WO2014089765A1 - Method, device and system for service scheduling and service transfer rate controlling - Google Patents

Abstract

The embodiments of the present invention provide a method, device and system for service scheduling and service transfer rate controlling, which relates to the communications field. The method includes: according to the present traffic of each user and the Quality of Service (QoS) requirements of each service, the lowest information transfer rate satisfying the QoS requirements corresponding to each user is determined; according to the percentage of service completion in the previous transfer period and channel condition of each user in the previous transfer period, a target information transfer rate of each user is determined, and the target information transfer rate is larger than or equal to the lowest information transfer rate; and in the present transfer period, according to the target information transfer rate, transfer resources and transfer power are allocated for each user. The problem of costing more energy in the present solutions is solved by the present invention, achieving that the downlink transfer power could be changed dynamically according to the QoS requirements of the different service while service QoS requirements are guaranteed for the purpose of network energy saving.

Description

 Service scheduling method, service transmission rate control method, device and system

 The present invention relates to the field of communications technologies, and in particular, to a service scheduling method, a service transmission rate control method, a device, and a system. Background technique

 In current mobile communication systems such as LTE, common types of services include real-time services such as telephony, chat, and streaming, as well as non-real-time services such as email, download, and distributed collaboration.

 In the current mobile communication system, if the base station has a service that needs to be scheduled to be sent, the service scheduling method used includes the following steps:

 First, when the service reaches the base station, the base station allocates each service to a scheduling queue corresponding to each user, and waits for scheduling, and the QoS (Quality of Service) requirements of each service and the buffering status of each scheduling queue are used by the base station. Centralized control of the scheduler;

 Second, after each transmission period, the scheduler sequentially calculates the priority of the user on each RB (Resource Block) according to the EXP_PF (Exponential/proportional fair) algorithm. Specifically, the EXP-PF algorithm calculates the priority of the user on each RB according to the service type and QoS requirements of each service, and the current channel conditions of each user. In the calculation process, the capacity is maximized and the real-time service is satisfied. Delay requirement

 Third, the scheduler allocates the RB to the user with the highest priority. Under the power constraint condition of equal power allocation on all RBs, the scheduled user performs best-effort transmission on the allocated RB.

In the process of implementing the present invention, the inventors have found that the prior art has at least the following problems: The existing service scheduling method considers the channel conditions of the user on the RB and the QoS requirements of the service, but does not provide accurate QoS guarantee. The existing service scheduling method introduces channel conditions mainly for the purpose of ensuring maximum capacity. At the same time, the existing service scheduling method enables each RB to perform equal power allocation, resulting in more energy consumption. Summary of the invention In view of this, the embodiments of the present invention provide a service scheduling method, a service transmission rate control method, a device, and a system, to solve the problem of more energy consumption in the existing solution. The technical solution is as follows: In a first aspect, a service scheduling method is provided, where the method includes:

 Determining, according to the current traffic volume of each user and the QoS requirements of each service, a minimum information transmission rate corresponding to each QoS requirement corresponding to each user;

 Determining a target information transmission rate corresponding to each user in a current transmission period according to a service completion percentage in a previous transmission period and a channel condition of each user in the previous transmission period, the target information transmission rate> Minimum information transmission rate;

 Transmitting a transmission resource and a transmission power for each user according to the target information transmission rate in the current transmission period;

 The service completion percentage is equal to (the sum of the actual information transmission rates of all users in the previous transmission period/the sum of the target information transmission rates of all users in the previous transmission period;).

 In a first possible implementation manner of the first aspect, the determining, according to a service completion percentage in a previous transmission period, and a channel condition of each user in the previous transmission period, determining that each of the current transmission periods corresponds to each The target information sending rate of the user, the target information sending rate > the lowest information sending rate, including:

 Detecting whether the percentage of service completion in the last transmission cycle is less than 100%;

 If it is detected that the service completion percentage in the previous transmission period is less than 100%, the target information transmission rate in each of the previous transmission periods is lowered by each user as the target information in the current transmission period. rate.

 With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner, the user sends the last information transmission rate in the previous sending period to the current The sending rate of the target information in the sending cycle, including:

 Setting the percentage of service completion in the last transmission cycle to be X%;

 Determining that the target information transmission rate of one user in the current transmission period is: (the target information transmission rate of the user in the previous transmission period) *X%.

 In a third possible implementation manner of the first aspect, the determining, according to a percentage of service completion in a previous sending period, and a channel condition of each user in the previous sending period, determining that each of the current sending periods corresponds to each The rate at which the user's target information is sent, including:

 Determining whether the channel condition of the user in the previous transmission period is better than the average channel condition;

If the detection result is better than the average channel condition, determining the target information transmission rate > The minimum information transmission rate, and the target information transmission rate satisfies a preset energy consumption ratio requirement; if the detection result is worse than the average channel condition, determining the target information transmission rate=the minimum information transmission rate .

 With reference to the first aspect, any one of the first to third possible implementation manners of the first aspect, in the fourth possible implementation manner, the current traffic volume and QoS of each service according to each user It is required to determine, before the minimum information transmission rate corresponding to the QoS requirement corresponding to each user in the current transmission period, the following:

 And allocating the received service to the shaping leaky bucket corresponding to each user for shaping; determining, according to the current traffic volume of each user and the QoS requirement of each service, that the QoS requirement is met corresponding to each user The minimum information transmission rate, including:

 Determining a service arrival curve according to a current traffic volume in the shaped leaky bucket corresponding to each user; determining a "rate-delay" service curve according to the service arrival curve and QoS requirements of each service, the "rate-delay" "The service curve corresponds to the lowest information transmission rate.

 With reference to the first aspect, any one of the first to fourth possible implementation manners of the first aspect, in the fifth possible implementation manner, in the current sending period, according to the target information The transmission rate allocates transmission resources and transmission power to each user, including:

 Assigning, according to the priority of the corresponding service of each user, the transmission resource with the best channel gain for the user in the currently available transmission resource unit in the current transmission period, in descending order of priority of the corresponding service of each user. Unit, the channel gain is determined according to a channel condition of the user in a previous transmission period;

 Under the premise that the target information transmission rate of each user is satisfied, the transmission power and the actual information transmission rate of each user on the allocated transmission resource unit are determined according to the principle of minimizing power sum.

 With reference to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner, the priority of the corresponding service of each user is assigned to each user in descending order After the transmission resource unit with the best channel gain for the user in the currently available transmission resource unit in the current transmission period, the method further includes:

 If there are unallocated transmission resource units in the currently available transmission resource unit in the current transmission period, each of the remaining transmission resource units is allocated to the user with the best channel gain.

With reference to the fifth or sixth possible implementation manner of the first aspect, in a seventh possible implementation manner, in the current sending period, according to the target information sending rate, each user is Before allocating transmission resources and transmit power, it also includes:

 Perform service classification according to the service type and QoS requirements of each user's corresponding service, and set different priorities for different classified services;

 Detecting whether the current number of users is greater than the maximum number of users that can provide services in the current sending period; if it is detected that the current number of users is greater than the maximum number of users, the priority of the corresponding service of each user is reduced. The number of users to be served in the current sending period is such that the number of users to be served in the reduced current sending period is less than or equal to the maximum number of users.

 In a second aspect, a service delivery rate control method is provided, where the method includes:

 Measuring a service transmission rate when transmitting a service to a base station in a current transmission period;

 Detecting whether the service transmission rate of the current transmission period is greater than a preset maximum service transmission rate;

 If it is detected that the service transmission rate of the current transmission period is greater than the maximum service transmission rate, adjust the service transmission rate of the next transmission period, so that the service transmission rate of the next transmission period is smaller than the maximum service transmission rate.

 In a first possible implementation manner of the second aspect, the preset maximum service transmission rate is a peak service capability requirement that is reported by the base station in advance or according to a communication protocol adopted by the base station. definite.

 In a third aspect, a base station is provided, where the base station includes:

 a minimum rate determining module, configured to determine, according to a current traffic volume of each user and a QoS requirement of each service, a minimum information sending rate corresponding to each QoS requirement corresponding to each user;

 a target rate determining module, configured to determine, according to a percentage of service completion in a previous sending period and a channel condition of each user in the last sending period, a target information sending rate corresponding to each user in a current sending period, Target information transmission rate> the lowest information transmission rate determined by the lowest rate determination module;

 a resource allocation module, configured to allocate, according to the target information sending rate determined by the target rate determining module, a transmission resource and a transmitting power for each user in the current sending period;

 The service completion percentage is equal to (the sum of the actual information transmission rates of all users in the previous transmission period/the sum of the target information transmission rates of all users in the previous transmission period;).

 In a first possible implementation manner of the third aspect, the target rate determining module includes: a service detecting unit and a speed adjusting unit;

The service detecting unit is configured to detect whether the percentage of service completion in the previous sending period is Less than 100%;

 The speed adjustment unit is configured to: if the service detecting unit detects that the percentage of service completion in the last transmission period is less than 100%, adjust the target information transmission rate of each user in the previous transmission period The low is used as the target information transmission rate in the current transmission period.

 With reference to the first possible implementation manner of the third aspect, in a second possible implementation, the speed adjustment unit is specifically configured to set a percentage of service completion in the last sending period to be x%; The target information transmission rate of one user in the current transmission period is: (the target information transmission rate of the user in the previous transmission period) *x%.

 In a third possible implementation manner of the third aspect, the target rate determining module includes: a channel detecting unit and a speed adjusting unit;

 The channel detecting unit is configured to determine whether a channel condition of the user in the previous transmission period is better than an average channel condition;

 The speed adjustment unit is configured to determine, if the detection result of the channel detecting unit is better than the average channel condition, the target information sending rate > the lowest information sending rate, and the target information sending rate is satisfied Preset energy consumption ratio requirements;

 The speed adjustment unit is configured to determine the target information transmission rate=the lowest information transmission rate if the detection result of the channel detection unit is worse than the average channel condition.

 With reference to the third aspect, the any one of the first to the third aspect of the third aspect, in the fourth possible implementation, the base station further includes: a service shaping module;

 The service shaping module is configured to allocate the received service to the integer leaky bucket corresponding to each user for shaping;

 The lowest rate determining module includes: an arrival curve calculation unit and a service curve calculation unit, where the arrival curve calculation unit is configured to perform current service in the shaped leaky bucket corresponding to each user respectively according to the service shaping module The quantity determines the business arrival curve;

 The service curve calculation unit is configured to determine a “rate-delay” service curve according to the service arrival curve calculated by the arrival curve calculation unit and the QoS requirement of each service, where the “rate-delay” service curve corresponds to the The minimum information transmission rate.

 With reference to the third aspect, any one of the first to fourth possible implementation manners of the third aspect, in the fifth possible implementation, the resource allocation module includes: a resource allocation unit and a power allocation unit ;

The resource allocation unit is configured to: according to the priority of each user's corresponding service, from high to low And sequentially assigning, to each user, a transmission resource unit that is the best channel gain for the user in the currently available transmission resource unit in the current transmission period, where the channel gain is obtained according to the condition acquisition unit Channel condition determination in the previous transmission cycle;

 The power allocation unit is configured to determine, according to the principle of minimizing power sum, each user in the allocated transmission resource unit, on the premise that the target information transmission rate of each user determined by the target rate determination module is met Transmit power and actual information transmission rate.

 With reference to the fifth possible implementation manner of the third aspect, in a sixth possible implementation, the resource allocation unit is further configured to: if the currently available transmission resource unit in the current sending period still has an unallocated The resource unit is transmitted, and each of the remaining transmission resource units is allocated to the user with the best channel gain.

 With reference to the fifth or the sixth possible implementation manner of the third aspect, in the seventh possible implementation, the base station further includes:

 a service classification module, a user number detection module, and a service user number adjustment module;

 The service classification module is configured to perform service classification according to service types and QoS requirements of corresponding services of each user, and set different priorities for services of different classifications;

 The user number detecting module is configured to detect whether the current number of users is greater than the maximum number of users that can provide services during the current sending period;

 The service user number adjustment module is configured to: if the user number detecting module detects that the current number of users is greater than the maximum number of users, the priority of each user's corresponding service determined according to the service classification module is reduced. The number of users to be served in the current sending period is such that the number of users to be served in the reduced current sending period is less than or equal to the maximum number of users.

 In a fourth aspect, a gateway is provided, where the gateway includes:

 a rate measurement module, configured to measure a service transmission rate when sending a service to a base station in a current transmission period;

 a rate detecting module, configured to detect whether a service transmission rate of the current transmission period measured by the rate measurement module is greater than a preset maximum service transmission rate;

 a rate adjustment module, configured to: if the rate detection module detects that the service transmission rate of the current transmission period is greater than the maximum service transmission rate, adjust a service transmission rate of the next transmission period, so that the service transmission of the next transmission period The rate is less than the maximum service transmission rate.

In a first possible implementation manner of the fourth aspect, the preset maximum service transmission rate is a peak that is reported by the base station in advance or according to a communication protocol adopted by the base station to the base station. Service capacity requirements are determined.

 In a fifth aspect, a base station is provided, where the base station includes:

 a processor, configured to determine, according to a current traffic volume of each user and a QoS requirement of each service, a minimum information transmission rate corresponding to each QoS requirement corresponding to each user;

 The processor is further configured to determine, according to a service completion percentage in a previous transmission period and a channel condition of each user in the previous transmission period, a target information transmission rate corresponding to each user in a current transmission period, where The minimum information transmission rate of the target information transmission rate";

 The processor is further configured to allocate a transmission resource and a transmission power to each user according to the target information sending rate in the current sending period;

 The service completion percentage is equal to (the sum of the actual information transmission rates of all users in the previous transmission period/the sum of the target information transmission rates of all users in the previous transmission period;).

 In a first possible implementation manner of the fifth aspect, the processor is configured to detect whether a percentage of service completion in the last sending period is less than 100%;

 The processor, if it is detected that the service completion percentage in the last transmission period is less than 100%, then the target information transmission rate in each previous transmission period of each user is lowered as the current The target information transmission rate in the transmission cycle.

 With reference to the first possible implementation manner of the fifth aspect, in a second possible implementation, the processor is configured to set a service completion percentage in the last sending period to be x%; The target information transmission rate of one user in the current transmission period is: (the target information transmission rate of the user in the previous transmission period) *x%.

 In a third possible implementation manner of the fifth aspect, the processor is configured to determine whether a channel condition of the user in the previous transmission period is better than an average channel condition;

 The processor is configured to: if the detection result is better than the average channel condition, determine the target information sending rate > the lowest information sending rate, and the target information sending rate meets a preset energy consumption ratio requirement ;

 The processor is configured to determine the target information transmission rate = the lowest information transmission rate if the detection result is worse than the average channel condition.

 With reference to the fifth aspect, the first to the third possible implementation manners of the fifth aspect, in a fourth possible implementation, the base station, further includes: a receiver;

The processor is further configured to allocate the service received by the receiver to an shaping leaky bucket corresponding to each user for shaping; The processor is configured to determine a service arrival curve according to a current traffic volume in the shaped leaky bucket corresponding to each user;

 The processor is configured to determine a "rate-delay" service curve according to the service arrival curve and QoS requirements of each service, where the "rate-delay" service curve corresponds to the lowest information transmission rate.

 With reference to the fifth aspect, any one of the first to fourth possible implementation manners of the fifth aspect, in a fifth possible implementation manner,

 The processor is configured to sequentially allocate, to the user, the current available transmission resource unit in the current transmission period for the user according to the priority of the corresponding service of each user from high to low. Channel transmission is the best transmission resource unit, and the channel gain is determined according to channel conditions of the user in a previous transmission period;

 The processor is configured to determine, according to the principle of minimizing power sum, the transmit power and actual information of each user on the allocated transmission resource unit, on the premise that the target information transmission rate of each user is met. Transmission rate.

 With reference to the fifth possible implementation manner of the fifth aspect, in a sixth possible implementation, the processor is further configured to: if the currently available transmission resource unit in the current sending period still has an unallocated transmission The resource unit allocates each of the remaining transmission resource units to the user with the best channel gain.

 With reference to the fifth or the sixth possible implementation manner of the fifth aspect, in a seventh possible implementation, the processor is further configured to perform service according to a service type and a QoS requirement of a corresponding service of each user. Classification, and set different priorities for different classified businesses;

 The processor is further configured to detect whether the current number of users is greater than a maximum number of users that can provide services during the current sending period;

 The processor is further configured to: if the number of the current users is greater than the maximum number of users, reduce the number of users to be served in the current sending period according to the priority of the corresponding service of each user, so that the number of users is reduced. The number of users to be served in the subsequent current transmission period is less than or equal to the maximum number of users.

 In a sixth aspect, a gateway is provided, where the gateway includes:

 a processor, configured to measure a service transmission rate when the service is sent to the base station in the current transmission period, where the processor is configured to detect whether the service transmission rate of the current transmission period is greater than a preset maximum service transmission rate;

The processor is configured to: if it is detected that the service transmission rate of the current transmission period is greater than the maximum service transmission rate, adjust a service transmission rate of the next transmission period, so that the next transmission period is The service transmission rate is less than the maximum service transmission rate.

 In a first possible implementation manner of the sixth aspect, the preset maximum service transmission rate is a peak service capability requirement that is reported by the base station in advance or according to a communication protocol adopted by the base station. definite.

 A seventh aspect, a communication system is provided, comprising the base station according to any one of the third aspect or the third aspect, and any one of the fourth aspect or the fourth aspect The gateway described in the embodiments.

 In an eighth aspect, a communication system is provided, comprising the base station according to any one of the fifth aspect or the fifth aspect, and the sixth aspect or the sixth aspect The gateway described in the embodiments.

 The beneficial effects of the technical solutions provided by the embodiments of the present invention are:

 Determining a minimum information transmission rate of each user according to the QoS requirement, and determining a target information transmission rate greater than or equal to the minimum information transmission rate according to the service completion percentage and the channel condition of each user in the previous transmission period, using the target The information transmission rate allocates transmission resources and transmission power; solves the problem of more energy consumption in the existing solution; and achieves that the downlink transmission power can be dynamically changed according to the QoS requirements of different services under the condition of ensuring service QoS requirements, thereby realizing The purpose of network energy conservation. DRAWINGS

 In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings may be obtained based on these drawings without any creative work.

 1 is a functional relationship diagram between the number of bits R transmitted in the network and the required power S; FIG. 2 is a flowchart of a method for scheduling a service according to an embodiment of the present invention;

 3A is a flowchart of a method for a service scheduling method according to another embodiment of the present invention;

 3B is a functional relationship diagram of an arrival curve and a service curve according to another embodiment of the present invention; FIG. 4 is a flowchart of a method for controlling a service transmission rate according to an embodiment of the present invention; FIG. 5 is a flowchart of an embodiment of the present invention. Block diagram of the base station;

 6 is a structural block diagram of a base station according to another embodiment of the present invention;

FIG. 7 is a structural block diagram of a gateway according to an embodiment of the present invention; FIG. 8 is a structural block diagram of a base station according to an embodiment of the present invention;

 FIG. 9 is a structural block diagram of a base station according to another embodiment of the present invention;

 FIG. 10 is a structural block diagram of a gateway according to an embodiment of the present invention;

 11 is a block diagram showing the structure of a communication system according to an embodiment of the present invention;

 FIG. 12 is a structural block diagram of a communication system according to another embodiment of the present invention. Detailed ways

 The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

 Shannon Shannon's Law is as follows:

R < C = W log ₂ (l + -) = W log ₂ (l +—^)

NW Ν ₀ ( ι )

 Where R represents the information transmission rate, C is the channel capacity in bits per second, and W represents the bandwidth, W. Represents the additive Gaussian white noise power spectral density, representing the average bit energy.

According to Shannon's law, by reducing the information transmission rate R, the average signal power 8 can be reduced. Moreover, the services in the existing network are diverse. Therefore, the QoS requirements of different services are required to be different. Therefore, it is feasible to reduce the S of the corresponding service under the premise of guaranteeing the QoS of different services. It can be seen from the function image of the equation (1) shown in Fig. 1 that there is a logarithmic relationship between the number of bits R transmitted without error in the network and the S of the required power, and the power S ₂ ratio required to transmit 2 bits at the same time. The power Si transmitted at one time is larger, that is, (^ > 2), thereby reducing the information transmission rate, so that the stretching transmission time can achieve energy saving. Please refer to FIG. 2, which is a flowchart of a method for a service scheduling method according to an embodiment of the present invention. This embodiment is mainly illustrated by applying the service scheduling method to a base station. The service scheduling method includes:

 Step 202: Determine, according to a current traffic volume of each user and a QoS requirement of each service, a minimum information transmission rate corresponding to each user under the QoS requirement;

The service to be sent to each user is buffered in the base station. Depending on the type of these services, the QoS requirements of each service are different. The QoS requirements usually include bandwidth requirements, delay requirements, packet error rate, packet loss rate, and delay jitter. The QoS requirements of each type of service are pre-stored in the base station. When there is a service that needs to be scheduled, the base station may first determine that the QoS is satisfied according to the QoS requirements of each service. The minimum message transmission rate required.

 It is assumed in the various embodiments herein that only one service per user needs to be scheduled to illustrate. If a user has multiple services that need to be scheduled, it can be considered that multiple users with a single service need to be scheduled for analysis. In this regard, this article is no longer - repeat.

 Step 204: Determine, according to the percentage of service completion in the previous sending period and the channel condition of each user in the previous sending period, the target information sending rate corresponding to each user in the current sending period, and the target information sending rate>the lowest information sending. Rate

 After the base station determines the lowest information transmission rate of each user, the target information transmission rate of each user may be determined based on the lowest information transmission rate, and the target information transmission rate may be greater than or equal to the lowest information transmission rate.

 The determination of the target information transmission rate may be related to the service completion percentage in the previous transmission period, and the service completion percentage is equal to (the sum of the actual information transmission rates of all users in the previous transmission period/the destination information transmission of all users in the previous transmission period) The sum of the rates). When the service completion percentage is not 100%, the target information transmission rate can be appropriately lowered.

 The determination of the target information transmission rate may also be related to the channel conditions of each user in the previous transmission period. When the channel condition of the user is good, the target information transmission rate may be appropriately increased.

 Step 206: In the current sending period, allocate a transmission resource and a transmitting power to each user according to a target information sending rate.

 After the base station determines the target information transmission rate for each user, the base station may allocate transmission resources and transmission power to each user according to the target information transmission rate in the current transmission period. In this embodiment, the transmission resource is an RB (Resource Block).

 After that, the base station may send service data to each user according to the transmission resource and the transmission power allocated for each user, since the actual information transmission rate is determined based on the allocated transmission power, and the transmission power is based on the target information transmission rate allocation. Therefore, the actual information transmission rate is usually also a value greater than or equal to the lowest information transmission rate. At this time, the actual information transmission rate is lower than the best-effort transmission rate at the time of transmission, thereby saving the transmission power.

In summary, the service scheduling method provided in this embodiment determines the minimum information transmission rate of each user according to the QoS requirement, and further determines that the service completion percentage is greater than or equal to the channel condition of each user in the previous transmission period. The target information transmission rate of the lowest information transmission rate is used to allocate the transmission resource and the transmission power by using the target information transmission rate; the problem of more energy consumption in the existing solution is solved; and the QoS requirement of the service can be ensured. Downlink transmission power according to The QoS requirements of different services are dynamically changed, thereby achieving the purpose of network energy conservation. Please refer to FIG. 3A, which shows a flowchart of a method for a service scheduling method provided in another embodiment of the present invention. This embodiment is still exemplified by applying the service scheduling method to a base station. The service scheduling method includes:

 Step 302: Allocate the received service to an integer trapped bucket corresponding to each user for shaping;

 Among the various types of services available, packet services account for a large part of the total business. The packet service has burstiness and self-similarity, in order to smooth the impact of the burstiness of the packet service on the service scheduling; and consider the self-similarity of the packet service in the service scheduling. In this embodiment, the service is shaped by shaping the leaky bucket. Specifically:

 After receiving the service delivered by the gateway, the base station allocates the received service to the shaping leaky bucket corresponding to each user for shaping. The plastic leaking bucket can adopt any one or a combination of two of the Leaky Bucket algorithm and the token bucket algorithm. Taking the leaky bucket algorithm as an example, this step includes the following substeps:

 1. The base station sets a leaky bucket for the user, the leaky bucket depth is b, and the leaky bucket outflow rate is r;

 2. When the base station receives the service of the user, it determines whether the current traffic volume in the leaked bucket of the user has exceeded the leaky bucket depth b. If the leaky bucket depth b is not exceeded, the received service is placed in the user's In the leaky bucket; if the leaky bucket depth b is exceeded, the received service is discarded;

 It should be noted that, when there is a service in the leaky bucket of the user, the base station sends a data packet scheduling service to the user every 1/r time slice, and the packet length of the data packet is variable or fixed, preferably stable. This results in a consistent data flow that smoothes the impact of bursty traffic on service scheduling.

 Step 304: Perform service classification according to the service type and QoS requirement of the corresponding service of each user, and set different priorities for different classified services.

 The base station may perform service classification according to the service type and QoS requirement of the corresponding service of each user in the process of shaping the received service into the shaping leaky bucket of each user, and setting different services for different classified services. Priority. For example, for a service type that is voice telephony data, QoS requires a higher priority for services with higher latency requirements; for example, for a service type that is e-mail data, QoS has a lower latency requirement, and is allocated. Lower priority and so on.

Step 306: Determine, according to the current traffic volume of each user and the QoS requirement of each service, a minimum information transmission rate corresponding to each user that meets the QoS requirement; After the base station puts the received service into the shaped leaky bucket of each user for shaping, the base station can determine the minimum corresponding to each user's QoS requirement according to the current traffic volume of each user and the QoS requirements of each service. Information transmission rate. Specifically, this step includes the following two sub-steps:

1. Determine a service arrival curve according to the current traffic volume in the shaped leaky bucket corresponding to each user;

 Taking the leaky bucket algorithm as an example, the traffic arrival curve of each user can be expressed as "(0 = "". As shown in Figure 3B.

 2. Determine the "rate-delay" service curve based on the service arrival curve and the QoS requirements of each service.

The "rate-delay" service curve corresponds to the lowest information transmission rate.

Each user's "rate-delay" service curve is modeled as a rate-delay curve as shown in ( ) in Figure 3B, with the expression

Where r _to is the propagation delay of the base station to the user.

After determining the arrival curve _a (t) according to the upper bound of the current traffic flow accumulation curve of each user, taking the t time slice as an example, the maximum delay boundary corresponding to the QoS requirement of each service is DelayBound, corresponding to ^{a (t} and W lateral distance; The buffer limit of the base station is Buf, corresponding to the longitudinal distance from W. These two parameters can determine the two points A and B of the service curve to determine the "rate-delay" service curve. The "delay" service curve corresponds to the lowest information transmission rate.

 Step 308: Determine, according to the percentage of service completion in the previous sending period and the channel condition of each user in the previous sending period, the target information sending rate corresponding to each user in the current sending period, and the target information sending rate>the lowest information sending. Rate

 After the base station determines the lowest information transmission rate of each user, the target information transmission rate of each user may be determined based on the lowest information transmission rate, and the target information transmission rate may be greater than or equal to the lowest information transmission rate.

 The determination of the target information transmission rate may be related to the service completion percentage in the previous transmission period, and the service completion percentage is equal to (the sum of the actual information transmission rates of all users in the previous transmission period/the destination information transmission of all users in the previous transmission period) The sum of the rates). Specifically, the base station determines the target information sending rate according to the percentage of service completion in the previous sending period, which may include:

 1. The base station detects whether the percentage of service completion in the previous transmission cycle is less than 100%;

2. If the base station detects that the percentage of service completion in the previous transmission cycle is less than 100%, then each will The user transmits the target information transmission rate in the current transmission period after the target information transmission rate in the previous transmission period is lowered. As a specific mode of lowering, it is assumed that the percentage of service completion in the previous transmission period is x%; then it is determined that the target information transmission rate of one user in the current transmission period is: (target information of the user in the previous transmission period) Send rate) *x%.

 The determination of the target information transmission rate may also be related to the channel conditions of each user in the previous transmission cycle. Specifically, the base station determines the target information sending rate according to the channel conditions of each user in the previous sending period, which may include:

 1. Determine whether the channel condition of the user in the previous transmission period is better than the average channel condition;

 For a user, the base station can determine whether the channel condition of the user in the previous transmission period is better than the average channel condition, and the average channel condition is the average of the channel conditions of all users in the previous transmission period.

 2. If the detection result is better than the average channel condition, determine the target information transmission rate>the minimum information transmission rate, and the target information transmission rate satisfies the preset energy consumption ratio requirement;

 If the base station detects that the channel condition of the user in the previous transmission period is better than the average channel condition, determining that the target information transmission rate of the user is greater than the lowest information transmission rate determined for the user, but at the same time, ensuring the determined target information The transmission rate can meet the preset energy consumption ratio requirements. Let the service data of each user be transmitted more under the condition of better channel conditions, and achieve the overall energy saving of the network by rationally utilizing the channel conditions.

 3. If the detection result is worse than the average channel condition, determine the target information transmission rate = the minimum information transmission rate.

 If the base station detects that the channel condition of the user in the previous transmission period is worse than the average channel condition, it is determined that the target information transmission rate of the user is equal to the lowest information transmission rate determined for the user. That is, the QoS requirements of the corresponding service of the user are guaranteed.

 So far, the base station determines the target transmission rate of each user in the current transmission period. In the following process, the base station can allocate transmission resources and transmission power to each user according to the target transmission rate determined for each user.

 Step 310: Detect whether the current number of users is greater than the maximum number of users that can provide services during the current sending period;

The number of current users that the base station is serving may be greater than the maximum number of users that can provide services in the current sending period. For example, the number of current users that the base station is serving is 78, but the maximum number of users that can provide services in the current sending period is only For 75, the base station may first detect whether the current number of users is greater than the maximum number of users that can provide services during the current transmission period. The maximum number of users that can provide services during the current transmission period is limited by the number of available resources of the control channel. For example, in TD-LTE (Time Division Long Term Evolution), the maximum number of users that can provide services in the current transmission period is equal to the CCE (Control Channel Element) available on the PDCCH (Physical Downlink Control Channel). , control channel unit) number.

 Step 312: If it is detected that the current number of users is greater than the maximum number of users, the number of users to be served in the current sending period is reduced according to the priority of the corresponding service of each user, so that the number of users to be served in the reduced current sending period is less than or equal to Maximum number of users;

 If the base station detects that the current number of users being served is greater than the maximum number of users that can provide services in the current sending period, the number of users to be served in the current sending period is reduced according to the priority of the corresponding service of each user, so that The number of users to be served during the reduced current transmission period is less than or equal to the maximum number of users. For example, the current number of users that the base station is serving is 78, but the maximum number of users that can provide services in the current transmission period is only 75, and the base station reduces the number of the first three users whose priority ranking is from low to high, only reserved. The 75 users with higher priority are the users to be served in the current sending cycle.

 Of course, if the base station detects that the current number of users being served is less than or equal to the maximum number of users that can provide services in the current transmission period, all current users that are serving are regarded as users to be served in the current transmission period.

 Step 314: According to the order of priority of each user's corresponding service from high to low, sequentially assign each user the transmission resource unit with the best channel gain for the user in the currently available transmission resource unit in the current transmission period, the channel. The gain is determined according to the channel conditions of the user in the previous transmission cycle;

 After the base station determines the number of users to provide the service in the current transmission period, the base station may first allocate each user the currently available transmission resource unit in the current transmission period. In this embodiment, the available transport resource unit is an available RB.

 Specifically, this step may include the following sub-steps:

 1. The base station allocates equal power to each RB, and initializes the allocation rate of all users to 0;

 2. The base station selects the RB with the best channel gain for the user with the highest priority service;

The corresponding service of each user has a priority, and the priority may be obtained from the priority generated in step 304, and the channel gain is determined according to the channel condition of the user in the previous sending period, and the channel condition may be from step 308. Get it in. When the base station starts to allocate RBs, it preferentially selects the RB with the best channel gain for the user with the highest priority among the current users. 3. The base station updates the RB allocation matrix, and re-determines the currently available RBs in all the RBs according to the allocated RBs, that is, the RBs are not allocated;

 4. Repeat steps 2 and 3 until all users' target information transmission rates meet the requirements or all RBs are allocated.

 If there is an unallocated transmission resource unit in the currently available transmission resource unit in the current transmission period, each of the remaining transmission resource units is allocated to the user with the best channel gain. In other words, if all users' target information transmission rates are satisfactory, but the available RBs have margins, the surplus RBs are allocated to the user with the greatest gain. Thus, for a user, in the service data fixed, more RBs are allocated, and the actual information transmission rate corresponding to each RB is smaller, and accordingly, the energy saving effect is better.

 If all of the RBs are allocated and the user's target information transmission rate requirement has not been met, a matrix of user uncompleted rates is returned.

 5. Output RB allocation matrix.

 Step 316, on the premise that the target information transmission rate of each user is met, the transmission power and the actual information transmission rate of each user on the allocated transmission resource unit are determined according to the principle of minimizing the power sum.

 After the base station allocates RBs for each user, the base station also needs to allocate transmit power to each user. The base station needs to determine each user's presence according to the principle of minimizing power and on the premise that the target information transmission rate of each user is met. Transmit power and actual information transmission rate on the allocated transmission resource unit. In other words, the base station can perform power injection by satisfying each user's target information transmission rate requirement and minimizing power and two conditions. Specifically, this step may include the following sub-steps:

 1. Initialization available RB set to all RBs;

 2. Calculate the power that the user should allocate on the "on RB" according to the theoretical optimal power formula;

3. For all ", if"^{< G} , then the "channel" is removed from the set, and the power allocated on the deleted channel is 0, repeat step 2 until all " ^≥G ". That is, if "^{< G} , it is considered that the target information transmission rate of the user is not satisfied.

 Wherein, represents a set of RBs assigned to user k.

 So far, the base station allocates corresponding transmission power to each user, and according to the transmission power and the amount of data to be transmitted, the actual information transmission rate can be determined.

Normally, according to the above power injection process, the actual information transmission rate will be equal to the target information transmission rate, and the service completion percentage is 100%. But if according to the above power injection process If the calculated minimum power is greater than the maximum transmit power of the base station, the base station needs to lower the actual information transmission rate of the lower priority user according to the priority of the service. At this time, the actual information transmission rate of the user may be smaller than the target information. The transfer rate, at which point, the service completion percentage is less than 100%. The base station can calculate the percentage of service completion in the current transmission period to use when determining the target information transmission rate of each user again in the next transmission period.

 Thereafter, the base station can perform traffic transmission using the RB and transmission power allocated for each user. During the transmission of the current transmission period, the base station may also acquire the channel condition of each user in the current transmission period, so as to be used when determining the target information transmission rate of each user in the next transmission period.

 In summary, the service scheduling method provided in this embodiment determines the minimum information transmission rate of each user according to the QoS requirement, and further determines that the service completion percentage is greater than or equal to the channel condition of each user in the previous transmission period. The target information transmission rate of the lowest information transmission rate, the transmission resource and the transmission power are allocated by using the target information transmission rate; the problem of more energy consumption in the existing solution is solved; and the downlink transmission can be achieved under the condition of ensuring the service QoS requirement The power dynamically changes according to the QoS requirements of different services, thereby achieving the purpose of network energy conservation. In addition, by using the shaping leaky bucket to shape the received service, the independence of the business arriving at each moment emphasized by the traditional Poisson process and the queuing theory is solved, and the association with the front and rear services is not considered. Describe the sudden and self-similar characteristics of the service, and achieve the sudden and self-similar characteristics of the business, and smooth the sudden effect of the service. Furthermore, the network energy-saving effect can be further realized by allocating transmission resources and transmission power to the user by minimizing the system energy consumption while satisfying the QoS requirements of the guaranteed service. The above embodiment is described only by performing network energy saving on the base station side. However, in order to achieve a better energy saving effect, the embodiment of the present invention also proposes a related embodiment for performing network power saving on the gateway side of the upper layer on the base station side. details as follows:

 Please refer to FIG. 4, which shows a flowchart of a method for controlling a service transmission rate provided in an embodiment of the present invention. This embodiment is mainly illustrated by applying the service transmission rate method to an S-GW (Serving Gateway). The method includes:

Step 402: Measure a service transmission rate when the service is sent to the base station in the current transmission period; each S-GW may be connected to one or more base stations, and then the S-GW sends services to each base station according to one transmission period, so that each The base station resends the corresponding service to each user. During the process in which the S-GW sends a service to the base station, the S-GW can measure the service transmission rate when the service is sent to the base station in the current transmission period. Step 404: Detect whether the service transmission rate of the current transmission period is greater than a preset maximum service transmission rate.

 Then, the S-GW can detect whether the service transmission rate of the current transmission period is greater than a preset maximum service transmission rate. The preset maximum service transmission rate characterizes the maximum service capability of the base station. The maximum service transmission rate may be reported to the S-GW by the base station in advance; or the S-GW may determine the peak service capability requirement of the base station according to the communication protocol used by the base station, for example, the LTE communication protocol may require the frequency efficiency of the base station. At 2 bps/Hz, the S-GW can assume that the maximum service capacity of the base station is 40 Mbps at 20 MHz bandwidth.

 Step 406: If it is detected that the service transmission rate of the current transmission period is greater than the maximum service transmission rate, adjust the service transmission rate of the next transmission period, so that the service transmission rate of the next transmission period is smaller than the maximum service transmission rate.

 If the S-GW detects that the service transmission rate to the base station in the current transmission period is greater than the maximum service transmission rate that the base station can bear, the S-GW adjusts the service transmission rate of the next transmission period, so that the service transmission of the next transmission period is performed. The rate is less than the maximum service transfer rate.

 In summary, the service transmission rate control method provided in this embodiment determines whether the service transmission rate of the current transmission period is greater than the maximum service transmission rate of the base station, and then adjusts the service transmission rate of the next transmission period; The problem of more energy consumption in the middle gateway side is achieved; the balance of the cell load of each base station or each base station can be balanced and matched, thereby achieving the overall energy saving control effect of the system. The following is an embodiment of the device in the embodiment of the present invention, which can be used to implement the method embodiment of the present invention. For technical details not disclosed in the embodiment of the device of the present invention, please refer to the corresponding method embodiment described above.

 Please refer to FIG. 5, which is a structural block diagram of a base station according to an embodiment of the present invention. The base station includes: a lowest rate determining module 520, a target rate determining module 540, and a resource allocating module 560.

 The lowest rate determining module 520 is configured to determine, according to the current traffic volume of each user and the QoS requirement of each service, a minimum information sending rate corresponding to each QoS requirement corresponding to each user;

 The target rate determining module 540 is configured to determine, according to a percentage of service completion in a previous sending period and a channel condition of each user in the last sending period, a target information sending rate corresponding to each user in a current sending period, where The target information transmission rate> the lowest information transmission rate determined by the lowest rate determination module;

a resource allocation module 560, configured to determine a mode according to the target rate in the current sending period The target information transmission rate determined by the block allocates transmission resources and transmission power for each user;

 The service completion percentage is equal to (the sum of the actual information transmission rates of all users in the previous transmission period/the sum of the target information transmission rates of all users in the previous transmission period;).

 In summary, the base station provided in this embodiment determines the minimum information transmission rate of each user according to the QoS requirement, and further determines that the service completion percentage is greater than or equal to the channel condition of each user in the previous transmission period. The target information transmission rate of the lowest information transmission rate, the transmission resource and the transmission power are allocated by using the target information transmission rate; the problem of more energy consumption in the existing solution is solved; and the downlink transmission can be achieved under the condition of ensuring the service QoS requirement The power dynamically changes according to the QoS requirements of different services, thereby achieving the purpose of network energy conservation. Please refer to FIG. 6, which is a structural block diagram of a base station according to another embodiment of the present invention. The base station includes: a service shaping module 510, a service classification module 515, a lowest rate determination module 520, a target rate determination module 540, a user number detection module 550, a service user number adjustment module 555, and a resource allocation module 560.

 The service shaping module 510 is configured to allocate the received service to the shaping leak bucket corresponding to each user for shaping;

 The service classification module 515 is configured to perform service classification according to the service type and QoS requirement of the corresponding service of each user shaped by the service shaping module 510, and set different priorities for different classified services. The lowest rate determining module 520 is configured to The lowest information transmission rate corresponding to each QoS requirement corresponding to each user is determined according to the current traffic volume of each user shaped by the traffic shaping module 510 and the QoS requirements of each service.

 Specifically, the lowest rate determining module 520 includes: an arrival curve calculation unit 522 and a service curve calculation unit 524;

 The arrival curve calculation unit 522 is configured to determine a service arrival curve according to the current traffic volume in the shaping leak bucket corresponding to each user shaped by the service shaping module 510;

 The service rate calculation unit 524 is configured to determine a "rate-delay" service curve according to the service arrival curve calculated by the arrival curve calculation unit 522 and the QoS requirement of each service, where the "rate-delay" service curve corresponds The lowest information transmission rate.

The target rate determining module 540 is configured to determine, according to a percentage of service completion in a previous sending period and a channel condition of each user in the last sending period, a target information sending rate corresponding to each user in a current sending period, where Target information transmission rate > the lowest rate determination module determines the most Low message transmission rate.

 Specifically, the target rate determining module 540 may include: a service detecting unit 542 and a speed adjusting unit 546;

 The service detecting unit 542 is configured to detect whether the percentage of service completion in the last sending period is less than 100%, where the percentage of service completion is equal to (the sum of the actual information sending rates of all users in the previous sending period/ The sum of the target information transmission rates of all users in the previous transmission cycle).

 The speed adjustment unit 546 is configured to: if the service detecting unit 542 detects that the service completion percentage in the last transmission period is less than 100%, send target information of each user in the previous transmission period. The rate is lowered as the target information transmission rate in the current transmission period. The speed adjustment unit 546 may be specifically configured to: set a service completion percentage in the previous transmission period to be X%; and determine a target information transmission rate of a user in the current transmission period. It is: (the target information transmission rate of the user in the previous transmission period) *X%.

 Specifically, the target rate determining module 540 may further include: a channel detecting unit 544 and a speed adjusting unit 546;

 The channel detecting unit 544 is configured to determine whether a channel condition of the user in the previous transmission period is better than an average channel condition;

 The speed adjustment unit 546 is configured to determine, if the detection result of the channel detecting unit 544 is better than the average channel condition, the target information transmission rate > the lowest information transmission rate, and send the target information The rate meets the preset energy consumption ratio requirement;

 The speed adjustment unit 546 is configured to determine the target information transmission rate=the lowest information transmission rate if the detection result of the channel detection unit 544 is worse than the average channel condition.

 The user number detecting module 550 is configured to detect, after the target rate determining module 540 determines the target information sending rate, whether the current number of users is greater than the maximum number of users that can provide services in the current sending period;

 The service user number adjustment module 555 is configured to: if the user number detection module 550 detects that the current number of users is greater than the maximum number of users, the priority of each user's corresponding service determined according to the service classification module The level reduces the number of users to be served in the current sending period, such that the number of users to be served in the reduced current sending period is less than or equal to the maximum number of users.

 a resource allocation module 560, configured to allocate a transmission resource and a transmission power to each user according to the target information transmission rate determined by the target rate determination module in the current transmission period;

Specifically, the resource allocation module 560 includes: a resource allocation unit 562 and a power allocation list Yuan 564.

 The resource allocating unit 562 is configured to sequentially allocate, to each user, the currently available transmission in the current sending period according to the priority of the priority service of each user set by the target classification module 515 from high to low. a transmission resource unit that is the best channel gain for the user in the resource unit, the channel gain being determined according to a channel condition of the user in a previous transmission period;

 The power allocation unit 564 is configured to determine, according to the principle of minimizing power, the resource allocation of each user on the premise that the target information transmission rate of each user determined by the target rate determining module 540 is met. The transmit power and the actual information transfer rate on the transmission resource unit allocated by unit 564.

 Further, the resource allocation unit 564 is further configured to allocate each of the remaining transmission resource units to the channel gain if the currently available transmission resource unit in the current transmission period further has an unallocated transmission resource unit. Good user.

 In summary, the base station provided in this embodiment determines the minimum information transmission rate of each user according to the QoS requirement, and further determines the maximum information according to the service completion percentage and the channel condition of each user in the previous transmission period. The target information transmission rate of the transmission rate is used to allocate the transmission resource and the transmission power by using the target information transmission rate; the problem of more energy consumption in the existing solution is solved; and the downlink transmission power can be made according to the QoS requirement of the guaranteed service. The QoS requirements of different services are dynamically changed, thereby achieving the purpose of network energy conservation. In addition, by using the shaping leaky bucket to shape the received service, the independence of the business arriving at each moment emphasized by the traditional Poisson process and the queuing theory is solved, and the association with the front and rear services is not considered. Describe the sudden and self-similar characteristics of the service, and achieve the sudden and self-similar characteristics of the business, and smooth the sudden effect of the service. Furthermore, the network energy-saving effect can be further realized by allocating transmission resources and transmission power to the user by minimizing the system energy consumption while satisfying the QoS requirements of the guaranteed service. Please refer to FIG. 7, which is a structural block diagram of a gateway provided by an embodiment of the present invention. The gateway includes: a rate measurement module 720, a rate detection module 740, and a rate adjustment module 760.

 The rate measurement module 720 is configured to measure a service transmission rate when the service is sent to the base station in the current sending period.

The rate detection module 740 is configured to detect whether the service transmission rate of the current transmission period measured by the rate measurement module 720 is greater than a preset maximum service transmission rate; the preset maximum service transmission rate is reported by the base station in advance. Or according to the communication protocol adopted by the base station to the base station The peak service capability requirements are determined.

 The rate adjustment module 760 is configured to: if the rate detection module 740 detects that the service transmission rate of the current transmission period is greater than the maximum service transmission rate, adjust a service transmission rate of the next transmission period, so that the next transmission period is The service transmission rate is less than the maximum service transmission rate.

 In summary, the gateway provided in this embodiment determines whether the service transmission rate of the current transmission period is greater than the maximum service transmission rate of the base station, and then adjusts the service transmission rate of the next transmission period; It is a problem that consumes a lot of money; it achieves the effect of balancing the cell load of each base station or each base station to achieve the overall energy-saving control of the system. Please refer to FIG. 8, which is a structural block diagram of a base station according to an embodiment of the present invention. The base station includes a processor 820.

 The processor 820 is configured to determine, according to a current traffic volume of each user and a QoS requirement of each service, a minimum information transmission rate corresponding to each QoS requirement corresponding to each user;

 The processor 820 is further configured to determine, according to a percentage of service completion in a previous sending period and a channel condition of each user in the previous sending period, a target information sending rate corresponding to each user in a current sending period, The target information transmission rate > the lowest information transmission rate.

 The processor 820 is further configured to allocate a transmission resource and a transmission power to each user according to the target information transmission rate in the current transmission period;

 The service completion percentage is equal to (the sum of the actual information transmission rates of all users in the previous transmission period/the sum of the target information transmission rates of all users in the previous transmission period;).

 In summary, the base station provided in this embodiment determines the minimum information transmission rate of each user according to the QoS requirement, and further determines that the service completion percentage is greater than or equal to the channel condition of each user in the previous transmission period. The target information transmission rate of the lowest information transmission rate, the transmission resource and the transmission power are allocated by using the target information transmission rate; the problem of more energy consumption in the existing solution is solved; and the downlink transmission can be achieved under the condition of ensuring the service QoS requirement The power dynamically changes according to the QoS requirements of different services, thereby achieving the purpose of network energy conservation. Please refer to FIG. 9, which is a structural block diagram of a base station according to another embodiment of the present invention. The base station includes a receiver 810, a processor 820, and a transmitter 830.

The processor 820 is configured to allocate the service received by the receiver 810 to a corresponding one for each user. Shaping in the plastic leaking bucket;

 The processor 820 is further configured to perform service classification according to a service type and a QoS requirement of a corresponding service of each user, and set different priorities for different classified services;

 The processor 820 is configured to determine, according to the current traffic volume of each user and the QoS requirement of each service, a minimum information transmission rate corresponding to each QoS requirement corresponding to each user. Specifically, the processor 820 is configured to determine a service arrival curve according to a current traffic volume in the shaped leaky bucket corresponding to each user;

 The processor 820 is configured to determine a "rate-delay" service curve according to the service arrival curve and QoS requirements of each service, where the "rate-delay" service curve corresponds to the lowest information transmission rate.

 The processor 820 is further configured to determine, according to a percentage of service completion in a previous sending period and a channel condition of each user in the previous sending period, a target information sending rate corresponding to each user in a current sending period, The minimum information transmission rate of the target information transmission rate. When the processor 820 determines the target information transmission rate corresponding to each user in the current transmission period based on the service completion percentage in the previous transmission period:

 The processor 820 is configured to detect whether the percentage of service completion in the last sending period is less than 100%;

 The processor 820 is configured to: if the service completion percentage in the previous transmission period is less than 100%, reduce the target information transmission rate of each user in the previous transmission period as the The target information transmission rate in the current transmission cycle. The processor 820 is configured to set a service completion percentage in the last transmission period to be X%, and determine a target information transmission rate of the user in the current transmission period as: The target information transmission rate of the user in the previous transmission period is *X%.

 When the processor 820 determines the target information transmission rate corresponding to each user in the current transmission period according to the channel condition of each user in the previous transmission period in the previous transmission period:

 The processor 820 is configured to determine whether a channel condition of the user in the previous transmission period is better than an average channel condition;

 The processor 820 is configured to determine, according to the average channel condition, that the target information sending rate is the lowest information sending rate, and the target information sending rate meets a preset energy consumption ratio. Claim;

The processor 820 is configured to determine, if the detection result is worse than the average channel condition, Target information transmission rate = the lowest information transmission rate.

 The processor 820 is further configured to detect whether the current number of users is greater than a maximum number of users that can provide services during the current sending period;

 The processor 820 is further configured to: if the number of the current users is greater than the maximum number of users, reduce the number of users to be served in the current sending period according to the priority of the corresponding service of each user, so that The number of users to be served in the reduced current transmission period is less than or equal to the maximum number of users.

 The processor 820 is configured to acquire a priority of a corresponding service of each user and a channel condition of each user in a previous sending period;

 The processor 820 is configured to sequentially allocate, to the user, the currently available transmission resource unit in the current transmission period to the user according to the priority of the corresponding service of each user from high to low. The channel gains the best transmission resource unit, and the channel gain is determined according to the channel condition of the user in the previous transmission period;

 The processor 820 is configured to determine, according to the principle of minimizing power sum, the transmission power and actuality of each user on the allocated transmission resource unit, on the premise that the target information transmission rate of each user is satisfied. Information transfer rate.

 The processor 820 is further configured to: if each of the currently available transmission resource units in the current transmission period still has an unallocated transmission resource unit, allocate each of the remaining transmission resource units to a user with the best channel gain.

 The processor 820 is further configured to control the transmitter 830 to send a service by using a transmission resource unit, a transmission power, and an actual information transmission rate allocated for each user.

In summary, the base station provided in this embodiment determines the minimum information transmission rate of each user according to the QoS requirement, and further determines the maximum information according to the service completion percentage and the channel condition of each user in the previous transmission period. The target information transmission rate of the transmission rate is used to allocate the transmission resource and the transmission power by using the target information transmission rate; the problem of more energy consumption in the existing solution is solved; and the downlink transmission power can be made according to the QoS requirement of the guaranteed service. The QoS requirements of different services are dynamically changed, thereby achieving the purpose of network energy conservation. In addition, by using the shaping leaky bucket to shape the received service, the independence of the business arriving at each moment emphasized by the traditional Poisson process and the queuing theory is solved, and the association with the front and rear services is not considered. Describe the sudden and self-similar characteristics of the service, and achieve the sudden and self-similar characteristics of the business, and smooth the sudden effect of the service. Furthermore, by minimizing the QoS requirements of the guaranteed service, The system energy consumption allocates transmission resources and transmission power to users to achieve further network energy saving effects. Please refer to FIG. 10, which shows a structural block diagram of a gateway provided by an embodiment of the present invention. The gateway includes: a processor 1020 and a transmit controller 1040.

 The processor 1020 is configured to measure a service transmission rate when the transmitting controller 1040 sends a service to the base station in a current sending period.

 The processor 1020 is configured to detect whether a service transmission rate of the current transmission period is greater than a preset maximum service transmission rate. The preset maximum service transmission rate is previously reported by the base station or used according to the base station. The communication protocol is determined by the peak service capability requirements of the base station.

 The processor 1040 is configured to: if it is detected that the service transmission rate of the current transmission period is greater than the maximum service transmission rate, adjust a service transmission rate of the transmission controller 1040 in a next transmission period, so that the service of the next transmission period is performed. The transmission rate is less than the maximum service transmission rate.

 In summary, the gateway provided in this embodiment determines whether the service transmission rate of the current transmission period is greater than the maximum service transmission rate of the base station, and then adjusts the service transmission rate of the next transmission period; It is a problem that consumes a lot of money; it achieves the effect of balancing the cell load of each base station or each base station to achieve the overall energy-saving control of the system. Please refer to FIG. 11, which is a structural block diagram of a communication system according to an embodiment of the present invention. The communication system includes at least one gateway 1120 and at least one base station 1140.

 The gateway 1120 may be the gateway provided by the embodiment corresponding to FIG.

 The base station 1140 may be the base station provided by the embodiment corresponding to FIG. 5 or FIG. 6.

 In summary, the communication system provided by the embodiment reduces the transmission rate and lengthens the transmission time on both sides of the gateway and the base station; and solves the problem that the energy consumption of the communication system in the existing solution is large; The base station can perform equalization matching on the cell load of each base station or each base station, so that the base station can schedule services to the user based on the lowest information transmission rate, thereby achieving the overall energy-saving control effect of the system. Referring to FIG. 12, a block diagram showing the structure of a communication system according to an embodiment of the present invention is shown. The communication system includes at least one gateway 1220 and at least one base station 1240.

The gateway 1220 may be the gateway provided by the embodiment corresponding to FIG. 10. The base station 1240 may be the base station provided by the embodiment corresponding to FIG. 8 or FIG. 9. In summary, the communication system provided by the embodiment reduces the transmission rate and lengthens the transmission time on both sides of the gateway and the base station; and solves the problem that the energy consumption of the communication system in the existing solution is large; The base station can perform equalization matching on the cell load of each base station or each base station, so that the base station can schedule services to the user based on the lowest information transmission rate, thereby achieving the overall energy-saving control effect of the system. A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

claims

1. A service scheduling method, characterized in that the method includes:

Determine the minimum information sending rate corresponding to each user that meets the QoS requirements based on the current business volume of each user and the QoS requirements of each service;

The target information transmission rate corresponding to each user in the current transmission cycle is determined according to the service completion percentage in the previous transmission cycle and the channel condition of each user in the previous transmission cycle, and the target information transmission rate > the Minimum message sending rate;

In the current transmission cycle, allocate transmission resources and transmission power to each user according to the target information transmission rate;

Wherein, the service completion percentage is equal to (the sum of the actual information sending rates of all users in the previous sending cycle/the sum of the target information sending rates of all users in the previous sending cycle;).

2. The service scheduling method according to claim 1, characterized in that, the corresponding service in the current transmission cycle is determined based on the service completion percentage in the previous transmission cycle and the channel condition of each user in the previous transmission cycle. Regarding the target information sending rate of each user, the target information sending rate > the minimum information sending rate, including:

Detect whether the service completion percentage in the previous sending cycle is less than 100%;

If it is detected that the service completion percentage in the previous sending cycle is less than 100%, then the target information sending rate of each user in the previous sending cycle is lowered and sent as the target information in the current sending cycle. rate.

3. The service scheduling method according to claim 2, wherein the last information transmission rate of each user in the previous transmission cycle is lowered as the target information in the current transmission cycle. Sending rate, including:

Assume that the service completion percentage in the previous sending cycle is X%;

It is determined that the target information sending rate of a user in the current sending cycle is: (the target information sending rate of the user in the previous sending cycle) *X%.

4. The service scheduling method according to claim 1, characterized in that, the current time is determined based on the service completion percentage in the previous transmission cycle and the channel condition of each user in the previous transmission cycle. The target information sending rate corresponding to each user in the previous sending cycle includes:

Determine whether the user's channel conditions in the previous transmission cycle are better than the average channel conditions;

If the detection result is better than the average channel condition, it is determined that the target information transmission rate > the minimum information transmission rate, and the target information transmission rate meets the preset energy consumption ratio requirement; if the detection result is worse than If the average channel condition is determined, it is determined that the target information transmission rate = the minimum information transmission rate.

5. The service scheduling method according to any one of claims 1 to 4, characterized in that: determining the current traffic of each user in the current transmission cycle based on the current traffic volume of each user and the QoS requirements of each service. Before meeting the minimum information sending rate under the QoS requirements, it also includes:

Allocate the received services to the shaping leaky bucket corresponding to each user for shaping; Determine the QoS requirements corresponding to each user according to the current traffic volume of each user and the QoS requirements of each service. The minimum message sending rate below, including:

Determine the service arrival curve according to the current traffic volume in the shaping leaky bucket corresponding to each user; Determine the "rate-delay" service curve according to the service arrival curve and the QoS requirements of each service, the "rate-delay" "The service curve corresponds to the stated minimum message sending rate.

6. The service scheduling method according to any one of claims 1 to 5, characterized in that, in the current transmission cycle, allocating transmission resources and transmission power to each user according to the target information transmission rate includes: :

According to the order of priority of the corresponding services of each user from high to low, each user is sequentially allocated to each user the transmission resource that has the best channel gain for the user among the currently available transmission resource units in the current transmission period. Unit, the channel gain is determined based on the channel condition of the user in the previous transmission cycle;

On the premise that the target information transmission rate of each user is met, the transmit power and actual information transmission rate of each user on the allocated transmission resource unit are determined according to the principle of minimizing the sum of power.

7. The service scheduling method according to claim 6, characterized in that, according to the order from high to low of the priority of the corresponding service of each user, allocate to each user in turn in the current transmission cycle. Among the currently available transmission resource units, the transmission resource unit with the best channel gain for the user After yuan, it also includes:

If there are unallocated transmission resource units among the currently available transmission resource units in the current transmission cycle, each remaining transmission resource unit will be allocated to the user with the best channel gain.

8. The service scheduling method according to claim 6 or 7, characterized in that, in the current transmission cycle, before allocating transmission resources and transmission power to each user according to the target information transmission rate, the method further includes: :

Classify services according to the service type and QoS requirements of each user's corresponding service, and set different priorities for different classified services;

Detect whether the current number of users is greater than the maximum number of users that can provide services in the current transmission cycle; if it is detected that the current number of users is greater than the maximum number of users, reduce the number of users according to the priority of the corresponding service of each user. The number of users to be served by the current sending cycle is such that the reduced number of users to be served by the current sending cycle is less than or equal to the maximum number of users.

9. A service transmission rate control method, characterized in that the method includes:

Measure the service transmission rate when sending services to the base station in the current transmission cycle;

Detect whether the service transmission rate of the current sending cycle is greater than the preset maximum service transmission rate;

If it is detected that the service transmission rate of the current transmission cycle is greater than the maximum service transmission rate, the service transmission rate of the next transmission cycle is adjusted so that the service transmission rate of the next transmission cycle is less than the maximum service transmission rate.

10. The service transmission rate control method according to claim 9, characterized in that the preset maximum service transmission rate is reported by the base station in advance or set to the base station according to the communication protocol adopted by the base station. The peak service capacity requirements are determined.

11. A base station, characterized in that, the base station includes:

A minimum rate determination module, configured to determine the minimum information sending rate corresponding to each user that meets the QoS requirements based on the current business volume of each user and the QoS requirements of each service;

A target rate determination module, configured to determine the target rate corresponding to each user in the current transmission cycle based on the service completion percentage in the previous transmission cycle and the channel conditions of each user in the previous transmission cycle. Target information transmission rate, the target information transmission rate > the minimum information transmission rate determined by the minimum rate determination module;

A resource allocation module, configured to allocate transmission resources and transmission power to each user according to the target information transmission rate determined by the target rate determination module in the current transmission cycle;

Wherein, the service completion percentage is equal to (the sum of the actual information sending rates of all users in the previous sending cycle/the sum of the target information sending rates of all users in the previous sending cycle;).

12. The base station according to claim 11, characterized in that the target rate determination module includes: a service detection unit and a speed adjustment unit;

The service detection unit is used to detect whether the service completion percentage in the previous sending cycle is less than 100%;

The speed adjustment unit is configured to adjust the target information transmission rate of each user in the previous transmission cycle if the service detection unit detects that the service completion percentage in the previous transmission cycle is less than 100%. The lower value is used as the target information sending rate in the current sending cycle.

13. The base station according to claim 12, characterized in that, the speed adjustment unit is specifically configured to set the service completion percentage in the previous transmission cycle to X%; determine a user in the current transmission cycle The target information sending rate is: (the user's target information sending rate in the last sending cycle) *X%.

14. The base station according to claim 11, characterized in that the target rate determination module includes: a channel detection unit and a speed adjustment unit;

The channel detection unit is used to determine whether the user's channel condition in the previous transmission cycle is better than the average channel condition;

The speed adjustment unit is configured to determine that the target information transmission rate > the minimum information transmission rate if the detection result of the channel detection unit is better than the average channel condition, and the target information transmission rate satisfies Preset energy consumption ratio requirements;

The speed adjustment unit is configured to determine that the target information transmission rate = the minimum information transmission rate if the detection result of the channel detection unit is worse than the average channel condition.

15. The base station according to any one of claims 11 to 14, characterized in that, the base station further Includes: business shaping module;

The business shaping module is used to allocate the received business to the shaping leaky bucket corresponding to each user for shaping;

The minimum rate determination module includes: an arrival curve calculation unit and a service curve calculation unit; the arrival curve calculation unit is used to determine the current business in the shaping leaky bucket corresponding to each user according to the business shaping module. Quantitatively determine the business arrival curve;

The service curve calculation unit is used to determine the "rate-delay" service curve based on the service arrival curve calculated by the arrival curve calculation unit and the QoS requirements of each service, and the "rate-delay" service curve corresponds to the minimum message sending rate.

16. The base station according to any one of claims 11 to 15, characterized in that the resource allocation module includes: a resource allocation unit and a power allocation unit;

The resource allocation unit is configured to allocate channels to each user in the currently available transmission resource unit in the current transmission cycle to each user in order according to the priority of the corresponding service of each user. The transmission resource unit with the best gain, the channel gain is determined based on the channel condition of the user in the previous transmission cycle obtained by the condition acquisition unit;

The power allocation unit is configured to determine, on the premise that the target information transmission rate of each user determined by the target rate determination module is met, according to the principle of minimizing the power sum to determine the allocated transmission resource unit for each user. transmit power and actual information transmission rate.

17. The base station according to claim 16, wherein the resource allocation unit is further configured to: if there are unallocated transmission resource units in the currently available transmission resource units in the current transmission cycle, allocate the remaining transmission resource units to Each transmission resource unit is allocated to the user with the best channel gain.

18. The base station according to claim 16 or 17, characterized in that, the base station further includes: a service classification module, a user number detection module and a service user number adjustment module;

The service classification module is used to classify services according to the service type and QoS requirements of each user's corresponding service, and to set different priorities for different classifications of services;

The user number detection module is used to detect whether the current number of users is greater than the maximum number of users that can provide services in the current sending cycle;

The service user number adjustment module is used to adjust the service user number if the user number detection module detects the current user number. If the number of households is greater than the maximum number of users, then the number of users to be served by the current sending cycle is reduced according to the priority of the corresponding service of each user determined by the business classification module, so that the reduced number of users to be served by the current sending cycle is The number of users is less than or equal to the maximum number of users.

19. A gateway, characterized in that the gateway includes:

The rate measurement module is used to measure the service transmission rate when sending services to the base station in the current transmission cycle;

A rate detection module, configured to detect whether the service transmission rate of the current transmission cycle measured by the rate measurement module is greater than the preset maximum service transmission rate;

A rate adjustment module, configured to, if the rate detection module detects that the service transmission rate of the current transmission cycle is greater than the maximum service transmission rate, adjust the service transmission rate of the next transmission cycle so that the service transmission rate of the next transmission cycle The rate is less than the maximum service transmission rate.

20. The gateway according to claim 19, characterized in that, the preset maximum service transmission rate is the peak service capability of the base station reported in advance by the base station or according to the communication protocol adopted by the base station. Requirements are certain.

21. A base station, characterized in that, the base station includes:

A processor, configured to determine the minimum information sending rate corresponding to each user that meets the QoS requirements based on the current business volume of each user and the QoS requirements of each service;

The processor is further configured to determine the target information transmission rate corresponding to each user in the current transmission cycle based on the service completion percentage in the previous transmission cycle and the channel condition of each user in the previous transmission cycle, so The minimum information sending rate described in "the target information sending rate";

The processor is also configured to allocate transmission resources and transmission power to each user according to the target information transmission rate in the current transmission cycle;

Wherein, the service completion percentage is equal to (the sum of the actual information sending rates of all users in the previous sending cycle/the sum of the target information sending rates of all users in the previous sending cycle;).

22. The base station according to claim 21, characterized in that:

The processor is configured to detect whether the service completion percentage in the previous sending cycle is less than 100%; The processor is configured to detect that the service completion percentage in the last sending cycle is less than

100%, then the target information sending rate of each user in the previous sending cycle is lowered and used as the target information sending rate in the current sending cycle.

23. The base station according to claim 22, characterized in that:

The processor is configured to set the service completion percentage in the previous sending cycle as X%; determine the target information sending rate of a user in the current sending cycle as: (described in the previous sending cycle User's target message sending rate) *X%.

24. The base station according to claim 21, characterized in that:

The processor is used to determine whether the channel condition of the user in the previous transmission cycle is better than the average channel condition;

The processor is configured to determine that the target information transmission rate > the minimum information transmission rate if the detection result is better than the average channel condition, and the target information transmission rate meets a preset energy consumption ratio requirement ;

The processor is configured to determine that the target information transmission rate = the minimum information transmission rate if the detection result is worse than the average channel condition.

25. The base station according to any one of claims 21 to 24, characterized in that, the base station further includes: a receiver;

The processor is also configured to allocate the services received by the receiver to the shaping leaky bucket corresponding to each user for shaping;

The processor is used to determine the service arrival curve according to the current traffic volume in the shaping leaky bucket corresponding to each user;

The processor is configured to determine a "rate-delay" service curve based on the service arrival curve and the QoS requirements of each service, and the "rate-delay" service curve corresponds to the minimum information sending rate.

26. The base station according to any one of claims 21 to 25, characterized in that:

The processor is configured to sequentially allocate to each user the currently available transmission resource units in the current transmission cycle for the user according to the priority of the corresponding services of each user. The transmission resource unit with the best channel gain. The channel gain is based on the user’s last transmission. Channel conditions during the cycle are determined;

The processor is configured to determine the transmit power and actual information of each user on the allocated transmission resource unit in accordance with the principle of minimizing the power sum on the premise of meeting the target information transmission rate of each user. Transmission rate.

27. The base station according to claim 26, characterized in that, the processor is further configured to: if there are unallocated transmission resource units in the currently available transmission resource units in the current transmission cycle, all remaining transmission resource units are Transmission resource units are allocated to users with the best channel gain.

28. The base station according to claim 26 or 27, characterized in that:

The processor is also used to classify services according to the service type and QoS requirements of each user's corresponding service, and set different priorities for different classified services;

The processor is also used to detect whether the current number of users is greater than the maximum number of users that can be served by the current sending cycle;

The processor is further configured to, if it is detected that the current number of users is greater than the maximum number of users, reduce the number of users to be served by the current sending cycle according to the priority of the corresponding service of each user, so that the number of users to be served by the current sending cycle is reduced. The number of users to be served in the current sending cycle is less than or equal to the maximum number of users.

29. A gateway, characterized in that the gateway includes:

The processor is used to measure the service transmission rate when sending services to the base station in the current transmission cycle; the processor is used to detect whether the service transmission rate in the current transmission cycle is greater than the preset maximum service transmission rate;

The processor is configured to adjust the service transmission rate of the next transmission cycle so that the service transmission rate of the next transmission cycle is less than the maximum service transmission rate if it is detected that the service transmission rate of the current transmission cycle is greater than the maximum service transmission rate. Maximum service transfer rate.

30. The gateway according to claim 29, wherein the preset maximum service transmission rate is the peak service capability of the base station reported in advance by the base station or according to the communication protocol adopted by the base station. Requirements are certain.

31. A communication system, characterized by comprising the base station as claimed in any one of claims 11 to 18, and the gateway as claimed in claim 19 or 20.

32. A communication system, characterized by comprising a base station as claimed in any one of claims 21 to 28, and a gateway as claimed in claim 29 or 30.