[0031] The power detection method based on discontinuous transmission and the base station provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0032] The embodiment of the present invention first provides a DTX-based power detection method, such as figure 1 Shown, including:
[0033] In step S101, the number of effective downlink frames and the total number of downlink frames in the measurement period are counted.
[0034] When the DTX is turned on, the downlink valid frame includes any one or any combination of a downlink voice frame and a silent frame (SID frame) used to avoid problems when the user terminal receives idle frames for a long time. The idle frame does not need to turn on the power amplifier during the transmission process, and is an invalid frame. Among them, silent frames, voice frames and idle frames all need to be modulated (or demodulated) by the carrier frequency before they can be sent (or received). Among them, the carrier frequency is also used to carry the uplink valid frames and invalid frames sent by the user terminal.
[0035] Step S102: Calculate the ratio of effective downlink frames to the total downlink frames. Calculated as follows:
[0036] The proportion of downlink effective frames = the number of downlink effective frames/total downlink frames; formula (1)
[0037] Among them, "/" is the division operation.
[0038] Step S103: Calculate the power occupied by the downlink effective frames according to the proportion of the downlink effective frames.
[0039] Specifically, the power occupied by valid frames can be calculated through the following steps:
[0040] In step S103.1, the attenuation level of the carrier frequency carrying the downlink effective frame is calculated by formula (2).
[0041] Attenuation level = static attenuation level + dynamic attenuation level; formula (2).
[0042] Among them, the static attenuation level of the same carrier frequency is a constant, while the dynamic attenuation level can be dynamically configured according to the air interface quality and service requirements.
[0043] In step S103.2, the attenuation coefficient of the carrier frequency is obtained according to the attenuation level. For example, the attenuation coefficient of the carrier frequency can be obtained by looking up a table. Among them, before looking up the table, a mapping table between the attenuation level and the attenuation coefficient needs to be stored in the base station in advance; so that the base station can directly search for the attenuation coefficient corresponding to the calculated attenuation level from the stored mapping table.
[0044] Step S103.3: Calculate the power occupied by the downlink effective frame according to the power of the carrier frequency, the attenuation coefficient, the rate factor and the ratio of the downlink effective frame. The method for calculating the power occupied by the downlink valid frame is as described in formula (3):
[0045] The power occupied by the downlink valid frame = the power of the carrier frequency * the attenuation coefficient * the ratio of the downlink valid frame * the rate factor; formula (3)
[0046] Among them, "*" is the multiplication operation.
[0047] In this embodiment, when the above detection process does not need to consider the attenuation coefficient, the power of the downlink effective frame can also be preliminarily estimated based on the power of the carrier frequency, the rate factor, and the ratio of the effective frame. In the rough calculation, the attenuation coefficient can be 1 by default.
[0048] In this embodiment, since GSM is a time division system, there are two service bearing modes at full rate and half rate, and the frame structure under full rate and half rate has not changed, but the odd-numbered frames in the multi-frame carried by the carrier frequency are unchanged. Allocate to one user, and allocate even-numbered frames to another user; therefore, one multi-frame can be used to carry the services of two user terminals, so that the power contributed by the base station to any user terminal is only half of that in the full-rate working mode . Therefore, in the calculation process of the above formula (3), the rate factor in the case of full rate is set to be 1, and the rate factor in the case of half rate is set to be 1/2.
[0049] According to the power detection method based on discontinuous transmission provided by the embodiment of the present invention, when DTX is turned on, the base station can calculate the power occupied by the valid frame according to the ratio of the valid downlink frame to the total number of downlink frames, and realize simple and convenient power detection And it is no longer necessary to deploy third-party testing instruments, which reduces the cost of networking.
[0050] The embodiment of the present invention also provides a power detection method based on discontinuous transmission, such as figure 2 Shown, including:
[0051] Step S201: Count the number of valid uplink frames and the total number of uplink frames in the measurement period. When DTX is turned on, the uplink valid frame includes any one or any combination of uplink voice frames, mute frames, and SACCH (Slow Associated Control Channel, slow auxiliary control channel) frames.
[0052] Step S202: Calculate the ratio of uplink valid frames to the total number of uplink frames. Calculated as follows:
[0053] The ratio of uplink effective frames = the number of uplink effective frames/total uplink frames; formula (4)
[0054] Step S203: Calculate the power occupied by the uplink effective frames according to the proportion of the uplink effective frames.
[0055] In this embodiment, the base station calculates the power occupied by the uplink effective frame according to the power of the user terminal, the ratio of the uplink effective frame, the attenuation coefficient and the rate factor of the carrier frequency carrying the uplink effective frame. The calculation formula is as described in formula (5):
[0056] The power occupied by the uplink valid frame = the power of the user terminal * the attenuation coefficient * the ratio of the uplink valid frame * the rate factor; formula (5)
[0057] Among them, "*" is the multiplication operation.
[0058] Since the full-rate and half-rate service bearer modes always appear in pairs, that is, if the full-rate service bearer mode is adopted in the downlink direction, the full-rate service bearer mode is also adopted in the uplink direction. When the base station calculates the actual power occupied by the uplink valid frames, the rate factor is set to 1 in the full-rate service bearer mode; in the half-rate service bearer mode, the rate factor is set to 1/2. In addition, the calculation of the attenuation coefficient is similar to the foregoing embodiment, and will not be repeated here.
[0059] According to the power detection method based on discontinuous transmission provided by the embodiment of the present invention, when DTX is turned on in GSM, the base station calculates the power occupied by the valid frame according to the ratio of the uplink valid frame to the total number of uplink frames; simple and convenient power detection can be realized , And no longer need to deploy third-party testing equipment, reducing the cost of networking.
[0060] In the embodiment of the present invention, the base station may further calculate the power consumption of the uplink or downlink effective frame within a set time according to the power of the effective frame calculated by the above method.
[0061] The power consumption of the downlink valid frame = the power of the downlink valid frame * the statistical time; formula (6)
[0062] The power consumption of the uplink valid frame = the power of the uplink valid frame * the statistical time; formula (7)
[0063] In some specific application scenarios of the GSM system, BSC (Base Station Controller, base station controller) first judges the type of downlink frame, and informs BTS (Base Transceiver Station, base station) whether to open or close the corresponding frame through signaling. Power amplifier processing. The types of this frame include voice frames, SID frames, and idle frames. Then, the BTS calculates the power occupied by the downlink or uplink valid frame according to the above method, or further calculates the power consumption of the downlink or uplink valid frame, and performs corresponding processing according to the detection result. For example: the BTS can improve the transmission performance of the downlink voice frame by itself; the BTS can also report the detection result to the BSC, and the BSC will perform further power control and resource management based on the detection result, and send the processing result to BT8, BTS Then perform operations such as improving the transmission performance of the downlink voice frame according to the message returned by the BSC. For another example: configure the minimum power and power consumption of the carrier frequency carrying the speech frame under the premise of ensuring the correct transmission of the speech frame; or reselect a new carrier frequency to carry the speech frame; or, for the existing carrier More optimal configuration is performed on the frequency, thereby improving the transmission quality and transmission efficiency of the voice frame.
[0064] In the embodiment of the present invention, one carrier frequency can provide services for multiple users in a time division multiplexing manner. The base station can calculate the power contributed by the base station to the effective downlink frame of any user through formula (3), and also calculate the power contributed by any user terminal to the uplink effective frame sent by any user terminal through formula (5). Among them, the total power contributed by the base station to all users' downlink valid frames through the carrier frequency is equal to the sum of the power contributed to each user. In addition, the base station can also calculate the power occupied by the voice frame (or silence frame) according to the proportion of the voice frame (or silence frame) in the valid frame. The calculation method is similar to the foregoing method embodiment, and will not be repeated here.
[0065] The embodiment of the present invention also provides a discontinuous transmission base station. Such as image 3 As shown, the base station includes:
[0066] The first statistics module 1 is used to count the number of effective downlink frames and the total number of downlink frames in the measurement period.
[0067] Generally, the effective downlink frame when DTX is turned on is any one or any combination of downlink voice frames and mute frames.
[0068] The first calculation module 3 is configured to calculate the ratio of the downlink effective frames of the statistics 1 of the first statistics module to the total number of downlink frames. The calculation process can refer to formula (1).
[0069] The first power detection module 5 is configured to calculate the power occupied by the downlink valid frame according to the ratio obtained by the first calculation module 3.
[0070] For example, the first power detection module 5 may calculate the power occupied by the downlink effective frame according to the ratio obtained by the first calculation module 3, the power of the carrier frequency carrying the downlink effective frame, the attenuation coefficient, and the rate factor. For the specific calculation process, refer to the above step S103.1 to step S103.3, which will not be repeated here.
[0071] The embodiment of the present invention also provides a discontinuous transmission base station, including:
[0072] The second statistics module 2 is used to count the number of valid uplink frames and the total number of uplink frames in the measurement period.
[0073] Generally, the uplink valid frame when DTX is turned on is any one or any combination of the uplink voice frame, mute frame, and SACCH frame.
[0074] The second calculation module 4 is configured to calculate the ratio of the uplink valid frames counted by the second statistics module 4 to the total number of uplink frames. The calculation formula can refer to formula (4).
[0075] The second power detection module 6 is configured to calculate the power occupied by the uplink valid frame according to the ratio obtained by the second calculation module 4.
[0076] For example, the second power detection module 6 can calculate the percentage of the uplink effective frames based on the ratio of the uplink effective frames obtained by the second calculation module 4, the power of the user terminal, the attenuation coefficient of the carrier frequency carrying the uplink effective frames, and the rate factor. power. The specific calculation process can refer to the above formula (5).
[0077] Generally, for ease of use, the base station can be configured with a first statistics module 1, a first calculation module 3, and a first power detection module 5 for calculating the power occupied by valid downlink frames; and also configured for calculating the power occupied by valid uplink frames. The second statistical module 2, the second calculation module 4, and the second power detection module 6 of the power. In different application scenarios, the base station can also only configure the first statistical module 1, the first calculation module 3, and the first power detection module 5, or only the second statistical module 2, the second calculation module 4, and the second power detection module. Module 6.
[0078] Wherein, the base station may further include a functional unit for calculating the power consumption of the uplink valid frame or the downlink valid frame. The calculation formula can refer to formula (6) and formula (7), which will not be repeated here.
[0079] Further, the base station may further include a functional unit for performing corresponding management according to the calculated power and/or power consumption, so that the base station can perform corresponding processing according to the detection result. For example, the processing operations include:
[0080] The base station improves the transmission performance of the downlink voice frame by itself; or
[0081] The base station reports the detection result to the BSC, and the BSC performs further power control and resource management based on the detection result, and then the base station performs operations such as improving the transmission performance of the downlink voice frame according to the message returned by the BSC; or
[0082] Configure the minimum power and power consumption of the carrier frequency carrying the speech frame under the premise of ensuring that the base station transmits the speech frame correctly; or reselect a new carrier frequency to carry the speech frame; or optimize the existing carrier frequency , Thereby improving the transmission quality and transmission efficiency of the voice frame.
[0083] To sum up, in the base station provided by the embodiment of the present invention, when DTX is turned on in GSM, the base station calculates the power occupied by the effective frame according to the ratio of the effective frame; the effective frame may be the effective frame in the uplink direction received by the base station through the carrier frequency , It can also be a valid frame in the downlink direction sent by the base station through the carrier frequency; the implementation is simple and convenient, and there is no need to deploy third-party detection instruments, reducing the cost of networking.
[0084] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing relevant hardware through a computer program. The program can be stored in a computer readable storage medium, and the program can be stored in a computer readable storage medium. During execution, it may include the procedures of the above-mentioned method embodiments. Wherein, the storage medium may be a magnetic disk, an optical disc, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random Access Memory, RAM), etc.
[0085] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. It should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
