CN107148078B - User access control method and device for hybrid full-duplex and half-duplex network - Google Patents

User access control method and device for hybrid full-duplex and half-duplex network Download PDF

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CN107148078B
CN107148078B CN201710253304.2A CN201710253304A CN107148078B CN 107148078 B CN107148078 B CN 107148078B CN 201710253304 A CN201710253304 A CN 201710253304A CN 107148078 B CN107148078 B CN 107148078B
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user
users
duplex
downlink
uplink
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CN107148078A (en
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钟财军
陈璐
文鼎柱
余官定
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Zhejiang University ZJU
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/16—Half-duplex systems; Simplex/duplex switching; Transmission of break signals non-automatically inverting the direction of transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies

Abstract

The invention relates to a user access control method and device of a hybrid full-duplex and half-duplex network, belonging to the technical field of communication. The control method adds virtual users through an initialization step to configure the network so that the number of uplink and downlink users is equal to the number of channels; constructing a matrix of elements P of the sum of the transmit powers of the user pairs by a channel pre-allocation stepi,jObtaining a solution of an assignment problem taking the matrix as a utility matrix as a control parameter for configuring a user access network by taking the minimum total transmitting power as a target; removing the full-duplex user pairs which cannot be accessed through the feasibility checking step to obtain an idle channel; and selecting the user with the minimum power from the un-accessed real users through the channel re-allocation step to access the idle channel in a half-duplex mode. The control method not only has low operation complexity, but also can simultaneously optimize the access of network users and the total transmitting power.

Description

User access control method and device for hybrid full-duplex and half-duplex network
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a user access control method and a user access control device for a hybrid full-duplex half-duplex network.
Background
With the increase of wireless devices and the rapid development of wireless services, wireless networks are required to accommodate more mobile terminals and support higher data rate services in the future. In the case of limited spectrum resources, it is necessary to adopt a more spectrally efficient technique. The same-frequency simultaneous full duplex becomes a very potential technology with higher spectrum efficiency improving capability. Compared with the traditional time division duplex or frequency division duplex technology for carrying out uplink and downlink in two time slots or two channels, the full duplex technology can simultaneously carry out uplink and downlink in the same frequency band, namely, the frequency spectrum efficiency is doubled. Therefore, the full-duplex technology becomes one of the key technologies of the fifth generation mobile communication system (5G).
However, the full-duplex technology has a self-interference problem, and although the latest self-interference cancellation technology can reduce the self-interference to-110 dB, so that the self-interference cancellation technology can be applied in reality, and can accommodate more users under the condition of limited channel resources, the performance of the self-interference cancellation technology is inferior to that of a half-duplex network, so that a hybrid full-duplex half-duplex network capable of simultaneously starting a full-duplex mode and a half-duplex mode becomes a best choice capable of simultaneously considering the number of access users and the network performance, but in such a mode, simultaneous optimization of user access and power control is difficult to achieve.
Disclosure of Invention
The invention aims to provide a user access control method of a hybrid full-duplex half-duplex network, which is used for simultaneously optimizing the user access and the total transmitting power of the network;
another object of the present invention is to provide a subscriber access control device of a hybrid full-duplex half-duplex network to optimize both subscriber access and total transmit power of the network.
In order to achieve the above object, the user access control method provided by the present invention comprises an initialization step, a channel pre-allocation step, a feasibility checking step and a channel re-allocation step; the initialization step comprises the steps of adding (N-K) virtual uplink users and (N-M) virtual downlink users in a network with N channels, K real uplink users and M real downlink users; the channel pre-allocation step includes constructing an N matrix Pi,j}，Pi,jIs the sum of the transmission power of a pair of users (i, j), if the pair of real users does not satisfy the QoS restriction condition, P isi,jIs equal to a constant L1，L1More than two real users form the sum of maximum transmitting power of full duplex time-setting, if the real users and the virtual users form the full duplex time-setting, then Pi,jFor half-duplex power of real users, if two virtual users form a full-duplex pair, Pi,jIs equal to a constant L2，L2The sum of the maximum transmitting power of the full duplex time synchronization formed by more than two real users is obtained by taking the minimum total transmitting power as a target to obtain a matrix { P }i,jIs utilityThe solution of the assignment problem of the matrix is used as a control parameter to configure user access; the feasibility checking step comprises the steps of eliminating a full-duplex user pair where a user is located to acquire an idle channel if the user cannot access the system; the channel re-allocation step comprises the step of selecting n users with the minimum power from the un-accessed real users to access in a half duplex mode, wherein n is the number of empty channels.
Constructing a matrix { P) by adding virtual uplink users and virtual downlink users and taking the sum of the transmission power of the users as an elementi,jAnd converting the problem that the minimum transmitting power solution is selected on the basis of maximizing the number of the access users, which is required to be performed step by step, into a single-step minimum power problem and a standard assignment problem which can be solved by using a K-M algorithm, so that the user access and the total transmitting power of the network can be optimized simultaneously while the operation complexity is greatly reduced.
The specific scheme is L2＞L1When the channel is insufficient, the channel is preferentially allocated to a full-duplex pair formed by two real users, rather than a full-duplex pair formed by two virtual users.
Another specific scheme is that the QoS restriction condition is
Figure BDA0001272658040000031
Figure BDA0001272658040000032
Wherein the content of the first and second substances,
Figure BDA0001272658040000033
is the minimum data rate requirement for the uplink user,
Figure BDA0001272658040000034
is the minimum data rate requirement for the downlink user,
Figure BDA0001272658040000035
for the rate of the upstream user to be,for downstream usersA is the outage probability.
More specifically, if one pair of real users is not satisfiedThen P isi,j＝L1Wherein η is a self-interference cancellation coefficient,
Figure BDA0001272658040000038
for the average channel power gain of the uplink users,
Figure BDA0001272658040000039
the average channel power gain for the downlink user,
Figure BDA00012726580400000310
the average channel power gain between the uplink user and the downlink user. The problem that two real users cannot be paired due to inappropriate distance is effectively avoided, and more users can be accessed.
More particularly, the sum of the powers of a pair of real users forming a full duplex pair
Figure BDA00012726580400000311
Figure BDA00012726580400000312
Figure BDA00012726580400000313
Wherein the content of the first and second substances,
Figure BDA00012726580400000314
in order to be the noise power of the uplink,
Figure BDA00012726580400000315
is the noise power of the downlink. And in the feasible region, selecting the sum of the minimum transmitting power to construct a matrix element, and further optimizing the transmitting power.
Another specific approach is to use the K-M algorithm to obtain an optimal solution set of standard assignment problems.
The preferable scheme is that when the base station is in the full duplex mode, the rate of the uplink user is
Figure BDA00012726580400000316
Downstream user
Figure BDA00012726580400000317
At a rate of
Figure BDA00012726580400000318
Wherein the content of the first and second substances,
Figure BDA0001272658040000041
for the transmission power when the uplink user is matched with the downlink user,
Figure BDA0001272658040000042
the transmission power when the downlink user and the uplink user are matched,in order to be the noise power of the uplink,for the purpose of the noise power of the downlink,
Figure BDA0001272658040000049
for the channel gain of the uplink user,
Figure BDA0001272658040000045
channel gain, h, for downlink usersi,jIs the gain of the interference channel between the uplink user and the downlink user, η is the self-interference elimination coefficient, when the base station is in half-duplex mode, the rate of the uplink user is
Figure BDA0001272658040000046
The rate of the downlink user is
Figure BDA0001272658040000047
Pi UFor the transmit power of the uplink user,
Figure BDA0001272658040000048
is the transmission power of the downlink user.
Another more preferable scheme is that the method comprises a pre-judging step: and if the M + K is less than or equal to N, accessing the real uplink user and the real downlink user in a half-duplex mode, otherwise, performing an initialization step.
In order to achieve the above another object, the present invention provides a user access control device, which comprises an initialization unit, a channel pre-allocation unit, a feasibility checking unit, and a channel re-allocation unit; the initialization unit is used for adding (N-K) virtual uplink users and (N-M) virtual downlink users in a network with N channels, K real uplink users and M real downlink users; the channel pre-allocation unit is used for constructing an N multiplied by N matrix { Pi,j}，Pi,jIs the sum of the transmission power of a pair of users (i, j), if the pair of real users does not satisfy the QoS restriction condition, P isi,jIs equal to a constant L1，L1More than two real users form the sum of maximum transmitting power of full duplex time-setting, if the real users and the virtual users form the full duplex time-setting, then Pi,jFor half-duplex power of real users, if two virtual users form a full-duplex pair, Pi,jIs equal to a constant L2，L2The sum of the maximum transmitting power of the full duplex time synchronization formed by more than two real users is obtained by taking the minimum total transmitting power as a target to obtain a matrix { P }i,jThe solution of the assignment problem of the utility matrix is used as a control parameter to configure the user access; the feasibility checking unit is used for eliminating the full-duplex user pair where the user is located and acquiring an idle channel if the user cannot access the system; the channel re-allocation unit is used for selecting n users with the minimum power from the real users which are not accessed to access in a half-duplex mode, wherein n is the number of empty channels.
Drawings
Fig. 1 is a communication diagram of a hybrid full-duplex and half-duplex hybrid network according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a method for controlling user access according to an embodiment of the present invention;
fig. 3 is a schematic communication diagram of a hybrid full-duplex half-duplex hybrid network after adding a virtual user according to an embodiment of the present invention;
FIG. 4 is a graph comparing the required transmission power of examples of the present invention with that of comparative examples;
fig. 5 is a block diagram of a user access control device according to an embodiment of the present invention.
Detailed Description
The invention will be further described with reference to the following examples and the accompanying drawings.
Examples
As shown in fig. 1, the base station 1 can start a full duplex mode and a half duplex mode, and users can only be in the half duplex mode due to hardware limitation, and in the communication network, K real uplink users are included
Figure BDA0001272658040000052
M real downlink users
Figure BDA0001272658040000053
And N channels, and max { K, M } is less than or equal to N.
According to the mode of the base station, the user has two different access modes:
1) uplink users when the base station is in full duplex modeAnd downstream users
Figure BDA0001272658040000055
Information is transmitted in the same channel, as shown in fig. 1, the uplink user 4 and the downlink user 5 form a full-duplex user pair, the base station 1 is subjected to self-interference, and the downlink user 5 is subjected to co-channel interference from the uplink user 4, and the reachable rates of the two are represented as:
Figure BDA0001272658040000051
Figure BDA0001272658040000061
wherein the content of the first and second substances,
Figure BDA0001272658040000062
and
Figure BDA0001272658040000063
separate uplink user
Figure BDA0001272658040000068
And downstream users
Figure BDA0001272658040000069
Of transmission power when matched, Pi UAnd
Figure BDA00012726580400000610
are respectively uplink usersAnd downstream usersThe transmit power of.
Figure BDA00012726580400000613
Andis an uplink user
Figure BDA00012726580400000615
And downstream users
Figure BDA00012726580400000616
Channel gain of hi,jIs an uplink user
Figure BDA00012726580400000617
And downstream users
Figure BDA00012726580400000618
The gain of the inter-interference channel, η is the self-interference cancellation coefficient,
Figure BDA00012726580400000619
in order to be the noise power of the uplink,
Figure BDA00012726580400000620
is the noise power of the downlink.
2) When the base station is in half-duplex mode, uplink user
Figure BDA00012726580400000621
And downstream users
Figure BDA00012726580400000622
Each monopolizing one channel for information transmission, as shown in fig. 1, an uplink user 3 and a downlink user 2 are both half-duplex users, and the uplink user
Figure BDA00012726580400000624
And downstream users
Figure BDA00012726580400000623
The achievable rate of (d) is expressed as:
Figure BDA0001272658040000064
Figure BDA0001272658040000065
selecting the channel as Rayleigh fading channel, then
Figure BDA00012726580400000625
And hi,jAll obey mean value of
Figure BDA00012726580400000626
And
Figure BDA00012726580400000627
is used as the index distribution of (1).
When the base station is in full duplex mode, a pair of uplink users
Figure BDA00012726580400000628
And downstream users
Figure BDA00012726580400000629
A certain QoS constraint must be satisfied, and the present embodiment selects the outage probability as the QoS criterion, that is:
Figure BDA0001272658040000066
Figure BDA0001272658040000067
wherein the content of the first and second substances,
Figure BDA00012726580400000630
andis an uplink user
Figure BDA00012726580400000632
And downstream users
Figure BDA00012726580400000633
A is the outage probability.
To satisfy the above QoS constraints, the transmit power domains of a pair of uplink and downlink users must satisfy:
and only if
Figure BDA0001272658040000072
Then there is a feasible power domain, at which time the optimum transmit power isAnd
Figure BDA0001272658040000074
expressed as:
Figure BDA0001272658040000075
as shown in fig. 2, the example of the hybrid full-duplex half-duplex network of the present embodiment includes a pre-determination step S1, an initialization step S2, an initial channel allocation step S3, a feasibility check step S4, and a re-channel allocation step S5.
A pre-judging step S1, if M + K is less than or equal to N, then K real uplink users and M real downlink users are accessed in a half-duplex mode, otherwise, an initializing step S2 is performed.
And initializing step S2, and adding (N-K) virtual uplink users and (N-M) virtual downlink users.
Originally containing K uplink usersM downlink users
Figure BDA0001272658040000077
On the basis of N-channel communication network, (N-K) virtual uplink users are added
Figure BDA0001272658040000078
And (N-M) virtual downlink users
Figure BDA0001272658040000079
To construct a network comprising N uplink users
Figure BDA00012726580400000710
N downlink users
Figure BDA00012726580400000711
A communication network of N channels.
Channel Pre-Allocation step S3, constructing N matrix { P × (N isi,jElement Pi,jThe communication network configured in the initialization step S2, which is the sum of the transmission powers of a pair of users (i, j), has the following different uplink and downlink matching modes to be considered:
1) for i is more than or equal to 1 and less than or equal to K and j is more than or equal to 1 and less than or equal to M, if a pair of user pairs does not meet the QoS constraint condition, P isi,j＝L1And L is1Greater than the sum of the maximum transmit powers of two real users forming a full duplex time-pair, i.e.
Figure BDA0001272658040000081
If the uplink user
Figure BDA0001272658040000086
And downstream users
Figure BDA0001272658040000087
A pair of full duplex pairs is formed, i.e. the uplink user 4 and the downlink user 5 as shown in fig. 3 form a pair of full duplex user pairs, the sum of the optimal transmission power is,
Figure BDA0001272658040000082
2) for i is more than or equal to 1 and less than or equal to K and M +1 and less than or equal to j and less than or equal to N, at the moment, the uplink userPairing with a virtual downlink user, then uplink user
Figure BDA0001272658040000089
In half-duplex mode, that is, as shown in fig. 3, the virtual downlink user 8 is paired with the uplink user 3, the uplink user 3 is in half-duplex mode, and the optimal transmission power of the uplink user is
Figure BDA0001272658040000083
3) For K +1 ≦ i ≦ N and 1 ≦ j ≦ M, then downlink is usedHousehold
Figure BDA00012726580400000810
Pairing with a virtual uplink user, then the downlink userIn half-duplex mode, that is, as shown in fig. 3, the virtual uplink user 7 is paired with the downlink user 2, the downlink user 2 is in half-duplex mode, and the optimal transmitting power of the downlink user is
Figure BDA0001272658040000084
4) For K +1 ≤ i ≤ N and M +1 ≤ j ≤ N, the virtual uplink user can not be paired with the virtual downlink user, and the sum of the transmission powers of the virtual-virtual user pairs is a large value L2E.g. L2More than two real users constitute the sum of the maximum transmit powers for a full duplex pair, i.e.,
Figure BDA0001272658040000085
in this embodiment L2＞L1。
Therefore, the problem that the minimum solution of the transmitting power is selected on the basis of the maximized number of the access users which are required to be performed step by step can be converted into the problem of the minimum power of a single step:
Figure BDA0001272658040000091
Figure BDA0001272658040000094
the problem mentioned above is the utility matrixIs { Pi,jThe standard assignment problem of.
The solution to the standard assignment problem, i.e. { ρ ] is obtained by the K-M algorithmi,jAnd scheduling user access with the solution as a control parameter, e.g., pi,j0, denotes that the user (i, j) is not paired, ρ i,j1 denotes the pairing access of the user (i, j).
And a feasibility checking step S4, which checks whether a user can not access the system, if so, the full-duplex user where the user is located is removed from the solution to acquire a free channel.
And a channel re-allocation step S5 of selecting n users with the minimum power from the un-accessed full-duplex pair of users to access the communication network in a half-duplex mode, where n is the number of empty channels.
Referring to fig. 5, the control apparatus 9 for user access of the hybrid full-duplex and half-duplex network of the present embodiment includes a pre-decision unit 91, an initialization unit 92, a channel pre-allocation unit 93, a feasibility checking unit 94, and a channel re-allocation unit 95.
The pre-decision unit 91 is configured to configure K real uplink users and M real downlink users to both access in a half-duplex mode when M + K is less than or equal to N.
The initialization unit 92 is configured to add (N-K) virtual uplink users and (N-M) virtual downlink users, where K is the number of real uplink users, M is the number of real downlink users, and N is the number of channels.
The channel pre-allocation unit 93 is used to construct an nxn matrix { P }i,j}，Pi,jIs the sum of the transmit powers of a pair of users (i, j); if a pair of real users does not satisfy the QoS restriction condition, Pi,jIs equal to a constant L1，L1The sum of the maximum transmitting power of the full duplex time synchronization formed by more than two real users; if the real user and the virtual user form a full duplex pair, Pi,jHalf duplex power for real users; if two virtual users form a full duplex pair, Pi,jIs equal to a constant L2，L2The sum of the maximum transmitting power of the full duplex time synchronization formed by more than two real users; aiming at the minimum total transmitting power, acquiring a matrix { P }i,jIs the assignment of utility matrixAnd solving the problem and configuring user access by taking the solution as a control parameter.
The feasibility checking unit 94 is configured to, when there is a user that cannot access, reject the full-duplex user pair where the user is located, and acquire an idle channel.
The channel re-allocation unit 95 is configured to select n users with the minimum power from among real users that are not accessed, and access the users in the half-duplex mode, where n is the number of empty channels.
In this embodiment, users are divided into real users and virtual users, and both the number of real uplink users and the number of real downlink users refer to the number of real users.
Performance analysis
In order to evaluate the performance of the present embodiment, to prove the performance superiority of the combined user access and power control scheme of the present embodiment, the present embodiment is compared with a random matching scheme, and the following full duplex/half duplex hybrid network is taken as an example in a technical scenario to describe:
the radius of the cell is 0.1km, the base station is positioned in the center of the cell, the number of uplink users and the number of downlink users are respectively 10, and the users are randomly distributed in the cell. The path loss between the user and the base station is 128.1+37.6log (d (km)); the path loss from user to user is 148+40log (d (km)). The lowest data rate of the uplink user and the downlink user is 2.0 bit/s/Hz.
Under the condition that the number of the access users is equal, the comparison result is shown in fig. 4:
(1) the performance of the algorithm 1 in this embodiment far exceeds that of the random matching scheme, and particularly, in the case of a small number of channels, the transmission power required by the algorithm 1 is far less than that required by the random matching scheme.
(2) The performance gap between algorithm 1 and the random matching scheme is smaller and smaller as the number of channels increases, and when the number of channels is 20, the required transmit power of the two is the same, and at this time, all users are in half-duplex mode, and the transmit power is also independent of the self-interference coefficient.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims (9)

1. A user access control method of a hybrid full-duplex and half-duplex network comprises the following steps:
an initialization step, when M + K is more than N and max { K, M } is less than or equal to N, increasing (N-K) virtual uplink users and (N-M) virtual downlink users, wherein K is the number of real uplink users, M is the number of real downlink users, and N is the number of channels;
channel pre-allocation step, constructing N multiplied by N matrix { Pi,j}，Pi,jIs the sum of the transmit powers of a pair of users (i, j); if a pair of real users does not satisfy the QoS restriction condition, Pi,jIs equal to a constant L1，L1The sum of the maximum transmitting power of the full duplex time synchronization formed by more than two real users; if the real user and the virtual user form a full duplex pair, Pi,jHalf duplex power for real users; if two virtual users form a full duplex pair, Pi,jIs equal to a constant L2，L2The sum of the maximum transmitting power of the full duplex time synchronization formed by more than two real users; aiming at the minimum total transmitting power, acquiring a matrix { P }i,jThe solution of the assignment problem of the utility matrix is used as a control parameter to configure the user access;
a feasibility checking step, wherein if a user can not access, a full-duplex user pair where the user is located is removed, and an idle channel is obtained;
a channel re-allocation step, namely selecting n users with the minimum power from the un-accessed real users to access in a half-duplex mode, wherein n is the number of empty channels;
the QoS limiting conditions are as follows:
Figure FDA0002231386510000011
Figure FDA0002231386510000012
wherein the content of the first and second substances,is the minimum data rate requirement for the uplink user,
Figure FDA0002231386510000014
is the minimum data rate requirement for the downlink user,
Figure FDA0002231386510000021
for the rate of the upstream user to be,for the rate of downlink users, a is the outage probability.
2. The user access control method of claim 1, wherein L is2＞L1。
3. The user access control method of claim 1, wherein:
if one pair of real users does not satisfy
Figure FDA0002231386510000023
Then P isi,j＝L1；
Where η is the self-interference cancellation coefficient,for the average channel power gain of the uplink users,
Figure FDA0002231386510000025
the average channel power gain for the downlink user,
Figure FDA0002231386510000026
the average channel power gain between the uplink user and the downlink user.
4. The user access control method of claim 3, wherein the sum of the powers of a full duplex pair of a pair of real users
Figure FDA0002231386510000027
Figure FDA0002231386510000029
Wherein the content of the first and second substances,
Figure FDA00022313865100000210
in order to be the noise power of the uplink,
Figure FDA00022313865100000211
is the noise power of the downlink.
5. The user access control method according to claim 1, wherein the obtaining is in a matrix { P }i,jThe step of assigning a solution to the problem for the utility matrix comprises:
a solution to the assignment problem is obtained using a K-M algorithm.
6. The user access control method according to any of claims 1 to 5, characterized by:
when the base station is in full duplex mode, the rate of the uplink user isThe rate of the downlink user is
Wherein the content of the first and second substances,
Figure FDA0002231386510000031
for the transmission power when the uplink user is matched with the downlink user,for the transmission power when the downlink user is matched with the uplink user,
Figure FDA0002231386510000033
in order to be the noise power of the uplink,
Figure FDA0002231386510000034
for the noise power of the downlink, hi UFor the channel gain of the uplink user,
Figure FDA0002231386510000035
channel gain, h, for downlink usersi,jIs the gain of the interference channel between the uplink user and the downlink user, and η is the self-interference cancellation coefficient;
when the base station is in half-duplex mode, the rate of the uplink user is
Figure FDA0002231386510000036
The rate of the downstream user's user is
Figure FDA0002231386510000037
Wherein, Pi UFor the transmit power of the uplink user,is the transmission power of the downlink user.
7. The user access control method according to any of claims 1 to 5, further comprising a pre-determining step of:
and if the M + K is less than or equal to N, accessing the real uplink user and the real downlink user in a half-duplex mode, otherwise, performing an initialization step.
8. A user access control device for a hybrid full-duplex half-duplex network, comprising:
an initialization unit, when M + K is larger than N and max { K, M } is less than or equal to N, used for increasing (N-K) virtual uplink users and (N-M) virtual downlink users, wherein K is the number of real uplink users, M is the number of real downlink users, and N is the number of channels;
a channel pre-allocation unit for constructing an NxN matrix { Pi,j}，Pi,jIs the sum of the transmit powers of a pair of users (i, j); if a pair of real users does not satisfy the QoS restriction condition, Pi,jIs equal to a constant L1，L1The sum of the maximum transmitting power of the full duplex time synchronization formed by more than two real users; if the real user and the virtual user form a full duplex pair, Pi,jHalf duplex power for real users; if two virtual users form a full duplex pair, Pi,jIs equal to a constant L2，L2The sum of the maximum transmitting power of the full duplex time synchronization formed by more than two real users; aiming at the minimum total transmitting power, acquiring a matrix { P }i,jThe solution of the assignment problem of the utility matrix is used as a control parameter to configure the user access;
the feasibility checking unit is used for eliminating the full-duplex user pair where the user is located and acquiring an idle channel when the user cannot access the system;
the channel reallocation unit is used for selecting n users with the minimum power from the real users which are not accessed to access in a half-duplex mode, wherein n is the number of empty channels;
the QoS limiting conditions are as follows:
Figure FDA0002231386510000041
wherein the content of the first and second substances,is the minimum data rate requirement for the uplink user,is the minimum data rate requirement for the downlink user,
Figure FDA0002231386510000045
for the rate of the upstream user to be,
Figure FDA0002231386510000046
for the rate of downlink users, a is the outage probability.
9. The apparatus of claim 8, wherein L is2＞L1。
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101296229A (en) * 2008-06-10 2008-10-29 顾士平 Device for implementing dynamic time-slot TDMA distribution
CN106358204A (en) * 2016-10-08 2017-01-25 浙江大学 Full-duplex inter-cell interference coordination method under honeycomb heterogeneous network

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101296229A (en) * 2008-06-10 2008-10-29 顾士平 Device for implementing dynamic time-slot TDMA distribution
CN106358204A (en) * 2016-10-08 2017-01-25 浙江大学 Full-duplex inter-cell interference coordination method under honeycomb heterogeneous network

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Full-duplex and half-duplex: power efficiency;Dingzhu Wen;《ELECTRONICS LETTERS》;20160317;第52卷(第6期);全文 *
Joint user scheduling and channel allocation;Guanding Yu1;《The Institution of Engineering and Technology》;20160531;第10卷(第5期);全文 *

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