequency resource segments of the resource unit that are not occupied and all the scheduling requirements of the UE are not occupied. .

For example, still referring to FIG. 3, there are 15 RBs illustrated in the figure, wherein the unoccupied RBs include RB1, RB3, RB4, RB6, RB7, RB8, RB10, RB11, RB12, RB13, RB14, and RB15, the scheduling requirement of the UE is 3 RBs, and the eNB counts that the unoccupied RB includes any combination of three different RBs, and each combination constitutes one frequency resource segment.

In addition, if the eNB searches for the number of unoccupied frequency units on the uplink channel that is smaller than the number of scheduling requirements of the UE, all unoccupied frequency units can be directly used as the frequency resource segment with the least interference.

S204: Calculate an equivalent interference noise value of each of the candidate frequency resource segments according to an interference noise value on each frequency unit included in each of the candidate frequency resource segments;

Further, when the interference noise value of the RB acquired by the eNB is a linear domain, the interference noise value of the RB is converted into a dB domain, and then each candidate is calculated according to the interference noise value of the RB included in each candidate frequency resource segment. The equivalent interference noise value of the frequency resource segment;

When the interference noise value of the RB acquired by the eNB is a decibel (dB) domain, the equivalent interference noise value of each candidate frequency resource segment is directly calculated according to the interference noise value of the RB included in each candidate frequency resource segment. .

Exemplarily, referring to FIG. 3, if the ith interference noise value obtained by the eNB is INi, the calculation method of the equivalent interference noise value is as follows:

(1) calculating an equivalent interference noise value according to a reciprocal of the interference noise value of the RB included in the candidate frequency resource segment;

For example, if the candidate frequency resource segment 1 includes RB1, the equivalent interference noise value of the candidate frequency resource segment 1 is 1/IN _1;

The candidate frequency resource segment 2 includes RB3 and RB4, and the equivalent interference noise value of the candidate frequency resource segment 2 is 1/IN ₃ +1/IN ₄ ;

The candidate frequency resource segment 3 includes RB6, RB7, and RB8, and the equivalent interference noise value of the candidate frequency resource segment 3 is 1/IN ₆ +1/IN ₇ +1/IN ₈ ;

By analogy, the equivalent interference noise values of other candidate frequency resource segments can be obtained, which are no longer listed here. (2) calculating an equivalent interference noise value according to an average of the reciprocal sum of the interference noise values of the RBs included in the candidate frequency resource segment; for example, if the candidate frequency resource segment 1 includes RB1, the equivalent of the candidate frequency resource segment 1 The interference noise value is 1/IN _{1 ;}

The candidate frequency resource segment 2 includes RB3 and RB4, and the equivalent interference noise value of the candidate frequency resource segment 2 is (1/IN ₃ +1/IN ₄ ) /2;

The candidate frequency resource segment 3 includes RB6, RB7, and RB8, and the equivalent interference noise value of the candidate frequency resource segment 3 is (1/ΙΝ ₆ +1/ΙΝ ₇ +1/ΙΝ ₈ )/3;

By analogy, the equivalent interference noise values of other candidate frequency resource segments can be obtained, which are not listed here.

(3) calculating an equivalent interference noise value according to a sum of interference noise values of the RBs included in the candidate frequency resource segment;

For example, if the candidate frequency resource segment 1 includes RB1, the equivalent interference noise value of the candidate frequency resource segment 1 is IN _{1 ;}

The candidate frequency resource segment 2 includes RB3 and RB4, and the equivalent interference noise value of the candidate frequency resource segment 2 is IN ₃ + IN ₄ ;

The candidate frequency resource segment 3 includes RB6, RB7, and RB8, and the equivalent interference noise value of the candidate frequency resource segment 3 is IN ₆ + IN ₇ + IN ₈ ;

(4) calculating an equivalent interference noise value according to an average value of sums of interference noise values of RBs included in the candidate frequency resource segment;

For example, if the candidate frequency resource segment 1 includes RB1, the equivalent interference noise value of the candidate frequency resource segment 1 is IN1;

The candidate frequency resource segment 2 includes RB3 and RB4, then the candidate frequency resource segment 2, etc. The effective interference noise value is (IN3+IN4) /2;

The candidate frequency resource segment 3 includes RB6, RB7, and RB8, and the equivalent interference noise value of the candidate frequency resource segment 3 is (IN6+IN ⁷ +IN8)/3;

S205: Determine, according to the equivalent interference noise value of each candidate frequency resource segment, a frequency resource segment with the smallest interference;

Exemplarily, when the eNB calculates the equivalent interference noise value according to the reciprocal sum of the interference noise values of the RBs included in the candidate frequency resource segment, or according to the average of the reciprocal sum of the interference noise values of the RBs included in the candidate frequency resource segment. The eNB determines that the candidate frequency resource segment with the largest equivalent interference noise value is the frequency resource segment with the smallest interference, and further, if the equivalent interference noise values of the two or more candidate frequency resource segments are the same and the largest, the eNB determines The first most frequently searched frequency resource segment with the same equivalent interference noise value is the frequency resource segment with the least interference.

Exemplarily, when the eNB calculates the equivalent interference noise value according to the sum of the interference noise values of the RBs included in the candidate frequency resource segment, or the average of the sum of the interference noise values of the RBs included in the candidate frequency resource segment, The candidate frequency resource segment with the smallest equivalent interference noise value is the frequency resource segment with the smallest interference. Further, if the equivalent interference noise values of the two or more candidate frequency resource segments are the same and the smallest, the first is determined first. The searched equivalent interference noise values are the same and the smallest candidate frequency resource segments are the frequency resource segments with the least interference.

S206: Allocate the frequency resource segment with the smallest interference to the UE.

For example, after the eNB allocates the frequency resource segment with the least interference to the UE to the UE, it may send an uplink scheduling (UL Grant) indication to the UE, and indicate to the UE the location of the frequency resource segment with the least interference. The UE is caused to acquire the location of the frequency resource segment with the least interference according to the uplink scheduling (UL Grant) indication, and send the uplink data at the location of the frequency resource segment with the smallest interference. The resource allocation method provided by another embodiment of the present invention is applicable to the scheduling requirement of the UE: a case where one frequency unit or a plurality of discontinuous frequency units are required, and the principle is the same as the above embodiment, but the search method is different. Specifically, the eNB searches for an unoccupied frequency unit on the uplink channel, and selects a frequency unit with the same number of scheduling requirements of the UE as the interference minimum according to the order of the interference noise value of the unoccupied frequency unit. Frequency resource segment. In addition, if the eNB searches for the number of unoccupied frequency units on the uplink channel that is smaller than the number of scheduling requirements of the UE, all unoccupied frequency units are used as the frequency resource segment with the least interference.

The resource allocation method provided by the embodiment of the present invention has simple and reliable implementation conditions, and only needs to obtain the interference noise value on each frequency unit, thereby effectively improving the scheduling efficiency and the throughput of the cell. It overcomes the shortcomings that the prior art must obtain the signal of the user on each frequency unit.

Another embodiment of the present invention provides a resource allocation device 40, which is used to implement the method shown in FIG. 1. The device 40 can be applied to resource allocation of all frequency division systems, for example, an FDMA system, an LTE system, and the like. The principle is the same, except that the specific parameter names of the frequency units involved are different. This embodiment uses the LTE system as an example for description. In addition, the device 40 can be applied to the scheduling of the uplink channel resources, and is also applied to the scheduling of the downlink channel resources. The implementation principle is the same. In the LTE system, the device 40 can be configured on an eNB. Referring to FIG. 4 and FIG. 5, the device 40 includes:

The first obtaining unit 401 is configured to acquire an interference noise value of the user equipment UE on each resource unit of the uplink channel;

Exemplarily, in the LTE system, each RB is a resource block, so the first obtaining unit 401 can acquire the interference noise value on each RB of the uplink channel in the current TTI.

The second obtaining unit 402 is configured to acquire a scheduling requirement of the UE.

Exemplarily, the second obtaining unit 402 may acquire a scheduling requirement of the UE in the current TTI. For example, in an LTE system, it may include:

The second obtaining unit 402 receives a buffer period status report BSR message sent by the UE, where the BSR message includes the buffer data amount of the UE;

The second obtaining unit 402 acquires the amount of data to be transmitted by the UE according to the buffer data amount of the UE of the BSR message.

Optionally, the second obtaining unit 402 may also consider the QoS rate control policy, the buffer status of the UE, and the like when determining the amount of data to be transmitted by the UE according to the buffer data amount of the UE of the BSR message.

The second obtaining unit 402 determines the frequency efficiency of the MCS corresponding to the current TTI according to the SINR information of the full bandwidth of the uplink channel of the UE in the current TTI.

Exemplarily, the second obtaining unit 402 can obtain the MCS by using the SINR information of the user, and the MCS corresponds to the spectrum efficiency. The spectrum efficiency may reflect the amount of data that the RB can transmit. One RB represents one resource block, and the SINR information of the user may include an adjustment amount of the average SINR or SINR of the full bandwidth of the uplink channel in the current TTI, where the current TTI is uplinked. The average SINR of the full bandwidth of the channel can be obtained by averaging the SINRs of all the RBs that have been scheduled by the uplink channel in the current TTI; the adjustment amount of the SINR can be obtained by filtering the measured SINR, and The block rate is further obtained by adjusting the filtered SINR. Of course, in order to obtain better effects, the SINR information of the user may further include more parameters related to SINR.

The second obtaining unit 402 acquires a calculated number of resource blocks expected by the UE according to the amount of data to be transmitted by the UE and the spectrum efficiency.

Exemplarily, the second obtaining unit 402 may calculate the number of RBs expected by the UE according to the ratio of the amount of data to be transmitted by the UE to the frequency efficiency of the MCS corresponding to the current ΤΉ.

Preferably, when determining the scheduling requirement of the UE, the second acquiring unit 402 may further consider the limitation of the LTE uplink transmit power and/or the available power of the UE, for example, assume that the maximum number of RBs that the UE can be allocated is M, and the eNB according to The amount of data to be transmitted by the UE corresponds to the current TTI. The ratio of the frequency efficiency of the MCS is calculated as the number of RBs expected by the UE is N, and the scheduling requirement of the UE may take a smaller value of M and N. Certainly, if the LTE uplink transmit power and/or the available power of the UE are not considered, the scheduling requirement of the UE may be directly determined according to the calculated number of RBs expected by the UE.

Preferably, the second obtaining unit 402 may further adjust the calculated number of RBs expected by the Ue. For example, the second obtaining unit 402 adjusts the number of RBs allocated by the UE to satisfy:

a searching unit 403, configured to search for a frequency resource segment with the smallest interference according to the interference noise value on each of the frequency units and the scheduling requirement of the UE;

Exemplarily, the search unit 403 includes:

The searching module 4031 is configured to search for and determine a candidate frequency resource segment according to the scheduling requirement of the UE.

The search module 4031 may use different search methods depending on whether the allocated frequency resource segments are required to be continuous, and whether the allocated frequency units must be continuously determined according to the protocol of the LTE.

Exemplarily, if the scheduling requirement of the UE is: when at least one frequency unit needs to be consecutive, the search module 4031 may determine a candidate frequency resource segment by using a window search manner on the uplink channel, where the window search mode is The size of the search window used is determined according to the scheduling requirements of the UE.

For example, referring to FIG. 3, it is explained that the method of window search is used to determine the candidate frequency resource segment. Cheng. There are 15 RBs illustrated in the figure. The number of RBs expected by the UE determined by the second obtaining unit 402 is 3, so the size of the search window can be determined to be 3 RBs, and the search module 4031 has a search window of 3 RBs in size. A frequency resource segment in which the frequency unit is continuous and unoccupied is determined in the manner of frequency shifting to the low frequency or from the low frequency to the high frequency. Referring to FIG. 3, a total of seven candidate frequency resource segments are determined in this embodiment. Certainly, there are many ways to search for a candidate frequency resource segment, which is not limited by the embodiment of the present invention.

Exemplarily, if the scheduling requirement of the UE is: when at least one frequency unit is required to be discontinuous, the search module 4031 may search, on the uplink channel, all the different resource units that are not occupied and contain the scheduling requirement number of the UE. Frequency resource segment.

For example, still referring to FIG. 3, there are 15 RBs illustrated in the figure, wherein the unoccupied RBs include RB1, RB3, RB4, RB6, RB7, RB8, RB10, RB11, RB12, RB13, RB14, RB15, UE. The scheduling requirement is 3 RBs, and the eNB counts any combination of three different RBs in the unoccupied RB, and each combination constitutes one frequency resource segment.

The calculating module 4032 is configured to calculate an equivalent interference noise value of each of the candidate frequency resource segments according to an interference noise value on each frequency unit included in each of the candidate frequency resource segments;

Further, when the interference noise value of the RB acquired by the first acquiring unit 401 is a linear domain, the calculation module 4032 converts the interference noise value of the RB into a dB domain, and then according to the RB included in each candidate frequency resource segment. Interference noise value calculates an equivalent interference noise value of each candidate frequency resource segment;

When the interference noise value of the RB acquired by the first acquiring unit 401 is a dB domain, the calculation module 4032 directly calculates the equivalent interference of each candidate frequency resource segment according to the interference noise value of the RB included in each candidate frequency resource segment. Noise value.

Exemplarily, referring to FIG. 3, assuming that the ith RB interference noise value acquired by the obtaining unit 401 is INi, the calculation module 4032 calculates the equivalent interference noise value by: (1) calculating an equivalent interference noise value according to a reciprocal of the interference noise value of the RB included in the candidate frequency resource segment;

For example, if the candidate frequency resource segment 1 includes RB1, the equivalent interference noise value of the candidate frequency resource segment 1 is 1/IN _{1 ;}

(2) calculating an equivalent interference noise value according to an average of the reciprocal sum of the interference noise values of the RBs included in the candidate frequency resource segment; for example, if the candidate frequency resource segment 1 includes RB1, the equivalent of the candidate frequency resource segment 1 The interference noise value is 1/IN _{1 ;}

The candidate frequency resource segment 2 includes RB3 and RB4, then the candidate frequency resource segment 2, etc. The effective interference noise value is IN ₃ +IN ₄ ;

(4) calculating an equivalent interference noise value according to an average of a sum of interference noise values of the RBs included in the candidate frequency resource segment;

For example, if the candidate frequency resource segment 1 includes RB1, the equivalent interference noise value of the candidate frequency resource segment 1 is IN _1;

The candidate frequency resource segment 2 includes RB3 and RB4, and the equivalent interference noise value of the candidate frequency resource segment 2 is (IN ₃ +IN ₄ ) 12;

The candidate frequency resource segment 3 includes RB6, RB7, and RB8, and the equivalent interference noise value of the candidate frequency resource segment 3 is (IN ₆ +IN ₇ +IN ₈ )/3;

By analogy, the equivalent interference noise values of other candidate frequency resource segments can be obtained, which are not listed here. The determining module 4033 is configured to determine, according to the equivalent interference noise value of each candidate frequency resource segment, a frequency resource segment with the least interference.

Exemplarily, when the calculation module 4032 calculates the equivalent interference noise according to the reciprocal sum of the interference noise values of the RBs included in the candidate frequency resource segment, or according to the reciprocal sum of the interference noise values of the RBs included in the candidate frequency resource segment. When the value is determined, the determining module 4033 determines that the candidate frequency resource segment with the largest equivalent interference noise value is the frequency resource segment with the smallest interference, and further, if the calculating module 4032 calculates the equivalent of the two or more candidate frequency resource segments. The interference noise value is the same and the maximum, and the determining module 4033 determines that the firstly searched equivalent interference noise value is the same and the largest candidate frequency resource segment is the frequency resource segment with the smallest interference.

Exemplarily, when the calculating module 4032 is involved in the interference of the RB included in the candidate frequency resource segment If the sum of the noise values, or the equivalent interference noise value is calculated according to the average of the sum of the interference noise values of the RBs included in the candidate frequency resource segment, the determining module 4033 determines the candidate frequency resource with the smallest equivalent interference noise value. The segment is the frequency resource segment with the least interference. Further, if the equivalent interference noise value of the two or more candidate frequency resource segments calculated by the calculation module 4032 is the same and the smallest, the determining module 4033 determines the first searched equivalent. The candidate frequency resource segments with the same interference frequency and the smallest interference are the frequency resource segments with the least interference.

The allocating unit 404 is configured to allocate the frequency resource segment with the smallest interference that is searched to the UE.

Exemplarily, after allocating the frequency resource segment with the smallest interference searched by the search unit 403 to the UE, the allocating unit 404 may send an uplink scheduling (UL Grant) indication to the UE, and indicate to the UE the frequency resource with the least interference. The location of the segment is such that the UE obtains the location of the frequency resource segment with the least interference according to the uplink scheduling (UL Grant) indication, and transmits the uplink data at the location of the frequency resource segment with the least interference.

Further, in a case that the allocated frequency resource segments are not necessarily continuous, the searching unit 403 may be further configured to: search for unoccupied frequency units on the uplink channel, and use the unoccupied frequency units according to interference noise. The size of the value is sorted, and the frequency unit with the smallest interference noise value and the same number of scheduling requirements of the UE is selected as the frequency resource segment with the smallest interference. In addition, if the eNB searches for the number of unoccupied frequency units on the uplink channel that is smaller than the number of scheduling requirements of the UE, all unoccupied frequency units are used as the frequency resource segment with the least interference.

A resource allocation device according to another embodiment of the present invention may include a memory and a processor, where the memory stores code for implementing some or all of the steps in the foregoing method embodiment, and the processor is configured to execute the memory stored in the memory. Code.

The resource allocation device provided by the embodiment of the present invention only needs to acquire the interference noise value on each frequency unit to implement resource scheduling, thereby effectively improving scheduling efficiency and throughput of the cell. The drawback that the prior art must obtain the signal of the user on each frequency unit can be overcome. A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

Rights request

1. A resource allocation method, characterized by including:

Obtain the interference noise value of the user equipment UE on each frequency unit of the uplink channel or downlink channel;

Obtain the scheduling requirements of the UE;

Search the frequency resource segment with the least interference according to the interference noise value on each frequency unit and the scheduling requirements of the UE, and the frequency resource segment includes at least one frequency unit;

Allocate the searched frequency resource segment with minimal interference to the UE.

2. The resource allocation method according to claim 1, characterized in that, said searching for a frequency resource segment with minimal interference based on the interference noise value on each frequency unit and the scheduling requirements of the UE includes:

Search and determine candidate frequency resource segments according to the scheduling requirements of the UE;

Calculate the equivalent interference noise value of each candidate frequency resource segment based on the interference noise value on each frequency unit included in each of the candidate frequency resource segments;

The frequency resource segment with the smallest interference is determined based on the equivalent interference noise value of each candidate frequency resource segment.

3. The resource allocation method according to claim 2, characterized in that: each candidate frequency resource segment is calculated according to the interference noise value on each frequency unit included in each candidate frequency resource segment. The equivalent interference noise value includes:

When the interference noise value of the frequency unit is in the linear domain, the interference noise value of the frequency unit is converted into the decibel dB domain, and then calculated based on the interference noise value of the frequency unit included in each of the candidate frequency resource segments. The equivalent interference noise value of each candidate frequency resource segment; or,

When the interference noise value of the resource block is in the dB domain, directly according to each candidate The interference noise value of the frequency unit included in the frequency resource segment is used to calculate the equivalent interference noise value of each candidate frequency resource segment.

4. The resource allocation method according to claim 3, characterized in that, the equivalent interference noise value of the candidate frequency resource segment is the reciprocal sum of the interference noise values of the frequency units included in the candidate frequency resource segment, Or it is the average value of the reciprocal sum of the interference noise values of the frequency units included in the candidate frequency resource segment.

5. The resource allocation method according to claim 4, characterized in that: determining the frequency resource segment with minimum interference based on the equivalent interference noise value of each candidate frequency resource segment includes:

The candidate frequency resource segment with the largest equivalent interference noise value is determined to be the frequency resource segment with the smallest interference.

6. The resource allocation method according to claim 5, characterized in that: determining the frequency resource segment with minimum interference based on the equivalent interference noise value of each candidate frequency resource segment further includes:

If the equivalent interference noise value of two or more candidate frequency resource segments is the same and is the largest, then the first searched candidate frequency resource segment with the same and largest equivalent interference noise value is determined to be the frequency resource with the smallest interference. part.

7. The resource allocation method according to claim 3, characterized in that, the equivalent interference noise value of the candidate frequency resource segment is the sum of the interference noise values of the frequency units included in the candidate frequency resource segment, or The average value of the sum of interference noise values of the frequency units included in the candidate frequency resource segment.

8. The resource allocation method according to claim 7, characterized in that: determining the frequency resource segment with minimum interference based on the equivalent interference noise value of each candidate frequency resource segment includes:

Determine the frequency resource segment of the candidate with the smallest equivalent interference noise value as the frequency with the smallest interference Resource segment.

9. The resource allocation method according to claim 8, characterized in that: determining the frequency resource segment with minimum interference based on the equivalent interference noise value of each candidate frequency resource segment further includes:

If the equivalent interference noise values of two or more candidate frequency resource segments are the same and smallest, then the first searched candidate frequency resource segment with the same and smallest equivalent interference noise values is determined to be the frequency resource with the smallest interference. part.

10. The resource allocation method according to any one of claims 2 to 9, characterized in that when the frequency resource segment contains at least one continuous frequency unit, the search determines the candidate according to the scheduling requirements of the UE. Frequency resource segments, including:

A window search method is used to determine candidate frequency resource segments on the uplink channel or downlink channel, where the size of the search window of the window search is determined according to the scheduling requirements of the UE.

11. The resource allocation method according to any one of claims 2 to 9, characterized in that, when the frequency resource segment contains at least one discontinuous frequency unit, the search determines candidates according to the scheduling requirements of the UE. frequency resource segments, including:

Search and count all unoccupied frequency resource segments on the uplink channel or downlink channel that contain the number of resource units required by the UE for scheduling.

12. The resource allocation method according to claim 1, characterized in that when the scheduling requirement of the UE requires one frequency unit or multiple discontinuous frequency units, the resource allocation method based on the frequency unit on each frequency unit is The interference noise value and the scheduling requirements of the UE search for the frequency resource segment with the least interference, including:

Search for unoccupied frequency units on the uplink channel or downlink channel, and select frequency units with the same number as the UE's scheduling requirements according to the order of interference noise values of the unoccupied frequency units from small to large. Frequency resource segment with minimal interference.

13. A resource allocation device, characterized by including: The first acquisition unit is used to acquire the interference noise value of the user equipment UE on each frequency unit of the uplink channel or the downlink channel;

The second acquisition unit is used to acquire the scheduling requirements of the UE;

A search unit configured to search for a frequency resource segment with minimal interference based on the interference noise value on each frequency unit and the scheduling requirements of the UE, where the frequency resource segment includes at least one frequency unit;

An allocation unit, configured to allocate the searched frequency resource segment with minimal interference to the

UE.

14. The resource allocation device according to claim 13, characterized in that the search unit includes:

A search module, configured to search and determine candidate frequency resource segments according to the scheduling requirements of the UE;

A calculation module, configured to calculate the equivalent interference noise value of each candidate frequency resource segment based on the interference noise value on each frequency unit included in each of the candidate frequency resource segments;

A determining module, configured to determine the frequency resource segment with the smallest interference based on the equivalent interference noise value of each candidate frequency resource segment.

15. The resource allocation device according to claim 14, characterized in that the computing module is also used to:

When the interference noise value of the resource block is in the dB domain, each candidate frequency resource is calculated directly based on the interference noise value of the frequency unit included in each candidate frequency resource segment. The equivalent interference noise value of the segment.

16. The resource allocation device according to claim 15, characterized in that, the equivalent interference noise value of the candidate frequency resource segment is the reciprocal sum of the interference noise values of the frequency units included in the candidate frequency resource segment, Or it is the average value of the reciprocal sum of the interference noise values of the frequency units included in the candidate frequency resource segment.

17. The resource allocation device according to claim 16, wherein the determination module is further configured to: determine that the candidate frequency resource segment with the largest equivalent interference noise value is the frequency resource segment with the smallest interference.

18. The resource allocation device according to claim 17, wherein the determination module is further configured to: if the equivalent interference noise values of two or more candidate frequency resource segments are the same and maximum, determine The candidate frequency resource segment with the same and largest equivalent interference noise value that is searched first is the frequency resource segment with the smallest interference.

19. The resource allocation device according to claim 15, characterized in that: the equivalent interference noise value of the candidate frequency resource segment is the sum of interference noise values of frequency units included in the candidate frequency resource segment, or The average value of the sum of interference noise values of the frequency units included in the candidate frequency resource segment.

20. The resource allocation device according to claim 19, characterized in that the determination module is further configured to: determine the candidate frequency resource segment with the smallest equivalent interference noise value as the frequency resource segment with the smallest interference.

21. The resource allocation device according to claim 20, wherein the determination module is further configured to: if the equivalent interference noise values of two or more candidate frequency resource segments are the same and smallest, determine The first searched candidate frequency resource segment with the same and smallest equivalent interference noise value is the frequency resource segment with the smallest interference.

22. The resource allocation device according to any one of claims 14 to 21, wherein the search module is further configured to: when the frequency resource segment contains at least one continuous frequency unit, A window search method is used to determine candidate frequency resource segments on the uplink channel or downlink channel, where the size of the search window of the window search is determined according to the scheduling requirements of the UE.

23. The resource allocation device according to any one of claims 14 to 21, characterized in that the search module is further configured to: when the frequency resource segment contains at least one discontinuous frequency unit, in the uplink Search and count all unoccupied frequency resource segments on the channel or downlink channel that contain the number of resource units required by the UE for scheduling.

24. The resource allocation device according to claim 13, characterized in that, the search unit is also used to: search for unoccupied frequency units on the uplink channel or downlink channel, according to the interference of the unoccupied frequency units In ascending order of noise values, frequency units with the same number as the UE's scheduling requirements are selected as frequency resource segments with minimal interference.