WO2009121309A1

WO2009121309A1 - A method and apparatus for multiplexing multiple users into the same time slot

Info

Publication number: WO2009121309A1
Application number: PCT/CN2009/071156
Authority: WO
Inventors: 梅竞晋; 谭斌
Original assignee: 华为技术有限公司
Priority date: 2008-04-03
Filing date: 2009-04-03
Publication date: 2009-10-08
Also published as: CN101553030B; CN101553030A

Abstract

A method and apparatus for multiplexing multiple users into the same time slot are provided, the method includes: obtaining at least one measure parameter of the candidate multiplex terminal; if the obtained measure parameter meets the preset radio environment condition, the multiplexing operation is performed to the candidate multiplex terminal. In the embodiments of the present invention, the affect to the user service caused by the improper multiplexing can be avoided, and the radio performance can be enhanced, the users’ feeling can be improved while multiplexing multiple users into the same time slot, at the same time, it provides conditions for the more effective power control. The frequency spectrum efficiency can be enhanced; the hardware and the frequency spectrum source can be utilized more effectively.

Description

Method and device for multiplexing multiple users to the same time slot. The present application claims to be submitted to the Chinese Patent Office on April 3, 2008, the application number is 200810089725.7, and the invention name is "a method and device for multiplexing multiple users in the same time slot". The priority of the Chinese Patent Application, the entire contents of which is incorporated herein by reference. Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and device for multiplexing multiple users to the same time slot. Background technique

The traditional voice is a time slot allocated to a user. Generally, when the existing circuit switching (CS) service is established, the network first assigns a separate dedicated control channel to the mobile station (Mobile Station, hereinafter referred to as MS). -alone Dedicated Control Channel (hereinafter referred to as SDCCH), the signaling transmission needs to be about 1 - 2S, and the measurement report can be reported on the Slow Associated Control Channel (SACCH) for 480ms, so the network will receive 2 - A measurement report reported by the three mobile stations, and then a traffic channel (Traffic Channel, hereinafter referred to as TCH) is allocated to the mobile station according to the measurement report to perform the service.

The uplink period of the SDCCH is 102 time division multiple access (Time Division Multiple)

Access, hereinafter referred to as: TDMA) frame, when the MS is on the SDCCH, in each SDCCH cycle, the link quality will be evaluated and the measurement report will be reported, including: Received signal level of the six strongest cells (hereinafter referred to as Received signal level, hereinafter referred to as : RXLEV ) value, 8 SDCCH and 4 SACCH frames for a total of 12 frames of RXLEV and Received signal quality (RXQUAL).

At the same time, there is a delay in the transmission of the signal, such as the mobile station moving away from the base station during the call. When the direction moves, the signal sent from the base station will arrive at the mobile station more and more late. At the same time, the signal of the mobile station will arrive at the base station more and more late. If the delay is too long, the mobile station received by the base station will be The signal on the time slot overlaps with the time slot of the base station receiving another mobile station signal, causing inter-symbol interference. Therefore, during the call progress, the measurement report header sent by the mobile station to the base station carries the delay measured by the mobile station. The value, and the base station must monitor the time when the call arrives, and send an instruction to the mobile station on the downlink channel at a frequency of 480 ms-time to indicate the time when the mobile station sends in advance. This time is the timing advance ( Timing Advance, hereinafter referred to as TA ), the value of TA is 0~63 (0~233 s).

In the prior art, in order to increase the voice capacity, that is, to carry more voices on the same resource, multiple times can be multiplexed on one time slot and the Absolute Radio Frequency Channel Number (ARFCN). Users can obtain more capacity on a fixed carrier frequency and spectrum. For example, the Multi-User Reuse One Slot (hereinafter referred to as MUROS) shown in Figure 1 can provide two subchannels. Both MSs work on the same radio resource. Each MS occupies one subchannel, and the subchannels are distinguished by orthogonal or nearly orthogonal training sequences. For the traditional CS voice service, each burst (Burst) is allocated to one user, and Gaussian Minimum Shift-frequency Keying (GMSK) modulation is used for both uplink and downlink; The base station transmits two GMSK signals to generate Quadrature Phase Shift Keying (QPSK) signals, and the mobile station transmits signals that are not their own through mutually orthogonal training sequences and enhanced interference cancellation techniques. , as an interference signal to cancel, so as to solve one of their own signals; in the uplink, the two multiplexed MSs still use GMSK modulation to transmit in the same time slot, and the base station uses continuous interference cancellation (hereinafter referred to as: SIC) or Joint Detection (JD) demodulates two multiplexed signals and distinguishes two MSs by different Training Sequence Codes (TCCs).

To illustrate how two terminals multiplex the same frequency point and time slot, as shown in Figure 2, When ARFCN is 160, on time slot 3, the base station sends two signals when downlink, and uses training sequence 0 and training sequence 5 respectively. MS 1 and MS 2 distinguish their own signals through the training sequence. When uplink, MS 1 and MS 2 Each node sends its own signal to the base station. The base station distinguishes it by the training sequence. As shown by the solid line in Figure 2, for signals that are not their own, the MS will process it as interference, as shown by the dotted line in Figure 2. In the prior art, two mobile stations multiplex one channel. If the wireless environments of the two mobile stations differ greatly, the multiplexing may be quickly removed, affecting the performance of the entire system. Summary of the invention

The embodiment of the invention provides a method and a device for multiplexing multiple users to the same time slot. The network can determine the wireless environment of the mobile station according to the relevant information such as the measurement report or the time offset value, and preferentially pair the mobile stations with similar wireless environments. Reuse.

An embodiment of the present invention provides a method for multiplexing a same time slot by multiple users, including: acquiring measurement parameters of at least one candidate multiplexing terminal;

If the obtained measurement parameter satisfies a preset wireless environment condition, the candidate multiplexing terminal is multiplexed.

An embodiment of the present invention provides a device for multiplexing a same time slot by a multiple user, including: a measurement parameter acquiring unit, configured to acquire measurement parameters of at least one candidate multiplexing terminal; and a determining unit, configured to acquire according to the measurement parameter The measurement parameters acquired by the unit determine whether the two candidate multiplexing terminals, or one candidate multiplexing terminal, and another terminal that is performing the service determine whether the measurement parameter meets the preset condition;

And a multiplexing unit, configured to: when the determining unit determines that the measurement parameter meets the preset condition, multiplex the two candidate multiplex terminals, or one candidate multiplex terminal, with another terminal that is in service to the same time slot.

An embodiment of the present invention provides a device for multiplexing multiple users in the same time slot, including: The obtaining module is configured to obtain the measurement parameter of the at least one candidate multiplexing terminal, and the multiplexing module is configured to perform the multiplexing operation on the candidate multiplexing terminal when the measurement parameter acquired by the acquiring module meets the preset wireless environment condition.

In the embodiment of the present invention, the impact on the user service due to improper multiplexing can be avoided, the wireless performance can be improved, the feeling of enhancing the multi-user multiplexing of the same time slot user can be improved, and conditions for more effective power control are provided. And improve spectrum efficiency, more efficient use of hardware and frequency resources. DRAWINGS

1 is a schematic structural view of a MUROS in the prior art;

2 is a schematic diagram of multiplexing two terminals of the same frequency point and time slot in the prior art;

3 is a flow chart of an embodiment of a method for multiplexing multiple users to the same time slot according to the present invention; FIG. 4 is a flow chart of another embodiment of a method for multiplexing multiple users to the same time slot according to the present invention; FIG. FIG. 6 is a schematic structural diagram of an embodiment of a device for multiplexing multiple users in the same time slot according to the present invention; FIG. 7 is a schematic diagram of a device for multiplexing multiple users in the same time slot according to the present invention; A schematic structural view of another embodiment. detailed description

In an embodiment of the method for multiplexing multiple users to the same time slot, the measurement report is used as a judgment basis to process the initial multiplexing of the two terminals. The specific process is shown in Figure 3, including the following steps:

Step 301: When the CS service is established, the network side device (for example, the base station controller) allocates the SDCCH channel to the MS.

Step 302: The network side device receives the measurement report reported by the MS, for example, using the SDCCH for reporting. Wherein, the measurement report is not limited to the measurement report on the SDCCH, and may be the network side The measurement report of some or some frequency points specified by the device (such as the current frequency point and the surrounding frequency point) may also be the measurement report of the TCH channel to be allocated. Before the measurement report is reported, the network side device specifically sends an indication to the terminal, indicating that the terminal performs measurement on a specific item;

Step 303: The network side device compares the measurement reports reported by multiple MSs.

Step 304: The MS that meets the preset condition (for example, the wireless environment is similar)

(such as RXLEV-VAL, MEAN-BEP, RXQUAL-FULL and other parameters are similar) It is preferred to multiplex to the same traffic channel TCH. It is recommended to set the threshold to 40%. The threshold value may be set according to the ratio of the difference between the same measurement parameter and the reference value in the measurement report, and the reference value may be, for example, the largest measurement parameter of the same measurement parameter, or may be the same measurement parameter. The average value can also be any one of the same measurement parameters. The threshold can also be set according to the ratio of the same measurement parameter in the measurement report. It is preferred to multiplex when the difference between the same measurement parameter in the measurement reports of the two MSs and the larger one of the measurement parameters is less than a preset threshold. At the same time, if, due to some sudden cause, the wireless environment of the terminal to be multiplexed is determined to be large according to the measurement report parameter, the threshold may be set, for example, the difference between the same measurement parameter in the measurement report of the two MSs and the species When the ratio of the larger measurement parameters in the measurement parameters is greater than the threshold of 60%, the network side device stops the terminal multiplexing. The preset threshold may also be set according to the difference of the same measurement parameter in the measurement report. The setting of the threshold is only exemplary, and any threshold that compares the same measurement parameter value to the similarity degree may be compared. All are within the protection scope of the present invention. The preset thresholds mentioned in the embodiments of the present invention may also be applied to other embodiments, and are not described again.

Another embodiment of the method for multi-user multiplexing the same time slot of the present invention processes a terminal and another terminal in progress. The specific process is as shown in FIG. 4, and includes the following steps: Step 401: When a CS service that is added to the multiplexed MS is established to initiate a new service, the network side device allocates an SDCCH channel to the MS.

Step 402: The network side device receives the measurement report reported by the MS, for example, using the SDCCH to report the measurement report. Among them, the measurement report can be not only the measurement report on the SDCCH, It may also be a measurement report of some or some frequency points specified by the network (such as the current frequency point and the surrounding frequency point), or may be a measurement report of the TCH channel to be allocated, and the network also receives the ongoing service terminal. Measurement report on the TCH;

Step 403: The network side device compares the measurement report with the measurement report reported by multiple MSs that are in the service;

Step 404: The network side device compares the candidate multiplexing terminal whose measurement parameter meets the preset condition (for example, the wireless environment is the closest) to the terminal that is performing the service (such as RXLEV-VAL, ME AN-BEP, RXQUAL-FULL, etc.) Preferably, the same traffic channel TCH is multiplexed. In this case, for example, the threshold value can be set to 40%. At the same time, if the terminal radio environment to be multiplexed is judged to be large according to the measurement report parameter due to some sudden cause, the threshold may be set, for example, when the MS and the measurement report of the MS in the service are the same measurement parameter. The difference between the difference and the reference value, for example, when the ratio of the largest one of the measurement parameters is greater than 60%, does not allow the MS to be multiplexed to the selected channel, and is re-optimized according to the measurement report.

In the embodiment of the present invention, when multiple (for example, two) terminals are being multiplexed, if for some reason (such as terminal movement, etc.), "3⁄4 measurement" on both terminals (such as RXLEV-VAL, ME AN—BEP, RXQUAL—FULL and other parameters are similar. There is a big difference. At this time, the network can set the threshold according to the measurement on the TCH of the four terminals on the two terminals, for example, 60%, when the measurement of two MSs In the report, the difference between the same measurement parameter and the reference value. For example, when the ratio of the largest one of the measurement parameters is greater than 60%, it is judged that the wireless environment of the two terminals being multiplexed is too large, and the network is terminated. Multiplexing of two terminals.

A further embodiment of the present invention provides a method for multiplexing multiple users to the same time slot, which uses the TA value as a basis for judging, is applicable to initial multiplexing of multiple terminals, or one terminal is multiplexed with another terminal that is performing services. The specific process is shown in Figure 5, including the following steps:

Step 501: The network side device determines, according to the TA values of the current two terminals, a physical relative position between the terminal and the base station, such as a distance of the terminal from the base station. Wherein, TA is the time delay value carried by the mobile station on the measurement report header sent by the mobile station to the base station during the call progress, and the network side is set. The monitoring time of the arrival of the call is made, and an instruction is sent to the mobile station on the downlink channel to indicate the time when the mobile station transmits in advance.

Step 502: The network side device determines the similarity degree of the wireless environment according to the distance from the terminal to the base station, and refers to when the network side device allocates the multiplexing terminal.

Step 503: The network side device preferably multiplexes the MS closest to the base station to the same service channel TCH. Here, a threshold may be set, which is the difference between the two terminals TA, for example, 40, 20. When the difference between the two terminals TA is greater than the threshold 40, the multiplexing may be avoided as much as possible. , can be multiplexed with priority candidates.

An embodiment of the device for multiplexing multiple users in the same time slot, as shown in FIG. 6, includes: a measurement parameter obtaining unit 10, configured to acquire measurement parameters of at least one candidate multiplexing terminal; and a determining unit 20, configured to The measurement parameter acquired by the measurement parameter obtaining unit 10 determines whether two candidate multiplex terminals, or one candidate multiplex terminal, and another terminal that is performing services determine whether the measurement parameter satisfies a preset condition; the multiplexing unit 30 And, when the determining unit 20 determines that the measurement parameter meets the preset condition, multiplexing the two candidate multiplex terminals, or one candidate multiplex terminal, with another terminal that is performing services to the same time slot.

The device for multiplexing the same time slot by the multiple users further includes: removing the multiplexing unit 40, and determining that the plurality of terminals are demultiplexed and multiplexed when the measurement parameters of the multiple terminals that are being multiplexed do not meet the preset condition.

The determining unit 20 specifically includes: a threshold setting sub-unit 21, configured to set a measurement parameter threshold; and a determining sub-unit 22, configured to determine whether the ratio of the same measurement parameter to the threshold of the plurality of terminals is greater than a threshold value The measurement parameter set by the subunit 21 is greater than the threshold. If yes, the measurement parameter satisfies the preset condition; if not, the measurement parameter does not satisfy the preset condition.

Another embodiment of the device for multiplexing multiple users in the same time slot, as shown in FIG. 7, includes: an obtaining module 50 and a multiplexing module 60, wherein the obtaining module 50 is configured to acquire measurement parameters of at least one candidate multiplexing terminal; The multiplexing module 60 is configured to perform multiplexing operation on the candidate multiplexing terminal when the measurement parameters acquired by the obtaining module 50 meet the preset wireless environment conditions. The device of this embodiment further includes: a removal module 70, configured to remove and multiplex the multiple terminals when the measurement parameters of the multiple terminals being multiplexed do not meet the preset wireless environment conditions.

In addition, the multiplexing module 60 includes: a first multiplexing unit 61 and/or a second multiplexing unit 62, where the first multiplexing unit 61 is configured to acquire the measurement parameters of one candidate multiplexing terminal and obtain a candidate complex When the measurement parameters of the terminal and the terminal that is performing the service satisfy the preset wireless environment condition, the candidate multiplex terminal and the terminal that is performing the service are multiplexed to the time slot occupied by the terminal that is performing the service; the second multiplexing unit 62 And when the acquiring module 50 acquires measurement parameters of the plurality of candidate multiplexing terminals and the measurement parameters of the plurality of candidate multiplexing terminals satisfy the preset wireless environment condition, multiplexing the plurality of candidate multiplexing terminals into the same time slot.

Further, the device in this embodiment further includes: a determining module 80, configured to acquire the module

Determining, by the 50, the difference between the same measurement parameter of the at least one terminal and the reference value, for example, when the ratio of the largest measurement parameter in the same measurement parameter is less than or equal to the preset threshold, determining that the measurement parameter meets the preset wireless environment condition; or When the difference between the same measurement parameters of the at least one terminal acquired by the obtaining module 50 is less than or equal to the preset threshold, determining that the measurement parameter meets the preset wireless environment condition; or, the ratio of the same measurement parameter of the at least one terminal acquired by the obtaining module 50 is less than or equal to The preset threshold determines that the measurement parameter meets the preset wireless environment condition.

The method for implementing the multi-user multiplexing of the same time slot by using the foregoing device embodiment is basically similar to the method embodiment of the present invention, and details are not described herein again.

The embodiment of the device for multiplexing multiple users in the same time slot can avoid the impact on the user service caused by improper multiplexing, can improve the wireless performance, and improve the feeling of enhancing the multi-user multiplexing user in the same time slot, and at the same time Effective power control provides the conditions. And improve spectrum efficiency and more efficient use of hardware and spectrum resources. In addition, if the mobile station being multiplexed cannot be continued due to network reasons, the network needs to actively remove the multiplex, and the network needs to determine whether to remove the basis for multiplexing.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, can also be hard. Pieces, but in many cases the former is a better implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for making a A computer device (which may be a personal computer, server, or network device, etc.) performs the methods described in various embodiments of the present invention.

The above disclosure is only a few specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.

Claims

Rights request

A method for multiplexing a same time slot by multiple users, comprising:

Obtaining measurement parameters of at least one candidate multiplexing terminal;

The method for multiplexing the same time slot by the multi-user according to claim 1, wherein the acquiring the measurement parameters of the at least one candidate multiplexing terminal comprises:

Obtaining measurement parameters of a candidate multiplexing terminal;

And if the obtained measurement parameter meets the preset wireless environment condition, performing multiplexing operation on the candidate multiplexing terminal, including:

If the measurement parameters of the one candidate multiplex terminal and the terminal that is performing the service meet the preset wireless environment condition, the one candidate multiplex terminal and the service-enabled terminal are multiplexed to the terminal that is in service Occupied time slot.

Obtaining measurement parameters of multiple candidate multiplexing terminals;

And if the measurement parameters of the plurality of candidate multiplex terminals satisfy a preset wireless environment condition, multiplexing the plurality of candidate multiplex terminals to the same time slot.

The method for multiplexing the same time slot by the multi-user according to claim 2 or 3, wherein after the multiplexing operation on the candidate multiplexing terminal, the method further includes:

If the measurement parameters of the plurality of terminals being multiplexed do not satisfy the preset wireless environment conditions, the plurality of terminals are detached and multiplexed.

The method for multiplexing a same time slot by a multi-user according to any one of claims 1 to 3, wherein the measurement parameter comprises: a measurement report reported by the terminal, or a network The amount of time advanceed by the network side device to the terminal.

The method for multiplexing a same time slot by a multi-user according to claim 5, wherein the measurement parameter further comprises: a specific measurement parameter specified by the network.

The method for multiplexing a same time slot by a multi-user according to claim 5, wherein the measurement report reported by the terminal comprises: a measurement report of an independent dedicated control channel SDCCH, and a measurement report of a specified frequency point of the network side device. Or a measurement report of the traffic channel TCH to be assigned.

The method for multiplexing a same time slot by a multi-user according to claim 2 or 3, wherein the measurement parameter satisfies a preset wireless environment condition, and includes:

If the ratio of the difference between the same measurement parameter and the reference value of the multiple terminals is less than or equal to the preset threshold, the measurement parameter meets the preset wireless environment condition; or

If the difference between the same measurement parameters of the multiple terminals is less than or equal to the preset threshold, the measurement parameters meet the preset wireless environment conditions; or

The ratio of the same measurement parameter of the multiple terminals is less than or equal to a preset threshold, and the measurement parameter satisfies a preset wireless environment condition.

The method for multiplexing a same time slot by a multi-user according to claim 8, wherein the reference value comprises:

The largest measurement parameter of the same measurement parameter, the average value of the same measurement parameter or any one of the same measurement parameters.

10. A device for multiplexing multiple users in the same time slot, comprising:

a measurement parameter obtaining unit, configured to acquire measurement parameters of at least one candidate multiplexing terminal; a determining unit, configured to: select two candidate multiplexing terminals, or one candidate multiplexing terminal according to the measurement parameters acquired from the measurement parameter acquiring unit Judging with another terminal that is conducting a service to determine whether the measurement parameter meets the preset condition;

11. The apparatus for multiplexing a same time slot by a multi-user according to claim 10, further comprising:

The multiplexing unit is configured to remove and multiplex the plurality of terminals when the measurement parameters of the multiple terminals being multiplexed do not meet the preset conditions.

The apparatus for multiplexing a same time slot by a multi-user according to claim 10 or 11, wherein the determining unit comprises:

a threshold setting subunit, configured to set a threshold of the measurement parameter;

a determining subunit, configured to determine whether a ratio of a difference between the same measurement parameter of the plurality of terminals and the reference value is less than or equal to a preset threshold, and if yes, the measurement parameter satisfies a preset condition; if not, the measurement parameter does not satisfy the preset condition .

13. A device for multiplexing multiple users in the same time slot, comprising:

An obtaining module, configured to acquire measurement parameters of at least one candidate multiplexing terminal;

And a multiplexing module, configured to perform multiplexing operation on the candidate multiplexing terminal when the measurement parameter acquired by the acquiring module meets a preset wireless environment condition.

14. The apparatus for multiplexing a same time slot by a multi-user according to claim 13, further comprising:

And removing the module, configured to remove and multiplex the multiple terminals when the measurement parameters of the multiple terminals being multiplexed do not meet the preset wireless environment conditions.

The apparatus for multiplexing a same time slot by a multi-user according to claim 13 or 14, wherein the multiplexing module comprises:

a first multiplexing unit, configured to: when the acquiring module acquires measurement parameters of a candidate multiplex terminal, and the measurement parameters of the one candidate multiplex terminal and the terminal that is in service satisfy a preset wireless environment condition, a candidate multiplexed terminal and the terminal in which the service is being multiplexed to a time slot occupied by the terminal in service; and/or

a second multiplexing unit, configured to: when the acquiring module acquires measurement parameters of multiple candidate multiplexing terminals, and the measurement parameters of the multiple candidate multiplexing terminals meet preset wireless environment conditions, The candidate multiplexed terminals are multiplexed into the same time slot.

The apparatus for multiplexing a same time slot by a multi-user according to claim 15, further comprising:

a determining module, configured to: when the ratio of the difference between the same measurement parameter and the reference value of the at least one terminal acquired by the acquiring module is less than or equal to a preset threshold, determining that the measurement parameter meets a preset wireless environment condition; or

Determining that the measurement parameter meets a preset wireless environment condition when a difference between the same measurement parameters of the at least one terminal acquired by the acquiring module is less than or equal to a preset threshold; or

And determining, when the ratio of the same measurement parameter of the at least one terminal acquired by the acquiring module is less than a preset threshold, determining that the measurement parameter meets a preset wireless environment condition.