CN111884790A - Navigation pilot signal downlink transmission method for reducing bandwidth occupancy - Google Patents
Navigation pilot signal downlink transmission method for reducing bandwidth occupancy Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/024—Guidance services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/33—Services specially adapted for particular environments, situations or purposes for indoor environments, e.g. buildings
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
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Abstract
The invention discloses a downlink signal transmission method for reducing bandwidth occupancy, and relates to a control method for transmitting data to a radio frequency antenna integrated unit by a baseband processing unit. The relay expansion module is connected with the baseband processing unit through a network cable and is connected with at least two radio frequency antenna integrated units through the network cable. The method is characterized in that the loading of data through an idle scheduling period in the transmission period is set by setting the transmission period and the offset, and the synchronous loading of the control data of the plurality of radio frequency antenna integrated units is realized by partitioning the idle scheduling period, so that the data transmission and the command issuing can be simultaneously performed on the used radio frequency antenna integrated units under the condition of once transmission. The method can reduce the occupancy rate of the bandwidth and improve the efficiency of the bandwidth when updating the downlink transmission of the navigation pilot signals of all the radio frequency antenna integrated units in the common cell in real time.
Description
The application is a divisional application of a distributed indoor navigation system and a downlink signal transmission method thereof, and is a primary application number 201811212811.2, application date 2018-10-18.
Technical Field
The invention relates to the field of wireless communication, in particular to a navigation pilot signal downlink transmission method for reducing bandwidth occupancy.
Background
At present, the positioning technology is more and more attracting attention of people, applications based on location services are developed vigorously and permeate into aspects of social life, such as navigation services, location-related search and the like, so that the life convenience is greatly improved, and a mobile communication network is widely available and high in user permeability, so that a positioning navigation scheme based on the mobile communication network is regarded as an optimal scheme for indoor navigation.
Currently, the most common coverage mode of an indoor mobile communication network is to use a distributed system for coverage, and the distributed system generally comprises BBU + RHUB + PRRU, wherein the BBU provides an information source, and the RHUB provides an extended function for connection between the BBU and the PRRU, so that one BBU can be connected with more PRRUs, and the PRRU is responsible for remote coverage, thereby realizing low-power multipoint deployment and improving indoor coverage effectiveness. In consideration of construction convenience, the RHUB and the PRRU mostly adopt network cable transmission, which is limited by network cable bandwidth, and the transmission and reception signals of the PRRUs in the coverage area of the common cell are completely the same, i.e. the bandwidth required by the current LTE dual-antenna system for transmitting IQ is 20.48Mbps (sampling rate) × 24(IQ total bit width) × 2 (dual antenna) ═ 983.04Mbps, and the transmission bandwidth of one network is 1000Mbps, so the network cable bandwidth is occupied. However, for the navigation network, each PRRU is required to transmit different navigation pilot signals, so as to provide a multi-anchor reference signal for terminal navigation measurement, thereby improving accurate positioning. However, in the prior art, when the common cell PRRU transmit-receive signals are completely the same, the front-end transmission bandwidth is already occupied, and the downlink transmission bandwidth when each PRRU transmits different navigation pilot signals under the common cell cannot be borne at all, so that the downlink navigation scheme based on the mobile communication network is difficult to develop. Therefore, it is an urgent requirement to design a distributed indoor navigation system and a downlink signal transmission method thereof.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the downlink transmission method of the navigation pilot signal for reducing the bandwidth occupancy rate is provided, which solves the problem that the occupied bandwidth is more when the PRRU receives and sends signals in the common cell.
The technical scheme of the technical problem to be solved by the invention is as follows:
a downlink transmission method of navigation pilot signals for reducing bandwidth occupancy is used for transmitting data from a baseband processing unit to a radio frequency antenna integrated unit, and is characterized in that:
step 1.1, configuring a transmitting period P0 and an OFFSET OFFSET0 of a navigation pilot signal of a baseband processing unit, and sending the navigation pilot signal to a radio frequency antenna integrated unit in a broadcasting mode;
the OFFSET OFFSET0 is a set time period and is used for simultaneously starting the radio frequency antenna integrated unit to transmit the navigation pilot signal after the appointed transmission period P0;
step 1.2, the baseband processing unit determines a downlink idle scheduling period P1 according to the number N of the radio frequency antenna integrated units under the common cell;
the duration of the idle scheduling period P1 is equal to the duration/N of the transmission period P0 rounded down, and the formula is:
idle scheduling period
Then, determining the corresponding relation between each idle scheduling period P1 and each radio frequency antenna integrated unit in the same transmission period P0, and sending the corresponding relation to the radio frequency antenna integrated unit in a broadcasting way;
step 1.3, the baseband processing unit sets a plurality of time sections in each idle scheduling period P1, including an idle scheduling section and a plurality of common data signal sections, the idle scheduling section does not perform resource scheduling, and sends the idle scheduling period information in the P1 period to the radio frequency antenna integrated unit in a broadcasting manner,
step 1.4, the radio frequency antenna integrated unit receives the data broadcast in the steps 1.1 to 1.3, and the radio frequency antenna integrated unit is configured to enable each radio frequency antenna integrated unit to correspond to the only idle scheduling period P1 in the transmission period P0;
step 2, the baseband processing unit generates navigation pilot signals corresponding to the radio frequency antenna integrated units, loads the navigation pilot signals into a corresponding idle scheduling period P1 in a transmission period P0, and sends the navigation pilot signals to all the radio frequency antenna integrated units in a broadcast mode;
and 3, based on the corresponding relation between each idle scheduling period P1 and each radio frequency antenna integrated unit in the same transmission period P0 determined in the step 1.2, caching the navigation pilot signals belonging to the radio frequency antenna integrated unit by the radio frequency antenna integrated unit, and sending the navigation pilot signals at the moment of the transmission period P0 and the OFFSET OFFSET 0.
Preferably, the control method of the baseband processing unit is as follows:
configuring a transmission period P0 and an offset through a transmission period and offset configuration module, and sending the transmission period P0 and the offset to the radio frequency antenna integrated unit in a broadcasting manner;
step 2, the base band processing unit carries out resource scheduling through the resource scheduling module,
firstly, an idle scheduling period P1 is calculated
Wherein N is the number of PRRUs under the co-cell;
then, the baseband processing unit determines the corresponding relation between each idle scheduling period P1 in the same transmission period P0 and each radio frequency antenna integrated unit, and sends the corresponding relation to the radio frequency antenna integrated unit in a broadcasting mode;
finally, the idle scheduling period P1 is divided into time sections, including an idle scheduling section and a plurality of common data signal sections, and the idle scheduling section in each idle scheduling period P1 is sent to the radio frequency antenna integrated unit in a broadcasting way without any resource allocation;
step 3, the baseband processing unit generates navigation pilot signals through a navigation pilot signal generation module, wherein the navigation pilot signals correspond to the radio frequency antenna integrated units one to one;
and 4, loading different navigation pilot signals to the corresponding idle scheduling section of the idle scheduling period P1 by the baseband processing unit through the navigation pilot signal transmission module, and sending the navigation pilot signals to the radio frequency antenna integrated unit in a broadcasting manner.
Preferably, the control method of the rf antenna integrated unit includes:
step 2, the radio frequency antenna integrated unit receives the navigation pilot frequency signal corresponding to the radio frequency antenna integrated unit in an idle scheduling section in an idle scheduling period P1 corresponding to the navigation pilot frequency signal receiving module through the navigation pilot frequency signal receiving module, and stores the acquired navigation pilot frequency signal in a self memory;
and 3, the navigation pilot signal air interface transmitting module of the radio frequency antenna integrated unit transmits the navigation pilot signal at fixed time in the transmitting period P0 and the OFFSET OFFSET 0.
Preferably, the connection mode of the relay expansion module and the radio frequency antenna integrated unit is as follows:
at least comprises two parallel loops connected with the relay expansion module, the parallel loops comprise at least two radio frequency antenna integrated units connected in series,
the numbering method of the radio frequency antenna integrated unit comprises the following steps:
the number of the radio frequency antenna integrated unit comprises a relay expansion module label F, a parallel label M and a serial label K,
the number of the relay expansion module is the address number of the relay expansion module connected with the radio frequency antenna integrated unit, the parallel number is used for representing a parallel loop, the serial number is used for identifying the radio frequency antenna integrated unit connected in series,
the method for determining the number N of the radio frequency antenna integrated units comprises the following steps:
firstly, a baseband processing unit acquires a number returned by a radio frequency antenna integrated unit through broadcasting;
then, maximum values Fmax, Mmax and Kmax of the label F of the relay expansion module, the parallel label M of the relay expansion module and the serial label K of the relay expansion module are respectively judged,
and finally, the number N of the radio frequency antenna integrated units is equal to Fmax multiplied by Mmax multiplied by Kmax.
Preferably, in step 1.3, the baseband processing unit sets X time segments in each idle scheduling period P1, where X is a positive integer, and includes an idle scheduling segment and X-1 normal data signal segments.
The invention has the beneficial effects that:
by adopting the method of the invention, the downlink transmission of the navigation pilot signals of all PRRUs under the common cell can be updated in real time without increasing the downlink transmission bandwidth, the utilization rate of the bandwidth is reduced, the efficiency of the bandwidth is improved, different navigation pilot signals are sent by all PRRUs at the same moment, a plurality of reference anchor points are provided for terminal navigation, and the positioning accuracy based on the mobile communication network is improved.
Drawings
Figure 1 is a topological block diagram of devices according to one embodiment of the present invention,
figure 2 is a schematic diagram of BBU and PRRU structures and information flow trends in one embodiment of the invention,
fig. 3 is a diagram of a relationship between a transmission period and an idle scheduling period according to an embodiment of the present invention.
Detailed Description
In order to make the technical solution and the advantages of the present invention clearer, the following explains embodiments of the present invention in further detail.
A navigation pilot signal downlink transmission method for reducing bandwidth occupation ratio is used for realizing that a baseband processing unit (BBU) controls a radio frequency antenna integrated unit (PRRU) to transmit navigation pilot signals. For example, an invention named as a distributed antenna communication system with application number 201410342556.9, or an invention named as a BBU plus RRU networking architecture with application number 201320230782.9 is a distributed coverage communication network. The invention is applied to an indoor positioning navigation system, and is also suitable for the communication system with distributed coverage to realize the positioning and navigation of the terminal equipment.
As shown in fig. 1, the distributed indoor navigation system of the present invention includes a baseband processing unit BBU, a relay extension module RHUB, and a radio frequency antenna integrated unit PRRU. At least one relay extension module RHUB is arranged, and each relay extension module RHUB is connected with the baseband processing unit BBU through a network cable. The relay expansion module RHUB is connected with at least two radio frequency antenna integrated units PRRU through network cables. Because the distance between each node is smaller in a large indoor structure, the connection of each device can be realized by adopting a network cable.
The baseband processing unit BBU is provided with a resource scheduling module, a transmission period and offset configuration module, a navigation pilot signal generation module and a navigation pilot signal transmission module. Each module is an application program running in the processor and acts the result of the running data on the corresponding hardware device. The resource scheduling module is used for realizing management of an idle scheduling period P1 and an idle power section in the transmission period P0. The transmission period or OFFSET configuration module is used to implement the configuration of the transmission period P0 and the configuration of the OFFSET 0. The navigation pilot signal generating module and the navigation pilot signal transmission module are respectively used for generating navigation pilot signals and outputting and sending the navigation pilot signals. The radio frequency antenna integrated unit PRRU is provided with a navigation pilot signal receiving module and a navigation pilot signal air interface transmitting module. The navigation pilot signal receiving module and the navigation pilot signal air interface transmitting module are used for receiving the navigation pilot signals and transmitting the navigation pilot signals in a wireless electromagnetic wave mode.
The invention discloses a downlink signal transmission method in a distributed indoor navigation system, which comprises the following steps:
step 1.1, configuring a transmission period P0 and an OFFSET OFFSET0 of a BBU navigation pilot signal, and sending the transmission period P0 and the OFFSET OFFSET0 to a PRRU (radio frequency antenna integrated unit) in a broadcasting mode. The transmission period P0 is a cycle period during which the radio frequency antenna integrated unit PRRU transmits the navigation pilot signal in the form of electromagnetic waves. The OFFSET0 is a set time period for designating that the integrated radio frequency antenna unit PRRU is simultaneously activated to transmit the pilot signal after the transmission period P0. The transmission period P0 and the OFFSET0 determine the time when the PRRU module of the integrated radio frequency antenna unit transmits a signal.
Step 1.2, the base band processing unit BBU determines a downlink idle scheduling period P1 according to the number N of the radio frequency antenna integrated units PRRU under the common cell. The number of the radio frequency antenna integrated units PRRUs under the common cell is the number of the radio frequency antenna integrated units PRRUs which carry out data communication with the same baseband processing unit BBU.
Because the bandwidth of the network cable is not enough due to the fact that the navigation pilot signals are simultaneously transmitted in the same period, the navigation pilot signals are transmitted from the baseband processing unit BBU to the radio frequency antenna integrated unit PRRU in a multi-period interval mode. Therefore, N time segments, i.e., N idle scheduling periods P1, are required in the transmission period P0, so that the duration of the idle scheduling period P1 is equal to the duration/N of the transmission period P0 rounded down, and the formula is:
idle scheduling period
And then, determining the corresponding relation between each idle scheduling period P1 and each radio frequency antenna integrated unit PRRU in the same transmission period P0, and sending the corresponding relation to the radio frequency antenna integrated unit PRRU in a broadcasting mode.
Step 1.3, the baseband processing unit BBU sets a plurality of time sections in each idle scheduling period P1, including an idle scheduling section and a plurality of normal data signal sections. An idle scheduling section does not perform resource scheduling, and a common data signal section is used for transmitting data information, so that the method realizes the issuing of the navigation pilot signal under the condition of not influencing data communication. And then the base band processing unit BBU sends the idle scheduling period information in the period of P1 to the PRRU in a broadcasting mode.
Preferably, the baseband processing unit BBU sets X time segments in each idle scheduling period P1, including an idle scheduling segment and X-1 normal data signal segments, where X is a positive integer greater than or equal to 2.
More preferably, as shown in FIG. 3, X has a value of 4.
Step 1.4, the radio frequency antenna integrated unit PRRU receives the data broadcast by the baseband processing unit BBU in steps 1.1 to 1.3, and configures the radio frequency antenna integrated unit PRRU so that each radio frequency antenna integrated unit PRRU corresponds to the unique idle scheduling period P1 in the transmission period P0.
And 2, the base band processing unit BBU produces navigation pilot signals corresponding to the radio frequency antenna integrated unit PRRU, loads the navigation pilot signals into a corresponding idle scheduling period P1 in a transmitting period P0, and sends the navigation pilot signals to all the radio frequency antenna integrated units PRRU in a broadcasting mode.
And step 3, based on the corresponding relation between each idle scheduling period P1 and each radio frequency antenna integrated unit PRRU in the same transmission period P0 determined in the step 1.2, the radio frequency antenna integrated unit PRRU caches the navigation pilot signals belonging to the radio frequency antenna integrated unit PRRU, and sends the navigation pilot signals at the moment of the transmission period P0 and the OFFSET OFFSET 0.
Preferably, the baseband processing unit BBU is provided with a resource scheduling module, a transmission period and offset configuration module, a navigation pilot signal generation module, and a navigation pilot signal transmission module. As shown in fig. 2, the transmission period and offset configuration module transmits the generated data to the resource scheduling module and the navigation pilot signal transmission module. The resource scheduling module transmits the generated data to the navigation pilot signal transmission module, and the navigation pilot signal production module loads the navigation pilot signal information into the navigation pilot signal transmission module. And all modules in the baseband processing unit BBU receive the scheduling of the central controller in a unified way.
The control method of the BBU comprises the following steps:
configuring a transmission period P0 and an offset through a transmission period and offset configuration module, and sending the transmission period P0 and the offset to a radio frequency antenna integrated unit PRRU in a broadcasting mode;
step 2, the base band processing unit BBU carries out resource scheduling through the resource scheduling module,
firstly, an idle scheduling period P1 is calculated
Wherein N is the number of PRRUs under the co-cell;
then, the baseband processing unit BBU determines the corresponding relation between each idle scheduling period P1 and each radio frequency antenna integrated unit PRRU in the same transmission period P0, and sends the corresponding relation to the radio frequency antenna integrated unit PRRU in a broadcasting mode;
finally, the idle scheduling period P1 is divided into time sections, including an idle scheduling section and a plurality of common data signal sections, and the idle scheduling section in each idle scheduling period P1 is sent to the radio frequency antenna integrated unit PRRU in a broadcasting way without any resource allocation;
step 3, the baseband processing unit BBU generates navigation pilot signals through a navigation pilot signal generation module, wherein the navigation pilot signals correspond to the radio frequency antenna integrated unit PRRU one by one;
and step 4, the baseband processing unit BBU loads different navigation pilot signals to the corresponding idle scheduling section of the idle scheduling period P1 through the navigation pilot signal transmission module, and sends the idle scheduling section to the radio frequency antenna integrated unit PRRU in a broadcasting mode.
Preferably, the data generated by the navigation pilot signal receiving module of the radio frequency antenna integrated unit PRRU is transmitted to the navigation pilot signal air interface transmitting module. The control method of the radio frequency antenna integrated unit (PRRU) comprises the following steps:
step 2, the radio frequency antenna integrated unit PRRU receives the navigation pilot frequency signal corresponding to the radio frequency antenna integrated unit PRRU in the idle scheduling section in the idle scheduling period P1 corresponding to the navigation pilot frequency signal through the navigation pilot frequency signal receiving module, and stores the acquired navigation pilot frequency signal in a memory of the radio frequency antenna integrated unit PRRU;
and step 3, the navigation pilot signal air interface transmitting module of the radio frequency antenna integrated unit PRRU transmits the navigation pilot signal at fixed time in the transmitting period P0 and the OFFSET OFFSET 0.
Preferably, the connection mode of the unit PRRU integrating the relay extension module RHUB and the radio frequency antenna is as follows:
at least two parallel loops connected with the relay expansion module RHUB are included, and each parallel loop comprises at least two radio frequency antenna integrated units PRRU connected in series. The numbering method of the radio frequency antenna integrated unit PRRU comprises the following steps:
the number of the radio frequency antenna integrated unit PRRU comprises a relay expansion module label F, a parallel label M and a serial label K. The relay expansion module label F is the address number of the relay expansion module RHUB connected with the radio frequency antenna integrated unit PRRU, the parallel label is used for representing the loop number of the parallel loop, and the serial label is used for identifying the distinguishing number of the radio frequency antenna integrated unit PRRU connected together in series. The method for determining the number N of the radio frequency antenna integrated units PRRU comprises the following steps:
firstly, a baseband processing unit (BBU) acquires a number returned by a radio frequency antenna integrated unit (PRRU) through broadcasting;
then, maximum values Fmax, Mmax and Kmax of the label F of the relay expansion module, the parallel label M of the relay expansion module and the serial label K of the relay expansion module are respectively judged,
finally, the number N of the radio frequency antenna integrated units PRRU is Fmax × Mmax × Kmax.
By utilizing the invention and the downlink signal transmission method recorded by the invention, the radio frequency antenna integrated unit PRRU which transmits different signals can receive respective information instruction and data in one transmission period P0, and then transmit the navigation pilot signal at the same time according to the information instruction and the data, thereby improving the instantaneity and the accuracy of real-time navigation.
In summary, the present invention is only a preferred embodiment, and is not intended to limit the scope of the present invention, and various changes and modifications can be made by workers in the light of the above description without departing from the technical spirit of the present invention. The technical scope of the present invention is not limited to the content of the specification, and all equivalent changes and modifications in the shape, structure, characteristics and spirit described in the scope of the claims of the present invention are included in the scope of the claims of the present invention.
Claims (5)
1. A downlink transmission method of navigation pilot signals for reducing bandwidth occupancy is used for transmitting data from a baseband processing unit (BBU) to a radio frequency antenna integrated unit (PRRU), and is characterized in that:
step 1, system configuration, specifically:
step 1.1, configuring a transmitting period P0 and an OFFSET OFFSET0 of a navigation pilot signal of a baseband processing unit (BBU), and sending the navigation pilot signal to a radio frequency antenna integrated unit (PRRU) in a broadcasting mode;
the OFFSET OFFSET0 is a set time period and is used for simultaneously starting a radio frequency antenna integrated unit (PRRU) to transmit a navigation pilot signal after a designated transmission period P0;
step 1.2, a Base Band Unit (BBU) determines a downlink idle scheduling period P1 according to the number N of radio frequency antenna integrated units (PRRUs) under a common cell;
the duration of the idle scheduling period P1 is equal to the duration/N of the transmission period P0 rounded down, and the formula is:
then, determining the corresponding relation between each idle scheduling period P1 and each radio frequency antenna integrated unit (PRRU) in the same transmission period P0, and sending the corresponding relation to the radio frequency antenna integrated unit (PRRU) in a broadcasting mode;
step 1.3, the baseband processing unit (BBU) sets a plurality of time sections in each idle scheduling period P1, including an idle scheduling section and a plurality of ordinary data signal sections, the idle scheduling section does not perform resource scheduling, and sends the idle scheduling period information in the P1 period to a radio frequency antenna integrated unit (PRRU) in a broadcasting mode,
step 1.4, the radio frequency antenna integrated unit (PRRU) receives the data broadcast in the steps 1.1 to 1.3, and configures the radio frequency antenna integrated unit (PRRU) to enable each radio frequency antenna integrated unit (PRRU) to correspond to the unique idle scheduling period P1 in the transmission period P0;
step 2, the base band processing unit (BBU) produces navigation pilot signals corresponding to the radio frequency antenna integrated unit (PRRU), loads the navigation pilot signals into a corresponding idle scheduling period P1 in a transmitting period P0, and sends the navigation pilot signals to all the radio frequency antenna integrated units (PRRU) in a broadcasting mode;
and 3, based on the corresponding relation between each idle scheduling period P1 and each radio frequency antenna integrated unit (PRRU) in the same transmission period P0 determined in the step 1.2, the radio frequency antenna integrated unit (PRRU) caches the navigation pilot signals belonging to the radio frequency antenna integrated unit (PRRU), and sends the navigation pilot signals at the moment points of the transmission period P0 and the OFFSET OFFSET 0.
2. The method for downlink transmission of pilot signals with reduced bandwidth occupation according to claim 1, wherein:
the control method of the baseband processing unit (BBU) comprises the following steps:
step 1, configuring a baseband processing unit (BBU),
configuring a transmission period P0 and an offset through a transmission period and offset configuration module, and sending the transmission period P0 and the offset to a radio frequency antenna integrated unit (PRRU) in a broadcasting mode;
step 2, the base band processing unit (BBU) carries out resource scheduling through the resource scheduling module,
first, an idle scheduling period P1 is calculated,
wherein N is the number of PRRUs under the co-cell;
then, the base band processing unit (BBU) determines the corresponding relation between each idle scheduling period P1 and each radio frequency antenna integrated unit (PRRU) in the same transmission period P0, and sends the corresponding relation to the radio frequency antenna integrated unit (PRRU) in a broadcasting mode;
finally, the idle scheduling period P1 is divided into time sections, including an idle scheduling section and a plurality of common data signal sections, and the idle scheduling section in each idle scheduling period P1 is sent to a radio frequency antenna integrated unit (PRRU) in a broadcasting way without any resource allocation;
step 3, a baseband processing unit (BBU) generates navigation pilot signals through a navigation pilot signal generating module, wherein the navigation pilot signals correspond to radio frequency antenna integrated units (PRRU) one by one;
and step 4, the baseband processing unit (BBU) loads different navigation pilot signals to the corresponding idle scheduling section of the idle scheduling period P1 through the navigation pilot signal transmission module, and sends the idle scheduling section to the radio frequency antenna integrated unit (PRRU) in a broadcasting mode.
3. The method for downlink transmission of pilot signals with reduced bandwidth occupation according to claim 1, wherein:
the control method of the radio frequency antenna integrated unit (PRRU) comprises the following steps:
step 1, a radio frequency antenna integrated unit (PRRU) receives a broadcast signal of a baseband processing unit (BBU), determines an idle scheduling period P1 and idle scheduling section information corresponding to the radio frequency antenna integrated unit (PRRU), and stores the acquired information;
step 2, the radio frequency antenna integrated unit (PRRU) receives the navigation pilot frequency signal corresponding to the radio frequency antenna integrated unit (PRRU) in the idle scheduling section in the idle scheduling period P1 corresponding to the navigation pilot frequency signal receiving module through the navigation pilot frequency signal receiving module, and stores the acquired navigation pilot frequency signal in a memory of the radio frequency antenna integrated unit (PRRU);
and step 3, the navigation pilot signal air interface transmitting module of the radio frequency antenna integrated unit (PRRU) transmits the navigation pilot signal at fixed time in the transmitting period P0 and the OFFSET OFFSET 0.
4. The method for downlink transmission of pilot signals with reduced bandwidth occupation according to claim 1, wherein:
the connection mode of the relay expansion module (RHUB) and the radio frequency antenna integrated unit (PRRU) is as follows:
comprising at least two parallel loops connected to a repeater expansion module (RHUB), said parallel loops comprising at least two radio frequency antenna integrated units (PRRU) connected in series,
the numbering method of the radio frequency antenna integrated unit (PRRU) comprises the following steps:
the number of the radio frequency antenna integrated unit (PRRU) comprises a relay expansion module label F, a parallel label M and a serial label K,
the trunk extension module reference number is an address number of a trunk extension module (RHUB) connected to a radio frequency antenna integrated unit (PRRU), the parallel reference number is used to indicate a parallel loop, the serial reference number is used to identify a radio frequency antenna integrated unit (PRRU) connected in series,
the method for determining the number N of the radio frequency antenna integrated units (PRRU) comprises the following steps:
firstly, a baseband processing unit (BBU) acquires a number returned by a radio frequency antenna integrated unit (PRRU) through broadcasting;
then, maximum values Fmax, Mmax and Kmax of the label F of the relay expansion module, the parallel label M of the relay expansion module and the serial label K of the relay expansion module are respectively judged,
finally, the number N of radio frequency antenna integrated units (PRRU) is Fmax × Mmax × Kmax.
5. The method for downlink transmission of pilot signals with reduced bandwidth occupation according to claim 1, wherein:
step 1.3, the baseband processing unit (BBU) sets X time sections in each idle scheduling period P1, including an idle scheduling section and X-1 ordinary data signal sections, where X is a positive integer.
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| CN102573059B (en) * | 2012-01-16 | 2014-12-31 | 新邮通信设备有限公司 | Method and system for realizing precise positioning of user equipment (UE) |
| CN105635980A (en) * | 2014-10-31 | 2016-06-01 | 华为技术有限公司 | Uplink signal processing method, device and system |
| CN105992220B (en) * | 2015-03-04 | 2020-04-17 | 上海诺基亚贝尔股份有限公司 | Method and baseband unit for intra-cell frequency reuse of indoor wireless network |
| CN106572435B (en) * | 2015-10-08 | 2019-11-12 | 华为技术有限公司 | The method and apparatus of dispatch terminal equipment |
| CN106535255B (en) * | 2016-10-27 | 2019-10-29 | 北京邮电大学 | A kind of scheduling of resource and control method and device based on C-RAN |
-
2018
- 2018-10-18 CN CN202010758973.7A patent/CN111884790A/en not_active Withdrawn
- 2018-10-18 CN CN201811212811.2A patent/CN109218979B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN109218979A (en) | 2019-01-15 |
| CN109218979B (en) | 2020-09-04 |
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