CN107889187B - Method, device and electronic device for terminal access to base station - Google Patents
Method, device and electronic device for terminal access to base station Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/02—Access restriction performed under specific conditions
- H04W48/06—Access restriction performed under specific conditions based on traffic conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
本发明实施例提供了终端接入基站的方法、装置和电子设备。待接入基站通过获取终端在待接入基站上每个子信道上的增益，得到终端的子信道优先权列表，增益越大优先权越高，之后按照子信道优先权列表中各子信道的优先权顺序，确定终端的待接入子信道；获取待接入子信道中当前接入的设备数量；当获取的设备数量不大于待接入子信道对应的第一预设数量阈值时，预测终端接入待接入子信道后待接入子信道的第一能量效率，向终端发送第一能量效率，用于终端根据第一能量效率确定是否接入待接入基站，以提高终端与基站的上行通信过程中的能量效率。
Embodiments of the present invention provide a method, an apparatus, and an electronic device for a terminal to access a base station. The base station to be accessed obtains the subchannel priority list of the terminal by obtaining the gain of the terminal on each subchannel on the base station to be accessed. The greater the gain, the higher the priority, and then the priority of each subchannel in the subchannel priority list determine the sub-channel to be accessed by the terminal; obtain the number of devices currently accessed in the sub-channel to be accessed; when the acquired number of devices is not greater than the first preset number threshold corresponding to the sub-channel to be accessed, predict the terminal After accessing the subchannel to be accessed, the first energy efficiency of the subchannel to be accessed is sent, and the first energy efficiency is sent to the terminal, which is used by the terminal to determine whether to access the base station to be accessed according to the first energy efficiency, so as to improve the communication between the terminal and the base station. Energy efficiency during upstream communication.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for accessing a terminal to a base station, and an electronic device.
Background
The heterogeneous network is a multi-element network composed of multiple wireless access points, such as macro base stations, micro base stations, home base stations and relay nodes. Currently, as the rapid increase of the number of terminals and the requirement of wide coverage and high throughput of cells for their widespread applications have prompted the convergence of heterogeneous networks and non-orthogonal multiple access technologies, on the one hand, the seamless coverage of heterogeneous networks, especially the deployment of ultra-dense networks, can effectively meet the increasing number of wireless terminals. On the other hand, the non-orthogonal multiple access technology of the power domain enables multiple users to perform superposition transmission in the same time and bandwidth through power difference, and meanwhile, the serial interference elimination technology is utilized to perform signal separation at a receiving end, so that the throughput of the cellular network is effectively improved.
Currently, a terminal used by a user accesses a base station in a heterogeneous network, and an access process of the terminal used by the user selects the accessed base station based on the strength of received power.
Disclosure of Invention
The embodiment of the invention aims to provide a method and a device for accessing a terminal to a base station and electronic equipment, so as to improve the energy efficiency in the uplink communication process of the terminal and the base station. The specific technical scheme is as follows:
in a first aspect, a method for a terminal to access a base station is provided, and the method may include:
acquiring the gain of a terminal on each sub-channel of a base station to be accessed;
obtaining a subchannel priority list of a terminal based on the gain of the terminal on each subchannel on a base station to be accessed, wherein the higher the gain is, the higher the priority is;
determining a sub-channel to be accessed of the terminal according to the priority sequence of each sub-channel in the sub-channel priority list;
acquiring the number of currently accessed devices in a sub-channel to be accessed;
when the obtained number of the devices is not larger than a first preset number threshold corresponding to the sub-channel to be accessed, predicting first energy efficiency of the sub-channel to be accessed after the terminal is accessed to the sub-channel to be accessed;
and sending the first energy efficiency to the terminal, wherein the terminal determines whether to access the base station to be accessed according to the first energy efficiency.
In an optional example, the method may further comprise: when the obtained number of the devices is smaller than a second preset number threshold and larger than a first preset number threshold, determining the current energy efficiency of the sub-channel to be accessed as a second energy efficiency, wherein the second preset number threshold is larger than the first preset number threshold; when the obtained equipment number is smaller than a second preset number threshold and larger than a first preset number threshold, predicting first energy efficiency of a sub-channel to be accessed after the terminal accesses the sub-channel to be accessed; when the first energy efficiency is greater than the second energy efficiency, the step of transmitting the first energy efficiency to the terminal is performed.
In an optional example, the method may further comprise: and when the acquired number of the devices is not less than a second preset number threshold, canceling the sending of the first energy efficiency to the terminal.
In an optional example, obtaining the gain of the terminal on each subchannel on the base station to be accessed includes: and determining the gain of each subchannel of the terminal on the base station to be accessed based on a channel estimation algorithm.
In an alternative example, predicting a first energy efficiency of a sub-channel to be accessed after a terminal accesses the sub-channel to be accessed includes: predicting the data transmission rate on the sub-channel to be accessed after the terminal is accessed to the sub-channel to be accessed by using a Shannon formula and a power distribution algorithm, and predicting the data transmission power on the sub-channel to be accessed after the terminal is accessed to the sub-channel to be accessed by using the power distribution algorithm; and determining the ratio of the data transmission rate on the sub-channel to be accessed to the data transmission power on the sub-channel to be accessed as the first energy efficiency of the sub-channel to be accessed after the terminal predicts the sub-channel to be accessed.
In a second aspect, a method for a terminal to access a base station is provided, and the method may include:
receiving a first energy efficiency of a sub-channel to be accessed sent by each base station to be accessed in a plurality of base stations to be accessed;
and comparing the received first energy efficiency of the plurality of sub-channels to be accessed, and selecting the base station to which the sub-channel to be accessed with the maximum first energy efficiency belongs as the accessed target base station.
In a third aspect, an access apparatus is provided, which may include: the device comprises a first acquisition module, an acquisition module, a determination module, a second acquisition module, a prediction module and a sending module;
the first acquisition module is used for acquiring the gain of the terminal on each sub-channel on the base station to be accessed;
a priority list obtaining module, configured to obtain a subchannel priority list of the terminal based on a gain of the terminal on each subchannel on the base station to be accessed, where the higher the gain, the higher the priority;
a first determining module, configured to determine a sub-channel to be accessed by the terminal according to a priority order of each sub-channel in a sub-channel priority list;
the second acquisition module is used for acquiring the number of currently accessed devices in the sub-channel to be accessed;
the prediction module is used for predicting the first energy efficiency of the sub-channel to be accessed after the terminal accesses the sub-channel to be accessed when the acquired number of the devices is not more than a first preset number threshold corresponding to the sub-channel to be accessed;
and the sending module is used for sending the first energy efficiency to the terminal and determining whether to access the base station to be accessed according to the first energy efficiency by the terminal.
In an optional example, the second determining module is configured to determine, as the second energy efficiency, the current energy efficiency of the sub-channel to be accessed when the obtained number of the devices is smaller than a second preset number threshold and larger than a first preset number threshold, where the second preset number threshold is larger than the first preset number threshold; when the obtained equipment number is smaller than a second preset number threshold and larger than a first preset number threshold, predicting first energy efficiency of a sub-channel to be accessed after the terminal accesses the sub-channel to be accessed;
and when the first energy efficiency is greater than the second energy efficiency, triggering the sending module.
In an optional example, the sending module is further configured to cancel sending the first energy efficiency to the terminal when the obtained number of devices is not less than a second preset number threshold.
In an optional example, the first obtaining module is specifically configured to determine, based on a channel estimation algorithm, a gain of the terminal on each subchannel on the base station to be accessed.
In an optional example, the prediction module is specifically configured to predict, using a shannon formula and a power allocation algorithm, a data transmission rate on a sub-channel to be accessed after the terminal accesses the sub-channel to be accessed, and predict, using the power allocation algorithm, a data transmission power on the sub-channel to be accessed after the terminal accesses the sub-channel to be accessed; and determining the ratio of the data transmission rate on the sub-channel to be accessed to the data transmission power on the sub-channel to be accessed as the first energy efficiency of the sub-channel to be accessed after the terminal predicts the sub-channel to be accessed.
In a fourth aspect, another access apparatus is provided, which may include: the device comprises a receiving module and a selecting module;
the receiving module is used for receiving first energy efficiency of a sub-channel to be accessed, which is sent by each base station to be accessed in a plurality of base stations to be accessed;
and the selection module is used for comparing the first energy efficiency of the received multiple sub-channels to be accessed and selecting the base station to which the sub-channel to be accessed with the maximum first energy efficiency belongs as the accessed target base station.
In a fifth aspect, an electronic device is provided, which may include a processor, a communication interface, a memory, and a communication bus, where the processor, the communication interface, and the memory complete communication with each other through the communication bus;
a memory for storing a computer program;
a processor for implementing the method steps of any of the first aspect when executing a program stored in the memory.
In a sixth aspect, another electronic device is provided, which may include a processor, a communication interface, a memory, and a communication bus, where the processor, the communication interface, and the memory complete communication with each other through the communication bus;
a memory for storing a computer program;
a processor for implementing the method steps of the second aspect when executing the program stored in the memory.
The embodiment of the invention provides a method and a device for accessing a terminal to a base station and electronic equipment. The base station to be accessed can obtain a sub-channel priority list of the terminal through the gain of the terminal on each sub-channel on the base station to be accessed, and obtain the number of devices accessed in the sub-channel to be accessed, which is selected by the terminal according to the sequence of sub-channel identifiers in the sub-channel priority list; when the number of the obtained current access devices is smaller than a preset first device threshold value of the sub-channel to be accessed, obtaining a first energy efficiency of the sub-channel to be accessed after the terminal is accessed, and then sending the first energy efficiency to the terminal. And when the terminal traverses a plurality of base stations to be accessed, selecting the base station to be accessed corresponding to the maximum first energy efficiency from the acquired first energy efficiencies of the plurality of sub-channels to be accessed as the target access base station. The method can improve the energy efficiency of the terminal and the base station in the uplink communication process because the terminal and the base station both select the maximum first energy efficiency. Of course, it is not necessary for any product or method of practicing the invention to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a system framework diagram of an embodiment of the present invention;
fig. 2 is a flowchart illustrating a method for a terminal to access a base station according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating another method for a terminal to access a base station according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an access device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another access device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another electronic device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The method for accessing the terminal to the base station provided by the embodiment of the invention is applied to a scene of accessing a non-orthogonal access mode to a heterogeneous network. The heterogeneous network is a multi-element network composed of multiple wireless access points, such as macro base stations, micro base stations, home base stations and relay nodes. The non-orthogonal multiple access mode is that a terminal adopts a non-orthogonal mode to send data to a base station, interference information is actively introduced, and the base station realizes correct demodulation through serial interference deletion. The sub-channels of the base station are orthogonal and do not interfere with each other, a plurality of terminals can be accessed to one sub-channel, and non-orthogonal transmission is carried out between different terminals on the same sub-channel.
The method for accessing the base station by the terminal provided by the embodiment of the invention can be applied to the communication system shown in fig. 1. As shown in fig. 1, the system may include at least one base station, such as base station 1, base station 2, base station 3, and at least one terminal, such as terminal 1, terminal 2, and terminal 3. The terminal may be a User Equipment (UE), a handheld device with wireless communication function, a vehicle-mounted device, a wearable device, a computing device or other processing device connected to a wireless modem, a Mobile Station (MS), or the like.
The process of accessing the base station by the terminal is essentially the process of accessing the sub-channels of the base station by the terminal. Before a terminal is accessed to a base station in a heterogeneous network, the terminal and the base station need to be subjected to bidirectional matching, namely, the terminal selects a sub-channel according to the gain of the sub-channel in the base station, and the sub-channel of the base station predicts the influence of the added terminal on the energy efficiency of the terminal to select whether the terminal is allowed to be added or not. The bidirectional matching process of the user and the base station is a process of matching one base station based on a plurality of terminals. In this matching process, multiple terminals may simultaneously select subchannels of the same base station, while each terminal may only select a subchannel served by one base station.
Taking the base station selected by the terminal 1 for access as an example, each of the base stations 1, 2 and 3 acquires, for the terminal 1, a gain of each sub-channel of the terminal 1 on the base station, determines a sub-channel to be accessed of the base station of the terminal 1 based on the acquired gain, and when the number of currently accessed devices in the sub-channel to be accessed is not greater than a first preset number threshold, predicts a first energy efficiency of the sub-channel to be accessed after the terminal 1 accesses the sub-channel to be accessed, and sends the first energy efficiency to the terminal 1, and the terminal 1 selects a target base station to be accessed based on the first energy efficiencies respectively received from the base stations 1, 2 and 3, for example, selects a base station to which the sub-channel to be accessed with the largest first energy efficiency belongs as the target base station to be accessed. The first preset number threshold is the minimum number of devices to be accessed to the sub-channel.
Therefore, the embodiment of the invention selects the base station to which the subchannel with the maximum energy efficiency belongs to access through the terminal, thereby improving the energy efficiency of the uplink communication between the base station and the terminal.
Fig. 2 is a flowchart illustrating a method for a terminal to access a base station according to an embodiment of the present invention. As shown in fig. 2, an execution subject of the method may be a base station to be accessed, and the method may include:
and step 210, acquiring the gain of the terminal on each subchannel on the base station to be accessed.
And the plurality of base stations to be accessed broadcast and transmit the reference signals to the plurality of terminals through each respective sub-channel. And after the terminal receives the reference signal, sending a response signal to the corresponding base station to be accessed. And calculating the gain of each terminal on each sub-channel of the base station to be accessed based on a channel estimation algorithm.
Step 220, obtaining a subchannel priority list of the terminal based on the gain of the terminal on each subchannel on the base station to be accessed, wherein the larger the gain, the higher the priority.
And each base station to be accessed determines the priority of the terminal accessing each sub-channel according to the gain of the terminal on each sub-channel on the base station to be accessed, wherein the higher the gain is, the higher the priority is, and thus a sub-channel priority list of each terminal is obtained. E.g. a plurality ofThe set of priority lists of the terminal in the base station f to be accessed can be expressed as
Wherein pf (k)f) Priority list for each subchannel indicating terminal k is on base station f, if terminal k is on subchannel SC in base station fnThe channel gain on is higher than that on the sub-channel SCiThe gain of (3) is then denoted as SCn(k)＞SCi(k) I.e. mobile user k selects subchannel SC in base station fnHas higher priority than SCi。
The subchannel priority list may include a priority number and a subchannel identification, as shown in table 1:
TABLE 1
| Priority order number | Sub-channel identification |
| 1 | Subchannel X |
| 2 | Subchannel Y |
| 3 | Subchannel Z |
As can be seen from table 1, the base station to be accessed includes three sub-channels, and the sub-channel identifiers are sub-channel X, sub-channel Y, and sub-channel Z, respectively. Since the gain of subchannel X corresponding to priority number 1 is the largest, the gain of subchannel Y corresponding to priority number 2 is the next largest, and the gain of subchannel Z corresponding to priority number 3 is the smallest, the priority of subchannel X is greater than the priority of subchannel Y, and the priority of subchannel Y is greater than the priority of subchannel Z.
Step 230, determining the sub-channels to be accessed of the terminal according to the priority order of each sub-channel in the sub-channel priority list.
And the base station to be accessed selects the sub-channels to be accessed according to the priority of each sub-channel in the sub-channel priority list of the terminal from high to low.
And step 240, acquiring the number of the currently accessed devices in the sub-channel to be accessed.
And step 250, predicting the first energy efficiency of the sub-channel to be accessed after the terminal accesses the sub-channel to be accessed when the obtained number of the devices is not more than the first preset number threshold corresponding to the sub-channel to be accessed.
The non-orthogonal access mode allows a plurality of terminals to simultaneously access the same sub-channel, and a first preset quantity threshold q is specified in advance for each sub-channel of the base station to be accessed in consideration of the complexity of serial interference elimination of the non-orthogonal multiple access at the side of the base station to be accessedlA first predetermined number threshold qllThe minimum number of devices on the sub-channel to be accessed.
When the obtained number of the devices is not more than a first preset number threshold q of the sub-channels to be accessedlAnd then, predicting the first energy efficiency of the sub-channel to be accessed after the terminal accesses the sub-channel to be accessed.
The base station to be accessed can predict the data transmission rate on the sub-channel to be accessed after the terminal is accessed to the sub-channel to be accessed by using a Shannon formula and a power distribution algorithm, predict the data transmission power on the sub-channel to be accessed after the terminal is accessed to the sub-channel to be accessed by using the power distribution algorithm, and predict the first energy efficiency of the sub-channel to be accessed after the terminal is accessed to the sub-channel to be accessed.
Specifically, the ratio of the data transmission rate on the sub-channel to be accessed to the data transmission power on the sub-channel to be accessed is determined as the first energy efficiency of the sub-channel to be accessed after the terminal is accessed to the sub-channel to be accessed. Taking the sum of the data transmission rates of all terminals accessed in the sub-channel to be accessed as the data transmission rate on the sub-channel; and taking the sum of the data transmission power of all the terminals accessed in the sub-channel to be accessed as the data transmission rate on the sub-channel.
The calculation process of predicting the first energy efficiency of the to-be-accessed sub-channel after the terminal accesses the to-be-accessed sub-channel may be as follows:
terminal selects f sub-channel of base station to be accessed
Has an energy efficiency of EEfn*＝Rfn'(Pfn')/pfn'(Pfn'). Due to SCn'The upper energy efficiency is defined as the fractional form, which is first converted to a subtractive form with the original ratio, Rfn'(Pfn')-ηpfn'(Pfn'). Therein, EEfn*＝η，Rfn'(Pfn') For a sub-channel
Sum of rates of (A) and (B), pfn'(Pfn') For a sub-channel
The sum of the powers of (a) and (b).
Q (eta, P) for presettingfn') Represents Rfn'(Pfn')-ηpfn'(Pfn') The difference of (d) is expressed by the expression (Q, P)fn') Is a monotonically decreasing function with respect to η, and thus, Q (η, P) is obtainedfn') The maximum value of (2) is 0. By setting the maximum number of iterations TmaxAnd the minimum tolerance error mu, solving eta by using an iterative algorithm until the t-1 time
At this time, the optimum value eta of the energy efficiency is returned*＝η(t-1)The optimum value η of the energy efficiency to be obtained*As a subchannel
A first energy efficiency.
Further, the above iterative method can also solve
Power allocation problem of upper terminal.
Solving for mu in the t-th iteration(t)When needed, to the optimal power
And (6) solving. By proving
Velocity of
For the concave function, the optimization problem of the maximum value will be solved
Converting the difference into a form for solving the minimum value of the subtraction of the two concave functions, and finally carrying out iteration to obtain the optimal power by using a differential optimization algorithm
The specific solving process of the embodiment of the present invention is not described herein.
Optionally, when the number of the acquired devices is greater than a first preset number threshold q of the sub-channels to be accessedlAnd when the terminal is not accessed to the sub-channel to be accessed, the terminal is refused to access to the sub-channel to be accessed.
And step 260, sending the first energy efficiency to the terminal, so that the terminal determines whether to access the base station to be accessed according to the first energy efficiency.
The base station to be accessed sends the first energy efficiency to the terminal. The terminal may receive a first energy efficiency of a sub-channel to be accessed transmitted by each base station to be accessed in a plurality of base stations to be accessed.
And the terminal compares the received first energy efficiency of the plurality of sub-channels to be accessed, and selects the base station to which the sub-channel to be accessed with the maximum first energy efficiency belongs as the accessed target base station.
Need to make sure thatIt is noted that, in addition to the above-mentioned scheme, step 250 may also specify a device number range in advance for each sub-channel of the base station to be accessed, where the device number range includes the first preset number threshold qlAnd a second predetermined number threshold qu. Wherein the first preset number threshold qlThe minimum equipment number of the equipment on the subchannel to be accessed is obtained; second predetermined number threshold quIs the maximum number of devices on the sub-channel to be accessed.
When the obtained equipment number is less than a second preset number threshold quAnd is greater than a first predetermined number threshold qlAnd determining the current energy efficiency of the sub-channel to be accessed as the second energy efficiency, and predicting the first energy efficiency of the sub-channel to be accessed after the terminal accesses the sub-channel to be accessed by using the prediction method.
Judging the magnitude of the first energy efficiency and the second energy efficiency;
when the first energy efficiency is greater than the second energy efficiency, step 260 is performed to transmit the first energy efficiency to the terminal.
And when the number of the acquired devices is not less than the second preset number threshold, canceling to send the first energy efficiency to the terminal, returning to the step 230, and selecting a next sub-channel of the current sub-channel to be accessed in the sub-channel priority list as a new sub-channel to be accessed.
The following describes a single terminal accessing multiple base stations to be accessed in detail.
Fig. 3 is a flowchart illustrating another method for a terminal to access a base station according to an embodiment of the present invention. As shown in fig. 3, the method may include:
step 301, initializing the base station to be accessed.
And the base station to be accessed initializes the number of the accessed devices on each sub-channel and the current energy efficiency of each sub-channel.
Step 302, the base station to be accessed acquires the gain of the terminal on each sub-channel of the base station to be accessed.
And the base station to be accessed determines the gain of the terminal on each sub-channel on the base station to be accessed based on a channel estimation algorithm.
Step 303, the base station to be accessed obtains the subchannel priority list of the terminal, wherein the higher the gain, the higher the priority.
And step 304, the base station to be accessed determines the sub-channel to be accessed of the terminal according to the sub-channel priority list.
And selecting the current sub-channel to be accessed by the terminal according to the sequence of the sub-channel priority from high to low in the sub-channel priority list.
It can be understood that, if the current sub-channel to be accessed by the terminal rejects the access of the terminal, the next sub-channel of the current sub-channel to be accessed in the sub-channel priority list is selected as the new sub-channel to be accessed.
Step 305, the base station to be accessed judges whether the number of the devices currently accessed by the sub-channel to be accessed is less than a first preset number threshold qlIf yes, go to step 306, otherwise go to step 307.
Step 306, the to-be-accessed base station predicts the first energy efficiency of the to-be-accessed sub-channel after the terminal accesses the to-be-accessed sub-channel, and then step 309 is executed.
Step 307, the base station to be accessed judges whether the number of the devices currently accessed by the sub-channel to be accessed is in a second preset number threshold quAnd a first predetermined number threshold qlOtherwise, if yes, go to step 308, otherwise, go back to step 304.
308, the to-be-accessed base station predicts the first energy efficiency of the to-be-accessed sub-channel after the terminal is accessed to the to-be-accessed sub-channel, judges whether the current energy efficiency of the to-be-accessed sub-channel is less than the first energy efficiency, if so, executes step 309; if not, go back to step 304.
Step 309, the base station to be accessed sends the first energy efficiency to the terminal.
And the terminal records the first energy efficiency sent by each base station to be accessed, compares the first energy efficiency and selects the base station to which the sub-channel to be accessed with the maximum first energy efficiency belongs as the accessed target base station.
The base station to be accessed obtains a subchannel priority list of the terminal by obtaining the gain of the terminal on each subchannel on the base station to be accessed, the higher the gain is, the higher the priority is, and then the subchannels to be accessed of the terminal are determined according to the priority sequence of each subchannel in the subchannel priority list; acquiring the number of currently accessed devices in a sub-channel to be accessed; and when the obtained equipment number is not more than a first preset number threshold corresponding to the sub-channel to be accessed, predicting first energy efficiency of the sub-channel to be accessed after the terminal is accessed to the sub-channel to be accessed, and sending the first energy efficiency to the terminal, wherein the first energy efficiency is used for determining whether to access the base station to be accessed according to the first energy efficiency by the terminal so as to improve the energy efficiency in the uplink communication process of the terminal and the base station.
Corresponding to the method, the embodiment of the invention provides an access device.
Fig. 4 is a schematic structural diagram of an access device according to an embodiment of the present invention. As shown in fig. 4, the apparatus may include: a first obtaining module 410, a priority list obtaining module 420, a first determining module 430, a second obtaining module 440, a predicting module 450, and a sending module 460.
The first obtaining module 410 is configured to obtain a gain of the terminal on each sub-channel of the base station to be accessed;
a priority list obtaining module 420, configured to obtain a subchannel priority list of a terminal based on a gain of the terminal on each subchannel on a base station to be accessed, where the higher the gain is, the higher the priority is;
a first determining module 430, configured to determine a sub-channel to be accessed by the terminal according to a priority order of each sub-channel in the sub-channel priority list;
a second obtaining module 440, configured to obtain the number of currently accessed devices in the sub-channel to be accessed;
the predicting module 450 is configured to predict a first energy efficiency of the sub-channel to be accessed after the terminal accesses the sub-channel to be accessed when the obtained number of the devices is not greater than a first preset number threshold corresponding to the sub-channel to be accessed;
a sending module 460, configured to send the first energy efficiency to the terminal, where the terminal determines whether to access the base station to be accessed according to the first energy efficiency.
Optionally, the apparatus may further comprise a second determining module 470. A second determining module 470, configured to determine, as a second energy efficiency, the current energy efficiency of the sub-channel to be accessed when the obtained number of the devices is smaller than a second preset number threshold and larger than the first preset number threshold, where the second preset number threshold is larger than the first preset number threshold;
when the obtained equipment number is smaller than a second preset number threshold and larger than a first preset number threshold, predicting first energy efficiency of the sub-channel to be accessed after the terminal accesses the sub-channel to be accessed;
the transmitting module 460 is triggered when the first energy efficiency is greater than the second energy efficiency.
Optionally, the sending module 460 is further configured to cancel sending the first energy efficiency to the terminal when the obtained number of devices is not less than the second preset number threshold.
Optionally, the first obtaining module 410 is specifically configured to determine, based on a channel estimation algorithm, a gain of the terminal on each sub-channel of the base station to be accessed.
Optionally, the predicting module 450 is specifically configured to predict, by using a shannon formula and a power allocation algorithm, a data transmission rate on the sub-channel to be accessed after the terminal accesses the sub-channel to be accessed, and predict, by using the power allocation algorithm, a data transmission power on the sub-channel to be accessed after the terminal accesses the sub-channel to be accessed;
and determining the ratio of the data transmission rate on the sub-channel to be accessed to the data transmission power on the sub-channel to be accessed as the first energy efficiency of the sub-channel to be accessed after the terminal is accessed to the sub-channel to be accessed.
The functions of the functional modules of the access device provided in the above embodiments of the present invention can be implemented by the above method steps, and therefore, the specific working process and beneficial effects of the modules in the access device provided in the embodiments of the present invention are provided. And will not be described herein.
Corresponding to the method, the embodiment of the invention provides another access device.
Fig. 5 is a schematic structural diagram of another access device according to an embodiment of the present invention. As shown in fig. 5, the apparatus may include: a receiving module 510 and a selecting module 520;
a receiving module 510, configured to receive a first energy efficiency of a sub-channel to be accessed, sent by each base station to be accessed in a plurality of base stations to be accessed;
a selecting module 520, configured to compare the first energy efficiencies of the received multiple sub-channels to be accessed, and select the base station to which the sub-channel to be accessed with the largest first energy efficiency belongs as the accessed target base station.
The functions of the functional modules of the access device provided in the above embodiments of the present invention can be implemented by the above method steps, and therefore, the specific working process and beneficial effects of the modules in the access device provided in the embodiments of the present invention are provided. And will not be described herein.
An embodiment of the present invention further provides an electronic device, as shown in fig. 6, which includes a processor 610, a communication interface 620, a memory 630 and a communication bus 640, where the processor 610, the communication interface 620, and the memory 630 complete mutual communication through the communication bus 640,
a memory 630 for storing computer programs;
the processor 610, when executing the program stored in the memory 630, implements the following steps:
acquiring the gain of a terminal on each sub-channel of a base station to be accessed;
obtaining a subchannel priority list of a terminal based on the gain of the terminal on each subchannel on a base station to be accessed, wherein the higher the gain is, the higher the priority is;
determining a sub-channel to be accessed of the terminal according to the priority sequence of each sub-channel in the sub-channel priority list;
acquiring the number of currently accessed devices in a sub-channel to be accessed;
when the obtained number of the devices is not larger than a first preset number threshold corresponding to the sub-channel to be accessed, predicting first energy efficiency of the sub-channel to be accessed after the terminal is accessed to the sub-channel to be accessed;
and sending the first energy efficiency to the terminal, wherein the terminal determines whether to access the base station to be accessed according to the first energy efficiency.
Optionally, the method further includes determining, when the obtained number of devices is smaller than a second preset number threshold and larger than the first preset number threshold, a current energy efficiency of the sub-channel to be accessed as a second energy efficiency, where the second preset number threshold is larger than the first preset number threshold;
when the obtained equipment number is smaller than a second preset number threshold and larger than a first preset number threshold, predicting first energy efficiency of the sub-channel to be accessed after the terminal accesses the sub-channel to be accessed;
and when the first energy efficiency is greater than the second energy efficiency, performing the step of transmitting the first energy efficiency to the terminal.
Optionally, the method further comprises: and when the acquired number of the devices is not less than a second preset number threshold, stopping sending the first energy efficiency to the terminal.
Optionally, the obtaining the gain of each sub-channel of the terminal on the base station to be accessed includes: and determining the gain of each subchannel of the terminal on the base station to be accessed based on a channel estimation algorithm.
Optionally, predicting a first energy efficiency of the to-be-accessed sub-channel after the terminal accesses the to-be-accessed sub-channel includes:
predicting the data transmission rate on the sub-channel to be accessed after the terminal is accessed to the sub-channel to be accessed by using a Shannon formula and a power distribution algorithm, and predicting the data transmission power on the sub-channel to be accessed after the terminal is accessed to the sub-channel to be accessed by using the power distribution algorithm;
and determining the ratio of the data transmission rate on the sub-channel to be accessed to the data transmission power on the sub-channel to be accessed as the first energy efficiency of the sub-channel to be accessed after the terminal is accessed to the sub-channel to be accessed.
An embodiment of the present invention further provides an electronic device, as shown in fig. 7, including a processor 710, a communication interface 720, a memory 730, and a communication bus 740, where the processor 710, the communication interface 720, and the memory 730 complete mutual communication through the communication bus 740,
a memory 730 for storing a computer program;
the processor 710, when executing the program stored in the memory 730, implements the following steps:
receiving a first energy efficiency of a sub-channel to be accessed sent by each base station to be accessed in a plurality of base stations to be accessed;
and comparing the received first energy efficiency of the plurality of sub-channels to be accessed, and selecting the base station to which the sub-channel to be accessed with the maximum first energy efficiency belongs as the accessed target base station.
The processor obtains a subchannel priority list of the terminal by obtaining the gain of the terminal on each subchannel on the base station to be accessed, wherein the higher the gain is, the higher the priority is, and then the subchannel to be accessed of the terminal is determined according to the priority sequence of each subchannel in the subchannel priority list; acquiring the number of currently accessed devices in a sub-channel to be accessed; and when the obtained equipment number is not more than a first preset number threshold corresponding to the sub-channel to be accessed, predicting first energy efficiency of the sub-channel to be accessed after the terminal is accessed to the sub-channel to be accessed, and sending the first energy efficiency to the terminal, wherein the first energy efficiency is used for determining whether to access the base station to be accessed according to the first energy efficiency by the terminal so as to improve the energy efficiency in the uplink communication process of the terminal and the base station.
The processors illustrated in fig. 6 and 7 may be general-purpose processors including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but also Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the embodiments of the apparatus, the electronic device, the computer-readable storage medium, and the computer program product, since they are substantially similar to the method embodiments, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the method embodiments.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. A method for a terminal to access a base station, the method comprising:
acquiring the gain of a terminal on each sub-channel of a base station to be accessed;
obtaining a subchannel priority list of the terminal based on the gain of the terminal on each subchannel on the base station to be accessed, wherein the larger the gain is, the higher the priority is;
determining the sub-channels to be accessed of the terminal according to the priority sequence of each sub-channel in the sub-channel priority list;
acquiring the number of currently accessed devices in the sub-channel to be accessed;
when the obtained number of the devices is not larger than a first preset number threshold corresponding to the sub-channel to be accessed, predicting first energy efficiency of the sub-channel to be accessed after the terminal is accessed to the sub-channel to be accessed;
the first energy efficiency is sent to the terminal, and the terminal determines whether to access the base station to be accessed according to the first energy efficiency;
when the obtained number of the devices is smaller than a second preset number threshold and larger than the first preset number threshold, determining the current energy efficiency of the sub-channel to be accessed as a second energy efficiency, wherein the second preset number threshold is larger than the first preset number threshold;
when the obtained number of the devices is smaller than the second preset number threshold and larger than the first preset number threshold, predicting first energy efficiency of the sub-channel to be accessed after the terminal accesses the sub-channel to be accessed;
when the first energy efficiency is greater than the second energy efficiency, performing the step of transmitting the first energy efficiency to the terminal.
2. The method of claim 1, further comprising:
and when the obtained number of the devices is not less than the second preset number threshold, canceling the sending of the first energy efficiency to the terminal.
3. The method of claim 1, wherein the obtaining the gain of the terminal on each subchannel on the base station to be accessed comprises:
and determining the gain of each sub-channel of the terminal on the base station to be accessed based on a channel estimation algorithm.
4. The method of claim 1, wherein predicting the first energy efficiency of the sub-channel to be accessed after the terminal accesses the sub-channel to be accessed comprises:
predicting the data transmission rate on the sub-channel to be accessed after the terminal is accessed to the sub-channel to be accessed by using a Shannon formula and a power distribution algorithm, and predicting the data transmission power on the sub-channel to be accessed after the terminal is accessed to the sub-channel to be accessed by using the power distribution algorithm;
and determining the ratio of the data transmission rate on the sub-channel to be accessed to the data transmission power on the sub-channel to be accessed as a first energy efficiency of the sub-channel to be accessed after the terminal is accessed to the sub-channel to be accessed.
5. A method for a terminal to access a base station, the method comprising:
receiving a first energy efficiency of a sub-channel to be accessed sent by each base station to be accessed in a plurality of base stations to be accessed; the base station to be accessed is a base station for executing the method of claim 1;
and comparing the received first energy efficiency of the plurality of sub-channels to be accessed, and selecting the base station to which the sub-channel to be accessed with the maximum first energy efficiency belongs as the accessed target base station.
6. An access device, the device comprising: the device comprises a first acquisition module, a priority list acquisition module, a first determination module, a second acquisition module, a prediction module, a sending module and a second determination module;
the first obtaining module is used for obtaining the gain of the terminal on each sub-channel on the base station to be accessed;
the priority list obtaining module is configured to obtain a subchannel priority list of the terminal based on a gain of each subchannel of the terminal on the base station to be accessed, where a higher gain is and a higher priority is;
the first determining module is configured to determine a sub-channel to be accessed by the terminal according to a priority order of each sub-channel in the sub-channel priority list;
the second obtaining module is configured to obtain the number of currently accessed devices in the sub-channel to be accessed;
the prediction module is configured to predict a first energy efficiency of the sub-channel to be accessed after the terminal accesses the sub-channel to be accessed when the obtained number of the devices is not greater than a first preset number threshold corresponding to the sub-channel to be accessed;
the sending module is configured to send the first energy efficiency to the terminal, and is configured to determine, by the terminal, whether to access the base station to be accessed according to the first energy efficiency;
the second determining module is configured to determine, as a second energy efficiency, a current energy efficiency of the sub-channel to be accessed when the obtained number of the devices is smaller than a second preset number threshold and larger than the first preset number threshold, where the second preset number threshold is larger than the first preset number threshold;
when the obtained number of the devices is smaller than the second preset number threshold and larger than the first preset number threshold, predicting first energy efficiency of the sub-channel to be accessed after the terminal accesses the sub-channel to be accessed;
triggering the transmitting module when the first energy efficiency is greater than the second energy efficiency.
7. An access device, the device comprising: the device comprises a receiving module and a selecting module;
the receiving module is used for receiving a first energy efficiency of a sub-channel to be accessed, which is sent by each base station to be accessed in a plurality of base stations to be accessed; the base station to be accessed is a base station for executing the method of claim 1;
the selection module is used for comparing the first energy efficiency of the received multiple sub-channels to be accessed, and selecting the base station to which the sub-channel to be accessed with the maximum first energy efficiency belongs as the accessed target base station.
8. An electronic device is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor and the communication interface are used for realizing mutual communication by the memory through the communication bus;
a memory for storing a computer program;
a processor for implementing the method steps of any of claims 1 to 4 when executing a program stored in the memory.
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