CN108882317B - Communication link control method and device - Google Patents
Communication link control method and device Download PDFInfo
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- CN108882317B CN108882317B CN201710332017.0A CN201710332017A CN108882317B CN 108882317 B CN108882317 B CN 108882317B CN 201710332017 A CN201710332017 A CN 201710332017A CN 108882317 B CN108882317 B CN 108882317B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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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
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
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Abstract
The invention relates to a communication link control method and a device, a base station of a service wireless link receives a request for reducing a target signal-to-interference ratio of a base station of a non-service wireless link, wherein the request is sent by the base station of the non-service wireless link, and comprises the reduction of the target signal-to-interference ratio of the base station of the service wireless link; based on the request, the base station on which the serving radio link is located decreases the target signal-to-interference ratio of the base station on which the serving radio link is located by the decrease amount. The invention identifies the scene of the failure of the uplink and downlink unbalanced power control through the base station of the non-service wireless link, informs the base station of the service wireless link, reduces the transmitting power of the equipment by reducing the target signal-to-interference ratio of the base station of the service wireless link, and can reduce the uplink interference of the non-service cell, improve the throughput of the non-service cell and improve the signal quality of the non-service wireless link in the macro-diversity uplink and downlink unbalanced scene.
Description
Technical Field
The present invention relates to the field of universal mobile communication systems, and in particular, to a method and an apparatus for controlling a communication link.
Background
The 3Gpp (i.e. 3rd Generation Partnership Project) protocol greatly improves the download data rate of users after R5 (i.e. Release5, which is named Release5 in 3Gpp specification and abbreviated as R5) introduces High Speed Downlink Packet Access (HSDPA) technology. A High Speed Uplink Packet Access (HSUPA) technology is introduced in the R6 version, which greatly increases the upload data rate of users.
In a Universal Mobile Telecommunications System (UMTS), especially Wideband Code Division Multiple Access (WCDMA) 3G (3rd Generation), there is an unbalanced scenario in macro-diversity uplink and downlink. Where macro-diversity is the reception of two or more slow fading logarithmic signals via independent fading paths using the antennas of two or more different base stations or sectors, macro-diversity typically exists within the sector service overlap area of a base station of a CDMA network. In a CDMA system, the use of macro-diversity can greatly improve the reverse channel quality, extend the cell coverage and increase the reverse user capacity. In a sense, the soft handoff procedure of a CDMA system is subject to macro diversity.
Soft handoff (Soft Hand-over): the method is characterized in that the channel switching between cells is carried out when the carrier frequency of a pilot channel is the same, in the switching process, a mobile user keeps a communication link with an original base station and a new base station, only when a mobile station establishes stable communication in the new cell, the mobile station breaks the connection with the original base station, namely, the old connection is maintained, the new connection is established at the same time, the communication quality is improved by utilizing the diversity combination of the new link and the old link, after the mobile station establishes reliable connection with the new base station, the old link is broken, the soft switching can be only carried out between channels with the same frequency, the soft switching belongs to the unique switching function of a CDMA (Code Division Multiple Access) communication system, and the switching reliability can be effectively improved.
The soft handover uplink and downlink imbalance means uplink and downlink power imbalance, mainly means that the difference between uplink and downlink transmission power is too large, the uplink mainly refers to the transmission of a mobile station, and the downlink refers to the transmission of a base station.
In a wireless communication system, a Radio Link (RL) refers to a logical connection between a terminal and an access point of a Radio access system, and is generally composed of one or more Radio bearer transmissions in physical implementation. There is at most one radio link between a terminal and one radio access system access point (usually referred to as a cell). The serving radio link and the non-serving radio link, i.e., the serving RL and the non-serving RL, refer to a distinction made according to a service provided.
In a soft handover uplink and downlink unbalanced scenario, the uplink of a serving radio link is poor, and based on inner loop power control, a serving RL may issue a command for a user equipment (hereinafter referred to as UE) to raise transmission power; meanwhile, the non-serving RL can issue a command for the UE to reduce the transmission power based on inner loop power control because the uplink is better, and the result of combining the power control commands of the serving RL and the non-serving RL by the UE is that the non-serving RL is heard under normal conditions. Thus, the uplink interference of the cell (hereinafter referred to as non-serving cell) where the non-serving RL is located can be reduced to the minimum; however, the quality of the downlink channel of the non-serving RL is poor, so that the UE cannot correctly decode the power control command sent by the non-serving RL, the transmission power of the UE is increased, and the uplink interference of the UE to the non-serving cell is greatly increased.
Disclosure of Invention
In view of the above, it is desirable to provide a communication link control method and apparatus for reducing uplink interference to a non-serving cell when power control of a non-serving RL inner loop fails.
A method of communication link control, the method comprising:
a base station where a service wireless link is located receives a request for reducing a target signal-to-interference ratio of the base station where the service wireless link is located, wherein the request is sent by a base station where a non-service wireless link is located, and the request comprises a reduction amount for reducing the target signal-to-interference ratio of the base station where the service wireless link is located;
based on the request, the base station on which the serving radio link is located decreases the target signal-to-interference ratio of the base station on which the serving radio link is located by the decrease amount.
A communication link control apparatus, the apparatus comprising:
a receiving module, configured to receive, by a base station where a serving radio link is located, a request for reducing a target signal-to-interference ratio of the base station where a non-serving radio link is located, where the request includes a reduction amount for reducing the target signal-to-interference ratio of the base station where the serving radio link is located;
a reduction module for reducing the target signal-to-interference ratio of the base station on which the serving radio link is located by the reduction amount according to the request.
One or more non-transitory computer-readable storage media storing computer-executable instructions that, when executed by one or more processors, cause the one or more processors to perform the steps of the method.
A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the steps of the method are implemented when the computer program is executed by the processor.
The invention provides a communication link control method and a device, a base station of a service wireless link receives a request for reducing a target signal-to-interference ratio of a base station of a non-service wireless link, wherein the request is sent by the base station of the non-service wireless link, and comprises the reduction of the target signal-to-interference ratio of the base station of the service wireless link; based on the request, the base station on which the serving radio link is located decreases the target signal-to-interference ratio of the base station on which the serving radio link is located by the decrease amount. According to the invention, after the scene of power control failure is identified by the base station of the non-service wireless link, the base station of the service wireless link is informed, the base station of the service wireless link reduces the transmitting power of the user equipment by reducing the target signal-to-interference ratio, the uplink interference of the non-service cell can be reduced in the macro diversity uplink and downlink unbalanced scene, and the throughput of the non-service cell and the signal quality of the non-service wireless link are improved.
Drawings
Fig. 1 is a flowchart of an embodiment of a communication link control method provided in the present invention;
fig. 2 is a sequence diagram of message interaction involved in an application scenario in an embodiment of a communication link control method provided in the present invention;
fig. 3 is a flowchart of another embodiment of a communication link control method provided by the present invention;
fig. 4 is a block diagram of a program module of an embodiment of a communication link control apparatus according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the invention provides a method for reducing uplink interference of a non-service cell, which aims to solve the problem of interference rise of the non-service cell caused by failure of power control of a non-service RL inner ring. The method mainly comprises the following steps: detecting an uplink and downlink imbalance scene by a base station (hereinafter referred to as a non-serving NODEB) where a non-serving RL is located at a preset fixed period M, and sending a request for reducing a target Signal to Interference Ratio (SIR) of the base station where the serving RL is located to the base station (hereinafter referred to as a serving NODEB) where the serving RL is located after the detection, and reducing the amount on the band; after receiving the request, the service NODEB reduces the target SIR of the base station where the service RL is located to the current target SIR minus the reduction amount, and after keeping N frames or a certain time length, the target SIR of the base station where the service RL is located is restored to the SIR value before reduction, namely, the aim of reducing the transmitting power of the UE is achieved by reducing the target SIR of the service NODEB, so that the interference of the UE to the non-service cell is reduced.
Wherein, the base station where the service wireless link is located refers to the base station where the wireless link providing the communication service is located; the base station where the non-serving radio link is located, relative to the base station where the serving radio link is located, refers to the base station where the radio link is located, which performs coordination control in order to enhance the uplink performance of the network, and includes a soft handover service, and the base station where the serving radio link is located and the base station where the non-serving radio link is located are set as needed.
The inner loop power control, i.e. inner loop power control, means that the base station compares the signal-to-noise ratio (SIR) of the received signal with an expected value (i.e. SIR Target), and gives an instruction of whether the user equipment increases or decreases the transmission power, so that the uplink signal-to-noise ratio received by the base station converges to the Target signal-to-noise ratio.
The target SIR is an SIR that is set to dynamically adjust the transmit power of the power transmitting end according to a communication protocol, and the inner loop power control mainly functions to control the transmit power of a physical channel so that the received SIR of a received uplink signal converges to the target SIR. Specifically, a base station Target SIR (Target SIR) is set, the uplink inner loop power control is that in the uplink, the base station frequently estimates the received signal-to-interference ratio (SIR) value and compares the SIR value with the set base station Target SIR value to decide to increase or decrease the transmitting power of the terminal. If the measured received SIR of the base station is higher than the target SIR, the base station commands the mobile station (UE) to reduce power; if the measured S/R is lower than the target S/R value, the base station commands the mobile station (UE) to power up.
The 'cell' in mobile communication is the smallest area unit in the mobile management, the coverage of communication network signals is divided into many small areas through the coverage range of an antenna, a plurality of users are accessed into the coverage area under each area for communication, for example, a base station (communication tower) is provided, the effective coverage distance (a mobile phone can receive signals and can transmit the signals to the base station) is 10KM (kilometer), then the base station is taken as the center of a circle, 10KM is taken as the radius, a circle is drawn, and the circle is the 'cell' formed by the coverage of the base station.
The following is described with specific examples:
referring to fig. 1, in one embodiment, a method for communication link control is provided, the method comprising:
s1, the base station where the serving radio link is located receives a request for reducing the target signal-to-interference ratio of the base station where the serving radio link is located, where the request is sent by the base station where the non-serving radio link is located, and the request includes a reduction amount for reducing the target signal-to-interference ratio of the base station where the serving radio link is located.
A Radio Link (RL), which is a link that must be configured for establishing a DCH (enhanced dedicated channel, DCH) connection between an RNC (Radio network controller) and a NodeB (base station), whenever data travels through the DCH.
In one embodiment, the step S1 is preceded by:
s00, the base station of the non-service wireless link detects whether the preset condition of sending the request for reducing the target signal to interference ratio of the base station of the service wireless link to the base station of the service wireless link is met or not according to the preset period.
The preset period, for example, the base station where the non-serving radio link is located uses 160 milliseconds as a preset fixed period to detect whether a preset condition for reducing the target signal to interference ratio of the serving radio link is sent to the base station where the radio link is located is met in a certain scenario.
S01, when the base station of the non-service wireless link judges that the preset condition is met, sending a request for reducing the target signal to interference ratio of the base station of the service wireless link to the base station of the service wireless link.
In one embodiment, the preset conditions include:
(1) the difference value between the current signal-to-interference ratio of the non-service wireless link and the target signal-to-interference ratio of the base station where the non-service wireless link is located exceeds a preset signal-to-interference ratio threshold value;
(2) and the receiving total bandwidth power of the non-service cell where the non-service wireless link is located is higher than a preset power threshold.
In one embodiment, the reduction amount is proportional to the current signal-to-interference ratio of the non-serving radio link and the target signal-to-interference ratio difference of the base station where the non-serving radio link is located, for example, the reduction amount may be a multiple of the current signal-to-interference ratio of the non-serving radio link and the target signal-to-interference ratio difference of the base station where the non-serving radio link is located.
The current signal-to-interference ratio of the non-service wireless link refers to an uplink signal-to-noise ratio finally received by the base station after the terminal transmitting power measured by the base station where the non-service wireless link is located is transmitted through a physical channel. The target signal interference of the base station where the non-serving radio link is located refers to a target SIR set for adjusting the transmission power of the user equipment.
Specifically, the non-serving RL detects whether the following conditions are met at a preset fixed period M: 1) the current SIR of the non-service wireless link-the target SIR of the base station where the non-service wireless link is located exceeds a threshold X (namely a preset signal-to-interference ratio threshold); 2) the Total Received broadband power (namely Received Total Wideband power, abbreviated as RTWP) of the non-service cell where the current non-service wireless link is located is higher than a threshold Y; if the two conditions are satisfied simultaneously, the base station where the non-serving radio link is located sends a request for reducing the target SIR of the base station where the serving radio link is located to the serving RL, with an on-band reduction, the reduction being: the current SIR of the non-serving RL-the target SIR of the base station where the non-serving radio link is located. The time is preferably 1 time, and may also be 0.8 time or 1.2 times, and may be specifically set according to needs, for example, the preset fixed period M may be set to 160 milliseconds.
The signal-to-interference ratio is a ratio of energy of a signal to sum of interference energy (such as co-channel interference, multipath and the like) and additive noise energy, and the value range is-11 dB to 20dB, wherein the additive noise generally refers to thermal noise, shot noise and the like, the additive noise and the additive noise are added, and the noise exists regardless of the existence of the signal.
The preset signal-to-interference ratio threshold may be set as needed or obtained according to historical data statistics, that is, the X is set to 4dB, for example, and the preset power threshold, that is, the Y is also set to 4dB, for example. Where dB, deciBel (dB) is a unit of measure for the quantitative ratio of two identical units.
Wherein, the Total receiving bandwidth Power, namely RTWP, Received Total Wideband Power, the Total receiving bandwidth Power is the Total signal Power Received in the bandwidth of 5 MHz. RTWP reflects the total noise in one cell.
S2, according to the request, the base station of the serving radio link decreases the target signal-to-interference ratio of the base station of the serving radio link by the decrease amount.
Namely, the target signal-to-interference ratio of the base station where the service wireless link is located is reduced by the reduction amount, specifically, after the base station where the service RL is located receives the request, the base station where the service RL is located immediately carries out reduction operation according to the reduction amount, the target SIR of the base station where the service RL is located is reduced to be the reduction amount subtracted from the current target SIR, and the transmitting power of the terminal is reduced by adjusting the target signal-to-interference ratio of the base station where the service wireless link is located.
In one embodiment, after step S2, the method further includes:
and when the target signal-to-interference ratio of the base station where the service wireless link is positioned is reduced for a duration reaching a preset threshold, recovering the target signal-to-interference ratio of the base station where the service wireless link is positioned to a value before reduction.
The duration of the reduction is preset to be reduced according to the reduction amount, and the reduction duration needs to be continued, such as one frame or 10 milliseconds.
Further, since the reduction operation is not performed only once, but is repeated according to the reduction amount continuously and circularly, in order to prevent the target SIR of the base station where the serving RL is located from being reduced too much, so that the transmission power of the terminal is reduced too much, which affects the balance of the inner loop power control, and in turn increases the uplink interference impact on the non-serving cell, the reduction amplitude of the target SIR of the base station where the serving RL is located is controlled, and after N frames or a certain time period, for example, 1 frame or 10 milliseconds, the target SIR of the base station where the serving RL is located is restored to the value before reduction.
Referring to fig. 2 and 3, fig. 2 is a message interaction sequence diagram related to an application scenario in an embodiment of the communication link control method provided, in which a request for reducing the target SIR of a serving NODEB is sent from a non-serving NODEB to the serving NODEB via a radio network controller.
Fig. 3 is a flowchart of another embodiment of the communication link control method provided by the present invention, which is mainly divided into two branches, a serving RL and a non-serving RL, and the control is realized by setting a timer:
1) the non-serving RL starts a timer with a duration set to M, where M may be set to 160 milliseconds; if the target SIR request for reducing the base station where the service RL is located is met, the base station where the non-service RL is located sends the target SIR request for reducing the base station where the service RL is located to the base station where the service RL is located, and the timer is restarted; otherwise, directly restarting the timer;
2) when the base station where the service RL is located receives a request for reducing the target SIR of the base station where the service RL is located, the base station where the service RL is located reduces the target SIR of the base station where the service RL is located, a timer of the service RL is started, the time length of the timer is set to be N, and for example, the N can be set to be 10 milliseconds; and when the timer arrives, namely the time duration reaches the time length set by the timer, the target SIR is restored to the target SIR value before the reduction.
In short, the invention informs the serving RL base station after the base station where the non-serving RL is located identifies the scene of power control failure, and the base station where the serving RL is located reduces the UE transmitting power by reducing the target SIR of the base station, thereby being capable of reducing the uplink interference of a non-serving cell, improving the throughput of the non-serving cell, effectively improving the signal quality of the serving RL and improving the service quality of a user in the macro-diversity uplink and downlink unbalanced scene.
Referring to fig. 4, in an embodiment, the present invention further provides a communication link control apparatus, including:
a receiving module 10, configured to receive, by a base station where a serving radio link is located, a request for reducing a target signal-to-interference ratio of the base station where a non-serving radio link is located, where the request includes a reduction amount of the target signal-to-interference ratio of the base station where the serving radio link is located;
a reducing module 20, configured to reduce, according to the request, the target signal-to-interference ratio of the base station where the serving radio link is located by the reduction amount.
In one embodiment, further comprising:
and the recovery module is used for recovering the target signal-to-interference ratio of the base station where the service wireless link is positioned to the value before reduction after the time for reducing the target signal-to-interference ratio of the base station where the service wireless link is positioned reaches a preset threshold value.
In one embodiment, the apparatus further comprises:
the detection module is used for detecting whether a preset condition for sending a request for reducing the target signal-to-interference ratio of the base station where the service wireless link is located to the base station where the non-service wireless link is located is met or not according to a preset period;
and the judging module is used for sending a request for reducing the target signal-to-interference ratio of the base station where the service wireless link is located to the base station where the service wireless link is located when the base station where the non-service wireless link is located judges that the preset condition is met.
In one embodiment, the preset conditions include:
the difference value between the current signal-to-interference ratio of the non-service wireless link and the target signal-to-interference ratio of the base station where the non-service wireless link is located exceeds a preset signal-to-interference ratio threshold value;
and the receiving total bandwidth power of the non-service cell where the non-service wireless link is located is higher than a preset power threshold.
In one embodiment, the reduction is proportional to a current signal-to-interference ratio of the non-serving radio link and a target signal-to-interference ratio difference of a base station in which the serving radio link is located.
In one embodiment, the invention provides one or more non-transitory computer-readable storage media storing computer-executable instructions that, when executed by one or more processors, cause the one or more processors to perform the steps of:
a base station where a service wireless link is located receives a request for reducing a target signal-to-interference ratio of the base station where the service wireless link is located, wherein the request is sent by a base station where a non-service wireless link is located, and the request comprises a reduction amount for reducing the target signal-to-interference ratio of the base station where the service wireless link is located;
based on the request, the base station on which the serving radio link is located decreases the target signal-to-interference ratio of the base station on which the serving radio link is located by the decrease amount.
In one embodiment, said step of decreasing, by said decrease amount, the target signal-to-interference ratio of the base station on which the serving radio link is located, based on said request, further comprises:
and when the target signal-to-interference ratio of the base station where the service wireless link is positioned is reduced for a duration reaching a preset threshold, recovering the target signal-to-interference ratio of the base station where the service wireless link is positioned to a value before reduction.
In one embodiment, the step of receiving, by the base station where the serving radio link is located, the request for reducing the target signal-to-interference ratio of the base station where the serving radio link is located, where the base station where the non-serving radio link is located, further includes:
detecting whether a preset condition for sending a target signal-to-interference ratio request for reducing a base station where a non-service wireless link is located to the base station where the service wireless link is located is met or not according to a preset period;
and when the base station where the non-service wireless link is positioned judges that the preset condition is met, sending a request for reducing the target signal-to-interference ratio of the base station where the service wireless link is positioned to the base station where the service wireless link is positioned.
In one embodiment, the preset conditions include:
the difference value between the current signal-to-interference ratio of the non-service wireless link and the target signal-to-interference ratio of the base station where the non-service wireless link is located exceeds a preset signal-to-interference ratio threshold value;
and the receiving total bandwidth power of the non-service cell where the non-service wireless link is located is higher than a preset power threshold.
In one embodiment, the reduction is proportional to a current signal-to-interference ratio of the non-serving radio link and a target signal-to-interference ratio difference of a base station in which the serving radio link is located.
In one embodiment, the present invention provides a computer device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the following steps when executing the computer program;
a base station where a service wireless link is located receives a request for reducing a target signal-to-interference ratio of the base station where the service wireless link is located, wherein the request is sent by a base station where a non-service wireless link is located, and the request comprises a reduction amount for reducing the target signal-to-interference ratio of the base station where the service wireless link is located;
based on the request, the base station on which the serving radio link is located decreases the target signal-to-interference ratio of the base station on which the serving radio link is located by the decrease amount.
In one embodiment, said step of decreasing, by said decrease amount, the target signal-to-interference ratio of the base station on which the serving radio link is located, based on said request, further comprises:
and when the target signal-to-interference ratio of the base station where the service wireless link is positioned is reduced for a duration reaching a preset threshold, recovering the target signal-to-interference ratio of the base station where the service wireless link is positioned to a value before reduction.
In one embodiment, the step of receiving, by the base station where the serving radio link is located, the request for reducing the target signal-to-interference ratio of the base station where the serving radio link is located, where the base station where the non-serving radio link is located, further includes:
detecting whether a preset condition for sending a target signal-to-interference ratio request for reducing a base station where a non-service wireless link is located to the base station where the service wireless link is located is met or not according to a preset period;
and when the base station where the non-service wireless link is positioned judges that the preset condition is met, sending a request for reducing the target signal-to-interference ratio of the base station where the service wireless link is positioned to the base station where the service wireless link is positioned.
In one embodiment, the preset conditions include:
the difference value between the current signal-to-interference ratio of the non-service wireless link and the target signal-to-interference ratio of the base station where the non-service wireless link is located exceeds a preset signal-to-interference ratio threshold value;
and the receiving total bandwidth power of the non-service cell where the non-service wireless link is located is higher than a preset power threshold.
In one embodiment, the reduction is proportional to a current signal-to-interference ratio of the non-serving radio link and a target signal-to-interference ratio difference of a base station in which the serving radio link is located.
In summary, the present invention provides a method, an apparatus, a storage medium, and a computer device for controlling uplink interference of a non-serving cell in an uplink/downlink unbalanced scenario, so as to solve the problem of interference rise of the non-serving cell due to power control failure of a non-serving RL inner loop. The method mainly comprises the following steps: detecting the scene by a base station (called non-service NODEB) where the non-service RL is located at a preset fixed period M, and after the scene is detected, sending a request for reducing a target Signal to Interference Ratio (SIR) of the base station (called service NODEB) where the service RL is located, and reducing the SIR on the band; after receiving the request, the serving NODEB reduces the target SIR of the base station where the serving RL is located to the value obtained by subtracting the reduction from the current target SIR of the base station where the serving RL is located, that is, the target SIR of the serving NODEB is reduced to achieve the purpose of reducing the transmission power of the UE, thereby reducing the interference of the UE to the non-serving cell.
It will be understood by those skilled in the art that all or part of the processes in the methods of the embodiments described above may be implemented by hardware related to instructions of a computer program, which may be stored in a computer readable storage medium, for example, in the storage medium of a computer system, and executed by at least one processor in the computer system, so as to implement the processes of the embodiments including the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method of communication link control, the method comprising:
a base station where a service wireless link is located receives a request for reducing a target signal-to-interference ratio of the base station where the service wireless link is located, wherein the request is sent by a base station where a non-service wireless link is located, and the request comprises a reduction amount for reducing the target signal-to-interference ratio of the base station where the service wireless link is located;
based on the request, the base station on which the serving radio link is located decreases the target signal-to-interference ratio of the base station on which the serving radio link is located by the decrease amount.
2. The method of claim 1, wherein the step of reducing the target signal-to-interference ratio of the base station on which the serving radio link is located by the reduction amount according to the request further comprises:
and when the target signal-to-interference ratio of the base station where the service wireless link is positioned is reduced for a duration reaching a preset threshold, recovering the target signal-to-interference ratio of the base station where the service wireless link is positioned to a value before reduction.
3. The method of claim 1, wherein the step of receiving, by the base station with the serving radio link, the request for reducing the target signal-to-interference ratio of the base station with the serving radio link from the base station with the non-serving radio link is further preceded by the step of:
detecting whether a preset condition for sending a target signal-to-interference ratio request for reducing a base station where a non-service wireless link is located to the base station where the service wireless link is located is met or not according to a preset period;
and when the base station where the non-service wireless link is positioned judges that the preset condition is met, sending a request for reducing the target signal-to-interference ratio of the base station where the service wireless link is positioned to the base station where the service wireless link is positioned.
4. The method according to claim 3, wherein the preset conditions include:
the difference value between the current signal-to-interference ratio of the non-service wireless link and the target signal-to-interference ratio of the base station where the non-service wireless link is located exceeds a preset signal-to-interference ratio threshold value;
and the receiving total bandwidth power of the non-service cell where the non-service wireless link is located is higher than a preset power threshold.
5. The method of claim 1, wherein the reduction is proportional to a current signal-to-interference ratio of the non-serving radio link and a target signal-to-interference ratio difference of a base station in which the non-serving radio link is located.
6. A communication link control apparatus, characterized in that the apparatus comprises:
a receiving module, configured to receive, by a base station where a serving radio link is located, a request for reducing a target signal-to-interference ratio of the base station where a non-serving radio link is located, where the request includes a reduction amount for reducing the target signal-to-interference ratio of the base station where the serving radio link is located;
a reduction module for reducing the target signal-to-interference ratio of the base station on which the serving radio link is located by the reduction amount according to the request.
7. The apparatus of claim 6, further comprising:
and the recovery module is used for recovering the target signal-to-interference ratio of the base station where the service wireless link is positioned to the value before reduction after the time for reducing the target signal-to-interference ratio of the base station where the service wireless link is positioned reaches a preset threshold value.
8. The apparatus of claim 6, further comprising:
the detection module is used for detecting whether a preset condition for sending a request for reducing the target signal-to-interference ratio of the base station where the service wireless link is located to the base station where the non-service wireless link is located is met or not according to a preset period;
and the judging module is used for sending a request for reducing the target signal-to-interference ratio of the base station where the service wireless link is located to the base station where the service wireless link is located when the base station where the non-service wireless link is located judges that the preset condition is met.
9. The apparatus of claim 8, wherein the preset condition comprises:
the difference value between the current signal-to-interference ratio of the non-service wireless link and the target signal-to-interference ratio of the base station where the non-service wireless link is located exceeds a preset signal-to-interference ratio threshold value;
and the receiving total bandwidth power of the non-service cell where the non-service wireless link is located is higher than a preset power threshold.
10. The apparatus of claim 6, wherein the amount of reduction is proportional to a current signal-to-interference ratio of the non-serving radio link and a target signal-to-interference ratio difference for a base station in which the non-serving radio link is located.
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