WO2012163136A1

WO2012163136A1 - Method and device for improving communication quality

Info

Publication number: WO2012163136A1
Application number: PCT/CN2012/072525
Authority: WO
Inventors: 司立坤; 王树祥; 胡小兰; 李立志
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-05-30
Filing date: 2012-03-19
Publication date: 2012-12-06
Also published as: CN102811449A

Abstract

The present invention provides a method and device for improving communication quality. The method comprises: when a terminal accesses or a periodical ranging code reported by the terminal is not received within a timing length, a base station sending a ranging message to the terminal, the ranging message comprising a dedicated periodical ranging code and ranging indication information. The present invention may avoid deterioration of quality of communication with the base station caused by that the terminal does not initiate the periodical ranging.

Description

Method and device for improving communication quality

Technical field

The present invention relates to wireless communication technologies, and in particular, to a method and apparatus for improving communication quality. Background technique

After the terminal accesses the base station, the ranging code is periodically sent to the base station, and the period is generally 5-lOs. The base station detects the signal quality of the terminal through the ranging code, and recommends a value to the terminal, so that the terminal adjusts the power deviation of the signal. Time offset or frequency offset to ensure the communication quality between the terminal and the base station. When there is uplink data, not all terminals will actively cycle ranging. In this case, if the base station does not check the signal quality of the uplink data, it is easier to cause the terminal to be disconnected due to the time offset and excessive power deviation.

Summary of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and apparatus for improving communication quality to prevent a terminal from initiating periodic ranging without causing deterioration in communication quality with a base station.

In order to solve the above technical problem, the present invention provides a method for improving communication quality, including: when a base station does not receive a periodic ranging code reported by the terminal during terminal access or within a certain time duration, the base station sends the terminal to the terminal. Sending a ranging message, where the ranging message includes a dedicated periodic ranging code and ranging indication information.

The foregoing method further has the following features: after the step of the base station sending the ranging message to the terminal, the method further includes:

If the periodic ranging code reported by the terminal is received within the timing duration, the adjustment values of the time offset, the frequency offset, and the power deviation of the signal are respectively calculated according to the periodic ranging code, and then dynamically adjusted according to the adjusted value. After the ranging response message is sent to the terminal, the timing is re-timed with the adjusted timing duration.

The foregoing method further has the following features: the step of the base station dynamically adjusting the timing duration according to the adjustment value includes:

If it is determined according to the adjustment value that the relevant parameter of the adjustment signal is not needed, the timing duration is The predetermined step size is increased, and the ranging response message includes: a periodic ranging code and ranging success information randomly selected from the periodic ranging code set.

The above method also has the following characteristics:

If the adjusted timing duration is greater than a preset upper limit value, the base station retimes with the upper limit value as a fixed duration.

If it is determined according to the adjustment value that the relevant parameter of the signal needs to be adjusted, and the adjustment value is within the specified range, the timing duration is not adjusted, and the ranging response message includes: a periodic measurement randomly selected from the periodic ranging code set. Distance code, ranging success information and signal adjustment recommended values.

If it is determined according to the adjustment value that the relevant parameter of the signal needs to be adjusted, and the adjustment value is not within the specified range, the timing duration is decreased by a predetermined step, and the ranging response message includes: randomly selecting from the periodic ranging code set One cycle ranging code, ranging indication information, and signal adjustment recommended value.

The above method further has the following features: If the adjusted timing duration is less than a preset lower limit value, the base station retimes with the lower limit value as the timing duration.

In order to solve the above problem, the present invention further provides an apparatus for improving communication quality, which is applied to a base station, and includes:

a detecting module, configured to detect whether the terminal accesses or detects whether a periodic ranging code reported by the terminal is received within a timing duration;

a sending module, configured to: when the detecting module detects the terminal access or does not receive the periodic ranging code reported by the terminal within a certain time duration, sending a ranging message to the terminal, where The ranging message includes a dedicated periodic ranging code and ranging indication information.

The above device also has the following features: The device further includes:

a calculation module, configured to: if the periodic ranging code reported by the terminal is received within a timing duration, calculate an adjustment value of a time offset, a frequency offset, and a power deviation of the signal according to the periodic ranging code; And an adjustment module configured to dynamically adjust the timing duration according to the adjustment value; and a timing module configured to: after transmitting the ranging response message to the terminal, re-timing with the adjusted timing duration of the adjustment module.

The above device also has the following features:

The adjusting module is configured to dynamically adjust the timing duration according to the adjustment value according to the adjustment manner; if it is determined according to the adjustment value that the relevant parameter of the adjustment signal is not required, the timing duration is increased by a predetermined step; If it is determined according to the adjustment value that the relevant parameter of the signal needs to be adjusted, and the adjustment value is within the specified range, the timing duration is not adjusted; if the adjustment parameter needs to be adjusted, the relevant parameter of the signal needs to be adjusted, and the adjustment value is not within the specified range. Then, the timing duration is reduced by a predetermined step size.

The above device also has the following features:

The timing module is configured to perform retiming in the following manner; if it is determined that the adjusted timing duration is greater than a preset upper limit value, the upper limit value is re-timed according to the timing duration; if it is determined that the adjusted timing duration is less than The preset lower limit value is retimed with the lower limit value as the timing duration.

In order to solve the above problems, the present invention further provides a terminal, including:

a receiving module, configured to receive a ranging response message, where the ranging response message carries a dedicated periodic ranging code;

A ranging module configured to perform periodic ranging according to the periodic ranging code.

The terminal further has the following features: The terminal further includes:

And an adjustment module, configured to adjust the relevant parameter of the signal by using the recommended adjustment value if it is determined that the ranging response message carries the recommended adjustment value.

The above terminal also has the following features:

The ranging module is configured to perform periodic ranging according to the following manner: if it is determined that the ranging response message carries the ranging indication information, the periodic ranging code is immediately sent to the base station, and if the ranging response message is determined When the ranging success information is carried, the periodic measurement macro code is sent to the base station when the next period arrives.

The terminal further has the following features: The terminal further includes: a storage module configured to store the periodic ranging code. In summary, the present invention provides a method and apparatus for improving communication quality to prevent a terminal from initiating periodic ranging and causing deterioration in communication quality with a base station. BRIEF abstract

1 is a schematic diagram of an apparatus for improving communication quality according to the present invention;

2 is a schematic flow chart of the present invention;

3 is a schematic diagram of a base station side processing ranging code according to the present invention;

4 is a schematic diagram of processing a ranging code on the terminal side of the present invention;

FIG. 5 is a schematic diagram of a terminal according to an embodiment of the present invention.

Preferred embodiment of the invention

In order to make the objects, the technical solutions and the advantages of the present invention more clearly, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments of the present application may be arbitrarily combined with each other.

When the base station provided by the present invention detects that the terminal does not send the periodic ranging code within a certain period of time, it actively sends a ranging response to the terminal, and triggers the terminal to send a ranging code to ensure the communication quality between the terminal and the base station. FIG. 1 is a schematic diagram of an apparatus for improving communication quality according to an embodiment of the present invention. The apparatus is applied to a base station. As shown in FIG. 1, the apparatus in this embodiment includes:

a detecting module, configured to detect that the terminal accesses or does not receive the periodic ranging code of the terminal on the terminal within a certain timing; and

a sending module, configured to send a ranging message to the terminal if the detecting module detects the terminal access or does not receive the periodic ranging code of the terminal within a certain time duration, The ranging message includes a dedicated periodic ranging code and ranging indication information.

In a preferred embodiment, the device further includes: a calculation module, an adjustment module, and a timing module, where

a calculation module, configured to receive the periodic ranging code reported by the terminal within a timing duration, Calculating the time offset, frequency offset and power deviation of the signal according to the period ranging code;

And an adjustment module configured to dynamically adjust the timing duration according to the calculation result; and a timing module configured to: after transmitting the ranging response message to the terminal, re-timing with the adjusted timing duration of the adjustment module.

The adjusting module is configured to: dynamically adjust the timing duration according to the calculation result: if it is determined according to the calculation result that the relevant parameter of the adjustment signal is not needed, the timing duration is increased by a predetermined step; If it is determined that the relevant parameter of the signal needs to be adjusted, and the adjustment value is within the specified range, the timing duration is not adjusted; if it is determined according to the calculation result that the relevant parameter of the signal needs to be adjusted, and the adjustment value is not within the specified range, the timing duration is Reduce the predetermined step size.

The timing module is configured to, if it is determined that the adjusted timing duration is greater than a preset upper limit value, re-timing with the upper limit value as a timing duration; if it is determined that the adjusted timing duration is less than a preset lower period The limit value is re-timed with the lower limit value as the timing duration.

2 is a flow chart of a method for improving communication quality according to the present invention. As shown in FIG. 2, the method includes the following steps:

S10. The base station sends a ranging message to the terminal when the terminal accesses or does not receive the periodic ranging code reported by the terminal, and the ranging message includes a dedicated periodic ranging code. Ranging indication information.

The method of the present invention will now be described in detail in a specific embodiment.

First, the upper and lower limits of the base station side active ranging period and the adjustment step size are configured in the network management configuration management. The period of the terminal period ranging is generally 5-lOs, and the period interval of the maximum period ranging specified in the protocol is 35s. In view of this, the base station active ranging period interval upper and lower limits can be [5s, 35s], the lower limit default value is 5s, the upper limit default value is 35s, the step size can have two value selection, for example, 5s and 10s, default value 5s. For the convenience of description, it is assumed that the network management system configures the upper and lower limits of the active ranging period of the base station side and the adjustment step length: the lower limit is 10s, the upper limit is 35s, and the step is 5s.

After the terminal is initially accessed or the network is re-entered, the base station starts with the configured lower period limit as the timer duration and starts the timer. According to the quality of the detected terminal signal, the timer length is dynamically adjusted to ensure the communication quality between the terminal and the base station.

As shown in FIG. 3, the method of the embodiment of the present invention includes the following steps: Step 101: The terminal initially accesses or the network re-enters the base station successfully;

Step 102: The base station actively sends a ranging message (such as an RNG-RSP message) to the terminal in a unicast manner, where the message includes a dedicated periodic ranging code and a Ranging Status, where the ranging ranging code is from The periodic ranging code set is selected, and the Ranging Status is assigned a value of 1 (indicating continue).

Ranging Status indicates whether the test is successful or not. The value can be 1 for continuous (continued ranging), 2 for Abort (let the terminal exit), and 3 for success (representing successful ranging) ). Usually, if this value is set to 1, the terminal will initiate the ranging again immediately; if it is 3, the terminal will wait until the timer expires before initiating the next ranging.

Step 103: The base station starts a timer for the active period ranging, and the duration of the timer is the lower limit of the period in the network management configuration, for example, 10s;

The terminal receives the RNG-RSP message, and initiates periodic ranging using the periodic ranging code allocated by the base station when the terminal initiates periodic ranging.

Step 104: If the base station receives the periodic ranging code sent by the terminal before the timer expires, the timer is cancelled, and the adjustment values of the time offset, the frequency offset, and the power deviation are calculated according to the periodic ranging code, and the adjustment value is analyzed to determine whether it is needed. Adjust the relevant parameters of the signal (for example, power, time offset or frequency offset), if no adjustment is needed, then go to step 105; if adjustment is needed, go to step 106;

Step 105: The base station randomly selects one from the periodic ranging code set, adjusts the timer duration, increases the step length by 5 s, and the timer duration is 15 s, and sends the RNG-RSP, the message carries a dedicated periodic ranging code, and the state Ranging Status is set to 3 ( success ), restart the timer with a period of 15s;

If the timer duration exceeds the upper limit after increasing the step size, the above limit 35s restarts the timer. Step 106, the base station further determines whether the signal adjustment value is within a specified range, if it is within the range, then proceeds to step 107; if not, then proceeds to step 108;

Step 107: The base station randomly selects a ranging code from the periodic ranging code set, and sends an RNG-RSP, where the message carries a dedicated periodic ranging code, Ranging Status is set to 3 (success), and the signal adjustment recommended value is used to the original timer. The duration is 10s for the periodic restart timer.

Step 108: randomly select a ranging code from the periodic ranging code set, and send an RNG-RSP, the message carries the dedicated periodic ranging code, and the state Ranging Status is set to 1 (continued), the signal is adjusted. The recommended value is the length of the timer. The step size is reduced by 5 seconds. The timer length is 10 seconds. Therefore, the timer is still 10 seconds long.

Step 109: If the base station does not receive the ranging code of the terminal before the timer expires, the base station randomly selects one of the periodic ranging code sets, and sends an RNG-RSP message, where the message carries the dedicated period measurement macro code and Ranging Status. For 1 ( continue ), restart the timer.

As shown in FIG. 4, the terminal processing procedure of the embodiment of the present invention includes the following steps:

Step 31: After accessing the base station, the terminal waits for the RNG-RSP message of the base station;

Step 32: The terminal receives the RNG-RSP message of the base station.

Step 33: The terminal saves the dedicated periodic ranging code carried in the RNG-RSP message; Step 34, the terminal determines whether the signal needs to be adjusted, specifically, whether there is a recommended signal adjustment value, if yes, then proceeds to step 35; If not, then go to step 36;

Step 35: The terminal adjusts according to the adjustment value, and then proceeds to step 36;

Step 36: After waiting for the timing of the ranging code to arrive, send a periodic ranging code specified by the base station to perform periodic ranging.

If the Ranging Status carried in the RNG-RSP message is 1, the cyclic ranging code is sent to the base station immediately after the signal parameter is adjusted. If the Ranging Status carried in the RNG-RSP message is 3, the signal parameter is adjusted, and the next parameter is waited for. The periodic ranging code is sent to the base station when the period arrives.

The present invention further provides a terminal. As shown in FIG. 5, the terminal in this embodiment includes:

The ranging module is specifically configured to: if it is determined that the ranging response message carries the ranging indication information, immediately send the periodic ranging code to the base station, and if the ranging response message is determined to carry the ranging success information And sending the periodic ranging code to the base station when the next period arrives.

In a preferred embodiment, the terminal may further include:

And an adjustment module, configured to: if it is determined that the ranging response message carries the recommended adjustment value, adjust the relevant parameter of the signal by using the recommended adjustment value. In a preferred embodiment, the terminal may further include:

a storage module configured to store the periodic ranging code. Compared with the prior art, the present invention introduces a function of actively initiating periodic ranging on the base station side. Currently, the requirement in the protocol is that the terminal initiates periodic ranging, and the implementation of the present invention prevents the terminal and the base station from being caused by the terminal not initiating periodic ranging. Poor communication quality causes the terminal to be disconnected or affect the occurrence of data transmission.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be accomplished by a program instructing the associated hardware, such as a read-only memory, a magnetic disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiment may be implemented in the form of hardware or in the form of a software function module. The invention is not limited to any specific form of combination of hardware and software.

The above is only a preferred embodiment of the present invention, and of course, the present invention may be embodied in various other embodiments without departing from the spirit and scope of the invention. Corresponding changes and modifications are intended to be included within the scope of the appended claims.

Industrial applicability

Compared with the prior art, the present invention can prevent the terminal from initiating periodic ranging and causing the communication quality with the base station to deteriorate.

Claims

Claim

1. A method for improving communication quality, including:

The base station sends a ranging message to the terminal when the terminal accesses or does not receive the periodic ranging code reported by the terminal, and the ranging message includes a dedicated periodic ranging code and ranging. Instructions.

2. The method according to claim 1, wherein after the step of the base station transmitting the ranging message to the terminal, the method further includes:

3. The method according to claim 2, wherein the step of dynamically adjusting the timing duration according to the adjustment value by the base station comprises:

If it is determined that the relevant parameter of the adjustment signal is not needed according to the adjustment value, the timing duration is increased by a predetermined step size, and the ranging response message includes: a periodic ranging code and a measurement randomly selected from the periodic ranging code set. From success information.

4. The method of claim 3, wherein

The method of claim 2, wherein the step of dynamically adjusting the timing duration according to the adjustment value by the base station comprises:

The method of claim 2, wherein the step of dynamically adjusting the timing duration by the base station according to the adjustment value comprises:

If it is determined according to the adjustment value, the relevant parameters of the signal need to be adjusted, and the adjustment value is not in the specified range. In the range, the timing duration is decreased by a predetermined step size, and the ranging response message includes: a periodic ranging code, ranging indication information, and a signal adjustment recommended value randomly selected from the periodic ranging code set.

7. The method of claim 6, wherein

If the adjusted timing duration is less than a preset lower limit value, the base station retimes with the lower limit value as a fixed duration.

8. A device for improving communication quality, applied to a base station, comprising:

9. The apparatus of claim 8 further comprising:

a calculation module, configured to: if the periodic ranging code reported by the terminal is received within a timing duration, calculate an adjustment value of a time offset, a frequency offset, and a power deviation of the signal according to the periodic ranging code;

And an adjustment module configured to dynamically adjust the timing duration according to the adjustment value; and a timing module configured to: after transmitting the ranging response message to the terminal, re-timing with a timing duration adjusted by the adjustment module.

10. The apparatus according to claim 9, wherein

11. Apparatus according to claim 9 or 10, wherein

The timing module is configured to perform retiming by: if it is determined that the adjusted timing duration is greater than a preset upper limit value, the upper limit value is re-timed according to the timing duration; If the timing length is less than the preset lower limit value, the lower limit value is re-timed according to the timing duration.

12. A terminal, comprising:

13. The terminal of claim 12, further comprising:

14. The terminal of claim 12, wherein

The ranging module is configured to perform periodic ranging according to the following manner: if it is determined that the ranging response message carries the ranging indication information, the periodic ranging code is immediately sent to the base station, and if the ranging response message is determined Carrying the ranging success information, the periodic ranging code is sent to the base station when the next period arrives.

The terminal according to any one of claims 12 to 14, further comprising:

a storage module configured to store the periodic ranging code.