WO2014180424A1 - 提高用户切换接入成功率的方法、装置和计算机存储介质 - Google Patents

提高用户切换接入成功率的方法、装置和计算机存储介质 Download PDF

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Publication number
WO2014180424A1
WO2014180424A1 PCT/CN2014/079246 CN2014079246W WO2014180424A1 WO 2014180424 A1 WO2014180424 A1 WO 2014180424A1 CN 2014079246 W CN2014079246 W CN 2014079246W WO 2014180424 A1 WO2014180424 A1 WO 2014180424A1
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Prior art keywords
terminal
power
transmitted
switched
paired
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PCT/CN2014/079246
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English (en)
French (fr)
Inventor
侯晓辉
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中兴通讯股份有限公司
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Publication of WO2014180424A1 publication Critical patent/WO2014180424A1/zh

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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
    • H04W36/0055—Transmission or use of information for re-establishing the radio link

Definitions

  • the present invention relates to a user handover access technology in a Voice Services over Adaptive Multi-user channels on One Slot (VAMOS), and in particular, to a method, a device, and a method for improving a user handover access success rate.
  • VAMOS Voice Services over Adaptive Multi-user channels on One Slot
  • VAMOS is the evolution of the Global System for Mobile Communications (GSM) for the Convergence Sublayer (CS), as defined by the 3GPP (The 3rd Generation Partnership Project).
  • GSM Global System for Mobile Communications
  • CS Convergence Sublayer
  • the basic principle of VAMOS is to realize the voice transmission of two users simultaneously under one channel.
  • the downstream modulation scheme of VAMOS is Adaptive Quadrature Phase Shift Keying (AQPSK), and the upstream modulation scheme is two Gaussian filtering.
  • GMSK Gaussian Filtered Minimum Shift Keying
  • the terminal is divided into a legacy terminal that does not support VAMOS (VAMOS not supported terminal), a VAMOS I terminal, and a VAMOS II terminal; wherein, VAMOS I And the II terminal supports a new training sequence code set 2 (TSC Set2, Training Sequence Code Set2), and supports transmission of a slow SAS (Slow Associated Control Channel).
  • VAMOS not supported terminal VAMOS not supported terminal
  • VAMOS I terminal VAMOS I terminal
  • VAMOS II terminal supports a new training sequence code set 2 (TSC Set2, Training Sequence Code Set2), and supports transmission of a slow SAS (Slow Associated Control Channel).
  • TSC Set2 Training Sequence Code Set2
  • SAS Slow Associated Control Channel
  • the in-network users of the GSM system are mostly legacy terminals, and the anti-interference capability of the legacy terminals is also divided into several levels: non-single-antenna interference cancellation (NON SAIC, Non Single Antenna Interference Cancellation) terminals, and interference 4 Single Antenna Interference Cancellation (SAIC) terminal.
  • NON SAIC Non Single Antenna Interference Cancellation
  • SAIC interference 4 Single Antenna Interference Cancellation
  • VAMOS Voice over IP
  • NON SAIC terminal The terminal reports as a NON SAIC terminal, and the base station detection is finally determined to be NON SAIC. This type of terminal has no interference suppression capability;
  • MUTE SAIC terminal The terminal reports as a NON SAIC terminal, and the base station detects it as a SAIC terminal;
  • SARC AFC Single Antenna Interference Cancellation Automatic Frequency Control
  • the SAIC terminal is determined on the terminal, and the SAIC AFC is determined after the base station detects. This type of terminal has SAIC capability but has a frequency offset problem;
  • SAIC Terminal The terminal is reported as a SAIC terminal, and the base station detects the SAIC terminal;
  • the VAMOS I terminal supports the training sequence set TSC SET2, and does not support joint detection of the physical layer;
  • VAMOS II terminal Supports training sequence set TSC SET2, which supports joint detection of physical layer.
  • VAMOS II VAMOS II 7 SAIC AFC VAMOS I
  • the prior art When considering the pairing and de-pairing of VAMOS, the prior art only considers uplink and downlink uplink and downlink power control at the measurement report level, that is, 480 ms, and does not perform further refined power control at the burst level.
  • the interference caused by the downlink transmission signaling is relatively large, so that the terminal fails to decode the control signaling, thereby affecting the handover success rate.
  • the embodiments of the present invention are directed to providing a method, a device, and a computer storage medium for improving the success rate of a user's switching access, which can effectively solve the problem of low handover success rate due to interference during user switching.
  • a first aspect of the embodiments of the present invention provides a method for improving a success rate of a user switching access, where the method includes:
  • the power P1 transmitted to the terminal to be switched is greater than the power P0 transmitted to the paired terminal.
  • the power P1 transmitted to the to-be-switched terminal is greater than the power P0 transmitted to the paired terminal according to the downlink modulation parameter value:
  • the power P1 transmitted to the terminal to be switched by the burst location of the FACCH is greater than the power P0 transmitted to the paired terminal.
  • the sending the to-be-cut terminal fast associated control channel FACCH includes:
  • the to-be-switched terminal FACCH is transmitted at the mute frame position of the transmitting pairing terminal, otherwise, the to-be-switched terminal FACCH is sent immediately after the preset duration ends.
  • the method further includes:
  • the total power transmitted to the terminal to be switched and the power transmitted to the paired terminal is increased under the condition that the power P1 transmitted to the terminal to be switched is greater than the power P0 transmitted to the paired terminal.
  • the paired terminal is a destination pairing terminal when the VAMOS is paired, or is the original pairing terminal when the VAMOS is paired.
  • the adjusted downlink modulation parameter value is: adjusting a relative power decibel difference between the power transmitted to the terminal to be switched and the power transmitted to the paired terminal.
  • the second aspect of the embodiments of the present invention provides an apparatus for improving a user's switching access success rate, where the apparatus includes an adjustment module and a control module, where
  • the parameter adjustment module is configured to adjust a downlink modulation parameter value when the base station initiates a single-slot adaptive multi-user voice service VAMOS user terminal handover;
  • the power adjustment module is configured to enable the power P1 transmitted to the to-be-switched terminal to be greater than the power P0 transmitted to the paired terminal according to the downlink modulation parameter value.
  • the power P1 transmitted to the to-be-switched terminal is greater than the power P0 transmitted to the paired terminal according to the downlink modulation parameter value.
  • the power adjustment module is configured to transmit, according to the downlink modulation parameter value, the power P1 transmitted to the to-be-switched terminal in the burst burst position of the fast-path control channel FACCH of the to-be-cut terminal to be greater than the power P0 transmitted to the paired terminal.
  • the device further includes a detection module, a timing module, and a sending module;
  • the detecting module is configured to detect a silence frame sent to the pairing terminal
  • the timing module is configured to record a duration of detecting a silence frame sent by the pairing terminal, and the sending module is configured to: when the detection module detects the silence frame sent to the paired terminal within a preset duration, send the silence frame position of the paired terminal Sending the to-be-switched terminal FACCH; or when the detecting module does not detect the paired terminal silence frame within the preset duration, immediately transmitting the to-be-switched terminal FACCH at the end of the preset duration.
  • the power adjustment module is further configured to increase the total power of the power transmitted to the to-be-switched terminal and the power transmitted to the paired terminal under the condition that the power P1 transmitted to the to-be-switched terminal is greater than the power P0 transmitted to the paired terminal. .
  • the parameter adjustment module is configured to adjust a relative power decibel difference between the power transmitted to the terminal to be switched and the power transmitted to the paired terminal.
  • a third aspect of the embodiments of the present invention provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the method according to any one of the first aspects of the embodiments of the present invention. .
  • the method, the device and the computer storage medium for improving the success rate of the user switching access provided by the embodiment of the present invention can reduce the power transmitted to the terminal to be switched and the power transmitted to the pairing terminal by adjusting the value of the downlink modulation parameter, thereby reducing the transmission. Giving the power of the paired terminal to the switching terminal Interference; In this way, the anti-interference ability of the terminal to be switched to external noise can be improved.
  • the power control of the embodiment of the present invention is performed simultaneously with the downlink power control of the 480 ms measurement report layer in the prior art. Therefore, the access success rate of the terminal handover can be improved, and the user's call experience is improved.
  • Figure 1 is a schematic diagram showing the structure of the current traffic channel measurement
  • FIG. 1 is a schematic flowchart of a method for improving a user handover access success rate according to an embodiment of the invention
  • FIG. 2 is a schematic flowchart of a method for improving a user handover access success rate according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic structural view of a baseband single board according to Embodiment 1 of the present invention.
  • FIG. 4 is a schematic flowchart of a method for improving a user handover access success rate according to Embodiment 2 of the present invention.
  • FIG. 5 is a schematic structural diagram of a baseband single board according to Embodiment 2 of the present invention.
  • FIG. 5a is a schematic diagram of a structure of an apparatus for improving user switching access success rate according to Embodiment 2 of the present invention.
  • FIG. 6 is a schematic structural diagram of an apparatus for improving a user handover access success rate according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of the structure of an apparatus for improving the success rate of user handover access according to an embodiment of the present invention.
  • FIG. 1A the method for improving the success rate of user handover access according to the embodiment of the present invention is as shown in FIG. Includes:
  • Step 101 When the base station initiates a single-slot adaptive multi-user voice service, the VAMOS user terminal switches, and adjusts the downlink modulation parameter value.
  • Step 102 According to the downlink modulation parameter value, the power P1 transmitted to the terminal to be switched is greater than the power P0 transmitted to the pairing terminal.
  • the downlink power of the base station to be switched is higher than the downlink power transmitted to the paired terminal, and the downlink signal of the paired terminal is interfered with the downlink signal of the terminal to be switched, and the transmission is improved.
  • the anti-interference capability of the downlink signal of the terminal to be switched can further improve the successful handover rate of the downlink signal to be switched according to the received terminal.
  • the embodiment of the present invention makes the following further improvements to the power adjustment:
  • the power P1 transmitted to the to-be-switched terminal at the burst burst position of the fast-associated control channel FACCH for transmitting the to-be-cut terminal is greater than the power P0 transmitted to the paired terminal.
  • Logical channels are divided into two categories—the traffic channel (TCH) and the control channel (CCH, Control Channel), where the traffic channel is used to transmit the encoded voice or client data, on the uplink and downlink channels, in point-to-point mode. Propagation; Control channel is used to transmit signaling or to synchronize data.
  • TCH traffic channel
  • CCH Control Channel
  • the burst also includes a service burst and a control burst; the service burst is a burst occurring on a traffic channel; and the control burst is a burst occurring on a control channel.
  • the burst position of the FACCH can be understood as the burst position of the FACCH.
  • the FACCH is a fast associated control channel and is an abbreviation of Fast Associated Control Channel; when a signaling message needs to be transmitted in a service channel, A TCH slot can be temporarily borrowed for use as the FACCH, which occurs at the time of handover, by borrowing 20 ms of voice or data time to transmit signaling, a situation known as stealing frames.
  • FIG. 1 is a schematic diagram of the current traffic channel measurement report period structure.
  • one measurement report period is 480 ms, and one measurement report contains four multiframes, each of which has a duration of 120 ms, each The multiframe contains 26 service bursts.
  • the handover occurs, that is, when the frame is stolen, as shown in FIG. 1, the first four bursts in the multiframe 1 are stolen into the FACCH. From the perspective of the terminal, when the handover is performed, the base station steals through the four bursts.
  • the frame transmits FACCH; in Fig. 1, F denotes FACCH and T denotes TCH.
  • VAMOS Voice over IP
  • userl and userO are used as examples.
  • Userl is the terminal to be switched, and user0 is the destination pairing terminal to be paired.
  • the handover is initiated, the usual practice is to pass In the intra-cell handover, the user userl is switched to the userO's wireless channel, so that userl and userO form a VAMOS pair (pair); in the process of handover, for the user userl to be switched, there must be a control plane signaling intra-cell handover.
  • the transmission of this signaling is subject to data interference from the user userO. This interference may be control signaling or voice. If the power transmitted by user1 is too low, or some power considerations are not taken, userl will not be able to decode the signaling sent by the network side, causing pairing failure.
  • Scenario 2 For the VAMOS pair that has already been formed, due to the movement of two users or the change of the external wireless environment, the current pairing relationship is not suitable for maintaining the pairing relationship in terms of wireless transmission requirements. Therefore, the network needs to be paired. The relationship is lifted.
  • userl and userO are still taken as an example.
  • Userl is the terminal to be switched, and user0 is the original pairing terminal when the pairing is performed.
  • the usual practice is to switch userl to a new channel with better wireless conditions through the switching operation.
  • the user userl of the handover must have the handover of the control plane signaling intra-cell handover.
  • the transmission of this signaling is subject to the data interference of the user user0. This interference may be control signaling. It is also possible that the voice is transmitted. If the power transmitted by the userl is too low, or the power is not considered, the userl cannot decode the signaling sent by the network side, causing the handover to fail.
  • the embodiment of the present invention further includes: improving the power transmitted to the terminal to be switched and transmitting to the paired terminal under the condition that the power P1 transmitted to the terminal to be switched is greater than the power P0 transmitted to the paired terminal.
  • the total power is specifically to increase the sum of P1 and P0.
  • the sum of the total power of P1 and P0 is realized according to the value of the downlink modulation parameter.
  • This embodiment is preferably to increase the sum of the burst burst positions P1 and P0 of the fast associated control channel FACCH at the terminal to be transmitted.
  • FIG. 2 is a schematic flowchart of a method for improving a user's handover success rate according to an embodiment of the present invention. As shown in FIG. 2, the method for improving a user handover access success rate includes the following steps: Step 201: A base station initiates a VAMOS user Terminal switching
  • Step 202 Adjust the downlink modulation parameter value, so that the power P1 transmitted to the to-be-switched terminal in the burst position of the FACCH to be switched is greater than the power P0 transmitted to the paired terminal, and simultaneously increase the total transmission to the to-be-switched terminal and the paired terminal. power.
  • the paired terminal may be a destination pairing terminal when the VAMOS is paired, or may be an original pairing terminal when the VAMOS is paired.
  • the power P0 is high by x dB.
  • the main purpose of adjusting the alpha value is: In order to make the terminal to be switched better resist the interference of another user pairing terminal in the VAMOS pair, Therefore, the power transmitted to the terminal to be switched should be greater than the power of the paired terminal, that is, the alpha should be greater than zero.
  • the power P1 transmitted to the terminal to be switched is 2 dB higher than the power P0 of the paired terminal;
  • the main purpose of the total power P is to: improve the suppression of noise and interference from the terminal to be switched to the outside.
  • the actual capacity of the two terminals participating in the pairing may be quite different, as listed in Table 1. Therefore, the specific implementation can be used for the specific type of terminal and anti-interference requirements, the value of the modulation parameter alpha. Make settings to achieve the best switching results.
  • the power decibel difference between the power transmitted by the base station to the to-be-switched terminal and the paired terminal is in accordance with the downlink modulation parameter alpha requirement.
  • the total power transmitted to the to-be-switched terminal and the paired terminal is increased.
  • alpha 2
  • the total power transmitted to the to-be-switched terminal and the paired terminal is raised in the case where the power P1 transmitted to the terminal to be switched is 2 dB higher than the power P0 of the paired terminal.
  • the total power of the to-be-switched terminal to be transmitted and the paired terminal may be adjusted to be: the total power of the to-be-switched terminal to be transmitted and the paired terminal is adjusted to be the maximum value of the base station transmit power. .
  • FIG. 3 is a schematic structural diagram of a baseband (BB, Baseband) board according to an embodiment of the present invention.
  • BB Baseband
  • a base station initiates a user handover, a multi-frame will borrow 20 ms.
  • the voice or data time is used to send the FACCH.
  • the base station transmits the FACCH through four burst frames.
  • the F position in FIG. 3 is the location where the service burst sends the FACCH; correspondingly, in FIG.
  • the alpha value of the downlink modulation parameter is adjusted, and the total power transmitted to the terminal to be switched and the paired terminal is adjusted.
  • the base station can use DTX to save the system.
  • System resources Among them, DTX is divided into uplink DTX and downlink DTX. DTX can reduce the generation of interference by limiting the wireless transmission of useless information, and can be used separately on the uplink or downlink.
  • the downlink DTX is enabled on the network side, at the moment when there is no voice message, the corresponding service burst location of the paired terminal, and the base station sends a silence frame.
  • the FACCH sent to the to-be-switched terminal during this time period can largely avoid the interference of the paired terminal of the VAMOS pair, and therefore, the success rate of switching at this stage is significant. improve.
  • the actual situation is that when the base station initiates the handover instruction, the silent frame of the paired terminal cannot be detected immediately, but the waiting to detect the sending of the silent frame of the paired terminal, and then the FACCH of the terminal to be switched is sent, so that there is a delay. Will increase the time for wireless access. If the delay duration exceeds the radio access timeout timer on the terminal side, the terminal will abandon the handover and cause the handover to fail.
  • a preset duration may be set. If the silence frame sent to the paired terminal can be detected before the preset duration ends, the FACCH of the terminal to be switched is sent at the position of the silence frame of the transmitting pair terminal; If the silent frame sent to the paired terminal is not detected within the preset duration, the terminal is immediately sent to the to-be-switched terminal FACCH when the preset duration ends.
  • FIG. 4 is a schematic flowchart of a method for improving a user's handover success rate according to the second embodiment of the present invention. As shown in FIG. 4, when the downlink DTX is enabled on the network side, the method for improving the user handover access success rate includes the following steps. :
  • Step 401 The base station initiates a handover of the VAMOS user terminal.
  • Step 402 Detect a silence frame sent to the paired terminal, if a silence frame sent to the paired terminal is detected within a preset time, step 403 is performed, otherwise, step 404 is performed;
  • Step 403 Determine to send the to-be-switched terminal FACCH in the position of the silence frame of the transmitting pairing terminal, and proceed to step 405;
  • Step 404 Determine to immediately send the to-be-switched terminal FACCH at the end of the preset duration; and proceed to step 405; Specifically, within a preset duration, if the TCH transmitted by the pairing terminal is immediately encountered in the air interface at the time of transmitting the terminal FACCH, the FACCH transmission is delayed, and the silence frame sent to the pairing terminal is detected, until the transmission is detected. To the silent frame of the pairing terminal, the FACCH is transmitted at the position where the transmitting terminal transmits the silence frame. Otherwise, send FACCH immediately at the end of the preset duration
  • Step 405 Send the to-be-switched terminal FACCH in the inter-transmission terminal FACCH determined according to the 403 or 405, adjust the downlink modulation parameter alpha value, and send the burst position of the to-be-switched terminal FACCH according to the adjustment.
  • the downlink modulation parameter alpha value is such that the power transmitted to the terminal to be switched is greater than the power transmitted to the paired terminal, and the total power of the to-be-switched terminal and the paired terminal transmitted is increased.
  • the total power of the to-be-switched terminal to be transmitted and the paired terminal may be adjusted to be: the total power of the to-be-switched terminal to be transmitted and the paired terminal is adjusted to be the maximum value of the base station transmit power. .
  • the transmitting pairing terminal does not have the transmitting power at the mute frame position, the power transmitted to the to-be-switched terminal may be directly increased.
  • the downlink modulation parameter alpha value is adjusted so that the power transmitted to the to-be-switched terminal is transmitted to the paired terminal.
  • the power is large, and at the same time, the total power transmitted to the to-be-switched terminal and the paired terminal is increased.
  • FIG. 5 is a schematic structural diagram of a BB board according to Embodiment 2 of the present invention.
  • a base station initiates a user handover, it is not detected to be sent to the paired terminal during a preset duration.
  • the to-be-switched terminal FACCH is not sent, and the TCH is still transmitted; when the silence frame sent to the paired terminal is detected, the to-be-switched terminal FACCH is sent to perform user switching.
  • the FACCH will be transmitted by borrowing 20ms of voice or data time.
  • the base station transmits the FACCH through four burst frames, and the F position in FIG.
  • T denotes TCH
  • F denotes FACCH
  • SI denotes a silence frame SID.
  • the embodiment of the invention further provides a device for improving the success rate of the user's switching access.
  • the device includes:
  • the parameter adjustment module 110 is configured to adjust a downlink modulation parameter value when the base station initiates a single-slot adaptive multi-user voice service VAMOS user terminal handover;
  • the power adjustment module 120 is configured to enable the power P1 transmitted to the to-be-switched terminal to be greater than the power P0 transmitted to the paired terminal according to the value of the downlink modulation parameter, and may be configured to send the to-be-cut according to the downlink modulation parameter value.
  • the power P1 transmitted to the to-be-switched terminal by the burst burst location of the terminal fast associated control channel FACCH is greater than the power P0 transmitted to the paired terminal.
  • the specific structure of the parameter adjustment module 110 and the power adjustment module 120 may include a processor and a storage medium; the storage medium may store computer executable instructions; the processor passes through the internal communication interface of the device The storage medium is connected, and by executing the executable instruction, a corresponding function can be implemented.
  • the parameter adjustment module 110 and the power adjustment module 120 may be integrated with corresponding processors and storage media, and may independently correspond to different processors and storage media; when the integration corresponds to the same processor and storage medium Time-sharing or different thread processing can be used to implement the functions of different modules.
  • the processor may include a processing structure such as a central processing unit, a microprocessor, a digital signal processor, and a programmable logic circuit.
  • the device further includes a detection module, a timing module, and a transmission module;
  • the detecting module is configured to detect a silence frame sent to the pairing terminal
  • the timing module is configured to record a duration of detecting a silence frame sent by the pairing terminal, and the sending module is configured to: when the detecting module detects the sending to the pairing terminal within a preset duration When the mute frame of the terminal is sent, the terminal to be switched FACCH is sent at the position of the mute frame of the transmitting terminal; or when the detecting module does not detect the mute frame of the paired terminal within the preset duration, the terminal to be switched FACCH is immediately sent when the preset duration ends.
  • the power control module is configured to implement a function of making P1 greater than P0 and increasing a sum of P1 and P0 by controlling power of the transmitting module to transmit signals.
  • the detection module and the timing module select the time for transmitting the FACCH, and try to avoid the interference of the downlink signal of the paired terminal to the downlink signal of the handover terminal.
  • the device in this embodiment is a method for improving the success rate of user handover access according to the embodiment of the present invention, and provides hardware support, which can be used to implement any technical solution of the method, and the same has been improved.
  • the anti-interference capability of the handover terminal and the probability of successful handover; the device may be used as a part of the base station, or may be a device independent of the base station, and connected to the base station by wire or wirelessly, preferably the device described in this embodiment is Part of the base station.
  • the paired terminal may be a destination pairing terminal when the VAMOS is paired, or may be the original pairing terminal when the VAMOS is paired; the total power of the to-be-switched terminal to be transmitted and the paired terminal is the base station to be transmitted to the to-be-switched terminal. The total power with the paired terminal.
  • the power PI is x dB higher than the power P0 transmitted to the partner terminal.
  • the main purpose of adjusting the alpha value is: to make the terminal to be switched better to interfere with the interference of another user paired terminal in the VAMOS pair; therefore, the power that the power adjustment module transmits to the terminal to be switched should be greater than the power transmitted to the paired terminal. That is, alpha should be greater than zero.
  • the actual capacity of the two terminals participating in the pairing may be quite different, as listed in Table 1. Therefore, the specific implementation can be used for the specific type of terminal and anti-interference requirements, the value of the modulation parameter alpha. Make settings to achieve the best switching results.
  • the power adjustment module 120 adjusts the downlink modulation parameter value to increase the total power transmitted to the to-be-switched terminal and to the paired terminal.
  • the transmit power transmitted by the base station to the to-be-switched terminal and the paired terminal conforms to the downlink modulation parameter alpha.
  • the power adjustment module 120 increases the total power of the transmitted terminal to be switched and the power transmitted to the paired terminal, and may: adjust the total power of the to-be-switched terminal to be transmitted and the paired terminal to The maximum value of the base station transmit power.
  • the device When the network side turns on the downlink DTX, the device further includes a detecting module 130, a timing module 140, and a sending module 150, where
  • the detecting module 130 is configured to detect a silence frame sent to the pairing terminal;
  • the sending module 150 is configured to: when the detecting module 130 detects the silence frame sent to the pairing terminal within a preset duration, send the to-be-switched terminal FACCH in the silent frame position of the transmitting pairing terminal.
  • the timing module 140 is configured to record the duration of detecting the silence frame of the sending pairing terminal.
  • the sending module 130 is further configured to: when the detecting module 130 does not detect the pairing terminal silence frame within the preset duration, The terminal to be switched FACCH is sent immediately after the preset duration ends.
  • the alpha value of the downlink modulation parameter is already the maximum value, and only needs to be sent.
  • the power of the switching terminal can be increased.
  • the downlink modulation is adjusted while the total power transmitted to the to-be-switched terminal and the paired terminal is increased.
  • the alpha value of the parameter is the value of the parameter.
  • the method and device for improving user switching access success rate provided by embodiments of the present invention are involved in The power control method can be performed simultaneously with the downlink power control performed by the 480 ms measurement report in the prior art, and the power adjustment of the burst level is performed at the burst position where the FACCH needs to be transmitted.
  • the embodiment of the present invention further describes a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the method according to any one of the embodiments of the present invention.
  • the computer storage medium may be a storage medium such as a USB flash drive, an optical disk, a DVD or a magnetic tape, preferably a non-transitory storage medium.
  • An embodiment of the present invention further provides an apparatus for implementing the method according to the embodiment of the present invention.
  • the apparatus includes a processor 302, a storage medium 304, and at least one external communication interface 301. 302.
  • the storage medium 304 and the external communication interface 301 are all connected by a bus 303.
  • the processor 302 can be a processing component such as a microprocessor, a central processing unit, a digital signal processor, or a programmable logic array.
  • Computer-executable instructions are stored on the storage medium 304; the processor-executable execution of the computer-executable instructions stored in the storage medium 304 can be used to at least implement the following:
  • the power P1 transmitted to the terminal to be switched is controlled or controlled to be greater than the power P0 transmitted to the pairing terminal.
  • the device may be part of a base station or a device connected to the base station by wire or wirelessly.

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Abstract

本发明公开了一种提高用户切换接入成功率的方法、装置和计算机存储介质，所述方法包括：当基站发起单时隙自适应多用户语音业务VAMOS用户终端切换时，调整下行调制参数值；依据所述下行调制参数值，使发射给待切换终端的功率P1大于发射给配对终端的功率P0。

Description

提高用户切换接入成功率的方法、 装置和计算机存储介质 技术领域
本发明涉及单时隙自适应多用户语音业务（ VAMOS， Voice services over Adaptive Multi-user channels on One Slot ) 中用户切换接入技术， 尤其涉及 一种提高用户切换接入成功率的方法、 装置和计算机存储介质。 背景技术
VAMOS是第三代合作伙伴项目 （ 3GPP， The 3rd Generation Partnership Project ) 确定的全球移动通信系统 （ GSM， Global System for Mobile Communications )针对聚合子层 ( CS， Convergence Sublayer )的演进方案。 VAMOS 的基本原理是在一条信道下同时实现两个用户的语音传输， VAMOS 的下行调制方案为自适应四相相移键控 （ AQPSK， Adaptive Quadrature Phase Shift Keying ), 上行调制方案为两个高斯滤波最小频移键 控（GMSK， Gaussian Filtered Minimum Shift Keying )信号的叠加。 根据终 端的解调能力不同以及对新的训练序列集合的支持与否， 终端分为不支持 VAMOS ( VAMOS not supported Terminal )的传统（ legacy )终端、 VAMOS I终端、 VAMOS II终端； 其中， VAMOS I和 II终端支持新的训练序列码集 合 2 ( TSC Set2, Training Sequence Code Set2 ), 支持移动慢速随路控制信 道（ shifted SACCH, Slow Associated Control Channel ) 的传输等。
目前， GSM系统的在网用户以 legacy终端居多， legacy终端的抗干扰 能力也分几个级别： 无干扰抑制能力的非单天线干扰消除（NON SAIC, Non Single Antenna Interference Cancellation )终端、 以及有干扰 4卬制能力的 单天线干扰消除（ SAIC， Single Antenna Interference Cancellation )终端。 实 际上， 经常有很多终端存在没有上报自己实际物理层能力等级的情况， 因 此， 基站需要对终端的能力进行检测， 最终终端自身的物理层能力以基站 检测的为准。
由于 VAMOS是同时针对两个用户进行语音传输， 所以， 需要对用户 终端进行配对， 目前用于配对的终端类型， 主要考虑如下几种：
NON SAIC终端： 终端上报为 NON SAIC终端， 基站检测最终确定为 NON SAIC, 此类型终端无干扰抑制能力；
MUTE SAIC终端： 终端上报为 NON SAIC终端， 基站检测后确定为 SAIC终端；
单天线干扰消除自动频率控制（ SAIC AFC， Single Antenna Interference Cancellation Automatic Frequency Control )终端： 终端上才艮为 SAIC终端， 基站检测后确定为 SAIC AFC，此类型终端有 SAIC能力但是存在频偏问题； SAIC终端： 终端上报为 SAIC终端， 基站检测后确定为 SAIC终端； VAMOS I终端： 支持训练序列集合 TSC SET2, 不支持物理层的联合 检测；
VAMOS II终端： 支持训练序列集合 TSC SET2， 支持物理层的联合检 测。
配对时考虑的优先级关系， 见表 1所示； 其中， userO和 userl为将要 配对的终端。
配对优先级 UserO Userl
1 SAIC, MUTE SAIC VAMOS I
2 SAIC, MUTE SAIC VAMOS II
3 VAMOS I VAMOS II
4 SAIC, MUTE SAIC SAIC, MUTE SAIC
5 VAMOS I VAMOS I
6 VAMOS II VAMOS II 7 SAIC AFC VAMOS I
8 SAIC AFC VAMOS II
9 SAIC AFC SAIC AFC
10 SAIC AFC SAIC
11 NON SAIC VAMOS II
表 1
现有技术在考虑 VAMOS 的配对和解配对时， 仅考虑了上行和下行在 测量报告级别即 480ms级别的上下行功率控制， 并没有在突发（burst )层 面进行进一步细化的功率控制， 如此， 会造成在下行传输信令时因受到的 干扰比较大， 使得终端对控制信令解码失败， 从而影响切换成功率。 发明内容
有鉴于此， 本发明实施例期望提供一种提高用户切换接入成功率的方 法、 装置和计算机存储介质， 能够有效的解决用户切换过程中由于受到干 扰导致的切换成功率低的问题。
为达到上述目的， 本发明实施例的技术方案是这样实现的：
本发明实施例第一方面提供一种提高用户切换接入成功率的方法， 所 述方法包括：
当基站发起单时隙自适应多用户语音业务 VAMOS用户终端切换时， 调整下行调制参数值；
依据所述下行调制参数值， 使发射给待切换终端的功率 P1大于发射给 配对终端的功率 P0。
优选地，
所述依据所述下行调制参数值， 使发射给待切换终端的功率 P1大于发 射给配对终端的功率 P0为：
依据所述下行调制参数值 使在发送待切终端快速随路控制信道 FACCH的突发 burst位置发射给待切换终端的功率 P1大于发射给配对终端 的功率 P0。
优选地， 当网络侧开启下行不连续发送 DTX时， 所述发送待切终端快 速随路控制信道 FACCH包括：
检测发送给配对终端的静音帧；
当在预设时长内检测到发送给配对终端的静音帧时， 在发送配对终端 的静音帧位置发送所述待切换终端 FACCH， 否则， 在预设时长结束时立即 发送所述待切换终端 FACCH。
优选地，
所述方法还包括：
在满足使发射给待切换终端的功率 P1 大于发射给配对终端的功率 P0 的条件下， 提高发射给待切换终端的功率及发射给配对终端的功率的总功 率。
优选地，
所述配对终端为 VAMOS配对时的目的配对终端， 或为 VAMOS解配 对时的原配对终端。
优选地，
所述调整下行调制参数值为： 调整发射给待切换终端功率与发射给配 对终端功率之间的相对功率分贝差值。
本发明实施例第二方面提供一种提高用户切换接入成功率的装置， 所 述装置包括调整模块及控制模块， 其中，
所述参数调整模块， 配置为当基站发起单时隙自适应多用户语音业务 VAMOS用户终端切换时， 调整下行调制参数值；
所述功率调整模块， 配置为依据所述下行调制参数值， 使发射给待切 换终端的功率 P1大于发射给配对终端的功率 P0。 优选地，
所述功率调整模块， 配置为依据所述下行调制参数值 使在发送待切终 端快速随路控制信道 FACCH的突发 burst位置发射给待切换终端的功率 P1 大于发射给配对终端的功率 P0。
优选地，
所述装置还包括检测模块、 计时模块及发送模块； 其中，
所述检测模块， 配置为检测发送给配对终端的静音帧；
所述计时模块， 配置为记录检测发送配对终端的静音帧的时长； 发送模块， 配置为当检测模块在预设时长内检测到发送给配对终端的 静音帧时， 在发送配对终端的静音帧位置发送所述待切换终端 FACCH; 或 者当检测模块在预设时长内未检测到配对终端静音帧时， 在预设时长结束 时立即发送所述待切换终端 FACCH。
优选地，
所述功率调整模块， 还配置为在满足使发射给待切换终端的功率 P1大 于发射给配对终端的功率 P0的条件下， 提高发射给待切换终端的功率及发 射给配对终端的功率的总功率。
优选地，
所述参数调整模块， 配置为调整发射给待切换终端功率与发射给配对 终端功率之间的相对功率分贝差值。
本发明实施例第三方面提供一种计算机存储介质， 所述计算机存储介 质中存储有计算机可执行指令， 所述计算机可执行指令用于执行本发明实 施例第一方面任一项所述的方法。
本发明实施例提供的提高用户切换接入成功率的方法、 装置及计算机 存储介质， 通过调整下行调制参数值， 进而控制发射给待切换终端的功率 与发射给配对终端的功率， 能减小发射给配对终端的功率对待切换终端的 干扰； 如此， 能提升待切换终端对外界噪声的抗干扰能力。 本发明实施例 的功率控制与现有技术中 480ms测量报告层面的下行功率控制同时进行， 因此， 能提高终端切换的接入成功率， 提升用户的通话感受。 附图说明
图 1为当前业务信道测量 4艮告周期结构示意图；
图 la 为发明实施例所述的提高用户切换接入成功率的方法流程示意 图；
图 2 为本发明实施例一所述的提高用户切换接入成功率的方法流程示 意图；
图 3为本发明实施例一所述的基带单板结构示意图；
图 4 为本发明实施例二所述的提高用户切换接入成功率的方法流程示 意图；
图 5为本发明实施例二所述的基带单板结构示意图；
图 5a为本发明实施例二所述的提高用户切换接入成功率的装置结构示 意图之一；
图 6 为本发明实施例所述的提高用户切换接入成功率的装置结构示意 图之二；
图 7 为本发明实施例所述的提高用户切换接入成功率的装置结构示意 图之三。
具体实施方式
以下结合附图对本发明的优选实施例进行详细说明， 应当理解， 以下 所说明的优选实施例仅用于说明和解释本发明， 并不用于限定本发明。
如图 la所示， 本发明实施例所述的提高用户切换接入成功率的方法主 包括：
步骤 101： 当基站发起单时隙自适应多用户语音业务 VAMOS用户终端 切换时， 调整下行调制参数值；
步骤 102: 依据所述下行调制参数值， 使发射给待切换终端的功率 P1 大于发射给配对终端的功率 P0。
通过所述下行调制参数值的调整， 控制基站发射给待切换终端的下行 功率高于发射给配对终端的下行功率， 能够緩解配对终端的下行信号对待 切换终端的下行信号的干扰， 提高了发射给待切换终端的下行信号的抗干 扰能力， 进而能提高待切换终端依据接收到的下行信号的成功切换率。
在终端切换的具体哪个时间或无线帧的具体哪个位置调整下行调制参 数值， 使发射给待切换终端的下行功率大于发射给配对终端的发射功率， 以能使待切换终端成功切换的同时， 能尽量减少对配对终端及其他终端的 通信影响； 为解决该问题， 本发明实施例对功率调整做了以下进一步的改 进： 具体为：
当基站发起 VAMOS用户终端切换时， 依据下行调制参数值； 使在发 送待切终端快速随路控制信道 FACCH的突发 burst位置发射给待切换终端 的功率 P1大于发射给配对终端的功率 P0。
逻辑信道分为两大类—业务信道（TCH， Traffic Channel )和控制信道 ( CCH, Control Channel ), 其中， 业务信道用于传送编码后的话音或客户 数据， 在上行和下行信道上， 点对点方式传播； 控制信道用于传送信令或 同步数据。
所述 burst也包括业务 burst和控制 burst;所述业务 burst为发生在业务 信道的突发；所述控制 burst为发生在控制信道的 burst。所述 FACCH的 burst 位置可理解为 FACCH的突发位置。 所述 FACCH 为快速随路控制信道，是 Fast Associated Control Channel的缩写； 在业务道中需要传输信令消息时， 可以临时借用一个 TCH时隙用作所述 FACCH， 这种情况在切换时发生， 是通过借用 20ms的话音或数据时间来传送信令， 这种情况被称为偷帧。
下面以业务信道为例， 对业务 burst进行说明。 图 1为当前业务信道测 量报告周期结构示意图， 如图 1所示， 在 TCH中， 一个测量报告周期时长 480ms, 一个测量^艮告中包含四个复帧， 每个复帧时长 120ms， 每个复帧中 包含 26个业务 burst。 当切换发生时， 即产生偷帧时， 如图 1所示， 将复帧 1中的前四个 burst偷帧成 FACCH， 从终端的角度来说， 在进行切换时， 基 站通过四个 burst偷帧发送 FACCH; 图 1中， F表示 FACCH， T表示 TCH。
本发明实施例从 burst层面出发， 考虑在切换发起时， 在 burst层面进 行功率控制。 发生切换的场景包括以下两种情况：
场景 1 : 由于 VAMOS是两个用户在同一条信道上进行语音业务， 以 userl和 userO为例， userl为待切换终端， userO为即将配对的目的配对终 端，当切换发起时，通常的做法是通过小区内切换将用户 userl切换到 userO 的无线信道上， 使得 userl和 userO形成一个 VAMOS对（ pair ); 在切换的 过程中， 对于待切换的用户 userl , 必然有控制面信令小区内切换的下发， 而这个信令的传输是要遭受到用户 userO的数据干扰的，这一干扰有可能是 控制信令， 也有可能是语音。 如果 userl发射的功率过低， 或者不进行一些 功率方面的考虑， 则 userl会无法解码网络侧下发的信令， 造成配对失败。
场景 2: 对于已经形成的 VAMOS pair, 由于两个用户的移动或者外界 无线环境的改变， 目前的配对关系从无线传输的要求来看， 已经不适合维 持这个配对关系了， 因此， 网络需要将配对关系解除。 这里， 仍然以 userl 和 userO为例， userl为待切换终端， userO为解配对时的原配对终端， 通常 的做法是将 userl通过切换操作切换到一条新的无线条件比较好的信道上， 对于待切换的用户 userl , 必然有控制面信令小区内切换的下发， 这个信令 的传输是要遭受到用户 userO的数据干扰的， 这一干扰有可能是控制信令， 也有可能是语音， 如果 userl发射的功率过低， 或者不进行一些功率方面的 考虑， 则 userl会无法解码网络侧下发的信令， 造成切换失败。
此外， 为了避免在发射给待切换终端的功率与发射给配对终端的功率 的总功率不变的情况下， 导致发射给配对终端的功率过小， 导致影响配对 终端的通信， 或者发射给待切换终端的功率依旧过小， 本发明实施例还包 括： 在满足发射给待切换终端的功率 P1大于发射给配对终端的功率 P0的 条件下， 提高发射给待切换终端的功率及发射给配对终端功率的总功率， 具体为提高 P1与 P0的和。 具体的如何实现， 同样的可是通过调整下行调 制参数值， 依据下行调制参数值来实现 P1和 P0总功率的和。 本实施例优 选为提高使在发送待切终端快速随路控制信道 FACCH的突发 burst位置 P1 和 P0的和。
下面结合附图及具体实施例， 对本发明实施例技术方案的实施作进一 步的详细描述。
图 2 为本发明实施例一提高用户切换接入成功率的方法流程示意图， 如图 2所示， 本实施例提高用户切换接入成功率的方法， 包括以下步骤： 步骤 201 : 基站发起 VAMOS用户终端切换；
步骤 202: 调整下行调制参数值，使在发送待切换终端 FACCH的 burst 位置发射给待切换终端的功率 P1大于发射给配对终端的功率 P0，且同时调 高发射给待切换终端与配对终端的总功率。
其中， 所述配对终端可以为 VAMOS 配对时的目的配对终端， 也可以 为 VAMOS解配对时的原配对终端。
所述下行调制参数， 可以用 alpha表示， 为调整发射给待切换终端与配 对终端的相对功率分贝差值， 例如： alpha=x的意思是发射给待切换终端的 功率 P1比发射给配对终端的功率 P0高 x dB， 调整 alpha值的主要目的是： 为了使待切换终端更好的抵抗 VAMOS pair中另一个用户配对终端的干扰， 因此， 发射给待切换终端的功率应该大于配对终端的功率， 即 alpha应该大 于零， 例如， 设置 alpha=2， 即发射给待切换终端的功率 P1 比配对终端的 功率 P0高 2 dB; 增加总功率 P的主要目的是： 为了提升待切换终端对外界 的噪声和干扰的抑制。
实际参与配对的两个终端， 其物理层的能力可能会有比较大的差异， 如表 1中所列， 因此， 具体实施时可以针对具体类型的终端和抗干扰要求， 对调制参数 alpha的值进行设定， 以达到最佳切换效果。
所述调整下行调制参数值， 同时将待发射的待切换终端与配对终端的 总功率调调高具体为： 在基站发射给待切换终端与配对终端的功率符合下 行调制参数 alpha要求的功率分贝差值的情况下，将发射给待切换终端和配 对终端的总功率调高。 例如， 当 alpha=2 时， 在发射给待切换终端的功率 P1比配对终端的功率 P0高 2 dB的情况下， 将发射给待切换终端和配对终 端的总功率调高。
优选的， 为了达到最佳效果， 所述将待发射的待切换终端与配对终端 的总功率调调高可以为： 将待发射的待切换终端与配对终端的总功率调整 为基站发射功率的最大值。
待切换终端发送 FACCH的 burst位置如图 3所示， 图 3为本发明实施 例一基带 （BB， Baseband )单板结构示意图， 当基站发起用户切换时， 在 一个复帧中， 将借用 20ms的话音或数据时间来发送 FACCH， 图 3所示， 在进行切换时， 基站通过四个 burst偷帧发送 FACCH， 图 3中 F位置即为 业务 burst发送 FACCH的位置； 相应的， 在图 3中的每个 F的位置， 调整 下行调制参数 alpha值， 同时将发射给待切换终端与配对终端的总功率调 高。
由于移动用户在整个通话过程中， 平均仅有 40 %的时间用于通话， 其 他大部分时间并没有传递话音消息。 因此， 基站可以釆用 DTX， 以节约系 统资源； 其中， DTX分为上行 DTX和下行 DTX。 DTX通过限制无用信息 的无线发送， 减少干扰的产生， 可以在上行或下行分别单独使用。 网络侧 开启下行 DTX时， 在没有话音消息的时刻， 配对终端相应的业务 burst位 置， 基站发送的是静音帧。
由于发送配对终端静音帧有发射功率， 那么， 在这一时间段发送给待 切换终端 FACCH可以最大程度的躱避 VAMOS pair的配对终端的干扰， 因 此， 在这一阶段发生切换的成功率会显著提高。 但实际情况是在基站发起 切换指令时， 并不能立即检测到配对终端的静音帧， 而是需要等待检测到 发送配对终端静音帧的时候， 再发送待切换终端 FACCH, 这样就会有一个 延迟产生， 会增加无线接入的时间。 如果这一延迟时长超过终端侧的无线 接入超时定时器， 则终端会放弃本次切换， 造成切换失败。 为了防止此类 情况的发生， 可以设置一个预设时长， 如果在预设时长结束之前， 能够检 测到发送给配对终端的静音帧， 则在发送配对终端的静音帧位置发送待切 换终端的 FACCH; 如果在预设时长内一直未检测到发送给配对终端的静音 帧， 则在预设时长结束之时， 立即发送给待切换终端 FACCH。
图 4 为本发明实施例二提高用户切换接入成功率的方法流程示意图， 如图 4所示， 当网络侧开启下行 DTX时， 本实施例提高用户切换接入成功 率的方法， 包括以下步骤：
步骤 401 : 基站发起 VAMOS用户终端切换；
步骤 402: 检测发送给配对终端的静音帧， 如果在预设时间内检测到发 送给配对终端的静音帧， 则执行步骤 403， 否则， 执行步骤 404;
步骤 403:确定在发送配对终端的静音帧位置发送待切换终端 FACCH, 并进入步骤 405;
步骤 404: 确定在预设时长结束时立即发送待切换终端 FACCH; 并进 入步骤 405; 具体的， 在预设时长内， 如果发送在待切换终端 FACCH的时刻， 立即 在空口遇到配对终端发射的 TCH， 则延迟 FACCH的发射， 等待检测发送 给配对终端的静音帧， 直到检测到发送给配对终端的静音帧， 在发送配对 终端的发射静音帧的位置发射 FACCH。 否则， 在预设时长结束时， 立即发 送 FACCH
步骤 405: 在依据所述 403或 405确定的发送所述待切换终端 FACCH 的间内发送所述待切换终端 FACCH， 调整下行调制参数 alpha值， 并在发 送待切换终端 FACCH的 burst位置， 依据调整下行调制参数 alpha值， 使 发送给待切换终端的功率大于发射给配对终端的功率， 并调高发射给的待 切换终端和配对终端的总功率。
优选的， 为了达到最佳效果， 所述将待发射的待切换终端与配对终端 的总功率调调高可以为： 将待发射的待切换终端与配对终端的总功率调整 为基站发射功率的最大值。
其中， 当发送待切换终端 FACCH 的位置为发送配对终端静音帧位置 时， 由于发送配对终端在静音帧位置没有发射功率， 因此， 直接将发射给 待切换终端的功率调高即可。
当发送待切换终端 FACCH的位置为预设时长结束时，由于发射给配对 终端发射功率仍然会对切换产生干扰，则调整下行调制参数 alpha值使发射 给待切换终端的功率比发射给配对终端的功率大， 且同时将发射给待切换 终端与配对终端的总功率调高。
发送待切换终端 FACCH的 burst位置如图 5所示， 图 5为本发明实施 例二 BB单板结构示意图， 当基站发起用户切换时， 在预设时长内， 在未检 测到发送给配对终端静音帧时， 不发送待切换终端 FACCH, 仍然继续发送 TCH; 当检测到发送给配对终端的静音帧时， 发送待切换终端 FACCH, 执 行用户切换。在一个复帧中，将借用 20ms的话音或数据时间来传送 FACCH, 图 5中， 在进行切换时， 基站通过四个 burst偷帧发送 FACCH， 图 5中 F 位置即为业务 burst发送 FACCH的位置。 相应的， 在图 5中的每个 F的位 置， 调整下行调制参数 alpha值， 同时将待切换终端与配对终端的总功率调 高。 图 5中， T表示 TCH， F表示 FACCH， SI表示静音帧 SID。
本发明实施例还提供一种提高用户切换接入成功率的装置， 如图 5a所 示， 所述装置包括：
所述参数调整模块 110，配置为当基站发起单时隙自适应多用户语音业 务 VAMOS用户终端切换时， 调整下行调制参数值；
所述功率调整模块 120， 配置为依据所述下行调制参数值，使发射给待 切换终端的功率 P1大于发射给配对终端的功率 P0;具体可为依据所述下行 调制参数值 使在发送待切终端快速随路控制信道 FACCH的突发 burst位置 发射给待切换终端的功率 P1大于发射给配对终端的功率 P0。
所述参数调整模块 110及所述功率调整模块 120的具体结构都可包括 处理器及存储介质； 所述存储介质上都可存储有计算机可执行指令； 所述 处理器通过装置内部通信接口与所述存储介质相连， 通过执行所述可执行 指令， 能实现对应的功能。 在具体的实现过程中， 所述参数调整模块 110 及功率调整模块 120可集成对应相同的处理器及存储介质， 可以独立对应 不同的处理器及存储介质； 当集成对应于同一处理器及存储介质时， 可以 釆用分时处理或不同线程处理来实现不同模块的功能。 所述处理器可包括 中央处理器、 微处理器、 数字信号处理器及可编程逻辑电路等具有处理功 能的结构。
所述装置还包括检测模块、 计时模块及发送模块；
所述检测模块， 配置为检测发送给配对终端的静音帧；
所述计时模块， 配置为记录检测发送配对终端的静音帧的时长； 所述发送模块， 配置为当检测模块在预设时长内检测到发送给配对终 端的静音帧时， 在发送配对终端的静音帧位置发送待切换终端 FACCH; 或 者当检测模块在预设时长内未检测到配对终端静音帧时， 在预设时长结束 时立即发送待切换终端 FACCH。 所述功率控制模块， 配置为通过控制所述 发送模块发射信号的功率来实现使 P1大于 P0及增大 P1和 P0的和的功能。
本实施例通过检测模块、计时模块选择发送 FACCH的时间，尽量的避 开配对终端的下行信号对待切换终端的下行信号的干扰。
综合上述， 本实施例所述的装置为本发明实施例所述的提高用户切换 接入成功率的方法， 提供了硬件支持， 可用来实施所述方法的任一技术方 案， 同样的具有提高待切换终端的抗干扰能力及成功切换的几率； 所述装 置可作为基站的一部分， 也可以是一个独立于基站的设备， 通过有线或无 线方式与基站连接， 优选为本实施例所述的装置为基站的一部分。
其中， 所述配对终端可以为 VAMOS 配对时的目的配对终端， 也可以 为 VAMOS解配对时的原配对终端； 所述待发射的待切换终端与配对终端 的总功率就是基站要发射给待切换终端与配对终端的总功率。
所述参数调整模块 110调整所述下行调制参数包括： 调整发射给待切 换终端功率与发射给配对终端功率之间的相对功率分贝差值，例如： alpha=x 的意思是发射给待切换终端的功率 PI比发射给配对终端的功率 P0高 x dB。 调整 alpha值的主要目的是： 为了使待切换终端更好的抵抗 VAMOS pair中 另一个用户配对终端的干扰； 因此， 功率调整模块将时发射给待切换终端 的功率应该大于发射给配对终端的功率， 即 alpha应该大于零， 例如， 设置 alpha=2, 即发射给待切换终端的功率 P1比发射给配对终端的功率 P0高 2 dB。
实际参与配对的两个终端， 其物理层的能力可能会有比较大的差异， 如表 1中所列， 因此， 具体实施时可以针对具体类型的终端和抗干扰要求， 对调制参数 alpha的值进行设定， 以达到最佳切换效果。 所述功率调整模块 120，依据调整下行调制参数值， 调高发射给待切换 终端与发射给配对终端的总功率可为： 在基站发射给待切换终端与配对终 端的发射功率符合下行调制参数 alpha要求的功率分贝差值的情况下，将发 射给待切换终端功率和发射给配对终端功率的总功率调高。例如，当 alpha=2 时， 在发射给待切换终端的功率 P1比发射给配对终端的功率 P0高 2 dB的 情况下， 将发射给待切换终端和配对终端的总功率调高。
优选的， 为了达到最佳效果， 所述功率调整模块 120调高发射的待切 换终端功率与发射给配对终端功率的总功率可以为： 将待发射的待切换终 端与配对终端的总功率调整为基站发射功率的最大值。
当网络侧开启下行 DTX时， 所述装置还包括检测模块 130、 计时模块 140及发送模块 150， 其中，
所述检测模块 130， 配置为检测发送给配对终端的静音帧；
相应的， 所述发送模块 150， 配置为当检测模块 130在预设时长内检测 到发送给配对终端的静音帧时， 在发送配对终端的静音帧位置发送待切换 终端 FACCH。
所述计时模块 140， 配置为记录检测发送配对终端的静音帧的时长； 相应的， 所述发送模块 130，还配置为当检测模块 130在预设时长内未 检测到配对终端静音帧时，在预设时长结束时立即发送待切换终端 FACCH。
其中， 当发送待切换终端 FACCH 的位置为发送配对终端静音帧位置 时， 由于发送配对终端在静音帧位置没有发射功率， 因此， 所述下行调制 参数 alpha值已经为最大值， 只需将发送待切换终端的功率调高即可。
当发送待切换终端 FACCH的位置为预设时长结束时，由于发送配对终 端发射功率仍然会对切换产生干扰， 则在将发送给待切换终端与配对终端 的总功率调高的同时， 调整下行调制参数 alpha值。
本发明实施例提供的提高用户切换接入成功率的方法和装置所涉及的 功率控制方法， 可以与现有技术中 480ms测量报告进行的下行功率控制同 时进行， 在需要传输 FACCH的 burst位置进行 burst层面的功率调整。
本发明实施例还记载了计算机存储介质， 所述计算机存储介质中存储 有计算机可执行指令， 所述计算机可执行指令用于执行本发明实施例中任 一技术方案所述的方法， 具体的如图 la、 图 2或图 4中任一所述的方法。 所述计算机存储介质可为 U盘、 光盘、 DVD或磁带等存储介质， 优选为非 瞬间存储介质。
本发明实施例还提供了一个用于实现本发明实施例所述方法的装置， 如图 7所示， 所述装置包括处理器 302、存储介质 304以及至少一个外部通 信接口 301 ; 所述处理器 302、 存储介质 304以及外部通信接口 301均通过 总线 303连接。 所述处理器 302可为微处理器、 中央处理器、 数字信号处 理器或可编程逻辑阵列等具有处理功能的电子元器件。
所述存储介质 304上存储有计算机可执行指令； 所述处理器 302执行 所述存储介质 304 中存储的所述计算机可执行指令可用于至少实现以下方 案：
当基站发起单时隙自适应多用户语音业务 VAMOS用户终端切换时， 调整下行调制参数值；
依据所述下行调制参数值， 使或控制发射给待切换终端的功率 P1大于 发射给配对终端的功率 P0。
在具体的实现过程中， 所述装置可为基站中的一部分， 或与基站通过 有线或无线方式连接并的装置。
以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明的保 护范围。 凡按照本发明原理所作的修改， 都应当理解为落入本发明的保护 范围。

Claims

权利要求书
1、 一种提高用户切换接入成功率的方法， 所述方法包括：
当基站发起单时隙自适应多用户语音业务 VAMOS用户终端切换时， 调整下行调制参数值；
依据所述下行调制参数值， 使发射给待切换终端的功率 P1大于发射给 配对终端的功率 P0。
2、 根据权利要求 1中所述的方法， 其中，
所述依据所述下行调制参数值， 使发射给待切换终端的功率 P1大于发 射给配对终端的功率 P0为：
依据所述下行调制参数值， 使在发送待切终端快速随路控制信道 FACCH的突发 burst位置发射给待切换终端的功率 P1大于发射给配对终端 的功率 P0。
3、 根据权利要求 2 所述方法， 其中， 当网络侧开启下行不连续发送 DTX时， 所述发送待切终端快速随路控制信道 FACCH包括：
检测发送给配对终端的静音帧；
当在预设时长内检测到发送给配对终端的静音帧时， 在发送配对终端 的静音帧位置发送所述待切换终端 FACCH， 否则， 在预设时长结束时立即 发送所述待切换终端 FACCH。
4、 根据权利要求 1、 2或 3所述的方法， 其中， 所述方法还包括： 在满足使发射给待切换终端的功率 P1 大于发射给配对终端的功率 P0 的条件下， 提高发射给待切换终端的功率及发射给配对终端的功率的总功 率。
5、 根据权利要求 1、 2或 3所述方法， 其中， 所述配对终端为 VAMOS 配对时的目的配对终端， 或为 VAMOS解配对时的原配对终端。
6、 根据权利要求 1、 2或 3所述方法， 其中， 所述调整下行调制参数 值为： 调整待发射的待切换终端与配对终端之间的相对功率分贝差值。
7、 一种提高用户切换接入成功率的装置， 所述装置包括调整模块及控 制模块， 其中，
所述参数调整模块， 配置为当基站发起单时隙自适应多用户语音业务 VAMOS用户终端切换时， 调整下行调制参数值；
所述功率调整模块， 配置为依据所述下行调制参数值， 使发射给待切 换终端的功率 P1大于发射给配对终端的功率 P0。
8、 根据权利要求 7所述的装置， 其中， 所述功率调整模块， 配置为依 据所述下行调制参数值 使在发送待切终端快速随路控制信道 FACCH的突 发 burst位置发射给待切换终端的功率 P1大于发射给配对终端的功率 P0。
9、 根据权利要求 8所述装置， 其中， 所述装置还包括检测模块、 计时 模块及发送模块； 其中，
所述检测模块， 配置为检测发送给配对终端的静音帧；
所述计时模块， 配置为记录检测发送配对终端的静音帧的时长； 发送模块， 配置为当检测模块在预设时长内检测到发送给配对终端的 静音帧时， 在发送配对终端的静音帧位置发送所述待切换终端 FACCH; 或 者当检测模块在预设时长内未检测到配对终端静音帧时， 在预设时长结束 时立即发送所述待切换终端 FACCH。
10、 根据权利要求 7、 8或 9所述的装置， 其中，
所述功率调整模块， 还配置为在满足使发射给待切换终端的功率 P1大 于发射给配对终端的功率 P0的条件下， 提高发射给待切换终端的功率及发 射给配对终端的功率的总功率。
11、 根据权利要求 7、 8或 9所述装置， 其中， 所述参数调整模块， 配 置为调整给发射的待切换终端功率与发射给配对终端功率之间的相对功率 分贝差值。
12、 一种计算机存储介质， 所述计算机存储介质中存储有计算机可执 行指令， 所述计算机可执行指令用于执行权利要求 1至 6任一项所述的方 法。
PCT/CN2014/079246 2013-10-25 2014-06-05 提高用户切换接入成功率的方法、装置和计算机存储介质 WO2014180424A1 (zh)

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