CN110881219B - Uplink resource allocation method and device - Google Patents

Uplink resource allocation method and device Download PDF

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CN110881219B
CN110881219B CN201811035922.0A CN201811035922A CN110881219B CN 110881219 B CN110881219 B CN 110881219B CN 201811035922 A CN201811035922 A CN 201811035922A CN 110881219 B CN110881219 B CN 110881219B
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uplink
resources
uplink subframe
subframe
idle
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CN110881219A (en
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张光伟
方伟
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Chengdu TD Tech Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The application discloses an uplink resource allocation method and device, wherein the method comprises the following steps: for User Equipment (UE) to be scheduled, a base station determines whether the transmission requirement of the UE can be met by only utilizing one uplink subframe in a TDD subframe ratio 0 mode; when only one uplink subframe can meet the transmission requirement of the UE, the base station configures the uplink resource for the UE by using the idle resource on the uplink subframe which can meet the transmission requirement of the UE; and when the transmission requirement of the UE cannot be met by only using one uplink subframe, the base station configures the uplink resources for the UE by using the idle resources on two uplink subframes. The invention is beneficial to saving CCE resources in a private network system and improving the utilization rate of the CCE resources.

Description

Uplink resource allocation method and device
Technical Field
The present invention relates to mobile communication technologies, and in particular, to a method and an apparatus for allocating uplink resources in a private network system.
Background
In a private network cluster system, the trend of broadband and digitization is more and more competitive, and the market demand is met. The TD-LTE is a competitive new technology and has the characteristics of high spectrum efficiency, high system performance, low system delay and the like, so that the private network technology based on the TD-LTE technology is the development direction of a digital trunking system.
In a private network system, some industry applications have a high requirement for uplink data, such as: and (5) video monitoring. This requires providing relatively strong uplink support based on the clustering function. In the TD-LTE standard, 7 uplink and downlink (UL/DL) ratios are provided, where each radio frame in ratio 0 has the most uplink subframes, 6 uplink subframes, 2 downlink subframes, and 2 special subframes. Since the uplink sub-frame is more than the downlink frame, the situation that one downlink sub-frame schedules two uplink sub-frames inevitably occurs. Therefore, Control Channel Element (CCE) limitation is easily caused under the condition of small bandwidth (such as 5M), so that a Physical Downlink Control Channel (PDCCH) command cannot be issued, and the problem of CCE limitation is solved.
In the existing uplink scheduling scheme, an uplink scheduling command is issued to the UE by the eNodeB through the DCI 0 format, and the UL Index is used in the DCI 0 to indicate which one or two uplink subframes need to be scheduled, and the field only takes effect for the ratio 0.
In the existing uplink scheduling scheme, dynamic scheduling is fixed on an uplink subframe n + k for scheduling, that is, a scheduling command is issued on the subframe n, and uplink data is transmitted on the subframe n + k. When the amount of data that needs to be uploaded by the UE (i.e., the amount of buffer data indicated by the buffer status report BSR) is large, so that the data indicated by the BSR cannot be scheduled in the subframe n + k, scheduling is performed on the uplink subframe n +7, and at this time, two uplink subframes n + k and n +7 are scheduled to transmit uplink data to be transmitted of the UE. When two uplink subframes n + k and n +7 need to be scheduled, there are two scheduling modes, one is to respectively schedule the uplink subframes n + k and n +7 by issuing two PDCCH commands, at this time, the corresponding PDCCH commands are: the UL Index is 01 or 10, and the other is to issue only one PDCCH order and schedule uplink subframes n + k and n +7 at the same time, where the corresponding PDCCH order is: UL Index is 11. For the scheduling mode of issuing only one PDCCH order, the use condition is that the available Resource Blocks (RBs) on the subframes n + k and n +7 have the same position, i.e. the corresponding frequency domain resources are consistent, so that different uplink subframes can be scheduled by using one PDCCH order. Although the latter scheduling method can effectively save the downlink control resource CCE, due to the limitation of the use condition, there is little chance that this scheduling method can be adopted in practical applications. Therefore, when the amount of data to be transmitted of a user is large, the uplink subframes n + k and n +7 are generally scheduled by issuing two PDCCH commands, so that CCE resources are high in cost and limited, and the PDCCH commands cannot be issued, and further the transmission requirements of private network users cannot be met.
Disclosure of Invention
In view of this, the present invention mainly aims to provide an uplink resource allocation method and apparatus, which are beneficial to saving CCE resources in a private network system and improving CCE resource utilization.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
an uplink resource allocation method includes:
for User Equipment (UE) to be scheduled, a base station determines whether the transmission requirement of the UE can be met by only utilizing one uplink subframe in a TDD subframe ratio 0 mode;
when only one uplink subframe can meet the transmission requirement of the UE, the base station configures the uplink resource for the UE by using the idle resource on the uplink subframe which can meet the transmission requirement of the UE;
and when the transmission requirement of the UE cannot be met by only using one uplink subframe, the base station configures the uplink resources for the UE by using the idle resources on two uplink subframes.
Preferably, the determining whether the transmission requirement of the UE can be met by using one uplink subframe includes:
the base station calculates the expected scheduling resource block RB quantity E of the UE on an uplink subframe n + k when the UE is scheduled by only using one uplink subframe 10 And the desired number of scheduled RBs E of the UE on uplink subframe n +7 01 (ii) a Wherein n is a downlink subframe number for issuing an uplink scheduling command, and k is a preset scheduling interval subframe number;
if E is 10 ＞N n+k And E 01 ＞N n+7 If so, the transmission requirement of the UE cannot be met by only using one uplink subframe; wherein N is n+k The number of idle RBs on the uplink subframe n + k; n is a radical of n+7 The number of idle RBs on the uplink subframe n + 7;
if E is 10 ≤N n+k Then, the transmission requirement of the UE can be satisfied only by using the uplink subframe n + k;
if E is 01 ≤N n+7 Then, the transmission requirement of the UE can be satisfied only by using the uplink subframe n + 7.
Preferably, the configuring uplink resources for the UE by using idle resources on an uplink subframe that can meet the transmission requirement of the UE includes:
if the transmission requirement of the UE can be met only by utilizing the uplink subframe n + k, configuring uplink resources for the UE by utilizing idle resources on the uplink subframe n + k; otherwise, the idle resource on the uplink subframe n +7 is used for configuring the uplink resource for the UE.
Preferably, the configuring uplink resources for the UE by using idle resources on two uplink subframes includes:
calculating the expected scheduling resource block RB quantity E of the UE on an uplink subframe n + k when the UE is scheduled by two uplink subframes by adopting a method for uniformly distributing resources 11 1 And the desired number of scheduled RBs E of the UE on uplink subframe n +7 11 2 ；
If E can be searched in the public idle RB resources on the uplink subframe n + k 11 1 The number of resources is large, and E can be searched in the common idle RB resource on the uplink subframe n +7 11 2 And if the number of resources is large, configuring uplink resources for the UE by using the searched resources, otherwise, respectively configuring the uplink resources for the UE by using idle resources on uplink subframes n + k and n + 7.
Preferably, said E 11 1 And said E 11 2 The calculating method comprises the following steps:
according to
Figure BDA0001790651720000041
Calculating an expected amount d of scheduling data on a single uplink subframe when the UE is scheduled using only two uplink subframes (u) (ii) a Wherein, BS (u) For the amount of pending data indicated in the buffer status report of the UE, GBR _ BS (u) is the guaranteed bit rate of the UE, AGBR _ token _ size (u) is the sum of all GBR traffic to be scheduled data of the UE,
Figure BDA0001790651720000042
the maximum data volume which can be sent by the preset UE in a single transmission time interval TTI;
respectively carrying out signal to interference and noise ratio (SINR) on uplink subframes n + k and n +7 according to the UE n+k And SINR n+7 Calculating the corresponding expected RB number
Figure BDA0001790651720000043
And
Figure BDA0001790651720000044
calculating the number of RBs that the UE can upload according to the power headroom of the UE
Figure BDA0001790651720000045
According to
Figure BDA0001790651720000046
Is calculated to obtain
Figure BDA0001790651720000047
According to
Figure BDA0001790651720000048
Is calculated to obtain
Figure BDA0001790651720000049
Wherein M is min Is the preset minimum number of transmission RBs on a single uplink subframe.
An uplink resource allocation apparatus, comprising:
the system comprises a judging unit and a scheduling unit, wherein the judging unit is used for determining whether the transmission requirement of User Equipment (UE) to be scheduled can be met by only utilizing one uplink subframe in a Time Division Duplex (TDD) subframe ratio 0 mode;
a resource allocation unit, configured to, when only one uplink subframe can meet the transmission requirement of the UE, configure, by the base station, an uplink resource for the UE by using an idle resource on the uplink subframe that can meet the transmission requirement of the UE; and when the transmission requirement of the UE cannot be met by only using one uplink subframe, configuring uplink resources for the UE by using idle resources on two uplink subframes.
Preferably, the determining unit is configured to calculate the number E of desired resource blocks RB to be scheduled by the UE on an uplink subframe n + k when the UE is scheduled by using only one uplink subframe 10 And the desired number of scheduled RBs E of the UE on uplink subframe n +7 01 (ii) a Wherein n is a downlink subframe number for issuing an uplink scheduling command, and k is a preset scheduling interval subframe number;
if E 10 ＞N n+k And E 01 ＞N n+7 If so, the transmission requirement of the UE cannot be met by only using one uplink subframe; wherein N is n+k The number of idle RBs on the uplink subframe n + k; n is a radical of n+7 The number of idle RBs on the uplink subframe n + 7;
if E is 10 ≤N n+k Then, the transmission requirement of the UE can be satisfied only by using the uplink subframe n + k;
if E is 01 ≤N n+7 Then, the transmission requirement of the UE can be satisfied only by using the uplink subframe n + 7.
Preferably, the resource allocation unit is configured to configure uplink resources for the UE by using idle resources on an uplink subframe n + k if the transmission requirement of the UE can be met only by using the uplink subframe n + k; otherwise, the idle resource on the uplink subframe n +7 is used for configuring the uplink resource for the UE.
Preferably, the resource allocation unit is configured to calculate the number E of resource blocks RB expected to be scheduled by the UE on the uplink subframe n + k when the UE is scheduled by using two uplink subframes by using a method for uniformly allocating resources 11 1 And the desired number of scheduled RBs E of the UE on uplink subframe n +7 11 2 (ii) a If E can be searched in the public idle RB resources on the uplink subframe n + k 11 1 The number of resources is large, and E can be searched in the common idle RB resource on the uplink subframe n +7 11 2 And if the number of resources is large, configuring uplink resources for the UE by using the searched resources, otherwise, respectively configuring the uplink resources for the UE by using idle resources on uplink subframes n + k and n + 7.
Preferably, the resource allocation unit is configured to allocate resources according to
Figure BDA0001790651720000051
Calculating an expected amount d of scheduling data on a single uplink subframe when the UE is scheduled using only two uplink subframes (u) (ii) a Wherein, BS (u) GBR _ Bs (u) is the guaranteed bit rate of the UE, AGBR _ token _ size (u) is the sum of all data to be scheduled of GBR services of the UE,
Figure BDA0001790651720000052
the maximum data volume which can be sent by the preset UE in a single transmission time interval TTI; respectively carrying out signal to interference and noise ratio (SINR) on uplink subframes n + k and n +7 according to the UE n+k And SINR n+7 Calculating the corresponding expected RB number
Figure BDA0001790651720000053
And
Figure BDA0001790651720000054
calculating the number of RBs that the UE can upload according to the power headroom of the UE
Figure BDA0001790651720000055
According to the following
Figure BDA0001790651720000056
Is calculated to obtain
Figure BDA0001790651720000057
According to
Figure BDA0001790651720000061
Is calculated to obtain
Figure BDA0001790651720000062
Wherein M is min Is the preset minimum number of transmission RBs on a single uplink subframe.
In summary, the uplink resource allocation method and apparatus provided by the present invention utilize one uplink subframe to schedule the UE as much as possible in the TDD subframe configuration 0 mode, so that CCE resource overhead can be effectively reduced, CCE resources in the private network system can be effectively saved, and CCE resource utilization is improved. In addition, when the two uplink subframes are used for scheduling the UE, the mode of uniformly distributing resources on the two subframes is preferentially adopted, CCE resources in a private network system can be further saved, and the utilization rate of the CCE resources is improved.
Drawings
FIG. 1 is a schematic flow chart of a method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic flowchart of a method according to an embodiment of the present invention, and as shown in fig. 1, the uplink resource allocation method implemented in the embodiment mainly includes:
step 101, for a user equipment UE to be scheduled, a base station determines whether transmission requirements of the UE can be met by using only one uplink subframe in a TDD subframe configuration 0 mode.
In this step, different from the existing scheme, it is preferable to consider that only one uplink subframe is used to meet the transmission requirement of the UE, that is, not only whether the UE can be scheduled by using only the resource on the uplink subframe n + k but also whether the UE can be scheduled by using only the resource on the uplink subframe n +7 is considered, so as to reduce the overhead of the CCE resource to the maximum extent.
Preferably, the following method may be adopted to determine whether the transmission requirement of the UE can be satisfied by using one uplink subframe:
step 1011, the base station calculates the number E of expected scheduling resource blocks RB on the uplink subframe n + k when the UE is scheduled by only using one uplink subframe 10 And the desired number of scheduled RBs E of the UE on uplink subframe n +7 01 (ii) a Wherein n is a downlink subframe number of the issued uplink scheduling command, and k is a preset scheduling interval subframe number.
In the above steps, the measured values are respectively countedNumber of RBs E needed to schedule a UE using only RBs on uplink subframe n + k 10 And the number of RBs E required for scheduling a UE using only RBs on uplink subframe n +7 01 So as to be based on E in the subsequent step 10 And E 01 And judging whether the transmission requirement of the UE can be met by only one uplink subframe.
In practical applications, the K may be set according to the definition of the value of K in the 3GPP TS 36.213 protocol.
Step 1012, if E 10 ＞N n+k And E 01 ＞N n+7 Then, the transmission requirement of the UE cannot be satisfied by only one uplink subframe.
Wherein N is n+k The number of idle RBs on the uplink subframe n + k; n is a radical of n+7 The number of idle RBs on the uplink subframe n + 7.
If E is 10 ≤N n+k Then, the transmission requirement of the UE can be satisfied by only using the uplink subframe n + k.
If E 01 ≤N n+7 Then, the transmission requirement of the UE can be satisfied only by using the uplink subframe n + 7.
Step 102, when only one uplink subframe can meet the transmission requirement of the UE, the base station configures the uplink resource for the UE by using the idle resource on the uplink subframe which can meet the transmission requirement of the UE; and when the transmission requirement of the UE cannot be met by only using one uplink subframe, the base station configures the uplink resources for the UE by using the idle resources on two uplink subframes.
Preferably, when only one uplink subframe can meet the transmission requirement of the UE, the resource on the uplink subframe n + k may be preferentially utilized to schedule the UE, and at this time, the following method may be specifically adopted to configure the uplink resource for the UE by utilizing the idle resource on the uplink subframe that can meet the transmission requirement of the UE:
if the transmission requirement of the UE can be met only by utilizing the uplink subframe n + k, configuring uplink resources for the UE by utilizing idle resources on the uplink subframe n + k; otherwise, the idle resource on the uplink subframe n +7 is used for configuring the uplink resource for the UE.
Preferably, when the transmission requirement of the UE cannot be met by using only one uplink subframe, the following method may be adopted to configure uplink resources for the UE by using idle resources on two uplink subframes:
calculating the expected scheduling resource block RB quantity E of the UE on an uplink subframe n + k when the UE is scheduled by using two uplink subframes by adopting a method for uniformly distributing resources 11 1 And the desired number of scheduled RBs E of the UE on uplink subframe n +7 11 2 ；
If E can be searched in the public idle RB resources on the uplink subframe n + k 11 1 The number of resources is large, and E can be searched in the common idle RB resource on the uplink subframe n +7 11 2 And if the number of resources is large, configuring uplink resources for the UE by using the searched resources, otherwise, respectively configuring the uplink resources for the UE by using idle resources on uplink subframes n + k and n + 7.
In the method, when it is required to consider that the UE is configured with uplink resources by using idle resources on two uplink subframes, a method of uniformly allocating resources is preferentially adopted, and the UE is scheduled by using the uplink subframe n + k and the uplink subframe n +7, so that the UE can share RB resources at the same resource position as much as possible and have the same UL Grant fields such as RIV, and thus the probability of using UL Index 11 can be increased, that is, the probability of scheduling different uplink subframes by using one PDCCH command is increased, and thus the downlink control resources CCE can be effectively saved by using UL Index 11 to the maximum extent.
In addition, when the UE cannot be scheduled by the method of uniformly allocating resources on two subframes, the UE is configured with uplink resources by using the idle resources on the uplink subframes N + K and N +7, for example, the uplink resources that can be configured on N + K may be calculated according to the total data transmission requirement of the UE, and then the uplink resources that can be configured on N +7 may be calculated according to the remaining data to be transmitted based on the calculation result.
Preferably, the method can be carried out by the following method 11 1 And E 11 2 The calculation of (2):
x1, according to
Figure BDA0001790651720000081
Calculating an expected amount d of scheduling data on a single uplink subframe when the UE is scheduled using only two uplink subframes (u) (ii) a Wherein, BS (u) GBR _ BS (u) is the guaranteed bit rate of the UE, AGBR _ token _ size (u) is the sum of all data to be scheduled of GBR service of the UE,
Figure BDA0001790651720000082
is the preset maximum data quantity which can be sent by the UE in a single transmission time interval TTI.
X2, respectively carrying out signal to interference and noise ratio SINR on uplink sub-frames n + k and n +7 according to the UE n+k And SINR n+7 Calculating the corresponding expected RB number
Figure BDA0001790651720000091
And
Figure BDA0001790651720000092
x3, calculating the number of RBs that the UE can upload according to the power margin of the UE
Figure BDA0001790651720000093
X4, according to
Figure BDA0001790651720000094
Is calculated to obtain
Figure BDA0001790651720000095
According to
Figure BDA0001790651720000096
Is calculated to obtain
Figure BDA0001790651720000097
Wherein M is min Is a preset single uplink sub-unitThe minimum number of transmission RBs over the frame.
It can be seen from the above embodiments that, in the above scheme, by scheduling the UE using one uplink subframe as much as possible, the utilization of CCE resources can be effectively reduced, so that CCE resources in a private network system can be effectively saved. In addition, when the two uplink subframes are used for scheduling the UE, the mode of uniformly distributing resources on the two subframes is preferentially adopted, so that CCE resources in a private network system can be further saved, and the utilization rate of the CCE resources is improved.
Fig. 2 is a schematic structural diagram of an uplink resource allocation apparatus corresponding to the foregoing method, and as shown in fig. 2, the apparatus includes:
the system comprises a judging unit and a scheduling unit, wherein the judging unit is used for determining whether the transmission requirement of User Equipment (UE) to be scheduled can be met by only utilizing one uplink subframe in a Time Division Duplex (TDD) subframe ratio 0 mode;
a resource allocation unit, configured to, when only one uplink subframe can meet the transmission requirement of the UE, configure, by the base station, an uplink resource for the UE by using an idle resource on the uplink subframe that can meet the transmission requirement of the UE; and when the transmission requirement of the UE cannot be met by only using one uplink subframe, configuring uplink resources for the UE by using idle resources on two uplink subframes.
Preferably, the determining unit is configured to calculate the number E of desired resource blocks RB to be scheduled by the UE on an uplink subframe n + k when the UE is scheduled by using only one uplink subframe 10 And the desired number of scheduled RBs E of the UE on uplink subframe n +7 01 (ii) a Wherein n is a downlink subframe number for issuing an uplink scheduling command, and k is a preset scheduling interval subframe number;
if E is 10 ＞N n+k And E 01 ＞N n+7 If so, the transmission requirement of the UE cannot be met by only using one uplink subframe; wherein N is n+k The number of idle RBs on the uplink subframe n + k; n is a radical of n+7 The number of idle RBs on the uplink subframe n + 7;
if E 10 ≤N n+k Then, the transmission requirement of the UE can be satisfied only by using the uplink subframe n + k;
if E is 01 ≤N n+7 Then, the transmission requirement of the UE can be satisfied only by using the uplink subframe n + 7.
Preferably, the resource allocation unit is configured to configure uplink resources for the UE by using idle resources on an uplink subframe n + k if the transmission requirement of the UE can be met only by using the uplink subframe n + k; otherwise, the idle resource on the uplink subframe n +7 is used for configuring the uplink resource for the UE.
Preferably, the resource allocation unit is configured to calculate the number E of resource blocks RB expected to be scheduled by the UE on the uplink subframe n + k when the UE is scheduled by using two uplink subframes by using a method for uniformly allocating resources 11 1 And the desired number of scheduled RBs E of the UE on uplink subframe n +7 11 2 (ii) a If E can be searched in the public idle RB resources on the uplink subframe n + k 11 1 The number of resources is large, and E can be searched in the common idle RB resource on the uplink subframe n +7 11 2 And if the number of resources is large, configuring uplink resources for the UE by using the searched resources, otherwise, respectively configuring the uplink resources for the UE by using idle resources on uplink subframes n + k and n + 7.
Preferably, the resource allocation unit is configured to allocate resources according to
Figure BDA0001790651720000101
Calculating an expected amount d of scheduling data on a single uplink subframe when the UE is scheduled using only two uplink subframes (u) (ii) a Wherein, BS (u) GBR _ BS (u) is the guaranteed bit rate of the UE, AGBR _ token _ size (u) is the sum of all data to be scheduled of GBR service of the UE,
Figure BDA0001790651720000102
the maximum data volume which can be sent by the preset UE in a single transmission time interval TTI; respectively carrying out signal to interference and noise ratio (SINR) on uplink subframes n + k and n +7 according to the UE n+k And SINR n+7 Calculating the corresponding expected RB number
Figure BDA0001790651720000103
And
Figure BDA0001790651720000104
calculating the number of RBs that the UE can upload according to the power headroom of the UE
Figure BDA0001790651720000105
According to
Figure BDA0001790651720000106
Is calculated to obtain
Figure BDA0001790651720000107
According to the following
Figure BDA0001790651720000108
Is calculated to obtain the
Figure BDA0001790651720000109
Wherein M is min Is the preset minimum number of transmission RBs on a single uplink subframe.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. An uplink resource allocation method, comprising:
for User Equipment (UE) to be scheduled, a base station determines whether the transmission requirement of the UE can be met by only utilizing one uplink subframe in a TDD subframe ratio 0 mode;
when only one uplink subframe can meet the transmission requirement of the UE, the base station configures the uplink resource for the UE by using the idle resource on the uplink subframe which can meet the transmission requirement of the UE;
when the transmission requirement of the UE cannot be met by only using one uplink subframe, the base station configures uplink resources for the UE by using idle resources on two uplink subframes;
wherein the configuring uplink resources for the UE by using idle resources on two uplink subframes includes:
calculating the expected scheduling resource block RB quantity E of the UE on an uplink subframe n + k when the UE is scheduled by two uplink subframes by adopting a method for uniformly distributing resources 11 1 And the desired number of scheduled RBs E of the UE on uplink subframe n +7 11 2 ；
If E can be searched in the public idle RB resources on the uplink subframe n + k 11 1 The number of resources is large, and E can be searched in the common idle RB resource on the uplink subframe n +7 11 2 If the number of resources is large, configuring uplink resources for the UE by using the searched resources, otherwise, respectively configuring the uplink resources for the UE by using idle resources on uplink subframes n + k and n + 7;
said E 11 1 And said E 11 2 The calculating method comprises the following steps:
according to
Figure FDA0003646639050000011
Calculating an expected amount d of scheduling data on a single uplink subframe when the UE is scheduled using only two uplink subframes (u) (ii) a Wherein, BS (u) GBR _ BS (u) is the guaranteed bit rate of the UE, AGBR _ token _ size (u) is the sum of all data to be scheduled of GBR service of the UE,
Figure FDA0003646639050000012
the maximum data volume which can be sent by the preset UE in a single transmission time interval TTI;
respectively carrying out signal to interference and noise ratio (SINR) on uplink subframes n + k and n +7 according to the UE n+k And SINR n+7 Calculating the corresponding expected RB number
Figure FDA0003646639050000021
And
Figure FDA0003646639050000022
calculating the number of RBs that the UE can upload according to the power headroom of the UE
Figure FDA0003646639050000023
According to the following
Figure FDA0003646639050000024
Is calculated to obtain the
Figure FDA0003646639050000025
According to
Figure FDA0003646639050000026
Is calculated to obtain
Figure FDA0003646639050000027
Wherein M is min Is the preset minimum number of transmission RBs on a single uplink subframe.
2. The method of claim 1, wherein the determining whether the transmission requirement of the UE can be met by using one uplink subframe comprises:
the base station calculates the expected scheduling resource block RB quantity E of the UE on an uplink subframe n + k when the UE is scheduled by only using one uplink subframe 10 And the desired number of scheduled RBs E of the UE on uplink subframe n +7 01 (ii) a Wherein n is a downlink subframe number for issuing an uplink scheduling command, and k is a preset scheduling interval subframe number;
if E 10 >N n+k And E 01 >N n+7 If so, the transmission requirement of the UE cannot be met by only using one uplink subframe; wherein N is n+k The number of idle RBs on the uplink subframe n + k; n is a radical of n+7 The number of idle RBs on the uplink subframe n + 7;
if E is 10 ≤N n+k Then, the transmission requirement of the UE can be satisfied only by using the uplink subframe n + k;
if E is 01 ≤N n+7 Then, the transmission requirement of the UE can be satisfied only by using the uplink subframe n + 7.
3. The method of claim 1, wherein the configuring uplink resources for the UE by using idle resources on an uplink subframe that can meet the transmission requirement of the UE comprises:
if the transmission requirement of the UE can be met only by utilizing the uplink subframe n + k, configuring uplink resources for the UE by utilizing idle resources on the uplink subframe n + k; otherwise, the idle resource on the uplink subframe n +7 is used for configuring the uplink resource for the UE.
4. An uplink resource allocation apparatus, comprising:
the system comprises a judging unit and a scheduling unit, wherein the judging unit is used for determining whether the transmission requirement of User Equipment (UE) to be scheduled can be met by only utilizing one uplink subframe in a Time Division Duplex (TDD) subframe ratio 0 mode;
a resource allocation unit, configured to, when only one uplink subframe can meet the transmission requirement of the UE, configure uplink resources for the UE by using idle resources on the uplink subframe that can meet the transmission requirement of the UE; when the transmission requirement of the UE cannot be met by only using one uplink subframe, configuring uplink resources for the UE by using idle resources on two uplink subframes, wherein the configuring uplink resources for the UE by using the idle resources on the two uplink subframes comprises: calculating the expected scheduling resource block RB quantity E of the UE on an uplink subframe n + k when the UE is scheduled by using two uplink subframes by adopting a method for uniformly distributing resources 11 1 And the desired number of scheduled RBs E of the UE on uplink subframe n +7 11 2 (ii) a If E can be searched in the public idle RB resources on the uplink subframe n + k 11 1 Number of resources, and common idle RB resource on uplink subframe n +7Can search for E 11 2 If the number of resources is large, configuring uplink resources for the UE by using the searched resources, otherwise, respectively configuring the uplink resources for the UE by using idle resources on uplink subframes n + k and n + 7; said E 11 1 And said E 11 2 The calculating method comprises the following steps: according to
Figure FDA0003646639050000031
Calculating an expected amount d of scheduling data on a single uplink subframe when the UE is scheduled using only two uplink subframes (u) (ii) a Wherein, BS (u) GBR _ BS (u) is the guaranteed bit rate of the UE, AGBR _ token _ size (u) is the sum of all data to be scheduled of GBR service of the UE,
Figure FDA0003646639050000032
the maximum data volume which can be sent by the preset UE in a single transmission time interval TTI; respectively carrying out signal to interference and noise ratio (SINR) on uplink subframes n + k and n +7 according to the UE n+k And SINR n+7 Calculating the corresponding expected RB number
Figure FDA0003646639050000033
And
Figure FDA0003646639050000034
calculating the number of RBs that the UE can upload according to the power headroom of the UE
Figure FDA0003646639050000035
According to the following
Figure FDA0003646639050000036
Is calculated to obtain
Figure FDA0003646639050000037
According to
Figure FDA0003646639050000038
Is calculated to obtain
Figure FDA0003646639050000039
Wherein M is min Is the preset minimum number of transmission RBs on a single uplink subframe.
5. The apparatus of claim 4, wherein the determining unit is configured to calculate the number E of expected scheduling Resource Blocks (RBs) on an uplink subframe n + k for the UE when the UE is scheduled by using only one uplink subframe 10 And the desired number of scheduled RBs E of the UE on uplink subframe n +7 01 (ii) a Wherein n is a downlink subframe number for issuing an uplink scheduling command, and k is a preset scheduling interval subframe number;
if E is 10 >N n+k And E 01 >N n+7 If so, the transmission requirement of the UE cannot be met by only using one uplink subframe; wherein N is n+k The number of idle RBs on the uplink subframe n + k; n is a radical of n+7 The number of idle RBs on the uplink subframe n + 7;
if E is 10 ≤N n+k Then, the transmission requirement of the UE can be satisfied only by using the uplink subframe n + k;
if E is 01 ≤N n+7 Then, the transmission requirement of the UE can be satisfied only by using the uplink subframe n + 7.
6. The apparatus according to claim 4, wherein the resource allocation unit is configured to configure uplink resources for the UE using idle resources on uplink subframe n + k if the transmission requirement of the UE can be met only with uplink subframe n + k; otherwise, the idle resource on the uplink subframe n +7 is used for configuring the uplink resource for the UE.
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