WO2016050166A1

WO2016050166A1 - Semi-persistent scheduling resource allocation method and base station

Info

Publication number: WO2016050166A1
Application number: PCT/CN2015/090578
Authority: WO
Inventors: 王桂英; 刘晓丹
Original assignee: 大唐移动通信设备有限公司
Priority date: 2014-09-30
Filing date: 2015-09-24
Publication date: 2016-04-07
Also published as: CN104244424B; CN104244424A

Abstract

The present invention provides a semi-persistent scheduling resource allocation method and a base station. The method comprises: a base station receives a data packet sent by a UE during a voice call; the base station determines an MCS level and determines packet information of the data packet according to the received data packet, wherein the MCS level is determined by the base station according to a CQI of a channel that is used for the UE to send the data packet, and the packet information comprises a data packet size; the base station determines a data volume of each SPS according to formula I, wherein formula I is: the data volume of each SPS=min{preset maximum data volume of the SPS, the data packet size*[SPS period/data packet arrival period]}; and the base station determines the number of physical resource blocks (PRBs) according to the data volume of each SPS and the MCS level so as to allow the UE to transmit the data packet according to the number of the PRBs. By means of the method and the base station, time delay of a data packet can be reduced and quality of a voice service can be improved.

Description

Method for allocating semi-persistent scheduling resources and base station

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and a base station for allocating semi-persistent scheduling resources.

Background technique

In the communication system, LTE (Long Term Evolution) adopts a shared resource allocation scheduling system. Currently, there are two scheduling modes determined by LTE: Semi-Persistent Scheduling (SPS) and dynamic scheduling.

In the LTE system, the voice service of all circuit domains is cancelled, and the VOIP (Voice over Internet Protocol) service of the data domain is adopted. In the VOIP service, the speech encoder outputs packets according to a fixed period. As shown in FIG. 1, FIG. 1 shows a schematic diagram of VOIP service data transmission. In the transient state, no voice packets need to be scheduled, and dynamic scheduling of other services can be performed at this time; in the talk spurt state, the user is talking, usually generating a data packet every 20 ms, in Silent period. In the (intermittent call) phase, the theory only has a background sound symbol of 160ms once, and there is no voice data scheduling. VOIP data packets are classified according to the coding type. The most commonly used are: WB-AMR (Wide Band adaptive Multi-Rate) broadband HD service with coding efficiency of 23.85K and NB-AMR (Narrow Band adaptive Multi- Rate, adaptive multi-rate narrowband coding) narrowband standard definition service, coding efficiency is 12.2K, and narrowband data packet size is generally 35 to 47 bytes. For the VOIP service data packet periodically arrives and the data packet size is relatively fixed, the SPS is used for the initial transmission data packet during the VOIP activation period, and the SID (Silence Insertion Descriptor) packet and the retransmission packet are used for the silent period. Dynamic scheduling.

In the SPS process, on the base station side, after the VOIP bearer is established, the PDCP (Packet Data Convergence Protocol) layer detects the size of the uplink and downlink data packets and determines the type of the data packet (NB-AMR, WB-AMR). Or the voice format that cannot be recognized, and the information such as the packet size and the header compression is notified to the MAC layer (Media Access Control) through the interface message, and the MAC layer performs SPS resource allocation according to the received information. The base station sends the resource allocation information to the UE (User Equipment), and the UE saves the current resource allocation information, and performs data transmission or reception at the same time-frequency resource location every fixed period.

In the dynamic scheduling process, when data arrives, the base station temporarily allocates resources through resource allocation signaling. For data transmission, the allocated resources are only used for the transmission of the current data.

In the SPS resource allocation process, the base station needs to determine the number of allocated Physical Resource Blocks (Physical Resource Blocks). In the prior art, the base station determines the MCS corresponding to the UE by using a CQI (Channel Quality Indicator). Modulation and Coding Scheme, the level of the 3GPP (3rd Generation Partnership Project) 36.213 protocol, according to the MCS level, for the downlink resource allocation, according to the MCS level lookup table 7.1.7.1 - 1. Find the corresponding TBS Index (Transport Block Size Index); for the uplink resource allocation, find the corresponding TBS Index according to the MCS level lookup table 8.6.1-1; according to the found TBS Index and the received TBS Index The packet size lookup table 7.1.7.2.1-1 finds the closest downlink packet size in the TB size (Transport Block Size) that is not less than the above packet size in the column corresponding to the found TBS Index. The TB size, according to the determined TB size, finds the corresponding number of PRBs, wherein the amount of data scheduled for each SPS is The size of a packet received during a packet arrival period. For example, in the downlink resource allocation, the current MCS level is 7, and the corresponding TBS index is 7 in the table 7.1.7.1-1, and the packet size received in the downlink is 345 bits, and the lookup table is 7.1.7.2-1. The corresponding TB size is 472 bits, and the TBS index is 7. The number of PRBs corresponding to 472 bits is 4, that is, when the number of PRBs is 4, the received data packet can be carried.

It can be seen from the above description that in the existing SPS resource allocation method, only the size of the received data packet is considered, and the data packet arrival period and the SPS period are not considered. The number of PRBs determined by the prior art is used for data transmission. When the data packet arrival period is less than the SPS period, one SPS period cannot transmit all the received data packets, and the remaining data packets are accumulated in the cache, thereby causing The delay of the data packet reduces the quality of the voice service.

Summary of the invention

The present invention provides a method for allocating semi-persistent scheduling resources and a base station, which can reduce the delay of data packets and improve the quality of voice services.

In one aspect, the present invention provides a method for allocating semi-persistent scheduling resources, including:

S1: The base station receives a data packet that is sent by the user equipment UE during a voice call.

S2: the base station determines a modulation and coding policy MCS level, and determines packet information of the data packet according to the received data packet, where the MCS level is determined by the base station according to a channel quality indicator CQI of the channel used by the UE to send the data packet. The packet information includes: a packet size;

S3: The base station determines, according to the formula 1, the amount of data of the semi-persistent scheduling SPS scheduling.

The formula one is:

S4: The base station determines the number of physical resource blocks PRB according to the data volume of the SPS scheduling and the MCS level, so that the UE transmits the data packet according to the number of the PRBs.

Further, the S4 includes:

The base station searches for a PRB number in a preset PRB table according to the data volume of the SPS scheduling and the MCS level.

The PRB table includes: the amount of data, the MCS level, and the number of PRBs scheduled for each SPS.

Further, the S4 includes:

S41: The base station searches for a preset first table according to the MCS level, and determines a transport block small index TBS Index corresponding to the MCS level.

S42: The base station searches the preset second table according to the TBS Index and the data volume of the SPS scheduling, and determines the number of PRBs.

The first table corresponding to the uplink data packet is different from the first table corresponding to the downlink data packet, where the first table includes: an MCS level and a TBS Index, and the second table includes: a TBS Index and a PRB number.

Further, when the second table further includes a transport block size TBS, the S42 includes:

The base station searches for a TBS matching the data amount of each SPS scheduling in a column corresponding to the TBS Index of the second table;

If the match is matched, the number of PRBs corresponding to the matched TBS is used as the number of PRBs allocated to the UE;

If there is no match, the TBS corresponding to the data amount and having the smallest difference from the value of the data amount is searched in the column corresponding to the TBS index of the second table, and the number of PRBs corresponding to the TBS is used as the UE. The number of PRBs allocated.

Further, in the case that the packet information includes a packet size, a voice encoding format of the data packet, and whether the data packet is header-compressed, the S4, before the step S41, further includes:

S40: The base station determines whether the SPS period is greater than the data packet arrival period, and whether the current subframe is a regular subframe, and whether the voice coding format of the data packet is NB-AMR or WB-AMR;

When the SPS period is greater than the data packet arrival period, the current subframe is a regular subframe, and the voice coding format of the data packet is NB-AMR, the base station performs according to the MCS level and whether the data packet is performed. The header compressed information finds a preset third table, and obtains the number of PRBs;

When the SPS period is greater than the data packet arrival period, the current subframe is a regular subframe, and the voice coding format of the data packet is WB-AMR, the base station performs according to the MCS level and whether the data packet is performed. The header compressed information finds a preset fourth table, and obtains the number of PRBs;

When the SPS period is not greater than the data packet arrival period, or the current subframe is a special subframe, or the voice encoding format of the data packet is unable to recognize the voice format, then S41 and S42 are sequentially executed;

The third table corresponding to the uplink data packet is different from the third table corresponding to the downlink data packet, and the fourth table corresponding to the uplink data packet is different from the fourth table corresponding to the downlink data packet;

The third table includes: whether the data packet performs header compression, MCS level, and PRB number;

The fourth table includes: whether the data packet is header compressed, the MCS level, and the number of PRBs.

In another aspect, the present invention provides a base station, including:

a receiving unit, configured to receive a data packet sent by the user equipment UE during a voice call;

a determining unit, configured to determine a modulation and coding policy MCS level, and determine packet information of the data packet according to the data packet received by the receiving unit, where the MCS level is a channel quality indicator of the channel used by the determining unit according to the UE to send the data packet Determined by the CQI, the packet information includes: a data packet size;

a semi-persistent scheduling SPS determining unit for determining the amount of data scheduled for each SPS according to formula one,

The formula one is:

a physical resource block PRB number determining unit, configured to determine a PRB number according to an amount of data of each SPS scheduling determined by the SPS determining unit and an MCS level determined by the determining unit, so that the UE is configured according to the The number of PRB transmission packets.

Further, the PRB number determining unit is specifically configured to:

And searching for the number of PRBs in the preset PRB table according to the data volume of the SPS scheduling and the MCS level;

Further, the PRB number determining unit includes:

a transport block small index TBS Index determining subunit, configured to search a preset first table according to the MCS level, and determine a TBS Index corresponding to the MCS level;

a PRB number determining subunit, configured to find a preset second table according to the TBS Index determined by the TBS Index determining subunit and the data amount of each SPS scheduling, and determine the number of PRBs;

Further, the PRB number determining subunit is specifically configured to:

Searching for the TBS matching the data amount of each SPS scheduling in the column corresponding to the TBS index of the second table. If the matching, the number of PRBs corresponding to the matched TBS is used as the number of PRBs allocated to the UE, if not Matching, in the column corresponding to the TBS Index of the second table, searching for a TBS that is larger than the data amount and having the smallest difference from the value of the data amount, and the number of PRBs corresponding to the TBS is allocated to the UE. Number of PRBs;

The second table further includes a transport block size TBS.

Further, the PRB number determining unit further includes:

The determining subunit is configured to determine whether the SPS period is greater than the data packet arrival period, and whether the current subframe is a regular subframe, and whether the voice encoding format of the data packet is NB-AMR or WB-AMR;

The first PRB number subunit is configured to determine, in the determining subunit, that the SPS period is greater than the data packet arrival period, the current subframe is a regular subframe, and the voice coding format of the data packet is NB. -AMR, searching for a preset third table according to the MCS level and whether the data packet is header compressed, and obtaining the number of PRBs;

The second PRB number subunit is configured to determine, in the determining subunit, that the SPS period is greater than the data packet arrival period, the current subframe is a regular subframe, and the voice coding format of the data packet is WB. -AMR, searching for a preset fourth table according to the MCS level and whether the data packet is header compressed, to obtain the number of PRBs;

The TBS Index determining subunit is specifically configured to determine, in the determining subunit, that the SPS period is not greater than the data packet arrival period, or that the current subframe is a special subframe, or that the voice encoding format of the data packet cannot be When the voice format is recognized, the preset first table is searched according to the MCS level, and the TBS Index corresponding to the MCS level is determined;

The packet information includes a data packet size, a voice coding format of the data packet, and information about whether the data packet is header compressed.

The present invention provides a method for allocating semi-persistent scheduling resources and a base station, and the amount of data for each SPS scheduling is obtained according to the relationship between the SPS period and the packet arrival period, and the number of PRBs obtained according to the data amount scheduled by the SPS can be reduced. The data packets accumulated in the cache reduce the delay of the data packet and improve the quality of the voice service.

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 Some embodiments of the present invention may also be used to obtain other drawings based on these drawings without departing from the art.

1 is a schematic diagram of data transmission of a VOIP service provided by the present invention;

2 is a flowchart of a method for allocating semi-persistent scheduling resources according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a base station according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts are protected by the present invention. range.

At present, the scheduling modes determined by LTE are divided into two types: SPS and dynamic scheduling. The existing SPS resource allocation method causes a large packet delay and a low voice service quality. To solve the above problem, the present invention is implemented. The example provides a method for allocating semi-persistent scheduling resources. Referring to FIG. 2, the method includes:

S1: The base station receives a data packet sent by the UE during a voice call.

Specifically, the base station receives the data packet of the UE for a preset period of time.

S2: The base station determines the MCS level, and determines the packet information of the data packet according to the received data packet, where the MCS level is determined by the base station according to the CQI of the channel used by the UE to send the data packet, where the packet information includes: a data packet. size;

Specifically, the foregoing MCS level is obtained by the base station correcting the MCS level corresponding to the CQI sent by the UE.

Optionally, the base station determines, according to the received data packet in a period of time, whether the received data packet performs header compression, determines coding efficiency of the data packet, and determines whether the data packet is header compressed according to the MCS level. The information and the determined coding efficiency of the data packet are used to find a preset data packet size table, and the data packet size is determined according to the preset data packet size table, wherein, optionally, the preset data packet size table includes : According to whether the packet performs header compression information, MCS level, and coding efficiency of the data packet.

S3: The base station determines the amount of data scheduled for each SPS according to formula 1.

The formula one is:

Specifically, the general packet arrival period is 20 ms. According to the 3GPP 36.213 protocol, the SPS period may take 10ms, 20ms, 32ms, 40ms, 64ms, 80ms, 128ms, 160ms, 320ms, 640ms. The maximum amount of data scheduled in the SPS schedule in Equation 1 is to avoid excessive resources occupied by a single user when the ratio of the SPS period to the packet arrival period is too large, through a preset SPS tone. The maximum amount of data can limit the amount of data that is scheduled for each SPS.

S4: The base station determines the number of PRBs according to the data volume of the SPS scheduling and the MCS level, so that the UE transmits the data packet according to the number of the PRBs.

In the method in the foregoing embodiment, the data amount of each SPS scheduling is obtained according to the relationship between the SPS period and the packet arrival period, and the number of PRBs obtained according to the data amount scheduled by the SPS can reduce the data packets accumulated in the cache. Reduce the delay of data packets and improve the quality of voice services. In particular, when the data packet arrival period is less than the SPS period, the amount of data of each SPS scheduling obtained by the method in this embodiment is greater than the size of one data packet, and thus more data packets can be scheduled in one SPS period. It can reduce the number of data packets accumulated in the cache, reduce the delay of data packets, and improve the quality of voice services.

In a possible implementation manner, the S4 includes:

In the above PRB table, the data amount of each SPS scheduling corresponding to the number of different PRBs under the current MCS level is listed. For details, refer to Table 1. Table 1 shows a PRB table, in Table 1. A1 represents the amount of data that is scheduled for each SPS when the MCS level is 0 and the number of PRBs is 1, and the meaning represented by A2, B1, B2, ... and so on.

Table 1

Finding, in a column corresponding to the MCS level of the PRB table, a data amount of each SPS scheduling in the PRB table matching the data amount of each SPS scheduling determined by the formula 1;

If the matching is performed, the number of PRBs corresponding to the data volume of each SPS scheduling in the matched PRB table is used as the number of PRBs allocated to the UE;

If there is no match, the data amount corresponding to each SPS schedule obtained by the formula 1 and the value of the data amount of each SPS schedule determined by the formula 1 are searched in the column corresponding to the MCS level of the PRB table. The amount of data for each SPS scheduling in the PRB table with the smallest difference is the number of PRBs corresponding to the data amount of each SPS scheduling in the PRB table as the number of PRBs allocated to the UE.

In another possible implementation manner, the S4 includes steps S41, S42 not shown in the figure:

S41: The base station searches for a preset first table according to the MCS level, and determines a TBS Index corresponding to the MCS level.

The first table corresponding to the uplink data packet is different from the first table corresponding to the downlink data packet, where the first table includes: an MCS level and a TBS Index, and the second table includes: a TBS Index and a PRB number. Optionally, the first table corresponding to the uplink data packet is Table 8.6.1-1 in the 3GPP 36.213 protocol, and the first table corresponding to the downlink data packet is Table 7.1.7.1-1 in the 3GPP 36.213 protocol, the foregoing second The table is Table 7.1.7.2.1-1 in the 3GPP 36.213 protocol.

When the second table further includes a TBS, the S42 includes:

Wherein, the above matching is that the index values are equal.

In a further possible implementation, when the packet information includes the data packet size, the voice coding format of the data packet, or the information about whether the data packet is header compressed, the S4 is further included before the step S41. Step S40 not shown in the figure:

When the SPS period is not greater than the data packet arrival period, or the current subframe is a special subframe, or the voice coding format of the data packet cannot identify the voice format, the foregoing steps are sequentially performed. S41, the above step S42;

When the MCS level matching the MCS level acquired by the base station is not found in the third table or the fourth table, the difference between the value of the MCS level acquired by the base station and the MCS level acquired by the base station is found in the table. In the smallest table, the MCS level is the number of PRBs corresponding to the MCS level in the table as the number of PRBs allocated to the UE.

Figure 3 shows a base station comprising:

The receiving unit 301 is configured to receive a data packet that is sent by the UE during a voice call.

The determining unit 302 is configured to determine an MCS level, and determine, according to the data packet received by the receiving unit 301, the packet information of the data packet, where the MCS level is determined by the determining unit according to the CQI of the channel used by the UE to send the data packet, where The packet information includes: a packet size;

The SPS determining unit 303 is configured to determine the amount of data scheduled for each SPS according to the formula 1.

The formula one is:

a PRB number determining unit 304, configured to determine a PRB number according to the data amount of each SPS scheduling determined by the SPS determining unit 303 and the MCS level determined by the determining unit 302, so that the UE is configured according to the The number of PRB transmission packets.

In a possible implementation manner, the PRB number determining unit 304 is specifically configured to:

In another possible implementation manner, the PRB number determining unit 304 includes a TBS Index determining subunit 3041 and a PRB number determining subunit 3042 not shown in the figure:

a TBS Index determining subunit 3041, configured to search a preset first table according to the MCS level, and determine a TBS Index corresponding to the MCS level;

a PRB number determining sub-unit 3042, configured to determine a preset second table according to the TBS Index determined by the TBS Index determining sub-unit 3041 and the data amount of the SPS scheduling, and determine the number of PRBs;

The first table corresponding to the uplink data packet is different from the first table corresponding to the downlink data packet, where the first table includes: an MCS level and a TBS Index, and the second table includes: a TBS Index and a PRB number. Optionally, the first table corresponding to the uplink data packet is the table 8.6.1-1 in the 3GPP 36.213 protocol, and the downlink data packet The corresponding first table is Table 7.1.7.1-1 in the 3GPP 36.213 protocol, and the second table above is Table 7.7.2.2-1 in the 3GPP 36.213 protocol.

When the foregoing second table further includes a TBS, the PRB number determining subunit 3042 is specifically configured to:

Wherein, the second table further includes a TBS.

In a further possible implementation, the PRB number determining unit 304 further includes a determining subunit 3043, a first PRB number subunit 3044, and a second PRB number subunit 3045, which are not shown in the figure:

The determining sub-unit 3043 is configured to determine whether the SPS period is greater than the data packet arrival period, and whether the current subframe is a regular subframe, and whether the voice encoding format of the data packet is NB-AMR or WB-AMR;

The first PRB number subunit 3044 is configured to determine, in the determining subunit 3043, that the SPS period is greater than the data packet arrival period, the current subframe is a regular subframe, and the voice encoding format of the data packet is When the NB-AMR is used, the preset third table is searched according to the MCS level and whether the data packet is header compressed, and the number of PRBs is obtained.

The second PRB number sub-unit 3045 is configured to determine, in the determining sub-unit 3043, that the SPS period is greater than the data packet arrival period, the current subframe is a regular subframe, and the voice encoding format of the data packet is In the case of the WB-AMR, the preset fourth table is obtained according to the MCS level and whether the data packet is header compressed, and the number of PRBs is obtained;

The TBS Index determining subunit 3041 is specifically configured to determine, in the determining subunit 3043, that the SPS period is not greater than the data packet arrival period, or that the current subframe is a special subframe, or a voice encoding format of the data packet. When the voice format is not recognized, the preset first table is searched according to the MCS level, and the TBS Index corresponding to the MCS level is determined;

Optionally, the third table corresponding to the uplink data packet is Table 2, and the third table corresponding to the downlink data packet is Table 3. The fourth table corresponding to the uplink data packet is Table 4, and the fourth table corresponding to the downlink data packet is Table 5.

Table 2

table 3

Table 4

table 5

The content of the information exchange, the execution process, and the like between the units and the sub-units in the above-mentioned device are based on the same concept as the method embodiment of the present invention. For details, refer to the description in the method embodiment of the present invention, and details are not described herein again.

Industrial applicability

It should be noted that in this paper, relational terms such as first and second are only used to An entity or operation is distinct from another entity or operation, and does not necessarily require or imply any such actual relationship or order. Furthermore, the term "comprises" or "comprises" or "comprises" or any other variations thereof is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device that comprises a plurality of elements includes not only those elements but also Other elements, or elements that are inherent to such a process, method, item, or device. An element that is defined by the phrase "comprising a" does not exclude the presence of additional equivalents in the process, method, item, or device that comprises the element.

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 the program instructions. The foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The steps of the foregoing method embodiments are included; and the foregoing storage medium includes: various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

It should be noted that the above description is only a preferred embodiment of the present invention, and is only for explaining the technical solutions of the present invention, and is not intended to limit the scope of the present invention. Any modifications, equivalents, improvements, etc. made within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

A method for allocating semi-persistent scheduling resources, comprising:

Receiving, by the base station, a data packet sent by the user equipment UE during a voice call;

Determining, by the base station, a modulation and coding policy MCS level, and determining packet information of the data packet according to the received data packet, where the MCS level is determined by the base station according to a channel quality indicator CQI of a channel used by the UE to send the data packet, the packet Information includes: packet size;

The base station determines the amount of data for each semi-persistent scheduling SPS scheduling according to formula 1.

The formula 1 is: the amount of data of each SPS scheduling = min {pre-set maximum amount of SPS scheduling data,

The base station determines the number of physical resource blocks PRB according to the data volume of the SPS scheduling and the MCS level, so that the UE transmits the data packet according to the number of the PRBs.
The method according to claim 1, wherein the base station determines the number of physical resource blocks PRB according to the data amount of the SPS scheduling and the MCS level, so that the UE is based on the number of the PRBs. Transmit packets, including:

The base station searches for a PRB number in a preset PRB table according to the data volume of the SPS scheduling and the MCS level.

The PRB table includes: the amount of data, the MCS level, and the number of PRBs scheduled for each SPS.
The method according to claim 1, wherein the base station determines the number of physical resource blocks PRB according to the data amount of the SPS scheduling and the MCS level, so that the UE is based on the number of the PRBs. Transmit packets, including:

The base station searches for a preset first table according to the MCS level, and determines a transport block small index TBS Index corresponding to the MCS level;

The base station searches the preset second table according to the TBS Index and the data volume of the SPS scheduling, and determines the number of PRBs;

The first table corresponding to the uplink data packet is different from the first table corresponding to the downlink data packet, where the first table includes: an MCS level and a TBS Index, and the second table includes: a TBS Index and a PRB number.
The method of claim 3 wherein:

When the second table further includes a transport block size TBS, the base station searches the preset second table according to the TBS Index and the data volume of the SPS scheduling, and determines the number of PRBs, including:

The base station searches for a TBS matching the data amount of each SPS scheduling in a column corresponding to the TBS Index of the second table;

If the match is matched, the number of PRBs corresponding to the matched TBS is used as the number of PRBs allocated to the UE;

If there is no match, the TBS corresponding to the data amount and having the smallest difference from the value of the data amount is searched in the column corresponding to the TBS index of the second table, and the number of PRBs corresponding to the TBS is used as the UE. The number of PRBs allocated.
Method according to claim 3 or 4, characterized in that

When the packet information includes a data packet size, a voice encoding format of the data packet, or a packet compression information, the base station searches for a preset first table according to the MCS level, and determines that the MCS level corresponds to The transport block small index before the TBS Index also includes:

The base station determines whether the SPS period is greater than the data packet arrival period, and whether the current subframe is a regular subframe, and whether the voice coding format of the data packet is NB-AMR or WB-AMR;

When the SPS period is greater than the data packet arrival period, the current subframe is a regular subframe, and the voice coding format of the data packet is NB-AMR, the base station performs according to the MCS level and whether the data packet is performed. The header compressed information finds a preset third table, and obtains the number of PRBs;

When the SPS period is greater than the data packet arrival period, the current subframe is a regular subframe, and the voice coding format of the data packet is WB-AMR, the base station performs according to the MCS level and whether the data packet is performed. The header compressed information finds a preset fourth table, and obtains the number of PRBs;

When the SPS period is not greater than the data packet arrival period, or the current subframe is a special subframe, or the voice coding format of the data packet cannot identify the voice format, the base station sequentially performs the search according to the MCS level. a first table, a step of determining a transport block small index TBS Index corresponding to the MCS level, and

Determining, by the base station, the preset second table according to the TBS Index and the data volume of each SPS scheduling, and determining a number of PRBs;

The third table corresponding to the uplink data packet is different from the third table corresponding to the downlink data packet, and the fourth table corresponding to the uplink data packet is different from the fourth table corresponding to the downlink data packet;

The third table includes: whether the data packet performs header compression, MCS level, and PRB number;

The fourth table includes: whether the data packet is header compressed, the MCS level, and the number of PRBs.
A base station, comprising:

a receiving unit, configured to receive a data packet sent by the user equipment UE during a voice call;

a determining unit, configured to determine a modulation and coding policy MCS level, and determine packet information of the data packet according to the data packet received by the receiving unit, where the MCS level is a channel quality indicator of the channel used by the determining unit according to the UE to send the data packet Determined by the CQI, the packet information includes: a data packet size;

a semi-persistent scheduling SPS determining unit for determining the amount of data scheduled for each SPS according to formula one,

The formula 1 is: the amount of data of each SPS scheduling = min {pre-set maximum amount of SPS scheduling data,

a physical resource block PRB number determining unit, configured to determine a PRB number according to an amount of data of each SPS scheduling determined by the SPS determining unit and an MCS level determined by the determining unit, so that the UE is configured according to the The number of PRB transmission packets.
The base station according to claim 6, wherein the PRB number determining unit is specifically configured to:

And searching for the number of PRBs in the preset PRB table according to the data volume of the SPS scheduling and the MCS level;

The PRB table includes: the amount of data, the MCS level, and the number of PRBs scheduled for each SPS.
The base station according to claim 6, wherein the number of PRB determination units comprises:

a transport block small index TBS Index determining subunit, configured to search a preset first table according to the MCS level, and determine a TBS Index corresponding to the MCS level;

a PRB number determining subunit, configured to find a preset second table according to the TBS Index determined by the TBS Index determining subunit and the data amount of each SPS scheduling, and determine the number of PRBs;

The first table corresponding to the uplink data packet is different from the first table corresponding to the downlink data packet, where the first table includes: an MCS level and a TBS Index, and the second table includes: a TBS Index and a PRB number.
The base station according to claim 8, wherein

The number of PRB determination subunits is specifically used to:

Searching for the TBS matching the data amount of each SPS scheduling in the column corresponding to the TBS index of the second table. If the matching, the number of PRBs corresponding to the matched TBS is used as the number of PRBs allocated to the UE, if not Matching, in the column corresponding to the TBS Index of the second table, searching for a TBS that is larger than the data amount and having the smallest difference from the value of the data amount, and the number of PRBs corresponding to the TBS is allocated to the UE. Number of PRBs;

The second table further includes a transport block size TBS.
The base station according to claim 8 or 9, wherein the PRB number determining unit further comprises:

The determining subunit is configured to determine whether the SPS period is greater than the data packet arrival period, and whether the current subframe is a regular subframe, and whether the voice encoding format of the data packet is NB-AMR or WB-AMR;

The first PRB number subunit is configured to determine, in the determining subunit, that the SPS period is greater than the data packet arrival period, the current subframe is a regular subframe, and the voice coding format of the data packet is NB. -AMR, searching for a preset third table according to the MCS level and whether the data packet is header compressed, and obtaining the number of PRBs;

The second PRB number subunit is configured to determine, in the determining subunit, that the SPS period is greater than the data packet arrival period, the current subframe is a regular subframe, and the voice coding format of the data packet is WB. -AMR, searching for a preset fourth table according to the MCS level and whether the data packet is header compressed, to obtain the number of PRBs;

The TBS Index determining subunit is specifically configured to determine, in the determining subunit, that the SPS period is not greater than the data packet arrival period, or that the current subframe is a special subframe, or that the voice encoding format of the data packet cannot be When the voice format is recognized, the preset first table is searched according to the MCS level, and the TBS Index corresponding to the MCS level is determined;

The packet information includes a data packet size, a voice coding format of the data packet, and information about whether the data packet is header compressed.

The third table corresponding to the uplink data packet is different from the third table corresponding to the downlink data packet, and the fourth table corresponding to the uplink data packet is different from the fourth table corresponding to the downlink data packet;

The third table includes: whether the data packet performs header compression, MCS level, and PRB number;

The fourth table includes: whether the data packet is header compressed, the MCS level, and the number of PRBs.
A computer program comprising computer readable code means, wherein the computer program, when run in a base station according to any of claims 6-10, is implemented as claimed in any one of claims 1-5 A semi-persistent scheduling resource allocation method.
A computer storage medium, characterized in that the computer storage medium is for storing the computer program of claim 11.