CN115189784A

CN115189784A - Time delay processing method and device, electronic equipment and storage medium

Info

Publication number: CN115189784A
Application number: CN202210768599.8A
Authority: CN
Inventors: 王彦煌
Original assignee: Lenovo Beijing Ltd
Current assignee: Lenovo Beijing Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-10-14

Abstract

The embodiment of the application discloses a time delay processing method, which comprises the following steps: a first extension unit HUB receives a time delay measurement signal sent by a baseband processing unit BBU; transmitting the delay measurement signal to at least one signal receiving device; the first extension unit HUB is cascaded with the signal receiving device, and the signal receiving device is a lower device of the first extension unit HUB; receiving a time delay measurement signal returned by the signal receiving equipment; and determining the time delay of the time delay measuring signal to each signal receiving device based on the returned time delay measuring signal. The embodiment of the application also provides a time delay processing device, electronic equipment and a storage medium.

Description

Time delay processing method and device, electronic equipment and storage medium

Technical Field

The present application relates to the field of electronic device technologies, and relates to, but is not limited to, a method and an apparatus for processing a time delay, an electronic device, and a storage medium.

Background

Data is transmitted between a baseband processing Unit (BBU) and a Remote Radio Unit (RRU) by using an optical fiber, where the data is transmitted by the BBU and the RRU must be transmitted outside in the air interface time. Therefore, the time delay between the BBU and the RRU needs to be determined, so that the RRU sends data in the air interface time, and the efficiency of data transmission is improved.

Disclosure of Invention

The embodiment of the application provides a time delay processing method and device, electronic equipment and a storage medium.

The technical scheme of the embodiment of the application is realized as follows:

in one aspect, an embodiment of the present application provides a delay processing method, where the method includes: a first extension unit HUB receives a time delay measurement signal sent by a baseband processing unit BBU; transmitting the delay measurement signal to at least one signal receiving device; the first extension unit HUB is cascaded with the signal receiving device, and the signal receiving device is a lower device of the first extension unit HUB; receiving a time delay measurement signal returned by the signal receiving equipment; and determining the time delay of the time delay measuring signal to each signal receiving device based on the returned time delay measuring signal.

In another aspect, an embodiment of the present application provides a latency processing apparatus, where the apparatus includes: the receiving module is used for the first extension unit HUB to receive the time delay measurement signal sent by the baseband processing unit BBU; receiving a time delay measurement signal returned by the signal receiving equipment; a sending module, configured to send the delay measurement signal to at least one signal receiving device; the first extension unit HUB is cascaded with the signal receiving device, and the signal receiving device is a lower device of the first extension unit HUB; a determining module, configured to determine, based on the returned delay measurement signal, a delay of the delay measurement signal to each of the signal receiving apparatuses.

In another aspect, an embodiment of the present application provides an electronic device, which includes a memory and a processor, where the memory stores a computer program executable on the processor, and the processor executes the steps in the method.

In yet another aspect, the present application provides a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the method.

The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:

in the embodiment of the application, a first extension unit HUB receives a time delay measurement signal sent by a baseband processing unit BBU; transmitting the delay measurement signal to at least one signal receiving device; the first extension unit is cascaded with the signal receiving device, and the signal receiving device is a subordinate device of the first extension unit HUB. Therefore, on one hand, the time delay measurement signals sent by the BBU are transmitted step by step through the HUB, so that the BBU can directly measure the time delay between the BBU and the subordinate equipment of the HUB. On the other hand, in the process of determining the farthest distance of each level of signal receiving equipment and delaying the measurement signal and data, the steps of setting fixed time delay and obtaining the subordination relation between different levels of signal receiving equipment can be reduced, the process of measuring time delay is simplified, the limitation on the cascade stage number is reduced, and the number of devices which can be cascaded is increased.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

fig. 1 is a schematic flowchart of a delay processing method according to an embodiment of the present application;

fig. 2 is a schematic flowchart of a delay processing method according to an embodiment of the present application;

fig. 3 is a schematic flowchart of a delay processing method according to an embodiment of the present application;

fig. 4 is an alternative architecture diagram of an execution system of a latency processing method according to an embodiment of the present application;

fig. 5A is an alternative architecture diagram of an execution system of a latency processing method according to an embodiment of the present application;

fig. 5B is an alternative architecture diagram of an execution system of a latency processing method according to an embodiment of the present application;

fig. 6 is an alternative architecture diagram of an execution system of a latency processing method according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a delay processing apparatus according to an embodiment of the present disclosure;

fig. 8 is a hardware entity diagram of an electronic device according to an embodiment of the present disclosure.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the following description, reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.

It should be noted that the terms "first \ second \ third" referred to in the embodiments of the present application are only used for distinguishing similar objects and do not represent a specific ordering for the objects, and it should be understood that "first \ second \ third" may be interchanged under specific ordering or sequence if allowed, so that the embodiments of the present application described herein can be implemented in other orders than illustrated or described herein.

It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments of the present application belong. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

To assist in understanding the present application, before describing embodiments of the present application, the terms appearing in the present application are explained as follows:

a Remote Radio Unit (RRU) for separating a baseband signal Unit from a transmitting Unit to realize the separation of the baseband Unit and the Radio frequency Unit of the base station.

A baseband processing Unit (Building Base band Unit, BBU for short) for providing physical communication interfaces between the Base station side and each network element and core network to complete information interaction; processing uplink and downlink data; and performing operation maintenance and signaling processing. Optical fiber connection is needed between the RRU and the BBU, and one BBU can support a plurality of RRUs. Indoor and outdoor signal coverage can be realized by adopting a multi-channel mode of RRU and BBU.

And a HUB (HUB) for regenerative shaping and amplifying the received signal to extend the transmission distance of the signal in the network, and concentrating all nodes on the node centered on the HUB.

Fig. 1 is a schematic flowchart of a delay processing method provided in an embodiment of the present application, and as shown in fig. 1, the method at least includes the following steps:

step S101, a first extension unit HUB receives a time delay measurement signal sent by a baseband processing unit BBU;

here, optical fiber is used between the BBU and the RRU to transmit data, and the RRU must transmit data at air interface time (air interface time), so the BBU at least needs to transmit data in advance by optical fiber delay plus RRU processing delay, and generally, RRU processing delay is a fixed value and is transmitted to the BBU by an operation, administration and Maintenance (OAM) protocol, and optical fibers of different lengths and types will cause different optical fiber delays, so the BBU needs to realize the capability of measuring delay to transmit data at air interface time, and reduce the data packet loss rate. Here, the time delay can be measured by means of a time difference between the time delay measurement signals sent and received by the BBU. Here, in the process of transmitting and receiving the delay measurement signal, in order to implement measurement of the connection state of multiple nodes (signal receiving devices), the delay measurement signal needs to be transmitted to the HUB, and then the time difference value between the transmission and reception of the delay measurement signal is determined by the way that the HUB transmits the delay measurement signal to other signal receiving devices.

Step S102, the time delay measurement signal is sent to at least one signal receiving device; the first extension unit HUB is cascaded with the signal receiving device, and the signal receiving device is a lower device of the first extension unit HUB;

here, in the case where the signal receiving apparatus is one signal receiving apparatus, the delay measurement signal is transmitted in the BBU, the HUB, and the one signal receiving apparatus. In the case that the signal receiving device is an RRU, the transmission process of the delay measurement signal is as shown in fig. 6, where N =1 in fig. 6. In the transmission process shown in fig. 6, after receiving the delay measurement signal sent by the BBU601, the HUB602 does not immediately return to the BBU601, but forwards the delay measurement signal to the RRU603 after the delay same as the data processing delay, and after receiving the delay measurement signal returned by the RRU603, the HUB602 measures the delay.

Here, in a case where the HUB is not included in the signal receiving apparatus, the delay measurement signal is transmitted in the BBU, the HUB, and at least one signal receiving apparatus. In the case that each of the signal receiving devices is an RRU, a transmission process of the delay measurement signal is as shown in fig. 6, where N in fig. 6 is a positive integer greater than or equal to 2. The HUB602 does not immediately return to the BBU601 after receiving the delay measurement signal sent by the BBU601, but forwards the delay measurement signal to the plurality of RRUs 603 after the delay same as the data processing delay, and measures the delay after the HUB602 receives the delay measurement signal returned by the plurality of RRUs 603.

Here, in the case where a HUB is included in the signal receiving apparatus, the delay measurement signal is transmitted in the BBU, the at least one HUB, and the at least one RRU. As shown in fig. 5A, after receiving a delay measurement signal sent by the BBU510, the HUB521 transmits the delay measurement signal to a lower-stage HUB522, or an RRU531, or an RRU532, and after receiving the delay measurement signal, the last-stage device RRU534 returns the delay measurement signal, and after receiving the returned signal, the HUB522 measures the delay.

Illustratively, the cascade relationship between the first extension unit HUB and the signal receiving device may be: as shown in fig. 5A, in the connection relationship, the first extension unit HUB521 is a device at the upper stage of the HUB522, and the HUB521 is a HUB522 that has a cascade relationship; the method can also comprise the following steps: the first extension unit HUB521 is a higher-level device of the RRU531 and the RRU532. The signal receiving device may be: at least one of HUB522, RRU531 and RRU532.

Step S103, receiving a time delay measurement signal returned by the signal receiving equipment;

here, the returned delay measurement signal may be a return signal of a delay measurement signal transmitted by another extension unit HUB connected to the first extension unit HUB; the feedback signal of the delay measurement signal sent by the RRU device may also be used, which is not limited herein.

Step S104, determining a time delay from the time delay measurement signal to each signal receiving device based on the returned time delay measurement signal.

Here, the optical fiber delay from the HUB to each signal receiving device can be determined based on the returned delay measurement signal, and since the data processing delay of the HUB is a fixed value and the delay of each signal receiving device = the optical fiber delay from the BBU to the farthest signal receiving device + the HUB processing delay, the delay of the delay measurement signal to each signal receiving device can be determined.

In the implementation process, a first extension unit HUB receives a time delay measurement signal sent by a baseband processing unit BBU; transmitting the delay measurement signal to at least one signal receiving device; the first extension unit is cascaded with the signal receiving device, and the signal receiving device is a subordinate device of the first extension unit HUB. Therefore, on one hand, the time delay measurement signals sent by the BBU are transmitted step by step through the HUB, so that the BBU can directly measure the time delay between the BBU and the subordinate equipment of the HUB. On the other hand, in the process of determining the farthest distance of each level of signal receiving equipment and delaying the measurement signal and data, the steps of setting fixed time delay and obtaining the subordination relation between different levels of signal receiving equipment can be reduced, the process of measuring time delay is simplified, the limitation on the cascade stage number is reduced, and the number of devices which can be cascaded is increased.

Fig. 2 is a schematic flow chart of a delay processing method according to an embodiment of the present application, and as shown in fig. 2, the method at least includes the following steps:

step S201, a first extension unit HUB receives a time delay measurement signal sent by a baseband processing unit BBU;

step S202, sending the time delay measurement signal to at least one signal receiving device; the first extension unit is cascaded with the signal receiving device, and the signal receiving device is a lower device of the first extension unit HUB;

step S203, receiving a time delay measurement signal returned by the signal receiving equipment;

step S204, acquiring data processing time delay of the first extension unit HUB;

here, the data processing delay may include a resulting delay of compressing and decompressing data.

Step S205, determining an optical fiber delay from the first extension unit HUB to each signal receiving device based on the returned delay measurement signal;

step S206, determining the time delay from the time delay measurement signal to each signal receiving device based on the optical fiber time delay and the data processing time delay of the first extension unit HUB.

In one implementation, the at least one signal receiving device includes: at least one radio remote unit RRU; each RRU is a next-stage device of the first extension unit HUB; the step S205 of determining the optical fiber delay from the first extension unit HUB to each signal receiving device based on the returned delay measurement signal includes:

step S2051, determining a first measurement value of the optical fiber delay from the first extension unit HUB to each radio remote unit RRU based on the returned delay measurement signal;

here, the first measurement value may be an actual measurement value of a fiber delay from the first extension unit HUB to each of the RRUs.

Illustratively, as shown in fig. 5A, the first measurement values may be HUB521 to RRU531 and RRU532 identified by solid lines in the figure.

Step S2052 is to determine a maximum value of the at least one first measurement value as a fiber delay from the first extension unit HUB to each radio remote unit RRU.

Illustratively, as shown in fig. 5A, without considering the HUB processing delay, the farthest distance measured by the HUB521 is a2 from the HUB521 to the RRU531, the received measurement signal sent by the BBU510 is delayed by 2 × (a 2) and then transmitted back to the BBU510, the distance between the BBU510 and the HUB521 is a3, the farthest distance measured by the BBU510 is a3+ a2 from the BBU510 to the RRU531, and the delays from the RRU531, the RRU532 to the BBU510 are all compensated to be a3+ a2.

In one implementation, the at least one signal receiving device further includes: at least one second expansion unit HUB; the second extension unit HUB is cascaded with at least one radio remote unit RRU, and each radio remote unit RRU is a lower-level device of the second extension unit HUB; the step S205 of determining, based on the returned delay measurement signal, a fiber delay from the first extension unit HUB to each signal receiving device includes:

step S2053, determining a second measurement value of the optical fiber delay from the second extension unit HUB to each radio remote unit RRU based on the returned delay measurement signal;

here, the second measurement value may be an actual measurement value of the fiber delay from the second extension unit HUB to each of the remote radio units RRU.

Illustratively, as shown in fig. 5A, the second measurement may be HUB522 to RRU533 and RRU534 identified by solid lines in the figure.

Step S2054, determining a maximum value of the at least one second measurement value as a fiber delay from the second extension unit HUB to each radio remote unit RRU;

step S2055 is to determine the fiber delay from the first extension unit HUB to each radio remote unit RRU based on the fiber delay from the second extension unit HUB to each radio remote unit RRU, the data processing delay from the second extension unit HUB, and the fiber delay from the second extension unit HUB to the first extension unit HUB.

Illustratively, as shown in fig. 5A, after receiving a delay measurement signal sent by the BBU510, the first extension unit HUB521 transmits the signal to the second extension unit HUB522 or RRU531 or RRU532, the last stage device RRU534 returns the signal after receiving the delay measurement signal, after the HUB522 receives the returned signal, the fiber delay of each device (the second extension unit HUB or RRU) is calculated, and the maximum delay is calculated, and then the measurement signal is delayed by 2 × (the maximum fiber delay + the processing delay) and transmitted back to the first extension unit (HUB 521), and at the same time, the second extension unit HUB522 compensates the delay of the next device to the maximum fiber delay, as shown in fig. 5A, the solid line is the actual distance between RRUs, and the dashed lines 51 to 54 are the fiber delays of the compensated first extension unit HUB to each of the remote radio units RRUs.

In the implementation process, on one hand, when the first extension unit HUB is directly connected to the remote radio units RRU, a first measurement value of the optical fiber delay from the first extension unit HUB to each remote radio unit RRU is determined; and determining the maximum value of at least one first measurement value as the fiber delay from the first extension unit HUB to each RRU. Therefore, the time delay of the farthest signal receiving device can be determined as the optical fiber time delay from the first extension unit HUB to each RRU, the farthest distance can be automatically calculated by the HUB, and fixed time delay does not need to be set. The steps of modifying the fixed time delay for multiple times under the condition that the time delay of the signal receiving equipment exceeds the set fixed time delay are reduced, and the process of measuring the time delay is simplified.

On the other hand, when a first extension unit HUB is connected to a second extension unit HUB, the optical fiber delay from the first extension unit HUB to each radio remote unit RRU is determined based on the optical fiber delay from the second extension unit HUB to each radio remote unit RRU, the data processing delay of the second extension unit HUB, and the optical fiber delay from the second extension unit HUB to the first extension unit HUB. Therefore, when the first extension unit HUB feeds back the optical fiber time delay of each RRU to the BBU, for the BBU, the BBU cannot sense the existence of the HUB when time delay measurement and compensation are carried out, the BBU is equivalent to the BBU directly connecting the RRUs, after the subordination relation between the HUBs and the RRUs at all levels is obtained, whether the fixed time delay set by different levels is larger than the time delay of the HUB at the next level or not is considered, the process of determining the time delay is simplified, the cascade level is not limited while cascade connection is supported, and the number of signal receiving devices which can be cascaded is increased.

Fig. 3 is a schematic flowchart of a delay processing method according to an embodiment of the present application, and as shown in fig. 3, the method at least includes the following steps:

step S301, a first extension unit HUB receives a time delay measurement signal sent by a baseband processing unit BBU;

step S302, after delaying the data processing delay of the first extension unit HUB, sending the delay measurement signal to at least one signal receiving device; the first extension unit is cascaded with the signal receiving device, and the signal receiving device is a lower device of the first extension unit HUB;

here, the data processing delay of the first extension unit HUB may be a fixed value corresponding to the HUB device type. Here, after receiving the delay measurement signal sent by the BBU, the first extension unit HUB does not immediately return the delay measurement signal to the BBU, but forwards the delay measurement signal to a device at the next stage of the first extension unit HUB after a delay equal to the data processing delay of the first extension unit HUB.

Exemplarily, as shown in fig. 6, after receiving the delay measurement signal sent by the BBU601, the HUB602 does not immediately return to the BBU601, but forwards the delay measurement signal to the RRU603 after a delay equal to the data processing delay, and after receiving the delay measurement signal returned by the RRU603, the HUB602 calculates the maximum delay, selects the delay measurement signal corresponding to the maximum delay, and returns the signal to the higher-level device. In order to make the data received by the BBU or RRU correspond to the delay, the data and the delay measurement signal need to be delayed simultaneously.

Step S303, receiving a time delay measurement signal returned by the signal receiving equipment;

step S304, acquiring data processing time delay of the first extension unit HUB;

step S305, determining the optical fiber delay from the first extension unit HUB to each signal receiving device based on the returned delay measurement signal;

step S306, determining the time delay from the time delay measurement signal to each signal receiving device based on the optical fiber time delay and the data processing time delay of the first extension unit HUB.

In one implementation, the method further includes: determining a compensated time delay for each of the signal receiving devices based on the time delay of the time delay measurement signal to each of the signal receiving devices.

Here, the delay of each of the signal reception devices may be compensated to a maximum delay among the delays of the delay measurement signals to each of the signal reception devices by determining the maximum delay.

In one implementation, the method further includes: the time delay measurement signal is delayed by two times of the data processing time delay and the set optical fiber time delay and then is sent to the baseband processing unit BBU; the set optical fiber time delay is the maximum value of the optical fiber time delay from the first extension unit HUB to any one of the remote radio units.

Illustratively, as shown in fig. 5B, the HUB502 delays the received delay measurement signal sent by the BBU501 by 2 × (maximum delay + processing delay) and returns the delayed delay measurement signal to the BBU501, and the maximum delay obtained may be determined by adding a comparison function.

In the foregoing implementation process, on one hand, after delaying the data processing delay of the first extension unit HUB, the delay measurement signal is sent to at least one signal receiving device, so that the delay measurement signal has an air interface lead, the probability that the signal receiving device misses air interface time sending when receiving data is reduced, and the effectiveness of data transmission is improved. On the other hand, based on the time delay of the time delay measurement signal to each signal receiving device, determining the compensation time delay of each signal receiving device; or delaying the data processing time delay and the set optical fiber time delay which are twice of the time delay measurement signal and then sending the time delay measurement signal to the baseband processing unit BBU; the set optical fiber time delay is the maximum value of the optical fiber time delay from the first extension unit HUB to any one of the remote radio units. Thus, the time delay of the signal receiving equipment of each hierarchy can be compensated to the maximum time delay by compensating the time delay.

The BBU and the RRU use optical fiber to transmit data, the data sent by the BBU and the RRU must be sent in the air interface time. Therefore, the BBU at least needs to send data in advance by using the fiber delay plus the RRU processing delay, and usually, the RRU processing delay is a fixed value and can be transmitted to the BBU through an operation, administration and Maintenance (OAM) protocol, and optical fibers of different lengths and types can generate different fiber delays, so that the BBU is needed to implement measurement delay, and the BBU measures the delay by using the following method:

and when the BBU receives the returned delay measurement signal, calculating the time difference between the receiving time and the sending time of the signal and dividing by 2 to obtain the optical fiber delay of the BBU and the RRU. The BBU calculates the lead according to the optical fiber time delay and the processing time delay of the RRU, so that the RRU cannot miss the sending time when receiving the data. However, the following problems exist in the related art: under the use scene of a BBU, a HUB and one RRU, a time delay measurement signal sent by the BBU cannot directly reach the RRU, so that the BBU cannot directly measure the optical fiber time delay with the RRU.

In order to solve the above problem, in the related art, on one hand, when one RRU is connected, a method shown in fig. 4 is used to obtain a time delay: after receiving the delay measurement signal sent by the BBU401, the HUB402 returns immediately, so that the BBU401 can measure the optical fiber delay between the BBU401 and the HUB402, the HUB402 sends the delay measurement signal to the RRU403 every 10ms, the RRU403 returns immediately after receiving the signal, so that the HUB402 can measure the optical fiber delay between the HUB402 and the RRU403, the HUB402 transmits the delay and the self processing delay to the BBU401 through OAM, and thus the BBU401 obtains the processing delays between the BBU401 and the HUB402, and between the HUB402 and the RRU 403.

On the other hand, in a usage scenario of the BBU, the HUB and the plurality of RRUs, the HUB may measure the time delays of the plurality of RRUs, and thus the time delays are obtained by the following method: the HUB sets a fixed time delay, the time delay is larger than the optical fiber time delay from the HUB to each RRU, the time delay of each RRU is compensated to the set fixed time delay by the HUB, and the BBU calculates the lead according to the fixed time delay, the optical fiber time delay from the BBU to the HUB and the processing time delay of the HUB and the RRU. However, the above method has the following problems: the time delay of the optical fiber accessed to the RRU is larger than the set fixed time delay, and the fixed time delay needs to be reset.

On the other hand, under the use scene of the BBU, the multi-stage HUB and the plurality of RRUs, the following method is adopted for each stage of HUB to obtain the time delay: directly connected with BBU is a first-stage HUB (HUB 1); and a fixed time delay D2 which is larger than the time delay of each RRU optical fiber is required to be set for a second-stage HUB (HUB 2) connected with the HUB1, the HUB1 is required to be set with a fixed time delay D1 which is larger than the time delays from the HUB1 to the HUB2 plus D2, and the BBU calculation lead is required to be larger than the time delays from the BBU to the HUB1 plus D1. However, the above method has the following problems: (1) The fixed time delay set by each stage of HUB is closely related to the dependency relationship, so that the use complexity is increased; (2) The more cascading stages of the HUB, the more complex the use and design, and therefore, the above scheme is often used and implemented for 2-stage cascading.

In order to solve the problems in the three scenarios, an embodiment of the present application provides a delay processing method, as shown in fig. 5A, where the method at least includes the following steps: after receiving a delay measurement signal sent by the BBU510, the HUB521 transmits the signal to a lower-level HUB522, RRU531 or RRU532, the last-level device RRU534 returns the signal after receiving the delay measurement signal, after receiving the returned signal, the HUB522 calculates the optical fiber delay of each device (lower-level HUB or RRU), calculates the maximum delay, and transmits the measurement signal to an upper-level device (HUB 521) after delaying by 2 × (maximum optical fiber delay + processing delay), and at the same time, the HUB522 compensates the delay of the lower-level device to the maximum optical fiber delay, as shown in fig. 5A, the solid line is the actual distance of the RRU, and the dotted lines 51 to 54 are the distances compensated by the HUB.

Without considering the HUB processing delay, the maximum distance calculated or measured by the HUB522 is a1 from the HUB522 to the RRU 534; the HUB522 delays the received measurement signal sent by the HUB521 by 2 × a1 and then transmits the measurement signal back to the HUB521, the farthest distance measured by the HUB521 is a2+ a1 from the HUB521 to the RRU534, and delays the received measurement signal sent by the BBU510 by 2 × (a 1+ a 2) and then transmits the measurement signal back to the BBU510, the farthest distance measured by the BBU510 is a3+ a2+ a1 from the BBU510 to the RRU534, and the delay from each RRU534 to the BBU510 is compensated to be a3+ a2+ a1.

In an implementation manner, the delay processing method may be implemented in two manners: first, as shown in fig. 5B, the HUB502 delays a received delay measurement signal sent by the superior device by 2 × (maximum delay + processing delay) and returns the delayed delay measurement signal to the superior device, and the maximum delay acquisition method needs to add a comparison function on the basis of the conventional measurement delay to determine the maximum delay. Secondly, as shown in fig. 6, after receiving the delay measurement signal sent by the BBU601, the HUB602 does not immediately return to the BBU601, but forwards the delay measurement signal to the RRU603 after the delay equal to the data processing delay, and after receiving the delay measurement signal returned by the RRU603, the HUB602 calculates the maximum delay, selects the delay measurement signal corresponding to the maximum delay, and returns the signal to the upper-level device. In addition, in order to make the data received by the BBU or RRU correspond to the delay, the data and the delay measurement signal need to be delayed simultaneously.

In the implementation process, the delay measurement signals of the BBU are transmitted step by step, so that on one hand, the BBU can measure the delay between the BBU and the RRU; and when time delay measurement and compensation are carried out, the BBU cannot sense the existence of the HUB, and the connection effect is the same as that of the BBU direct-connected RRU. On the other hand, the BBU can obtain the time delay of the signal receiving equipment determined by the optical fiber time delay from the BBU to the farthest RRU and the HUB processing time delay through one-time measurement. In another aspect, the operation is simple and does not need to be set, each stage of HUB calculates the farthest distance, delays the measurement signal and data, and a user does not need to consider the set fixed time delay. On the other hand, in the step-by-step transmission process, the working modes of all the stages of HUBs are the same, the subordination relation among different stages does not need to be acquired, and the number of cascade stages which can be realized does not need to be limited.

Based on the foregoing embodiments, an embodiment of the present application further provides a delay processing apparatus, where the apparatus includes each module and each unit included in each module, and the delay processing apparatus may be implemented by a processor in an electronic device; of course, the implementation can also be realized through a specific logic circuit; in the implementation process, the Processor may be a Central Processing Unit (CPU), a microprocessor Unit (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like.

Fig. 7 is a schematic structural diagram of a delay processing apparatus according to an embodiment of the present application, and as shown in fig. 7, the apparatus 700 includes a receiving module 701, a sending module 702, and a determining module 703, where:

a receiving module 701, configured to receive, by the first extension unit HUB, a delay measurement signal sent by the baseband processing unit BBU; receiving a time delay measurement signal returned by the signal receiving equipment;

a sending module 702, configured to send the delay measurement signal to at least one signal receiving device; the first extension unit HUB is cascaded with the signal receiving device, and the signal receiving device is a lower device of the first extension unit HUB;

a determining module 703, configured to determine, based on the returned delay measurement signal, a delay of the delay measurement signal to each of the signal receiving apparatuses.

In some possible embodiments, the determining module 703 is further configured to: acquiring data processing time delay of a first extension unit HUB; determining the optical fiber time delay from the first extension unit HUB to each signal receiving device based on the returned time delay measurement signal; and determining the time delay from the time delay measurement signal to each signal receiving device based on the optical fiber time delay and the data processing time delay of the first extension unit HUB.

In some possible embodiments, the at least one signal receiving apparatus comprises: at least one RRU; each RRU is a next-stage device of the first expansion unit HUB; the determining module 703 is further configured to: determining a first measurement value of the optical fiber delay from the first extension unit HUB to each radio remote unit RRU based on the returned delay measurement signal; and determining the maximum value of at least one first measurement value as the fiber delay from the first extension unit HUB to each RRU.

In some possible embodiments, the at least one signal receiving apparatus further comprises: at least one second expansion unit HUB; the second extension unit HUB is cascaded with at least one radio remote unit RRU, and each radio remote unit RRU is a lower-level device of the second extension unit HUB; the determining module 703 is further configured to: determining a second measurement value of the optical fiber delay from the second extension unit HUB to each radio remote unit RRU based on the returned delay measurement signal; determining the maximum value of at least one second measurement value as the fiber delay from the second extension unit HUB to each radio remote unit RRU; and determining the optical fiber time delay from the first extension unit HUB to each RRU based on the optical fiber time delay from the second extension unit HUB to each RRU, the data processing time delay from the second extension unit HUB and the optical fiber time delay from the second extension unit HUB to the first extension unit HUB.

In some possible embodiments, the sending module 702 is further configured to: and after delaying the data processing delay of the first extension unit HUB, sending the delay measurement signal to at least one signal receiving device.

In some possible embodiments, the determining module 703 is further configured to: determining a compensated time delay for each of the signal receiving devices based on the time delay of the time delay measurement signal to each of the signal receiving devices.

In some possible embodiments, the sending module 702 is configured to: the time delay measurement signal is delayed by two times of the data processing time delay and the set optical fiber time delay and then is sent to the baseband processing unit BBU; the set optical fiber time delay is the maximum value of the optical fiber time delay from the first extension unit HUB to any one of the remote radio units.

Here, it should be noted that: the above description of the apparatus embodiments, similar to the above description of the method embodiments, has similar beneficial effects as the method embodiments. For technical details not disclosed in the embodiments of the apparatus of the present application, reference is made to the description of the embodiments of the method of the present application for understanding.

It should be noted that, in the embodiment of the present application, if the modeling method based on the very long behavior sequence is implemented in the form of a software functional module and is sold or used as an independent product, it may also be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling an electronic device (which may be a smartphone, a tablet computer, or the like) to perform all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the present application are not limited to any specific combination of hardware and software.

Correspondingly, the present application provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the latency processing method in any of the foregoing embodiments.

Correspondingly, in an embodiment of the present application, a chip is further provided, where the chip includes a programmable logic circuit and/or program instructions, and when the chip runs, the chip is configured to implement the steps in any of the latency processing methods in the foregoing embodiments.

Correspondingly, in an embodiment of the present application, a computer program product is further provided, and when the computer program product is executed by a processor of an electronic device, the computer program product is configured to implement the steps in the latency processing method in any one of the foregoing embodiments.

Based on the same technical concept, embodiments of the present application provide an electronic device, which is configured to implement the time delay processing method described in the foregoing method embodiments. Fig. 8 is a hardware entity diagram of an electronic device according to an embodiment of the present application, as shown in fig. 8, the electronic device 800 includes a memory 810 and a processor 820, the memory 810 stores a computer program that can be executed on the processor 820, and the processor 820 implements steps in any of the latency processing methods according to the embodiment of the present application when executing the computer program.

The Memory 810 is configured to store instructions and applications executable by the processor 820, and may also buffer data (e.g., image data, audio data, voice communication data, and video communication data) to be processed or already processed by the processor 820 and modules in the electronic device, and may be implemented by a FLASH Memory (FLASH) or a Random Access Memory (RAM).

The processor 820, when executing the program, implements the steps of the latency processing method of any of the above. The processor 820 generally controls the overall operation of the electronic device 800.

The Processor may be at least one of an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a Central Processing Unit (CPU), a controller, a microcontroller, and a microprocessor. It is understood that the electronic device implementing the above-described processor function may be other electronic devices, and the embodiments of the present application are not limited in particular.

The computer storage medium/Memory may be a Memory such as a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read Only Memory (EPROM), an Electrically Erasable Programmable Read Only Memory (EEPROM), a magnetic Random Access Memory (FRAM), a Flash Memory (Flash Memory), a magnetic surface Memory, an optical Disc, or a Read Only Disc (CD-ROM); and may be various electronic devices such as mobile phones, computers, tablet devices, personal digital assistants, etc., including one or any combination of the above-mentioned memories.

Here, it should be noted that: the above description of the storage medium and device embodiments, similar to the description of the method embodiments above, has similar beneficial effects as the method embodiments. For technical details not disclosed in the embodiments of the storage medium and apparatus of the present application, reference is made to the description of the embodiments of the method of the present application for understanding.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application. The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units; can be located in one place or distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present application.

In addition, all functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

Alternatively, the integrated units described above in the present application may be stored in a computer-readable storage medium if they are implemented in the form of software functional modules and sold or used as independent products. Based on such understanding, the technical solutions of the embodiments of the present application may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing an automatic test line of a device to perform all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a removable storage device, a ROM, a magnetic or optical disk, or other various media that can store program code.

The methods disclosed in the several method embodiments provided in the present application may be combined arbitrarily without conflict to arrive at new method embodiments.

The features disclosed in the several method or apparatus embodiments provided herein may be combined in any combination to arrive at a new method or apparatus embodiment without conflict.

The above description is only for the embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of latency processing, the method comprising:

a first extension unit HUB receives a time delay measurement signal sent by a baseband processing unit BBU;

transmitting the delay measurement signal to at least one signal receiving device; the first extension unit HUB is cascaded with the signal receiving device, and the signal receiving device is a lower device of the first extension unit HUB;

receiving a time delay measurement signal returned by the signal receiving equipment;

and determining the time delay of the time delay measuring signal to each signal receiving device based on the returned time delay measuring signals.

2. The method of claim 1, said determining a time delay of said time delay measurement signal to each of said signal receiving devices based on said returned time delay measurement signal, comprising:

acquiring data processing time delay of a first extension unit HUB;

determining the optical fiber time delay from the first extension unit HUB to each signal receiving device based on the returned time delay measurement signal;

and determining the time delay from the time delay measurement signal to each signal receiving device based on the optical fiber time delay and the data processing time delay of the first extension unit HUB.

3. The method of claim 2, the at least one signal receiving device comprising: at least one radio remote unit RRU; each RRU is a next-stage device of the first expansion unit HUB; said determining the optical fibre delay of said first extension unit HUB to each of said signal receiving devices based on said returned delay measurement signals comprises:

determining a first measurement value of the optical fiber delay from the first extension unit HUB to each radio remote unit RRU based on the returned delay measurement signal;

and determining the maximum value of at least one first measurement value as the fiber delay from the first extension unit HUB to each RRU.

4. The method of claim 2, the at least one signal receiving device further comprising: at least one second expansion unit HUB; the second extension unit HUB is cascaded with at least one radio remote unit RRU, and each radio remote unit RRU is a lower-level device of the second extension unit HUB; said determining the optical fiber delay from said first extension unit HUB to each of said signal receiving devices based on said returned delay measurement signals comprises:

determining a second measurement value of the optical fiber delay from the second extension unit HUB to each RRU based on the returned delay measurement signal;

determining the maximum value of at least one second measurement value as the fiber delay from the second extension unit HUB to each radio remote unit RRU;

and determining the optical fiber time delay from the first extension unit HUB to each RRU based on the optical fiber time delay from the second extension unit HUB to each RRU, the data processing time delay from the second extension unit HUB and the optical fiber time delay from the second extension unit HUB to the first extension unit HUB.

5. The method of any of claims 2 to 4, wherein transmitting the delay measurement signal to at least one signal receiving device comprises:

and after delaying the data processing delay of the first extension unit HUB, sending the delay measurement signal to at least one signal receiving device.

6. The method of any of claims 1 to 4, further comprising:

determining a compensated time delay for each of the signal receiving devices based on the time delay of the time delay measurement signal to each of the signal receiving devices.

7. The method of claim 5, further comprising:

the time delay measurement signal is delayed by two times of the data processing time delay and the set optical fiber time delay and then is sent to the baseband processing unit BBU; the set optical fiber time delay is the maximum value of the optical fiber time delay from the first extension unit HUB to any one of the remote radio units.

8. A latency processing apparatus, the apparatus comprising:

a receiving module 701, configured to receive, by a first extension unit HUB, a delay measurement signal sent by a baseband processing unit BBU; receiving a time delay measurement signal returned by the signal receiving equipment;

9. An electronic device comprising a memory and a processor, the memory storing a computer program operable on the processor, the processor implementing the steps of the method of any one of claims 1 to 7 when executing the program.

10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.