CN117098141B

CN117098141B - Chamber division coverage system and method based on extended leather base station

Info

Publication number: CN117098141B
Application number: CN202311332038.4A
Authority: CN
Inventors: 宋照红
Original assignee: Shenzhen Guoren Wireless Communication Co Ltd
Current assignee: Shenzhen Guoren Wireless Communication Co Ltd
Priority date: 2023-10-16
Filing date: 2023-10-16
Publication date: 2024-02-09
Anticipated expiration: 2043-10-16
Also published as: CN117098141A

Abstract

The invention relates to a room coverage system and a room coverage method based on an extension type leather base station, wherein the room coverage system comprises at least one baseband processing unit, a plurality of extension units connected with the baseband processing unit and a plurality of remote units connected with the extension units; a plurality of different extension units and remote units are configured in the same cell; configuring a direct connection configuration comprising a plurality of expansion units of the same cell directly connected with a baseband processing unit, and/or connecting a plurality of lower expansion units of the same cell with a central-stage expansion unit, wherein the central-stage expansion unit is connected with a central cascade configuration of the baseband processing unit, and/or connecting the lower expansion units of the same cell with an upper expansion unit step by step, and connecting the highest expansion unit with a step-by-step cascade configuration of the baseband processing unit; the indoor coverage system can flexibly meet various networking modes so as to adapt to networking requirements of different scenes.

Description

Chamber division coverage system and method based on extended leather base station

Technical Field

The invention relates to the technical field of mobile communication, in particular to a room coverage system and method based on an extended leather base station.

Background

The 5G indoor distribution system is a wireless coverage technology capable of providing seamless, high-speed and stable 5G data and voice services in large commercial buildings and public places. It is a method to enhance 5G network signal coverage and quality through indoor base stations, antennas and distribution systems.

The 5G room division technology has been widely applied to various commercial buildings and public places such as shopping centers, offices, hospitals, schools, airports, and the like. In these venues, 5G components may help users connect to 5G networks faster and more conveniently. At the same time, it can also improve indoor data transmission speed and signal quality.

The 5G digital indoor distributed system may be in the form of an extended base station system or a networking system similar thereto.

The extended leather base station adopts a digital technology, and is based on a micropower indoor coverage scheme for carrying wireless signal transmission and distribution by optical fibers or network cables, thus being one of indoor coverage enhancement schemes.

The extension type pico-base station consists of a host, an extension unit and a remote unit. The host is a BU (BaseBand Unit) of the base station, and the main functions of the host include: 1) External interfaces connected with external clock sources of a core network, a bearing network, a park network, an Extension Unit (EU) and a Remote Unit (RU) are provided, and functions of signal transmission, automatic upgrading of base station software, receiving of clocks, local shunting of the park network and the like are realized. 2) And the whole base station system for managing connection finishes the functions of uplink and downlink data processing, L1\L2\L3 layer signaling processing, resource management and operation maintenance.

The EU (extension Unit) is a digital baseband signal convergence Unit of a radio frequency far end, receives downlink data of the BU baseband Unit, forwards the downlink data to each RU far end Unit, and converges uplink data of a plurality of RU far end units and forwards the uplink data to the BU baseband Unit; a built-in DC power supply circuit supplies power to the RU remote unit.

RU (Radio Unit), namely pRRU (Pico Remote Radio Unit, remote Radio Unit), implements Radio signal processing, and the main functions include: and downlink transmission processing, namely modulating the baseband signal to a transmission frequency band and transmitting the baseband signal through an antenna. The uplink receiving process, the radio frequency signal received by the antenna is converted into a digital signal through an analog-to-digital conversion and then sent to the BBU for processing, CPRI (Common PublicRadio Interface ) data is transmitted through an optical fiber, and the CPRI data can be expanded to eCPRI data (Enhanced Common Public Radio Interface, enhanced common radio interface) later.

An indoor distribution system formed by an extended pico-base station can be divided into a plurality of cells by a plurality of RU units connected under one EU unit or combined into one cell. As shown in fig. 1, EU1 and its connected 8 RU1-RU8 are split into 2 cells Cell1 and Cell2, where the radio frequency signals of RU1-RU4 are combined in Cell1 and the radio frequency signals of RU5-RU8 are combined in Cell 2. EU2 and its connected 8 RU1-RU8 are combined into one Cell3.BU sends downlink CPRI signal of Cell1 to EU1 through optical fiber 1, EU1 distributes downlink CPRI signal of Cell1 to RU1-RU4 through optical ports 1-4 of the downlink port by branching. Uplink CPRI signals of RU1-RU4 of Cell1 are sent to EU1 through optical ports 1-4, and EU1 adds up the uplink CPRI signals of RU1-RU4 and then sends the added uplink CPRI signals to BU through optical fiber 1.

The radio frequency is combined in the EU cells, and in the same cell coverage area, the physical cell IDs received by the terminal are the same, so that the coverage area of the cells can be increased, the handover call drop among the cells is reduced, and the user experience is improved. However, EU supports 8 RU at most, and cannot expand that more RU is combined into one cell, which cannot meet flexible networking requirements.

In view of the above, it is necessary to design a room coverage system and method based on an extended pico-base station that can flexibly meet various networking modes to solve the above-mentioned problems, so as to adapt to networking requirements of different scenes.

Disclosure of Invention

The invention aims to provide an indoor coverage system and an indoor coverage method based on an extended type leather base station, which can flexibly meet various networking modes.

In order to solve the technical problems, the invention provides a room coverage system based on an extension type leather base station, which comprises at least one baseband processing unit, a plurality of extension units connected with the baseband processing unit, and a plurality of remote units connected with the extension units; a plurality of different extension units and remote units are configured in the same cell;

the configuration comprises a direct connection configuration, a central cascading configuration and/or a step-by-step cascading configuration;

According to the direct connection configuration, the extension unit completes the first uplink combination processing of uplink signals sent by different remote units in the same cell, sends the uplink signals to the baseband processing unit, completes the downlink distribution processing of downlink signals in the same cell again, and sends the downlink signals to corresponding remote units; the baseband processing unit completes the uplink combination processing of the uplink signals sent by different expansion units of the same cell, and then sends the uplink signals to the core network, and after the first downlink distribution processing of the downlink signals of the same cell is completed, the uplink signals are sent to the corresponding expansion units;

according to the central cascade configuration, after the lower-level expansion unit completes the primary uplink combination processing of uplink signals sent by different remote units of the same cell, the lower-level expansion unit completes the secondary uplink combination processing again through the central-level expansion unit, and then sends the uplink signals to the baseband processing unit, and the downlink signals of the same cell complete the primary downlink distribution processing through the central-level expansion unit, and then sends the downlink signals to the corresponding lower-level expansion unit or the lower-level expansion unit and the remote units, and then sends the downlink signals to the corresponding remote units after completing the secondary downlink distribution processing through the lower-level expansion unit;

According to the cascade configuration, after the lower-level expansion unit completes the first uplink combination processing of uplink signals sent by different remote units of the same cell, the uplink signals pass through the upper-level expansion unit step by step until the highest-level expansion unit completes the second uplink combination processing, and then are sent to the baseband processing unit, and downlink signals of the same cell pass through the highest-level expansion unit to complete the first downlink distribution processing, and then are sent to the corresponding lower-level expansion unit or the lower-level expansion unit and the remote unit, and pass through the lower-level expansion unit step by step to complete the second downlink distribution processing and then are sent to the corresponding remote unit.

Further, the baseband processing unit comprises a route configuration module, a device management module, a high-layer protocol stack module, a MAC layer processing module, a physical layer processing module, a transmission module and a forwarding card;

the route configuration module receives a cell configuration instruction, the address information of the extension unit and the remote unit generates a route association relationship between the extension unit and the remote unit and between the remote unit and a cell;

the device management module correspondingly generates cell expansion distribution and combination instructions of all cells according to the routing association relation, and sends the routing association relation and the cell expansion distribution and combination instructions to corresponding expansion units through the forwarding card;

The front-end card is communicated with the expansion unit through an optical fiber and a CPRI/eCPRI interface;

the physical layer processing module performs physical layer data link processing on the received uplink signal and then sends the uplink signal to the MAC layer processing module, and the physical layer processing module performs physical layer data link processing on the received downlink signal and then sends the downlink signal to the front transmission card;

the MAC layer processing module is used for receiving the uplink signals sent by the physical layer processing module, processing the MAC layer data and then sending the processed uplink signals to the high-layer protocol stack module, receiving the downlink signals sent by the high-layer protocol stack module, processing the MAC layer data and then sending the processed downlink signals to the physical layer processing module; according to the direct connection configuration, carrying out MAC layer uplink combining processing on uplink signals of the same cell and then sending the uplink signals to the high-layer protocol stack module, and carrying out MAC layer downlink distributing processing on downlink signals of the same cell and then sending the downlink signals to the physical layer processing module;

the high-layer protocol stack module is used for sequentially carrying out data processing on the uplink signals sent by the MAC layer processing module according to a protocol layer and then sending the uplink signals to the transmission module, and sequentially carrying out data processing on the received downlink signals according to the protocol layer and then sending the downlink signals to the MAC layer processing module;

And the transmission module is communicated with the core network through an optical fiber.

Further, the expansion unit comprises a BU (BUs) interface, a cell resource relation management module, a CPRI/eCPRI data processing module connected with the cell resource relation management module and the BU interface, a direct connection data processing module connected with the CPRI/eCPRI data processing module and the cell resource relation management module, and an optical port connected with the direct connection data processing module;

the BU interface is communicated with the baseband processing unit through an optical fiber and a CPRI/eCPRI interface;

the cell resource relation management module receives and stores the route association relation and cell expansion distribution and combination instructions through the CPRI/eCPRI data processing module; address information of the expansion unit and the connected remote unit is sent to the CPRI/eCPRI data processing module;

the optical port is communicated with the remote unit through an optical fiber, receives address information and uplink signals of the remote unit, and sends downlink signals to the remote unit;

the direct connection data processing module processes the uplink signal sent by the remote unit through a physical layer uplink and sends the uplink signal to the CPRI/eCPRI data processing module, and sends the downlink signal sent by the CPRI/eCPRI data processing module to the corresponding remote unit through a physical layer downlink; and transmitting the address information of the connected remote unit to the cell resource management module after physical layer data processing;

The CPRI/eCPRI data processing module receives the uplink signal sent by the direct-connection data processing module, performs CPRI/eCPRI data combining processing on the uplink signal of the same cell according to the direct-connection configuration, and then sends the uplink signal to the BU interface, and receives the downlink signal sent by the baseband processing unit through the BU interface, and sends the downlink signal of the same cell to the direct-connection data processing module after performing CPRI/eCPRI data distribution processing; receiving the route association relation through the BU connection port, and sending a cell expansion distribution and combination instruction to the cell resource relation management module after CPRI/eCPRI data processing; and receiving address information of the expansion unit and the connected remote unit, processing CPRI/eCPRI data, and transmitting the processed address information to the BU interface.

Further, the expansion unit comprises a BU interface, a cell resource relation management module, a CPRI/eCPRI data processing module connected with the cell resource relation management module and the BU interface, a direct connection data processing module connected with the CPRI/eCPRI data processing module and the cell resource relation management module, an optical port connected with the direct connection data processing module, a cascade data processing module connected with the cell resource relation management module and the CPRI/eCPRI data processing module, and a cascade port connected with the cascade data processing module;

the cascade port is communicated with a subordinate expansion unit or a central expansion unit through an optical fiber;

the cell resource relation management module receives and stores the route association relation and cell expansion distribution and combination instructions through the CPRI/eCPRI data processing module; address information of the expansion unit, the subordinate expansion unit and the connected remote unit is sent to the CPRI/eCPRI data processing module;

or, receiving and storing the route association relation through the CPRI/eCPRI data processing module, and expanding, distributing and combining the cell; and transmitting address information of the expansion unit and the connected remote unit to the cascade data processing module;

The cascade data processing module acquires an uplink signal of a lower expansion unit through the cascade port, processes the uplink signal through a physical layer and then sends the uplink signal to the CPRI/eCPRI data processing module, and sends a downlink signal sent by the CPRI/eCPRI data processing module to a corresponding lower expansion unit through the cascade port after processing the downlink signal through the physical layer; the address information of the subordinate expansion unit and the connected remote unit is received through the cascade port, and is sent to the cell resource relation management module after being processed by physical layer data;

or, the downlink signal sent by the central level expansion unit is obtained through a cascade port, and is sent to the CPRI/eCPRI data processing module after being processed by a physical layer downlink; after the uplink signal sent by the CPRI/eCPRI data processing module is processed by the physical layer uplink, the uplink signal is sent to the central level expansion unit through the cascade port; address information of the expansion unit and the connected remote unit is sent to the central-stage expansion unit through a cascade port;

the CPRI/eCPRI data processing module receives the downlink signal sent by the baseband processing unit through the BU connection port, and sends the downlink signal of the same cell to the cascade data processing module or to the cascade data processing module and the direct connection data processing module after CPRI/eCPRI data distribution processing according to the central cascade configuration; and receiving uplink signals sent by the cascade data processing module or the cascade data processing module and the direct connection data processing module, and sending the uplink signals of the same cell to the baseband processing unit through the BU connection port after CPRI/eCPRI data combining processing is performed on the uplink signals of the same cell according to the central cascade configuration; receiving the route association relation through the BU connection port, and sending cell expansion distribution and combination instructions to the cell resource relation management module after CPRI/eCPRI data processing; address information of the expansion unit, the subordinate expansion unit and the connected remote unit is received, and is sent to the baseband processing unit through the BU connection port after CPRI/eCPRI data processing;

Or, receiving the downlink signal sent by the cascade data processing module, and sending the downlink signal of the same cell to the direct-connection data processing module after CPRI/eCPRI data distribution processing according to the central cascade configuration; and receiving the uplink signal sent by the direct-connection data processing module, and sending the uplink signal of the same cell to the cascade data processing module after CPRI/eCPRI data combination processing according to the central cascade configuration; and receiving the route association relation through the BU connection port, and sending cell expansion distribution and combination instructions to the cell resource relation management module after CPRI/eCPRI data processing.

Further, the expansion unit comprises a BU interface, a cell resource relation management module, a CPRI/eCPRI data processing module connected with the cell resource relation management module and the BU interface, a direct connection data processing module connected with the CPRI/eCPRI data processing module and the cell resource relation management module, an optical port connected with the direct connection data processing module, a cascade data processing module connected with the CPRI/eCPRI data processing module and the cell resource relation management module, and a cascade port connected with the cascade data processing module;

the cascade port is communicated with the upper-level expansion unit and/or the lower-level expansion unit through optical fibers;

or, receiving and storing the route association relation through the CPRI/eCPRI data processing module, and expanding, distributing and combining the cell; address information of the expansion unit, the subordinate expansion unit and the connected remote unit is sent to the cascade data processing module;

the cascade data processing module acquires an uplink signal sent by the lower expansion unit through the cascade port, and sends the uplink signal to the CPRI/eCPRI data processing module after physical layer uplink processing; the downlink signal sent by the CPRI/eCPRI data processing module is processed by a physical layer downlink and then sent to a lower-level expansion unit through the cascade port; the address information of the subordinate expansion unit and the connected remote unit is received through the cascade port, and is sent to the cell resource relation management module after being processed by physical layer data;

or, the uplink signal sent by the lower expansion unit is obtained through the cascade port, and is sent to the CPRI/eCPRI data processing module after being processed by the physical layer uplink, and the downlink signal sent by the upper expansion unit is obtained through the cascade port, and is sent to the CPRI/eCPRI data processing module after being processed by the physical layer downlink; the uplink signal sent by the CPRI/eCPRI data processing module is processed by a physical layer uplink and then sent to an upper-level expansion unit through the cascade port, and the downlink signal sent by the CPRI/eCPRI data processing module is processed by a physical layer downlink and then sent to a lower-level expansion unit through the cascade port; the address information of the lower-stage expansion unit and the remote unit connected with the lower-stage expansion unit is received through the cascade port and is sent to the cell resource relation management module after being processed by physical layer data; address information of the expansion unit, the subordinate expansion unit and the remote unit connected with the subordinate expansion unit is sent to the superior expansion unit through the cascade port;

Or, the downlink signal sent by the upper expansion unit is obtained through the cascade port, and is sent to the CPRI/eCPRI data processing module after being processed by a physical layer downlink; and transmitting the uplink signal transmitted by the CPRI/eCPRI data processing module to an upper expansion unit through the cascade port after being processed by a physical layer uplink; address information of the expansion unit and the remote unit connected with the expansion unit is transmitted to the upper expansion unit through the cascade port after being processed by physical layer data;

the CPRI/eCPRI data processing module receives the cascade data processing module or receives the uplink signals sent by the cascade data processing module and the direct connection data processing module, and sends the uplink signals of the same cell to the baseband processing unit after CPRI/eCPRI data combining processing according to the step-by-step cascade configuration; and receiving the downlink signal sent by the baseband processing unit through the BU connection port, and sending the downlink signal of the same cell to the cascade data processing module or to the cascade data processing module and the direct data processing module after performing CPRI/eCPRI data distribution processing according to the cascade configuration; receiving the route association relation through the BU connection port, and sending cell expansion distribution and combination instructions to the cell resource relation management module after CPRI/eCPRI data processing;

Or, receiving the uplink signals sent by the cascade data processing module or the cascade data processing module and the direct connection data module, performing CPRI/eCPRI data combining processing on the uplink signals of the same cell according to the cascade configuration, and then sending the uplink signals to an upper expansion unit; and receiving the downlink signal sent by the cascade data processing module, and sending the downlink signal of the same cell to the cascade data processing module or to the cascade data processing module and the direct connection data processing module after performing CPRI/eCPRI data distribution processing on the downlink signal of the same cell according to the cascade configuration; receiving the route association relation through the BU connection port, and sending cell expansion distribution and combination instructions to the cell resource relation management module after CPRI/eCPRI data processing;

or, receiving the uplink signal sent by the direct-connection data module, and sending the uplink signal of the same cell to the cascade data processing module after CPRI/eCPRI data combination processing according to the cascade configuration; the downlink signals sent by the cascade data processing module are received, and the downlink signals of the same cell are sent to the direct-connection data processing module after CPRI/eCPRI data distribution processing is carried out according to the cascade configuration; and receiving the route association relation through the BU connection port, and sending cell expansion distribution and combination instructions to the cell resource relation management module after CPRI/eCPRI data processing.

Further, the expansion unit comprises a cell resource relation management module, a CPRI/eCPRI data processing module connected with the cell resource relation management module, a cascade data processing module connected with the CPRI/eCPRI data processing module and the cell resource relation management module, an upper connection port and a lower connection port connected with the cascade data processing module, a direct connection data processing module connected with the CPRI/eCPRI data processing module and an optical port connected with the direct connection data processing module;

the optical port is communicated with the remote unit through an optical fiber and a CPRI/eCPRI interface;

the upper port is communicated with an upper expansion unit or the baseband processing unit through an optical fiber and a CPRI/eCPRI interface;

the lower connection port is communicated with the lower expansion unit through an optical fiber and a CPRI/eCPRI interface;

the cell resource relation management module receives and stores the route association relation through the cascade data processing module, and sends cell expansion distribution and combination instructions to the cascade data processing module; address information of the expansion unit, the subordinate expansion unit and the connected remote unit is sent to the cascade data processing module;

Or receiving and storing the route association relation, and expanding, distributing and combining the cell; and transmitting address information of the expansion unit and the connected remote unit to the cascade data processing module;

the cascade data processing module acquires a downlink signal sent by the baseband processing unit through the uplink port, processes the downlink signal through a physical layer downlink and sends the downlink signal to the CPRI/eCPRI data processing module, acquires an uplink signal sent by the lower expansion unit through the downlink port, processes the uplink signal through the physical layer uplink and sends the uplink signal to the CPRI/eCPRI data processing module; the routing association relation is received through the upper connection port, the cell expansion distribution and combination instruction is sent to the cell resource relation management module after being processed by physical layer data, the address information of the lower expansion unit and the connected remote unit is received through the lower connection port, and the cell expansion distribution and combination instruction is sent to the cell resource relation management module after being processed by physical layer data;

or, the downlink signal sent by the upper expansion unit is obtained through the uplink port, and is sent to the CPRI/eCPRI data processing module after being processed by the physical layer downlink, and the uplink signal sent by the lower expansion unit is obtained through the downlink port, and is sent to the CPRI/eCPRI data processing module after being processed by the physical layer uplink; the routing association relation is received through the upper connection port, the cell expansion distribution and combination instruction is sent to the cell resource relation management module after being processed by physical layer data, the address information of the lower expansion unit and the connected remote unit is received through the lower connection port, and the cell expansion distribution and combination instruction is sent to the cell resource relation management module after being processed by physical layer data;

Or, the downlink signal sent by the upper expansion unit is obtained through the upper interface, and is sent to the CPRI/eCPRI data processing module after being processed by the physical layer downlink; and transmitting the uplink signal transmitted by the CPRI/eCPRI data processing module to an upper expansion unit through the uplink port after being processed by a physical layer downlink; and receiving the routing association relation through the upper link, and sending a cell expansion distribution and combination instruction to the cell resource relation management module after physical layer data processing, and sending the address information of the expansion unit and a remote unit connected with the expansion unit to an upper expansion unit through the upper link after physical layer data processing;

the direct connection data processing module receives an uplink signal sent by a remote unit through an optical port, sends the uplink signal to the CPRI/eCPRI data processing module after physical layer uplink processing, and sends a downlink signal sent by the CPRI/eCPRI data processing module to a corresponding remote unit after physical layer downlink processing; the address information sent by the remote unit is received through the optical port, and is sent to the cell resource management module after being processed by the physical layer data;

The CPRI/eCPRI data processing module receives the cascade data processing module or receives the uplink signals sent by the cascade data processing module and the direct connection data processing module, performs CPRI/eCPRI data combining processing on the uplink signals of the same cell according to the step-by-step cascade configuration, and then sends the uplink signals to the cascade data processing module or the direct connection data processing module; and receiving the downlink signal sent by the cascade data processing module, and sending the downlink signal of the same cell to the cascade data processing module or to the cascade data processing module and the direct connection data processing module after CPRI/eCPRI data combining processing is performed on the downlink signal of the same cell according to the step-by-step cascade configuration;

or, receiving the uplink signal sent by the direct-connection data module, and sending the uplink signal of the same cell to the cascade data processing module after CPRI/eCPRI data combination processing according to the cascade configuration; and receiving the downlink signals sent by the cascade data processing module, carrying out CPRI/eCPRI data distribution processing on the downlink signals of the same cell according to the cascade configuration, and then sending the downlink signals to the direct-connection data processing module.

In order to solve the technical problem, the invention also provides a room coverage method based on the extended leather base station, which comprises the following steps:

a plurality of different extension units and remote units are configured in the same cell; the configuration is in direct connection configuration, and/or in central cascade configuration, and/or in step-by-step cascade configuration;

according to the direct connection configuration, uplink signals sent by different remote units in the same cell are sent to a baseband processing unit after the expansion unit completes primary uplink combining processing, and downlink signals in the same cell are sent to corresponding remote units after the expansion unit completes secondary downlink distribution processing; uplink signals sent by different expansion units of the same cell are sent to a core network after being subjected to uplink combination processing again by the baseband processing unit, and downlink signals of the same cell are sent to corresponding expansion units after being subjected to downlink distribution processing for the first time by the baseband processing unit;

according to the central cascade configuration, after the uplink combination processing of the uplink signals sent by different remote units of the same cell is finished by a lower-stage expansion unit, the uplink combination processing of the uplink signals is finished by a central-stage expansion unit again, the uplink signals are sent to the baseband processing unit, and the downlink signals of the same cell are sent to corresponding lower-stage expansion units or lower-stage expansion units and remote units after the first downlink distribution processing of the downlink signals is finished by the central-stage expansion unit, and then sent to corresponding remote units after the second downlink distribution processing of the downlink signals is finished by the lower-stage expansion unit;

Still further, the configuring further includes:

receiving a cell configuration instruction, expanding address information of a remote unit and address information of the remote unit, and generating a route association relationship between the expanding unit and the remote unit and a cell;

and correspondingly generating cell expansion distribution and combination instructions of all cells according to the routing association relation, and sending the routing association relation and the cell expansion distribution and combination instructions to corresponding expansion units.

Further, according to the direct connection configuration, the first uplink combining process sequentially includes physical layer uplink processing of the extension unit, and CPRI/eCPRI data combining processing;

The re-uplink combining processing sequentially comprises physical layer uplink processing of the baseband processing unit, MAC layer uplink combining processing and high-layer protocol stack data processing;

the first downlink distribution processing sequentially comprises high-layer protocol stack data processing of the baseband processing unit, MAC layer downlink distribution processing and physical layer data link processing;

the downlink distribution processing again sequentially comprises CPRI/eCPRI data distribution processing of the expansion unit and physical layer downlink processing.

Further, according to the central cascade configuration, the first uplink combining process sequentially includes physical layer uplink processing of the lower expansion unit, and CPRI/eCPRI data combining processing;

the secondary uplink combining processing sequentially comprises physical layer uplink processing of the central level expansion unit and CPRI/eCPRI data combining processing;

the first downlink distribution processing sequentially comprises CPRI/eCPRI data distribution processing and physical layer downlink processing of the central level expansion unit;

the secondary downlink distribution processing sequentially comprises CPRI/eCPRI data distribution processing and physical layer downlink processing of the lower-level expansion unit;

according to the cascade configuration, the first uplink combining process sequentially comprises physical layer uplink processing of the lower-level expansion unit and CPRI/eCPRI data combining processing;

The secondary uplink combining processing sequentially comprises physical layer uplink processing of the upper-level expansion unit and the highest-level expansion unit, and CPRI/eCPRI data combining processing;

the first downlink distribution processing sequentially comprises CPRI/eCPRI data distribution processing and physical layer downlink processing of the highest-level expansion unit;

the downlink distribution processing again sequentially comprises CPRI/eCPRI data distribution processing of the lower-level expansion unit and physical layer downlink processing.

Compared with the prior art, the invention has the following beneficial effects: the indoor coverage system can flexibly meet various networking modes so as to adapt to networking requirements of different scenes.

Drawings

FIG. 1 is a schematic diagram of a prior art indoor coverage system networking based on an extended pico-base station;

FIG. 2 is an example of a networking of a room-division overlay system according to a direct configuration relationship in accordance with an embodiment of the present invention;

fig. 3 is an example of a list of cell routing configurations based on the networking approach of fig. 2;

fig. 4 is a block diagram of a baseband processing unit according to an embodiment of the present invention;

FIG. 5 is a block diagram of an expansion unit of a configurable tandem relationship in accordance with an embodiment of the present invention;

FIG. 6 is an example of a system networking according to a central cascading configuration relationship in accordance with an embodiment of the present invention;

Fig. 7 is an example of a list of cell routing configurations based on the networking approach of fig. 6;

FIG. 8 is an example of a system for networking a compartment coverage system according to a stepwise cascading configuration in accordance with an embodiment of the present invention;

fig. 9 is an example of a list of cell routing configurations based on the networking approach of fig. 8;

FIG. 10 is a block diagram of a configurable hub cascaded and progressive cascaded expansion unit in accordance with an embodiment of the present invention;

FIG. 11 is a schematic diagram of a system networking of a configurable cascade according to another embodiment of the invention;

fig. 12 is an example of a list of cell route configurations based on the networking approach of fig. 11;

FIG. 13 is a block diagram of an expansion unit according to a cascade configuration of another embodiment of the present invention;

fig. 14 is a block diagram of steps of an indoor coverage method based on an extended pico-base station according to an embodiment of the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.

The indoor coverage system based on the extended type leather base station comprises at least one baseband processing unit (BU), a plurality of Extension Units (EU) connected with the baseband processing unit and a plurality of Remote Units (RU) connected with the extension units. Further, a plurality of different extension units and remote units are arranged in the same Cell (Cell).

Specifically, in this embodiment, the configuration includes a direct connection configuration, and/or a center cascade configuration, and/or a cascade configuration.

According to the direct connection configuration, the expansion unit completes the first uplink combining processing of uplink signals sent by different remote units of the same cell, then sends the uplink signals to the baseband processing unit, and completes the downlink distribution processing of downlink signals of the same cell again, then sends the downlink signals to the corresponding remote units; the baseband processing unit completes the uplink combination processing of the uplink signals sent by different expansion units of the same cell, sends the uplink signals to the core network, and sends the downlink signals to the corresponding expansion units after the first downlink distribution processing of the downlink signals of the same cell is completed.

Specifically, under the direct connection configuration, a plurality of expansion units of the same cell are directly connected with the baseband processing unit. As shown in fig. 2, in this example, the indoor coverage system includes one BU, two EUs (EU 1-EU 2), each EU connects 8 RUs (RU 1-RU 8), wherein RU1-RU6 of EU1 downlink is configured in Cell1, RU7-RU8 of EU1 downlink and RU1-RU2 of EU2 downlink are configured in Cell2, and RU3-RU8 of EU2 downlink is configured in Cell 3. RU1-RU6 under EU1 of the home Cell1 communicates directly with the BU through EU1, RU7-RU8 under EU1 of the home Cell2 also communicates directly with the BU through EU1, RU1-RU2 under EU2 of the home Cell2 communicates directly with the BU through EU2, and RU3-RU8 under EU2 of the home Cell3 also communicates directly with the BU through EU 2.

According to the direct configuration of fig. 2 and address information of the extension unit and the remote unit, BU generates a cell route configuration list in which route association relations between the extension unit and the remote unit and cells are recorded, specifically, as shown in fig. 3, in the table, route indication information is generated according to the direct configuration relations, and the composition structure is as follows: slotID (indicating the slot position number of the front card in BU), X (indicating the optical port number of EU connection BU) +Y (optical port number of EU connection RU). Other formats besides this may be used by those skilled in the art without affecting the practice of the invention.

According to the central cascade configuration, after the lower-stage expansion unit completes the primary uplink combining process of uplink signals sent by different remote units of the same cell, the uplink combining process is completed again through the central-stage expansion unit, the uplink signals are sent to the baseband processing unit, and the downlink signals of the same cell are sent to the corresponding lower-stage expansion unit or the lower-stage expansion unit and the remote unit after the primary downlink distributing process is completed through the central-stage expansion unit, and the downlink signals are sent to the corresponding remote unit after the secondary downlink distributing process is completed through the lower-stage expansion unit.

Specifically, under the central cascade configuration, a plurality of lower-level expansion units of the same cell are all connected with a central-level expansion unit, and the central-level expansion unit is connected with a baseband processing unit. As shown in fig. 6, in this example, the indoor coverage system includes one BU, three EUs (EU 1-EU 3), each EU connects 8 RUs (RU 1-RU 8), wherein RU1-RU4 of EU1 downlink is configured in Cell1, RU5-RU8 of EU1 downlink and RU1-RU8 of EU2 downlink, and RU1-RU2 of EU3 downlink are configured in Cell2, RU3-RU8 of EU3 downlink is configured in Cell3. Cells Cell1 and Cell3 are in a direct connection configuration, RU1-RU4 under EU1 of the home Cell1 communicates directly with BU through EU1, and RU3-RU8 under EU3 of the home Cell3 communicates directly with BU through EU 3. The Cell2 is configured in a central cascade, and EU2 is a central-level expansion unit in expansion units EU1-EU3 belonging to the Cell2 and is in cascade connection with lower-level expansion units EU1 and EU3, RU5-RU8 under EU1 of home Cell2 communicates with BU via EU1 and then EU2, RU1-RU8 under EU2 of home Cell2 communicates with BU directly via EU2, RU3-RU8 under EU3 of home Cell2 communicates with BU via EU3 and then EU 2.

According to the central cascade configuration of fig. 6 and address information of the extension unit and the remote unit, BU generates a cell route configuration list in which route association relations between the extension unit and the remote unit and cells are recorded, specifically, as shown in fig. 7, in the table, route indication information is generated according to the central cascade configuration relation, and the composition structure is as follows: slotID (indicating card slot position number of the front card in BU) _X (indicating optical port number of EU connection BU) _Xnextsevel (indicating cascade level) +Y (optical port number of EU connection RU). Other formats besides this may be used by those skilled in the art without affecting the practice of the invention.

According to the cascade configuration, after the lower-stage expansion unit completes the first uplink combination processing of uplink signals sent by different remote units of the same cell, the uplink signal is gradually sent to the baseband processing unit after passing through the upper-stage expansion unit until the highest-stage expansion unit completes the second uplink combination processing, and the downlink signal of the same cell is sent to the corresponding lower-stage expansion unit or the lower-stage expansion unit and the remote unit after passing through the highest-stage expansion unit to complete the first downlink distribution processing, and then is sent to the corresponding remote unit after passing through the lower-stage expansion unit to complete the second downlink distribution processing.

Specifically, under the cascade configuration step by step, the lower-level expansion unit and the upper-level expansion unit of the same cell are connected step by step, and the highest-level expansion unit is connected with the baseband processing unit. As shown in fig. 8, in this example, the indoor coverage system includes one BU, three EUs (EU 1-EU 3), each EU connects 8 RUs (RU 1-RU 8), wherein RU1-RU4 of EU1 downlink is configured in Cell1, RU5-RU8 of EU1 downlink and RU1-RU8 of EU2 downlink, and RU1-RU2 of EU3 downlink are configured in Cell2, RU3-RU8 of EU3 downlink is configured in Cell3. Cells Cell1 and Cell3 are in a direct connection configuration, RU1-RU4 under EU1 of the home Cell1 communicates directly with BU through EU1, and RU3-RU8 under EU3 of the home Cell3 communicates directly with BU through EU 3. The Cell2 is configured in cascade, EU3 is a lower-level expansion unit, EU2 is an upper-level expansion unit, EU1 is a highest-level expansion unit, among expansion units EU1-EU3 belonging to the Cell2 are cascaded in cascade, RU5-RU8 under EU1 of the home Cell2 communicates with the BU through EU1, RU1-RU8 under EU2 of the home Cell2 communicates with the BU through EU2 first, then EU1, RU1-RU2 under EU3 of the home Cell2 communicates with the BU through EU3 first, then EU2, and finally through EU 1. According to the cascade configuration of fig. 8 and address information of the extension unit and the remote unit, BU generates a cell route configuration list in which route association relations between the extension unit and the remote unit and cells are recorded, specifically, as shown in fig. 9, in the table, route indication information is generated according to the cascade configuration relation, and the composition structure is as follows: slotID (indicating card slot position number of the front card in BU) _X (indicating optical port number of EU connection BU) _X1nextlievel (indicating first-stage cascade) _X1euthantlievel (indicating second-stage cascade) … +Y (optical port number of EU connection RU). Other formats besides this may be used by those skilled in the art without affecting the practice of the invention.

As shown in fig. 4, the baseband processing unit in the embodiment of the invention includes a route configuration module, a device management module, a higher layer protocol stack module, a MAC layer processing module, a physical layer processing module, a transmission module and a forwarding card.

And the route configuration module receives the cell configuration instruction, expands the address information of the remote unit and generates a route association relation between the expansion unit and the remote unit and the cell.

Specifically, after the remote unit is powered on, the remote unit carries a MAC address (Media Access Control, medium access control) through a discover message custom field and sends the discover message to the extension unit, and the extension unit receives the discover message from the corresponding optical port and identifies the MAC address of the remote unit connected to the optical port. The expansion unit collects the MAC address from the optical port of the connecting remote unit, and then reports the MAC address of the expansion unit and the MAC address of the connecting remote unit to the baseband processing unit.

In this embodiment, the route association is included in the cell route configuration list, and the route association is transmitted by transmitting the cell configuration list to the extension unit.

And the equipment management module correspondingly generates cell expansion distribution and combination instructions of all cells according to the route association relation, and sends the route association relation and the cell expansion distribution and combination instructions to corresponding expansion units through the front transmission card.

The front-end card is communicated with the expansion unit through an optical fiber and a CPRI/eCPRI interface.

The physical layer processing module processes the received uplink signal by the physical layer data link and then sends the processed uplink signal to the MAC layer processing module, and sends the processed downlink signal to the front transmission card after processing the received downlink signal by the physical layer data link.

The MAC layer processing module is used for receiving the uplink signals sent by the physical layer processing module, processing the uplink signals of the MAC layer and sending the processed uplink signals to the high-layer protocol stack module, receiving the downlink signals sent by the high-layer protocol stack module, processing the downlink signals of the MAC layer and sending the processed downlink signals to the physical layer processing module; and according to the direct connection configuration, the uplink signals of the same cell are subjected to MAC layer uplink combining processing and then sent to a high-layer protocol stack module, and the downlink signals of the same cell are subjected to MAC layer downlink distributing processing and then sent to a physical layer processing module.

And the high-layer protocol stack module is used for sequentially carrying out data processing on the uplink signals sent by the MAC layer processing module according to the protocol layers and then sending the uplink signals to the transmission module, and sequentially carrying out data processing on the received downlink signals according to the protocol layers and then sending the downlink signals to the MAC layer processing module.

Specifically, in this embodiment, according to the direct configuration, the uplink combining process includes the physical layer uplink process of the baseband processing unit, the MAC layer uplink combining process, and the higher layer protocol stack data process in sequence; the first downlink distribution processing sequentially comprises higher layer protocol stack data processing of the baseband processing unit, MAC layer downlink distribution processing and physical layer data link processing.

In a 5G communication system, the higher layer protocol stack includes, in order, an RLC layer (Radio Link Control, radio link layer control protocol), a PDCP layer (PacketData Convergence Protocol ). In the embodiment of the invention, after the MAC layer processing module completes the combination processing of the uplink signals of the same cell, the uplink signals after combination sequentially pass through the RLC layer and the PDCP layer to complete the data processing. The downlink signals of the same cell received by the transmission module sequentially pass through the PDCP layer, and after the RLC layer finishes data processing, the downlink signals are distributed and processed by the MAC layer processing module.

As shown in fig. 5, the extension unit capable of configuring the direct connection relationship in the embodiment of the invention comprises a BU connection interface, a cell resource relationship management module, a CPRI/eCPRI data processing module connected with the cell resource relationship management module and the BU connection interface, a direct connection data processing module connected with the CPRI/eCPRI data processing module and the cell resource relationship management module, and an optical port connected with the direct connection data processing module.

And the BU interface is communicated with the baseband processing unit through an optical fiber and the CPRI/eCPRI interface.

The cell resource relation management module receives and stores the route association relation and cell expansion distribution and combination instructions through the CPRI/eCPRI data processing module; and transmitting address information of the extension unit and the connected remote unit to the CPRI/eCPRI data processing module.

The optical port is communicated with the remote unit through an optical fiber, receives address information and uplink signals of the remote unit, and transmits downlink signals to the remote unit.

The direct connection data processing module is used for processing an uplink signal sent by the remote unit through a physical layer uplink and then sending the uplink signal to the CPRI/eCPRI data processing module, and sending a downlink signal sent by the CPRI/eCPRI data processing module through a physical layer downlink and then sending the downlink signal to the corresponding remote unit; and the address information of the connected remote units is sent to the cell resource management module after being processed by the physical layer data.

The CPRI/eCPRI data processing module is used for receiving the uplink signals sent by the direct-connection data processing module, carrying out CPRI/eCPRI data combination processing on the uplink signals of the same cell according to direct-connection configuration, then sending the uplink signals to the BU interface, receiving the downlink signals sent by the baseband processing unit through the BU interface, carrying out CPRI/eCPRI data distribution processing on the downlink signals of the same cell, and then sending the downlink signals to the direct-connection data processing module; receiving a route association relation through a BU connection port, and sending a cell expansion distribution and combination instruction to a cell resource relation management module after CPRI/eCPRI data processing; and receiving address information of the expansion unit and the connected remote unit, processing the address information by CPRI/eCPRI data, and sending the processed address information to a BU interface.

Specifically, in this embodiment, according to the direct configuration, the first uplink combining process sequentially includes physical layer uplink processing of the extension unit, and CPRI/eCPRI data combining process; the downlink distribution processing again sequentially comprises CPRI/eCPRI data distribution processing of the extension unit and physical layer downlink processing.

As shown in fig. 10, the extension unit of the configurable center cascade and the cascade according to an embodiment of the present invention includes a BU link interface, a cell resource relationship management module, a CPRI/eCPRI data processing module connected to the cell resource relationship management module and the BU link interface, a direct data processing module connected to the CPRI/eCPRI data processing module and the cell resource relationship management module, an optical port connected to the direct data processing module, a cascade data processing module connected to the CPRI/eCPRI data processing module and the cell resource relationship management module, and a cascade port connected to the cascade data processing module.

If the system is set to be in a central cascade configuration, in this embodiment, the cascade ports of the central stage expansion units are connected to the cascade ports of the plurality of lower stage expansion units through optical fibers.

Specifically, as shown in the example of fig. 6, the cascade port 1 and the cascade port 2 of the center stage expansion unit EU2 are connected to the cascade port 2 of the lower stage expansion unit EU1 and the cascade port 1 of the lower stage expansion unit EU2, respectively.

In this embodiment, the cell resource relationship management module of the central level expansion unit receives and stores the route association relationship, and cell expansion distribution and combining instructions through the CPRI/eCPRI data processing module; and transmitting address information of the expansion unit, the subordinate expansion unit and the connected remote unit to the CPRI/eCPRI data processing module.

The cell resource relation management module of the lower-level expansion unit receives and stores the route association relation and cell expansion distribution and combination instructions through the CPRI/eCPRI data processing module; and transmitting the address information of the expansion unit and the connected remote unit to the cascade data processing module.

The direct connection data processing modules of the central-level expansion unit and the lower-level expansion unit process uplink signals sent by the remote units through physical layer uplink and then send the uplink signals to the CPRI/eCPRI data processing module, and send downlink signals sent by the CPRI/eCPRI data processing module through physical layer downlink and then send the downlink signals to the corresponding remote units; receiving a route association relation through a BU connection port, and sending a cell expansion distribution and combination instruction to a cell resource relation management module after CPRI/eCPRI data processing; and the address information of the connected remote units is sent to the cell resource management module after being processed by the physical layer data.

The cascade data processing module of the central level expansion unit acquires an uplink signal of the lower level expansion unit through a cascade port, and sends the uplink signal to the CPRI/eCPRI data processing module after being processed by a physical layer uplink, and sends a downlink signal sent by the CPRI/eCPRI data processing module to the corresponding lower level expansion unit through the cascade port after being processed by the physical layer downlink; and receiving address information of the subordinate extension unit and the connected remote unit through the cascade port, and sending the address information to the cell resource relation management module after physical layer data processing.

The cascade data processing module of the lower-stage expansion unit acquires a downlink signal sent by the central-stage expansion unit through a cascade port, and sends the downlink signal to the CPRI/eCPRI data processing module after physical layer downlink processing; after the uplink signal sent by the CPRI/eCPRI data processing module is processed by the physical layer uplink, the uplink signal is sent to the central expansion unit through the cascade port; and transmitting the address information of the expansion unit and the connected remote unit to the central-stage expansion unit through the cascade port.

The CPRI/eCPRI data processing module of the central level expansion unit receives the downlink signal sent by the baseband processing unit through the BU connection port, and sends the downlink signal of the same cell to the cascade data processing module or to the cascade data processing module and the direct connection data processing module after carrying out CPRI/eCPRI data distribution processing according to the central cascade configuration; and receiving uplink signals sent by the cascade data processing module or the cascade data processing module and the direct connection data processing module, carrying out CPRI/eCPRI data combining processing on the uplink signals of the same cell according to the central cascade configuration, and then sending the uplink signals to the baseband processing unit through a BU connection port; and receiving address information of the expansion unit, the subordinate expansion unit and the connected remote unit, processing CPRI/eCPRI data, and transmitting the processed address information to the baseband processing unit through a BU connection port.

The CPRI/eCPRI data processing module of the lower expansion unit receives the downlink signal sent by the cascade data processing module, and sends the downlink signal of the same cell to the direct-connection data processing module after CPRI/eCPRI data distribution processing according to the central cascade configuration; and receiving the uplink signals sent by the direct-connection data processing module, carrying out CPRI/eCPRI data combining processing on the uplink signals of the same cell according to the central cascade configuration, and then sending the uplink signals to the cascade data processing module; and receiving a route association relation through a BU connection port, and sending a cell expansion distribution and combination instruction to a cell resource relation management module after CPRI/eCPRI data processing.

If the system is configured in a cascade configuration, in this embodiment, the cascade port of the lower expansion unit is connected to the cascade port of an expansion unit of a previous stage through an optical fiber, and the cascade port of the expansion unit of the previous stage is connected to the cascade port of an expansion unit of a next previous stage step by step until the cascade port of the expansion unit of the highest stage is connected.

Specifically, as shown in the example of fig. 8, the cascade port 1 of the lower expansion unit EU3 is connected to the cascade port 2 of the upper expansion unit EU2, and the cascade port 1 of EU2 is connected to the cascade 2 of the highest expansion unit EU 1.

The cell resource relation management module of the highest-level expansion unit receives and stores the route association relation and cell expansion distribution and combination instructions through the CPRI/eCPRI data processing module; and transmitting address information of the expansion unit, the subordinate expansion unit and the connected remote unit to the CPRI/eCPRI data processing module.

The cell resource relation management module of the upper-level expansion unit receives and stores the route association relation and cell expansion distribution and combination instructions through the CPRI/eCPRI data processing module; and transmitting address information of the expansion unit, the subordinate expansion unit and the connected remote unit to the cascade data processing module.

The cascade data processing module of the highest-level expansion unit acquires an uplink signal sent by the lower-level expansion unit through a cascade port, and sends the uplink signal to the CPRI/eCPRI data processing module after physical layer uplink processing; and transmitting the downlink signal transmitted by the CPRI/eCPRI data processing module to a lower expansion unit through a cascade port after downlink processing of a physical layer; and receiving address information of the subordinate extension unit and the connected remote unit through the cascade port, and sending the address information to the cell resource relation management module after physical layer data processing.

The cascade data processing module of the upper expansion unit acquires an uplink signal sent by the lower expansion unit through a cascade port, and sends the uplink signal to the CPRI/eCPRI data processing module after being processed by a physical layer uplink, and acquires a downlink signal sent by the upper expansion unit through the cascade port, and sends the downlink signal to the CPRI/eCPRI data processing module after being processed by a physical layer downlink; the uplink signal sent by the CPRI/eCPRI data processing module is processed by the physical layer uplink and then sent to the upper-level expansion unit through the cascade port, and the downlink signal sent by the CPRI/eCPRI data processing module is processed by the physical layer downlink and then sent to the lower-level expansion unit through the cascade port; the address information of the lower-stage expansion unit and the remote unit connected with the lower-stage expansion unit is received through the cascade port and is sent to the cell resource relation management module after being processed by the physical layer data; address information of the expansion unit and the subordinate expansion unit and the remote unit connected with the subordinate expansion unit is sent to the superior expansion unit through the cascade port.

The cascade data processing module of the lower-level expansion unit acquires a downlink signal sent by the upper-level expansion unit through a cascade port, and sends the downlink signal to the CPRI/eCPRI data processing module after downlink processing of a physical layer; and transmitting the uplink signal transmitted by the CPRI/eCPRI data processing module to an upper expansion unit through a cascade port after being processed by a physical layer uplink; and address information of the expansion unit and the remote unit connected with the expansion unit is transmitted to the upper expansion unit through a cascade port after being processed by physical layer data.

The CPRI/eCPRI data processing module of the highest-level expansion unit receives the cascade data processing module or receives the uplink signals sent by the cascade data processing module and the direct connection data processing module, and according to the cascade configuration, the uplink signals of the same cell are subjected to CPRI/eCPRI data combining processing and then sent to the baseband processing unit; and receiving the downlink signal sent by the baseband processing unit through the BU connection port, and sending the downlink signal of the same cell to the cascade data processing module or to the cascade data processing module and the direct connection data processing module after CPRI/eCPRI data distribution processing according to the cascade configuration; and receiving a route association relation through a BU connection port, and sending a cell expansion distribution and combination instruction to a cell resource relation management module after CPRI/eCPRI data processing.

The CPRI/eCPRI data processing module of the upper expansion unit receives the cascade data processing module or receives the uplink signals sent by the cascade data processing module and the direct connection data module, and according to the cascade configuration, the uplink signals of the same cell are subjected to CPRI/eCPRI data combining processing and then sent to the upper expansion unit; the downlink signals sent by the cascade data processing module are received, and after CPRI/eCPRI data distribution processing is carried out on the downlink signals of the same cell according to cascade configuration, the downlink signals are sent to the cascade data processing module or to the cascade data processing module and the direct connection data processing module; and receiving a route association relation through a BU connection port, and sending a cell expansion distribution and combination instruction to a cell resource relation management module after CPRI/eCPRI data processing.

The CPRI/eCPRI data processing module of the lower expansion unit receives the uplink signal sent by the direct-connection data module, performs CPRI/eCPRI data combining processing on the uplink signal of the same cell according to the cascade configuration and then sends the uplink signal to the cascade data processing module; the downlink signals sent by the cascade data processing module are received, and the downlink signals of the same cell are sent to the direct-connection data processing module after CPRI/eCPRI data distribution processing is carried out according to the cascade configuration; and receiving a route association relation through a BU connection port, and sending a cell expansion distribution and combination instruction to a cell resource relation management module after CPRI/eCPRI data processing.

In the indoor coverage system configured according to the cascade connection relationship according to the other embodiment of the present invention, the expansion unit does not include the BU direct connection port and the cascade connection port, but is replaced with the upper connection port and the lower connection port, the upper connection port may be connected with the upper expansion unit and the BU, and the lower connection port may be connected with the lower expansion unit. Specifically, as shown in the example of fig. 11, in this example, the indoor coverage system includes one BU, three EUs (EU 1-EU 3), each EU connects 8 RUs (RU 1-RU 8), wherein RU1-RU4 of EU1 downlink is configured in Cell1, RU5-RU8 of EU1 downlink and RU1-RU8 of EU2 downlink, and RU1-RU2 of EU3 downlink are configured in Cell2, RU3-RU8 of EU3 downlink is configured in Cell3. Cell1 is configured in a direct connection mode, and cells Cell2 and Cell3 are configured in a cascade mode. RU1-RU4 under EU1 of home Cell1 communicates directly with BU via EU 1. In the extension units EU1-EU3 of the home Cell2, EU3 is a lower extension unit, EU2 is an upper extension unit, EU1 is a highest extension unit, the three units are cascaded step by step, RU5-RU8 under EU1 of the home Cell2 is communicated with BU through EU1, RU1-RU8 under EU2 of the home Cell2 is communicated with BU through EU2 and then EU1, RU1-RU2 under EU3 of the home Cell2 is communicated with BU through EU3 and then EU2, and finally the RU1 is communicated with BU through EU 1. RU3-RU8 under EU3 of the home Cell3 communicates with BU via EU3, then EU2, and finally EU 1.

According to the cascade configuration of fig. 11 and address information of the extension unit and the remote unit, BU generates a cell route configuration list in which route association relations between the extension unit and the remote unit and cells are recorded, specifically, as shown in fig. 12, in the table, route indication information is generated according to the cascade configuration relation, and the composition structure is as follows: slotID (indicating card slot position number of the front card in BU) _X (indicating optical port number of EU connection BU) _X1nextlievel (indicating first-stage cascade) _X1euthantlievel (indicating second-stage cascade) … +Y (optical port number of EU connection RU). Other formats besides this may be used by those skilled in the art without affecting the practice of the invention.

Specifically, as shown in fig. 13, the expansion unit of the configurable cascade connection relationship in this embodiment includes a cell resource relationship management module, a CPRI/eCPRI data processing module connected to the cell resource relationship management module, a cascade data processing module connected to the CPRI/eCPRI data processing module and the cell resource relationship management module, an uplink port and a downlink port connected to the cascade data processing module, a direct data processing module connected to the CPRI/eCPRI data processing module, and an optical port connected to the direct data processing module.

And the optical port is communicated with the remote unit through an optical fiber and a CPRI/eCPRI interface.

And the upper connection port is communicated with the upper-level expansion unit or the baseband processing unit through an optical fiber and a CPRI/eCPRI interface.

And the lower connection port is communicated with the lower expansion unit through an optical fiber and a CPRI/eCPRI interface.

The cell resource relation management module of the highest-level expansion unit and the upper-level expansion unit receives and stores the route association relation, and cell expansion distribution and combination instructions are sent to the cascade data processing module; and transmitting address information of the expansion unit, the subordinate expansion unit and the connected remote unit to the cascade data processing module.

The cell resource relation management module of the subordinate expansion unit receives and stores the route association relation and cell expansion distribution and combination instructions; and transmitting the address information of the expansion unit and the connected remote unit to the cascade data processing module.

The cascade data processing module of the highest-level expansion unit acquires downlink signals sent by the baseband processing unit through the cascade data processing module and sends the downlink signals to the CPRI/eCPRI data processing module after downlink processing of a physical layer, acquires uplink signals sent by the lower-level expansion unit through the downlink port and sends the uplink signals to the CPRI/eCPRI data processing module after uplink processing of the physical layer; and receiving the route association relation through the upper interface, transmitting the cell expansion distribution and combination instruction to the cell resource relation management module after physical layer data processing, receiving the address information of the lower expansion unit and the connected remote unit through the lower interface, and transmitting the address information to the cell resource relation management module after physical layer data processing.

The cascade data processing module of the upper-level expansion unit acquires a downlink signal sent by the upper-level expansion unit through the cascade data processing module, and sends the downlink signal to the CPRI/eCPRI data processing module after being processed by a physical layer downlink, acquires an uplink signal sent by the lower-level expansion unit through the downlink port, and sends the uplink signal to the CPRI/eCPRI data processing module after being processed by a physical layer uplink; and receiving the route association relation through the upper interface, transmitting the cell expansion distribution and combination instruction to the cell resource relation management module after physical layer data processing, receiving the address information of the lower expansion unit and the connected remote unit through the lower interface, and transmitting the address information to the cell resource relation management module after physical layer data processing.

The cascade data processing module of the lower-level expansion unit acquires a downlink signal sent by the upper-level expansion unit through an uplink port, and sends the downlink signal to the CPRI/eCPRI data processing module after downlink processing of a physical layer; and transmitting the uplink signal transmitted by the CPRI/eCPRI data processing module to an upper expansion unit through an upper link after downlink processing of a physical layer; and receiving the route association relation through the upper interface, transmitting the cell expansion distribution and combination instruction to a cell resource relation management module after physical layer data processing, and transmitting the address information of the expansion unit and the remote unit connected with the expansion unit to the upper expansion unit through the upper interface after physical layer data processing.

The direct-connection data processing module receives an uplink signal sent by the remote unit through the optical port, sends the uplink signal to the CPRI/eCPRI data processing module after being processed by the physical layer uplink, and sends a downlink signal sent by the CPRI/eCPRI data processing module to the corresponding remote unit after being processed by the physical layer downlink; and receiving the address information sent by the remote unit through the optical port, and sending the address information to the cell resource management module after physical layer data processing.

The CPRI/eCPRI data processing module of the highest-level expansion unit and the CPRI/eCPRI data processing module of the upper-level expansion unit receives the cascade data processing module or receives the uplink signals sent by the cascade data processing module and the direct data processing module, performs CPRI/eCPRI data combination processing on the uplink signals of the same cell according to the cascade configuration and then sends the uplink signals to the cascade data processing module or sends the uplink signals to the cascade data processing module and the direct data processing module; and receiving the downlink signals sent by the cascade data processing module, carrying out CPRI/eCPRI data combining processing on the downlink signals of the same cell according to the cascade configuration, and then sending the downlink signals to the cascade data processing module or to the cascade data processing module and the direct connection data processing module.

The CPRI/eCPRI data processing module of the lower expansion unit receives the uplink signal sent by the direct-connection data module, performs CPRI/eCPRI data combining processing on the uplink signal of the same cell according to the cascade configuration and then sends the uplink signal to the cascade data processing module; and receiving the downlink signals sent by the cascade data processing module, carrying out CPRI/eCPRI data distribution processing on the downlink signals of the same cell according to the cascade configuration, and then sending the downlink signals to the direct-connection data processing module.

As shown in fig. 14, an indoor coverage method based on an extended pico-base station includes:

a plurality of different extension units and remote units are configured in the same cell; the configuration comprises a direct connection configuration and/or a central cascade configuration and/or a step-by-step cascade configuration;

according to the direct connection configuration, uplink signals sent by different remote units in the same cell are sent to a baseband processing unit after being subjected to primary uplink combining processing by an expansion unit, and downlink signals in the same cell are sent to corresponding remote units after being subjected to secondary downlink distributing processing by the expansion unit; uplink signals sent by different expansion units of the same cell are sent to a core network after being subjected to uplink combination processing again by a baseband processing unit, and downlink signals of the same cell are sent to corresponding expansion units after being subjected to downlink distribution processing for the first time by the baseband processing unit;

According to the central cascade configuration, after the uplink signals sent by different remote units in the same cell are subjected to primary uplink combining processing by a lower-stage expansion unit, the uplink combining processing is finished again by the central-stage expansion unit, the uplink signals are sent to a baseband processing unit, and the downlink signals in the same cell are sent to corresponding lower-stage expansion units or lower-stage expansion units and remote units after the primary downlink distribution processing is finished by the central-stage expansion unit, and then the downlink signals are sent to corresponding remote units after the secondary downlink distribution processing is finished by the lower-stage expansion unit;

In this embodiment, the configuration further includes:

receiving a cell configuration instruction, expanding address information of a remote unit and address information of the remote unit, and generating a route association relationship between the expansion unit and the remote unit and the cell;

and correspondingly generating cell expansion distribution and combination instructions of all cells according to the route association relation, and sending the route association relation and the cell expansion distribution and combination instructions to corresponding expansion units.

In this embodiment, in the direct connection configuration, multiple extension units of the same cell are directly connected to the baseband processing unit. According to the direct connection configuration, the first uplink combining process sequentially comprises physical layer uplink processing of the extension unit and CPRI/eCPRI data combining processing. And the uplink combination processing again sequentially comprises physical layer uplink processing of the baseband processing unit, MAC layer uplink combination processing and high-layer protocol stack data processing.

The first downlink distribution processing sequentially comprises higher layer protocol stack data processing of the baseband processing unit, MAC layer downlink distribution processing and physical layer data link processing. The downlink distribution processing again sequentially comprises CPRI/eCPRI data distribution processing of the extension unit and physical layer downlink processing.

In this embodiment, under the central cascade configuration, a plurality of lower expansion units of the same cell are all connected to a central expansion unit, and the central expansion unit is connected to a baseband processing unit. According to the central cascade configuration, the first uplink combining process sequentially comprises physical layer uplink processing of a lower-level expansion unit and CPRI/eCPRI data combining processing. The uplink combination processing again sequentially comprises physical layer uplink processing of the central level expansion unit and CPRI/eCPRI data combination processing.

The first downlink distribution processing sequentially comprises CPRI/eCPRI data distribution processing of the central level expansion unit and physical layer downlink processing. The downlink distribution processing again sequentially comprises CPRI/eCPRI data distribution processing of the lower-level expansion unit and physical layer downlink processing.

In this embodiment, under a cascade configuration, a lower-level expansion unit and an upper-level expansion unit of the same cell are connected step by step, and a highest-level expansion unit is connected to a baseband processing unit. According to the cascade configuration, the first uplink combining process sequentially comprises physical layer uplink processing of a lower-level expansion unit and CPRI/eCPRI data combining processing. The uplink combination processing again sequentially comprises physical layer uplink processing of an upper-level expansion unit and a highest-level expansion unit, and CPRI/eCPRI data combination processing.

The first downlink distribution processing sequentially comprises CPRI/eCPRI data distribution processing of the highest-level expansion unit and physical layer downlink processing. The downlink distribution processing again sequentially comprises CPRI/eCPRI data distribution processing of the lower-level expansion unit and physical layer downlink processing.

In summary, the indoor coverage system of the invention can flexibly meet various networking modes so as to adapt to networking requirements of different scenes.

The foregoing examples only illustrate preferred embodiments of the invention, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that modifications and improvements can be made without departing from the spirit of the invention, such as combining different features of the various embodiments, which are all within the scope of the invention.

Claims

1. An indoor coverage system based on an extended skin base station is characterized by comprising at least one baseband processing unit, a plurality of extension units connected with the baseband processing unit and a plurality of remote units connected with the extension units; a plurality of different extension units and remote units are configured in the same cell;

the configuration comprises a direct connection configuration, a center cascade configuration and a step-by-step cascade configuration;

According to the central cascade configuration, after the lower-level expansion unit completes the primary uplink combination processing of uplink signals sent by different remote units of the same cell, the lower-level expansion unit completes the secondary uplink combination processing, and then sends the uplink signals to the baseband processing unit, and the downlink signals of the same cell complete the primary downlink distribution processing through the central-level expansion unit, and then sends the downlink signals to the corresponding lower-level expansion unit or the lower-level expansion unit and the remote units, and then sends the downlink signals to the corresponding remote units after completing the secondary downlink distribution processing through the lower-level expansion unit;

according to the cascade configuration, after the lower-level expansion unit completes the first uplink combination processing of uplink signals sent by different remote units of the same cell, the uplink signals pass through the upper-level expansion unit step by step until the highest-level expansion unit completes the second uplink combination processing, and then are sent to the baseband processing unit, and downlink signals of the same cell pass through the highest-level expansion unit to complete the first downlink distribution processing, and then are sent to the corresponding lower-level expansion unit or the lower-level expansion unit and the remote unit, and finally pass through the lower-level expansion unit to complete the second downlink distribution processing and then are sent to the corresponding remote unit;

The expansion unit comprises a BU (BUs) link interface, a cell resource relation management module, a CPRI/eCPRI data processing module connected with the cell resource relation management module and the BU link interface, a direct-connection data processing module connected with the CPRI/eCPRI data processing module and the cell resource relation management module, an optical port connected with the direct-connection data processing module, a cascade data processing module connected with the cell resource relation management module and the CPRI/eCPRI data processing module, and a cascade port connected with the cascade data processing module;

the cascade port is communicated with an upper-level expansion unit and/or a lower-level expansion unit or a central-level expansion unit through an optical fiber;

the cell resource relation management module sends address information of the expansion unit, the subordinate expansion unit and the connected remote unit to the CPRI/eCPRI data processing module;

Or, the address information of the expansion unit and the subordinate expansion unit and the connected remote unit is sent to the cascade data processing module;

Or, the downlink signal sent by the central level expansion unit is obtained through a cascade port, and is sent to the CPRI/eCPRI data processing module after being processed by a physical layer downlink; after the uplink signal sent by the CPRI/eCPRI data processing module is processed by the physical layer uplink, the uplink signal is sent to the central level expansion unit through the cascade port; address information of the expansion unit and the connected remote unit is sent to the central-stage expansion unit through a cascade port; or the data is sent to an upper-level expansion unit through the cascade port; address information of the expansion unit and the remote unit connected with the expansion unit is transmitted to the upper expansion unit through the cascade port after being processed by physical layer data;

or, the uplink signal sent by the lower expansion unit is obtained through the cascade port, and is sent to the CPRI/eCPRI data processing module after being processed by the physical layer uplink, and the downlink signal sent by the upper expansion unit is obtained through the cascade port, and is sent to the CPRI/eCPRI data processing module after being processed by the physical layer downlink; the uplink signal sent by the CPRI/eCPRI data processing module is processed by a physical layer uplink and then sent to an upper-level expansion unit through the cascade port, and the downlink signal sent by the CPRI/eCPRI data processing module is processed by a physical layer downlink and then sent to a lower-level expansion unit through the cascade port; the address information of the lower-stage expansion unit and the remote unit connected with the lower-stage expansion unit is received through the cascade port and is sent to the cell resource relation management module after being processed by physical layer data; address information of the expansion unit, the subordinate expansion unit and the remote unit connected with the subordinate expansion unit is sent to the superior expansion unit through the cascade port; the CPRI/eCPRI data processing module receives the downlink signal sent by the baseband processing unit through the BU connection port, and sends the downlink signal of the same cell to the cascade data processing module or to the cascade data processing module and the direct connection data processing module after CPRI/eCPRI data distribution processing according to the central cascade configuration; and receiving uplink signals sent by the cascade data processing module or the cascade data processing module and the direct connection data processing module, and sending the uplink signals of the same cell to the baseband processing unit through the BU connection port after CPRI/eCPRI data combining processing is performed on the uplink signals of the same cell according to the central cascade configuration; address information of the expansion unit, the subordinate expansion unit and the connected remote unit is received, and is sent to the baseband processing unit through the BU connection port after CPRI/eCPRI data processing;

Or, receiving the downlink signal sent by the cascade data processing module, and sending the downlink signal of the same cell to the direct-connection data processing module after CPRI/eCPRI data distribution processing according to the central cascade configuration; and receiving the uplink signal sent by the direct-connection data processing module, and sending the uplink signal of the same cell to the cascade data processing module after CPRI/eCPRI data combination processing according to the central cascade configuration;

or the CPRI/eCPRI data processing module receives the cascade data processing module or receives the uplink signals sent by the cascade data processing module and the direct-connection data processing module, and according to the cascade configuration, the uplink signals of the same cell are subjected to CPRI/eCPRI data combination processing and then sent to the baseband processing unit; and receiving the downlink signal sent by the baseband processing unit through the BU connection port, and sending the downlink signal of the same cell to the cascade data processing module or to the cascade data processing module and the direct data processing module after performing CPRI/eCPRI data distribution processing according to the cascade configuration;

Or, receiving the uplink signals sent by the cascade data processing module or the cascade data processing module and the direct connection data module, performing CPRI/eCPRI data combining processing on the uplink signals of the same cell according to the cascade configuration, and then sending the uplink signals to an upper expansion unit; and receiving the downlink signal sent by the cascade data processing module, and sending the downlink signal of the same cell to the cascade data processing module or to the cascade data processing module and the direct connection data processing module after performing CPRI/eCPRI data distribution processing on the downlink signal of the same cell according to the cascade configuration;

2. The system of claim 1, wherein the baseband processing unit comprises a route configuration module, a device management module, a higher layer protocol stack module, a MAC layer processing module, a physical layer processing module, a transmission module, and a forwarding card;

3. The extended skin base station based room coverage system of claim 2,

the cell resource relation management module receives and stores the route association relation and cell expansion distribution and combination instructions; address information of the expansion unit and the connected remote unit is sent to the CPRI/eCPRI data processing module;

4. The extended pico-based room coverage system of claim 2, wherein the extension unit comprises an upper port and a lower port connecting the cascaded data processing modules;

the cell resource relation management module receives and stores the route association relation, and cell expansion distribution and combination instructions and sends the instructions to the cascade data processing module; address information of the expansion unit, the subordinate expansion unit and the connected remote unit is sent to the cascade data processing module;