CN107528814B - Entity management method, quick control medium access control entity and system - Google Patents

Abstract

The invention discloses an entity management method, a rapid control Medium Access Control (MAC) entity and a system, wherein the method comprises the following steps: generating a control signaling through a fast control Medium Access Control (MAC) entity; the quick control MAC entity is arranged in a central control unit; the quick control MAC entity arranged in the central control unit sends the control signaling to at least one real-time MAC entity; each real-time MAC entity in the at least one real-time MAC entity is disposed in a distribution unit, and each distribution unit can be disposed with one real-time MAC entity or multiple real-time MAC entities.

Description

Entity management method, quick control medium access control entity and system

Technical Field

The present invention relates to an entity management technology in the field of communications, and in particular, to an entity management method, a fast control Medium Access Control (MAC) entity, and a system.

Background

Aiming at a next generation forward network interface (NGFI) network architecture of a 5G network, an architecture that one Central Control Unit (CU) and a plurality of Distributed Units (DU) carry out processing together is adopted. Specifically, the central control unit may be a wireless Cloud Center (RCC), and the plurality of distribution units may be a plurality of Radio Remote Systems (RRS), such as shown in fig. 1. In the figure, the RCC completes big data operation, and then sends an instruction to the RRS, and the RRS completes resource allocation of a corresponding air interface on the basis of the RCC operation result. And each RRS carries out certain processing on the information collected from the air interface and reports the information to the RCC. The two-level architectural mode of RCC-RRS requires the repartitioning and functional distribution of the protocol stack functions placed on it. It should be understood that the RCC-RSS is also only an implementation example of the CU and the DU, and the actual networking architecture does not limit the CU-DU to only one implementation architecture.

In order to meet various performance indexes such as transmission network requirements, data processing delay requirements, data control requirements, and the like, a CU and a plurality of DU architectures need to be re-deployed.

Disclosure of Invention

In view of the above, the present invention provides an entity management method, a fast control MAC entity and a system thereof, which can at least solve the above problems in the prior art.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

the embodiment of the invention provides an entity management method, which comprises the following steps:

generating a control signaling through a fast control MAC entity; the quick control MAC entity is arranged in a central control unit;

the quick control MAC entity arranged in the central control unit sends the control signaling to at least one real-time MAC entity; each real-time MAC entity in the at least one real-time MAC entity is disposed in a distribution unit, and each distribution unit can be disposed with one real-time MAC entity or multiple real-time MAC entities.

The embodiment of the invention provides a quick control MAC entity, which is arranged in a central control unit and comprises the following components:

a signaling generation unit for generating a control signaling;

and the signaling sending unit is used for sending the control signaling to at least one real-time MAC entity.

An embodiment of the present invention provides an entity management system, where the system includes: a fast control MAC entity, and at least one real-time MAC entity; wherein the content of the first and second substances,

the quick control MAC entity is arranged in the central control unit and used for generating a control signaling; sending the control signaling to at least one real-time MAC entity;

the real-time MAC entity is arranged in a distribution unit and is used for receiving and processing the control instruction sent by the fast control AMC entity.

The embodiment of the invention provides an entity management method, a quick control MAC entity and a system, which can divide MAC protocol entities into two types, namely the quick control MAC entity and at least one real-time MAC entity, arrange the quick control MAC entity in a central control unit, arrange a plurality of real-time MAC entities in a plurality of distribution units respectively, and send control signaling by the quick control MAC entity aiming at the at least one real-time MAC entity. Therefore, even under the scene that the number of cells in 5G is increased, the central control unit can complete the scheduling and control of at least one real-time MAC entity through the MAC layer by increasing the MAC entities and ensure the computing capability of the central control unit; the control of the real-time MAC entities through the quick control MAC entity ensures that large-scale MAC is effectively supported and the issue of air interface signaling is quickly completed, thereby ensuring that the time delay of data transmission is reduced and the processing speed of the whole framework is improved.

Drawings

Fig. 1 is a schematic diagram of a structure between protocol entities in the prior art;

FIG. 2 is a flowchart illustrating an entity management method according to an embodiment of the present invention;

FIG. 3a is a diagram illustrating functional partitioning of MAC entities according to an embodiment of the present invention;

fig. 3b is a schematic diagram of a configuration location structure of an MAC entity according to an embodiment of the present invention;

fig. 4 is a schematic diagram illustrating a structure of a location where an MAC entity is located according to an embodiment of the present invention;

FIG. 5a is a diagram of MAC function partitioning;

FIG. 5b is a first diagram illustrating functional partitioning of FC-MAC and RT-MAC according to an embodiment of the present invention;

FIG. 6a is a diagram of MAC function partitioning;

FIG. 6b is a diagram illustrating the functional division of FC-MAC and RT-MAC according to the embodiment of the present invention;

fig. 7 is a schematic diagram illustrating a structure of a MAC entity for fast control according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of an entity management system according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The first embodiment,

An embodiment of the present invention provides an entity management method, as shown in fig. 2, the method includes:

step 201: generating a control signaling through a fast control Medium Access Control (MAC) entity; the quick control MAC entity is arranged in a central control unit;

step 202: the quick control MAC entity arranged in the central control unit sends the control signaling to at least one real-time MAC entity; each real-time MAC entity in the at least one real-time MAC entity is disposed in a distribution unit, and each distribution unit can be disposed with one real-time MAC entity or multiple real-time MAC entities.

In this embodiment, the central control unit is capable of performing big data operation, and may generate a corresponding operation result after completing the big data operation, and send the generated operation result to the distribution unit;

each distribution unit may correspond to a cell, and each distribution unit may be configured to perform resource allocation of air interfaces in the cell according to the operation result; in addition, each distribution unit can also collect information from the air interface and report the information to the central control unit.

In addition, since one distribution unit corresponds to one cell and one or more real-time MAC entities correspond to one cell, one or more real-time MAC entities may be provided in one distribution unit.

In this embodiment, the central control unit may be a wireless Cloud Center (RCC), and the plurality of distribution units may be a plurality of Radio Remote Systems (RRS). Aiming at an RCC-RRS distributed architecture and a multi-stage MAC function of a 5G access network, a general-fraction placement scheme of MAC on the distributed base station architecture is provided, and the scheme realizes the combination of the multi-stage MAC and the RCC-RRS architecture capable of effectively supporting various 4G/5G scene requirements by reasonably placing the multi-stage MAC function on the RCC-RRS.

Fig. 3a shows a general MAC protocol entity function scheme, in this embodiment, the MAC protocol entity function is divided into two functional modules: fast Control (FC) -MAC entities and real-time (RT) -MAC entities. Among them, FC-MAC is divided into two functions of Fast Signaling Control (Fast Signaling Control) and RT-MAC scheduling Control (RT-MAC Control). The RT-MAC is the current or current conventional MAC protocol entity function.

Based on the overall fractional relationship between the fast control MAC entity and the at least one real-time MAC entity performed in fig. 3a, the fast control MAC entity may be set in the central control unit, and the real-time MAC entity may be set in the distribution unit, which may be specifically referred to fig. 3 b.

Specifically, referring to fig. 4, the fast control MAC entity is set in the RCC, and then the real-time MAC entity is set in the RRS. FC-MAC is all put on RCC, RT-MAC is put on RRS, one RCC can correspond to a plurality of RRS (1 … m), each RRS has one RT-MAC, and one FC-MAC can correspond to a plurality of RT-MACs at the same time.

First, in this embodiment, an implementation of a fast signaling control function for fast controlling a MAC entity is described:

firstly, the generating of the control signaling through the fast control MAC entity arranged in the RCC includes:

acquiring the content of RRC signaling from a Radio Resource Control (RRC) entity through a quick control MAC entity arranged on an RCC;

and the rapid control MAC entity generates a control signaling based on the content of the RRC signaling.

Wherein the generating the scheduling instruction for the at least one real-time MAC entity may include: the rapid Control MAC entity encapsulates the scheduling command through a preset special PDCCH or a defined MAC Control Element (CE).

Specifically, the fast control MAC entity accepts RRC protocol signaling functions, which includes: the signaling function of the original RRC protocol entity needs to implement fast control and sink to the MAC function.

Wherein the RRC signaling comprises: air interface switching signaling and/or radio link reconfiguration signaling.

That is, the related signaling for air interface switching is sunk to the MAC entity for fast Control, and the Control is performed through the RRC air interface signaling, and now a special PDCCH or a defined MAC CE (MAC Control Element) is transmitted through the FC-MAC for fast Control.

Secondly, the method further comprises the following steps: at least one entity at the data link layer is functionally adjusted by a fast control MAC entity.

Wherein the at least one entity of the data link layer may be at least one entity of a PDCP entity, a DDR entity, and an RLC entity.

Specifically, at least one of the following is included:

the rapid control MAC entity adjusts at least one function of the PDCP entity;

the quick control MAC entity adjusts at least one function of the DDR entity;

and the rapid control MAC entity adjusts at least one function of the RLC entity.

For example, the MAC entity establishes connections with the PDCP entity, the DDR entity, and the RLC entity, and performs functional adjustment on the above entities based on the connections.

The fast control MAC entity adjusts at least one function of the DDR entity, and the adjustment comprises the following steps: controlling whether to start the DDR function;

the fast control MAC entity adjusts at least one function of a radio link layer control protocol (RLC) entity, and comprises the following steps: controlling whether the RLC entity starts a centralized distributed mode;

the fast control MAC entity carries out at least one function adjustment on a packet data convergence protocol PDCP entity, and comprises the following steps: controlling whether the PDCP entity starts a centralized distributed mode.

And a dynamic scheduling control function of the PDCP/DDR/RLC functional entity function. And dynamically fine-tuning the PDCP/DDR/RLC functions according to the overall control of RRC signaling (the RRC configures an optional function set through signaling, and the MAC selects specific functions for the PDCP/DDR/RLC in the function set).

For example, it may include: whether DDR function is needed, namely whether DDR can be transparently transmitted; whether PDCP/RLC enables centralized-distributed mode, etc.

The DDR function module is mainly used for completing the distribution of data received from the PDCP to the RLCCenter/RLCremote and the control of receiving, recombining and then sequentially delivering the data to the PDCP and the RLCCenter/RLCremote from the RLCCenter/RLCremote;

the RLC Entity may include an RLC core and an rlcreate functional Entity, and the two functional entities are mutual exclusion (mutual-exclusive RLC Entity), that is, the rlcreate does not exist when the RLC core exists, and similarly, the rlcreate does not exist when the rlcreate exists. RLCcenter/RLCremote.

It is to be understood that sinking such functionality into the fast control MAC entity enables faster control of entities such as PDCP, DDR and RLC.

Next, the following describes the implementation of the fast control MAC entity to control at least one real-time MAC entity in the RRS:

in the existing LTE architecture, the functions of MAC can be seen in fig. 5a, and it can be seen that in the LTE architecture, the MAC currently performs the functions of radio resource management, channel quality management, PDU control, and the like, and further determines the cell allocation of the terminal device based on the above management functions, and then schedules each terminal device. In this embodiment, the functions of the MAC are further divided based on the above-mentioned architecture, and a fast control MAC function is added to the MAC to perform overall processing, so that the scheme provided in this embodiment can complete scheduling and control of at least one MAC entity on the MAC layer, thereby ensuring that the transmission of air interface signaling is completed fast, and improving the processing speed of the overall architecture.

Specifically, based on fig. 5b, it can be seen that for the downlink MAC, the FC-MAC functions include Unicast Scheduling (Unicast Scheduling)/Priority Handling of users between Cells (Priority Handling of Cells for UEs), Multiplexing of users in a Cell (Multiplexing UEs in a Cell), Radio Quality management between Cells (Cell' Radio Quality Manager), PDU Controller, Channel Quality management (Channel Quality Manager), Radio Resource management (Radio Resource Manager), signaling control (signaling Controller), Unicast Scheduling (Unicast Scheduling)/, carrier Priority allocation of users in a Cell (Priority Handling of Cells in a Cell), multiplexed users in a member carrier (Multiplexing CCs), and the like, these protocol functions include control and assumed signaling control functions for RT-MAC.

Correspondingly, the real-time (RT) -MAC entity performs Unicast Scheduling/Priority Handling actions, Multiplexing UE of the terminal device, and HARQ according to the control signaling sent by the FC-MAC entity.

The above functions are further explained:

the method further comprises the following steps:

acquiring air interface resource information by rapidly controlling a wireless resource management function of terminal equipment in an MAC entity;

and/or the presence of a gas in the gas,

acquiring channel quality information by quickly controlling a terminal equipment channel quality management function in an MAC entity;

and/or the presence of a gas in the gas,

and acquiring the wireless air interface quality information of each cell by quickly controlling the inter-cell wireless air interface quality management function in the MAC entity.

Specifically, the radio resource management function of the terminal device is used to complete the occupancy management of the historical air interface resource of the UE and the usage management of the current air interface resource. The module manages resources in two aspects, one is a semi-static UE-specific radio resource configured by RRC, such as SRS, PUCCH, etc.; one is the air interface resource dynamically allocated by the MAC every TTI, such as PRB, PDCCH, etc. used as the smooth measurement of the UE channel.

The channel quality management function for the terminal device is used for managing the channel quality of the UE on the available cells, including the broadband and sub-band channel quality. The module receives the channel measurement parameters of the physical layer, calculates according to a certain algorithm, and is used for monitoring the channel quality of the UE in each corresponding cell. And when the MAC schedules the UE, the wireless resources are allocated according to the channel quality of the UE.

And the inter-cell wireless quality management function is used for managing the wireless air interface quality of each cell and providing parameter support for cooperation among the cells. The functional module calculates the average empty quality, the relevant interference and the like of each cell by adopting a relevant algorithm according to the channel quality of each UE in the cell so as to determine the load capacity of the cell. The specific UE that each cell can support needs to be decided according to the radio quality of the cell when the MAC schedules the UE.

Further, based on the above functions, the generating of the control signaling by the fast control MAC entity includes:

the rapid control MAC entity allocates a target cell for the terminal equipment according to at least one of the air interface resource information, the channel quality information and the wireless air interface quality information of each cell;

allocating a target real-time MAC entity to a terminal device based on a target cell allocated to the terminal device, and allocating the size of a data unit transmitted in the target cell to the terminal device;

taking the size of the target real-time MAC entity and the data unit as a first distribution result;

generating a control instruction for the target real-time MAC entity based at least on the first allocation result.

Specifically, referring to the Unicast Scheduling (Unicast Scheduling)/cell allocation for the terminal device (Priority Handling for UEs) function in fig. 5b, the cell allocation used by the UE is completed according to the Channel Quality Manager of the UE, the air interface Quality of the cell (cell' Radio Quality Manager), the service characteristics (RRC configuration), and other information. The functional module completes the collection of the cells available for each UE according to various air interface qualities, namely, the mapping from the logic channel of the UE to the cells is completed.

By aiming at the PDU control function of the terminal equipment, when packets transmitted by the UE meet the size indicated by the MAC, the method ensures that no influence is generated on the RLC, including the phenomenon that the SN number of the RLC cannot jump sharply, the RLC is provided with a new function except the traditional function, and the like. The downlink FC-MAC determines the size of SDU sent by the UE in each cell after finishing the scheduling of the UE in each cell; then, a packet is obtained from the RLC through a PDU Controller, and the PDU Controller ensures that the PDUs sent by the plurality of cells do not affect the RLC according to a corresponding algorithm.

The method further comprises the following steps: allocating Radio Bearers (RBs) to the terminal equipment through a fast control MAC entity arranged in the RCC; mapping the allocated RBs to the target real-time MAC entity.

Specifically, referring to fig. 5b, through Unicast Scheduling/Priority Handling for users in a cell and a function of a user multiplexed in a member carrier (Multiplexing UE in CC), Scheduling from a user in the cell to a carrier is completed, and mapping of a transport channel carried by a carrier of the UE from the carrier to the carrier in the cell is completed.

On this basis, according to a Scheduling result completed by the Unicast Scheduling/Priority Handling impact Cells for UEs, the UE that can be supported by each cell is completed through a Multiplexing processing (Multiplexing UEs in cell) function of the users in the cell, that is, in this TTI, the UE is scheduled in the cell, and mapping of the UE from the cell-cell carriers is completed.

Corresponding to the functions of the FC-MAC entities, in each real-time MAC entity, the user Scheduling in the cell is completed by receiving Unicast Scheduling/Priority Handling actions (Priority Handling UEs) for the user and control information such as resource Multiplexing (Multiplexing UEi) for the user, and the mapping of the transport channel carried by the carrier in the cell of the UE to the physical channel carried by the carrier in the cell is completed.

In addition, based on the above fig. 5b, the present embodiment also provides the following functions:

and (4) BCH function: the BCH data is still transmitted over each cell in the conventional manner.

Downlink CCCH function: the most suitable air interface channel of each UE can be selected according to the channel quality of each UE on each cell, so that the CCCH needs to be scheduled by two levels of cells and UEs.

The PCH function: according to the channel quality of each UE on each cell, the most suitable air interface channel of each UE may be selected and combined into a suitable PCH to be transmitted over the air interface. The PCH needs to go through two-level scheduling by the cell and the UE.

The generating of the control signaling through the fast control MAC entity set in the RCC further includes:

the quick control MAC entity selects an air interface bearing mode for the terminal equipment;

and the quick control MAC entity generates a control instruction aiming at the target real-time MAC entity of the terminal equipment based on the air interface bearing mode selected for the terminal equipment.

Specifically, the fast control MAC entity selects an air interface bearer mode for the terminal device, and the determination mode may be: various measurement information of each terminal device is reported through an RT-MAC and a physical layer (PHY), and the transmission resource requirement of each terminal device at an air interface is accurately sensed through the measurement information of each terminal device; acquiring the content of signaling of an RRC entity; and selecting an air interface bearing mode for each terminal device by combining the transmission resource requirement of each terminal device at the air interface and the content of the signaling of the RRC entity.

The content of the signaling of the RRC entity is obtained, the RRC entity may still perform the allocation of the air interface bearer mode for the terminal device, but no specific signaling is generated, the air interface bearer mode is sent to the fast control MAC entity, and finally the fast control MAC entity generates the scheduling instruction based on the air interface bearer mode allocated by the device. For a specific implementation process, see fig. 5a, which is not described herein again.

The selected air interface bearing mode can use an OFDM + CDMA mode to bear data and signaling of users, or use a non-orthogonal physical layer technology to start rapid data receiving and transmitting of some users. In this embodiment, the air interface bearer modes of the terminal device are not exhaustive.

The generating of the control signaling by the fast control MAC entity includes:

determining a data transmission type for each of the at least one real-time MAC entity; the data transmission type comprises data transmission of a control plane and/or data transmission of a user plane;

and generating the control instruction based on the data transmission type corresponding to the at least one real-time MAC entity.

In particular, the dynamic scheduling control of the RT-MAC real-time function. According to the overall Control of RRC signaling (RRC configures a function optional set through signaling, and MAC selects a specific function for RT-MAC in the function set), scheduling Control is carried out on RT-MAC functions, including whether only Control Plane (Control Plane) or User Plane (User Plane) corresponding data is transmitted and received or not, and whether Control Plane and User Plane data can be transmitted and received simultaneously.

On the basis of the generation and transmission of the downlink information, the present embodiment may also perform corresponding description on transmission and processing of the uplink signaling, and specifically, the method further includes:

and acquiring the uplink signaling uploaded by at least one terminal device from the at least one real-time MAC entity through a quick control MAC entity arranged in the RCC, and analyzing and processing the uplink signaling.

The conventional MAC can refer to the functions of the uplink MAC in fig. 6a and 5G. Referring to fig. 6b, for the uplink MAC, a processing function of the FC-MAC for the uplink signaling corresponds to the downlink, that is, the processing function also includes functions of Scheduling/Priority Handling of uplink Cells for the UE, Multiplexing UEs in Cell, PDU Controller, Scheduling/Priority Handling in Cell, Multiplexing in CC, and the like. The RT-MAC includes Scheduling/Priority Handling, Multiplexing, HARQ and other functions. It should be understood that the processing functions of the uplink signaling are all based on receiving the uplink signaling actively reported by the terminal device side on the basis of the control of the downlink signaling, or the feedback information for the downlink signaling, and the processing of the uplink signaling and the generation of the downlink signaling may be mutually reversible processing processes.

When packets transmitted by the UE are in accordance with the size indicated by the MAC (provided by Scheduling/Priority Handling amplitude Cells for the UE and Unicast Scheduling/Priority Handling function modules), the uplink PDU Controller module of the UE ensures that no influence is caused on the RLC, including that the SN of the RLC cannot jump sharply, the RLC cannot have a new function except for a conventional function, and the like. After MAC PDU received by uplink MAC gets SDU through MAC unpacking function, PDU Controller sends RLC to process subsequently, PDU Controller ensures PDU sent by multiple cells not to influence RLC according to corresponding algorithm.

Scheduling/Priority Handling of the Cells for the UE configures the selectable channels of the multiple Cells of the UE according to the network side, to complete the cell allocation used by the UE, for example, the network side configures a periodic SR for the UE in each of the multiple Cells, and the UE may select a suitable cell to send the SR according to the quality of an air interface channel. Such as SPS allocated resources, CQI reported periodically, and the like, thereby completing mapping of the logical channel of the UE to the cell.

The Multiplexing UE in cell completes the RB that each cell can transmit, i.e. the data content that the UE transmits in the cell in this TTI.

And Scheduling/Priority Handling in Cells completes the Scheduling of the UE in the Cells according to the Scheduling/Priority Handling in Cells for the Scheduling result of the UE, thereby completing the selection of the carrier of the UE in the Cells and realizing the mapping of the UE from the Cells to the carriers in the Cells.

The Multiplexing UE in CC completes the data that each carrier can finally send, that is, in this TTI, the data content sent by the UE in the cell completes the mapping of the carrier transport channel carried by the UE from the cell-cell.

The Unicast Scheduling/Priority Handling and Multiplexing UE completes the Scheduling of the UE in the carrier, the function of the Scheduling/Priority Handling and Multiplexing UE is the same as that of the traditional MAC function, and the mapping of a transmission channel carried by the carrier in the cell of the UE and a physical channel carried by the carrier in the cell is completed.

Uplink CCCH function: the UE may select the most suitable air interface channel to send to the network side according to the channel quality (measured by the physical layer) of the UE on each cell, that is, in the random access process, the UE may send Msg1/Msg3 on different cells, so the CCCH needs to be scheduled by two levels of cells and UEs.

During scheduling, the MAC is quickly controlled to perform cell-level scheduling, and according to quality information (including load, number of PRBs on edge, etc.) of a cell and quality of an air interface of each UE on its associated cell, the MAC is quickly controlled to complete mapping processing of one UE and a plurality of cells, it is determined that each UE can receive and transmit data on the plurality of cells, and a plurality of most suitable cells are configured for the UE according to requirements of the UE to complete transmission of the data on the air interface. Secondly, the real-time MAC completes the mapping function of the UE and the wireless resources of the cell level according to the specific requirements of the UE, and completes the calculation of the size of the packet sent by the UE. Finally, if the downlink processing is carried out, data is applied to the RLC according to the packet size; and if the data is uplink data, waiting for the UE to transmit.

It can be seen that, by adopting the above scheme, the MAC protocol entities can be divided into two types, namely, a fast control MAC entity and at least one real-time MAC entity, the fast control MAC entity is arranged in the RCC, the real-time MAC entity is arranged in the RRS, and the fast control MAC entity sends the control signaling to the at least one real-time MAC entity. Therefore, even under the scene that the number of cells in 5G is increased greatly, the computing capacity of the cloud center can be ensured by adding the quick control MAC entity, and the effective support of large-scale MAC is ensured by controlling a plurality of real-time MAC entities through one quick control MAC entity, so that the processing efficiency of the system is improved.

Example II,

An embodiment of the present invention provides a MAC entity for fast control, as shown in fig. 7, including:

a signaling generation unit 71, configured to generate control signaling;

a signaling sending unit 72, configured to send the control signaling to at least one real-time MAC entity.

Aiming at an RCC-RRS distributed architecture and multi-stage MAC functions of a 5G access network, the patent provides a general-fraction placement scheme of MAC on a distributed base station architecture, and the scheme realizes the combination of multi-stage MAC and RCC-RRS architectures capable of effectively supporting various 4G/5G scene requirements by reasonably placing the multi-stage MAC functions on the RCC-RRS.

First, in this embodiment, an implementation of a fast signaling control function for fast controlling a MAC entity is described:

the signaling generation unit is used for acquiring the content of an RRC signaling from a Radio Resource Control (RRC) entity through a quick control MAC entity; and generating control signaling based on the content of the RRC signaling.

The signaling generation unit is configured to perform encapsulation of a scheduling instruction through a preset special PDCCH or a defined MAC Control Element (CE).

Specifically, the fast control MAC entity accepts RRC protocol signaling functions, which includes: the signaling function of the original RRC protocol entity needs to implement fast control and sink to the MAC function.

Wherein the RRC signaling comprises: air interface switching signaling and/or radio link reconfiguration signaling.

That is, the related signaling for air interface switching is sunk to the MAC entity for fast Control, and the Control is performed through the RRC air interface signaling, and now a special PDCCH or a defined MAC CE (MAC Control Element) is transmitted through the FC-MAC for fast Control.

And secondly, the signaling generation unit is configured to perform function adjustment on at least one entity in a data link layer through a fast control MAC entity arranged in the RCC.

Wherein the at least one entity of the data link layer may be at least one entity of a PDCP entity, a DDR entity, and an RLC entity. That is, specifically, at least one of the following is included:

adjusting at least one function of the PDCP entity;

adjusting at least one function of the DDR entity;

the at least one function is adjusted for the RLC entity.

For example, the MAC entity establishes connections with the PDCP entity, the DDR entity, and the RLC entity, and performs functional adjustment on the above entities based on the connections.

The fast control MAC entity adjusts at least one function of the DDR entity, and the adjustment comprises the following steps: controlling whether to start the DDR function;

the signaling generation unit is used for controlling whether the RLC entity starts a centralized distributed mode or not;

the signaling generating unit is configured to control whether the PDCP entity starts a centralized distributed mode.

And a dynamic scheduling control function of the PDCP/DDR/RLC functional entity function. And dynamically fine-tuning the PDCP/DDR/RLC functions according to the overall control of RRC signaling (the RRC configures an optional function set through signaling, and the MAC selects specific functions for the PDCP/DDR/RLC in the function set).

For example, it may include: whether DDR function is needed, namely whether DDR can be transparently transmitted; whether PDCP/RLC enables centralized-distributed mode, etc.

The DDR function module is mainly used for completing the distribution of data received from the PDCP to the RLCCenter/RLCremote and the control of receiving, recombining and then sequentially delivering the data to the PDCP and the RLCCenter/RLCremote from the RLCCenter/RLCremote;

the RLC Entity may include an RLC core and an rlcreate functional Entity, and the two functional entities are mutual exclusion (mutual-exclusive RLC Entity), that is, the rlcreate does not exist when the RLC core exists, and similarly, the rlcreate does not exist when the rlcreate exists. RLCcenter/RLCremote.

It is to be understood that sinking such functions into the RC-MAC entity enables faster control of PDCP, DDR, and RLC entities.

Next, the following describes the implementation of the fast control MAC entity to control at least one real-time MAC entity in the RRS:

in the existing LTE architecture, the functions of MAC can be seen in fig. 5a, and it can be seen that in the LTE architecture, the MAC currently performs the functions of radio resource management, channel quality management, PDU control, and the like, and further determines the cell allocation of the terminal device based on the above management functions, and then schedules each terminal device.

In this embodiment, the functions of the MAC are divided, and a fast control MAC function is added to the MAC to perform overall processing, so that the scheduling and control of at least one MAC entity can be completed on the MAC layer, thereby ensuring that the issuing of air interface signaling is completed quickly, and improving the processing speed of the overall architecture.

Based on fig. 5b, it can be seen that, for the downlink MAC, the functions of the FC-MAC include Unicast Scheduling (Unicast Scheduling)/allocating Cells for the terminal devices (Priority Handling _ for Cells), Multiplexing of terminal devices in a Cell (Multiplexing UEs in Cells), inter-Cell Radio Quality management (Cell' Radio Quality Manager), PDU Controller, Channel Quality management (Channel Quality Manager), Radio Resource management (Radio Resource Manager), signaling control (signaling Controller), Unicast Scheduling (Unicast Scheduling)/allocating Carriers for the terminal devices in a Cell (Priority Handling _ for Cells), Multiplexing users in Carriers (Multiplexing UEs in CCs), and the like, and these protocol functions include the control function of the RT-MAC and the signaling control function.

Correspondingly, the real-time (RT) -MAC entity includes functions of Unicast Scheduling/Priority Handling UEs, Multiplexing UEs for terminal devices, HARQ, and the like according to the control signaling sent by the FC-MAC entity.

The above functions are further explained:

the fast control MAC entity further comprises:

a radio resource management unit 73, configured to acquire air interface resource information;

and/or the presence of a gas in the gas,

a channel quality management unit 74 for acquiring channel quality information;

and/or the presence of a gas in the gas,

an inter-cell wireless air interface quality management unit 75, configured to obtain wireless air interface quality information of each cell.

Specifically, the radio resource management function of the terminal device is used to complete the occupancy management of the historical air interface resource of the UE and the usage management of the current air interface resource. The module manages resources in two aspects, one is a semi-static UE-specific radio resource configured by RRC, such as SRS, PUCCH, etc.; one is the air interface resource dynamically allocated by the MAC every TTI, such as PRB, PDCCH, etc. used as the smooth measurement of the UE channel.

The channel quality management function for the terminal device is used for managing the channel quality of the UE on the available cells, including the broadband and sub-band channel quality. The module receives the channel measurement parameters of the physical layer, calculates according to a certain algorithm, and is used for monitoring the channel quality of the UE in each corresponding cell. And when the MAC schedules the UE, the wireless resources are allocated according to the channel quality of the UE.

And the inter-cell wireless quality management function is used for managing the wireless air interface quality of each cell and providing parameter support for cooperation among the cells. The functional module calculates the average empty quality, the relevant interference and the like of each cell by adopting a relevant algorithm according to the channel quality of each UE in the cell so as to determine the load capacity of the cell. The specific UE that each cell can support needs to be decided according to the radio quality of the cell when the MAC schedules the UE.

Further, based on the above functions, the signaling generating unit is configured to allocate, by the fast control MAC entity disposed in the RCC, a target cell to the terminal device according to at least one of air interface resource information, channel quality information, and wireless air interface quality information of each cell;

allocating a target real-time MAC entity for the terminal equipment and allocating the size of a data unit transmitted in a target cell for the terminal equipment as a first allocation result based on the target cell allocated for the terminal equipment;

generating a control instruction for the target real-time MAC entity based at least on the first allocation result.

Specifically, referring to the Unicast Scheduling (Unicast Scheduling)/cell allocation for the terminal device (Priority Handling for UEs) function in fig. 5b, the cell allocation used by the UE is completed according to the Channel Quality Manager of the UE, the air interface Quality of the cell (cell' Radio Quality Manager), the service characteristics (RRC configuration), and other information. The functional module completes the collection of the cells available for each UE according to various air interface qualities, namely, the mapping from the logic channel of the UE to the cells is completed.

By aiming at the PDU control function of the terminal equipment, when packets transmitted by the UE meet the size indicated by the MAC, the method ensures that no influence is generated on the RLC, including the phenomenon that the SN number of the RLC cannot jump sharply, the RLC is provided with a new function except the traditional function, and the like. After the downlink FC-MAC finishes Scheduling the UE in each Cell (after the Scheduling is finished by a Unicast Scheduling/Priority Handling order Cells for UEs, Unicast Scheduling/Priority Handling order Carriers for UEs in Cells 1, Unicast Scheduling/Priority Handling order Cells UEi and Multiplexing UE in Cells, and a Multiplexing UEi function module finishes Scheduling), determining the size of the SDU sent by the UE in the Cell; then, a packet is obtained from the RLC through a PDU Controller, and the PDU Controller ensures that the PDUs sent by the plurality of cells do not affect the RLC according to a corresponding algorithm.

The signaling generation unit is configured to allocate a Radio Bearer (RB) to the terminal device; mapping the allocated RBs to the target real-time MAC entity.

Specifically, referring to fig. 5b, through the functions of Unicast Scheduling/allocating terminal devices (Priority Handling for UEs in a cell) in a cell and Multiplexing UEs (Multiplexing UEs in a CC) in a member carrier, Scheduling from a user in the cell to a carrier is completed, and mapping of a transport channel carried by a UE from the carrier to the carrier in the cell is completed.

On this basis, according to a Scheduling result completed by the Unicast Scheduling/Priority Handling impact Cells for UEs, the UE that can be supported by each cell is completed through a resource Multiplexing (Multiplexing UEs in cell) function of the terminal device in the cell, that is, in this TTI, the UE is scheduled in the cell, and mapping of the UE from the cell-cell internal carrier is completed.

Corresponding to the functions of the FC-MAC entities, in each real-time MAC entity, by receiving control information such as Unicast Scheduling, resource allocation (Priority Handling UEs) of the terminal device, and resource Multiplexing (Multiplexing UEi) of the terminal device, user Scheduling in the cell is completed, and mapping of a transport channel carried by a carrier in the cell of the UE to a physical channel carried by the carrier in the cell is completed.

In addition, based on the above fig. 5b, the present embodiment also provides the following functions:

and (4) BCH function: the BCH data is still transmitted over each cell in the conventional manner.

Downlink CCCH function: the most suitable air interface channel of each UE can be selected according to the channel quality of each UE on each cell, so that the CCCH needs to be scheduled by two levels of cells and UEs.

The PCH function: according to the channel quality of each UE on each cell, the most suitable air interface channel of each UE may be selected and combined into a suitable PCH to be transmitted over the air interface. The PCH needs to go through two-level scheduling by the cell and the UE.

The signaling generation unit is used for selecting an air interface bearing mode for the terminal equipment; and generating a control instruction aiming at the target real-time MAC entity of the terminal equipment based on the air interface bearing mode selected for the terminal equipment.

Specifically, the fast control MAC entity selects an air interface bearer mode for the terminal device, and the determining mode may be: various measurement information of each terminal device is reported through an RT-MAC and a physical layer (PHY), and the transmission resource requirement of each terminal device at an air interface is accurately sensed through the measurement information of each terminal device; acquiring the content of signaling of an RRC entity; and selecting an air interface bearing mode for each terminal device by combining the transmission resource requirement of each terminal device at the air interface and the content of the signaling of the RRC entity.

The content of the signaling of the RRC entity is obtained, the RRC entity may still perform the allocation of the air interface bearer mode for the terminal device, but no specific signaling is generated, the air interface bearer mode is sent to the fast control MAC entity, and finally the fast control MAC entity generates the scheduling instruction based on the air interface bearer mode allocated by the device. For a specific implementation process, see fig. 5a, which is not described herein again.

The selected air interface bearing mode can use an OFDM + CDMA mode to bear data and signaling of users, or use a non-orthogonal physical layer technology to start rapid data receiving and transmitting of some users. In this embodiment, the air interface bearer modes of the terminal device are not exhaustive.

The signaling generating unit is configured to determine a data transmission type for each of the at least one real-time MAC entity; the data transmission type comprises data transmission of a control plane and/or data transmission of a user plane; and generating the control instruction based on the data transmission type corresponding to the at least one real-time MAC entity.

In particular, the dynamic scheduling control of the RT-MAC real-time function. According to the overall Control of RRC signaling (RRC configures a function optional set through signaling, and MAC selects a specific function for RT-MAC in the function set), scheduling Control is carried out on RT-MAC functions, including whether only Control Plane (Control Plane) or User Plane (User Plane) corresponding data is transmitted and received or not, and whether Control Plane and User Plane data can be transmitted and received simultaneously.

On the basis of the generation and transmission of the downlink information, the method further comprises the following steps:

and the signaling processing unit 76 is configured to acquire, from the at least one real-time MAC entity, an uplink signaling uploaded by the at least one terminal device through a fast control MAC entity arranged in the RCC, and analyze and process the uplink signaling.

For the conventional MAC, as shown in fig. 6a, the uplink MAC of 5G is added with a MAC PDU controller function for the UE, and scheduling/priority handling amplitude cells for the UE, Multiplexing UE in cell, scheduling/priority handling in cell, and Multiplexing UE in CC functions mapped to the UE and cell level and carrier level radio resource.

Referring to fig. 6b, for the uplink MAC, functions that can be provided by the FC-MAC correspond to downlink, that is, the functions also include Scheduling/Priority Handling amplitude Cells for UEs, Multiplexing UEs in Cells, PDU controllers, Scheduling/Priority Handling in Cells, Multiplexing in CCs, and the protocol functions include signaling control functions that are controlled and assumed by RT-MAC. The RT-MAC includes Scheduling/Priority Handling, Multiplexing, HARQ and other functions. It should be understood that the processing functions of the uplink signaling are all based on receiving uplink signaling actively reported by the terminal device side on the basis of the control of the downlink signaling, or feedback information for the downlink signaling, and the processing of the uplink signaling and the generation of the downlink signaling may be mutually reversible processes.

When packets transmitted by the UE are in accordance with the size indicated by the MAC (provided by Scheduling/Priority Handling amplitude Cells for the UE and Unicast Scheduling/Priority Handling function modules), the uplink PDU Controller module of the UE ensures that no influence is caused on the RLC, including that the SN of the RLC cannot jump sharply, the RLC cannot have a new function except for a conventional function, and the like. After MAC PDU received by uplink MAC gets SDU through MAC unpacking function, PDU Controller sends RLC to process subsequently, PDU Controller ensures PDU sent by multiple cells not to influence RLC according to corresponding algorithm.

Scheduling/Priority Handling of the Cells for the UE configures the selectable channels of the multiple Cells of the UE according to the network side, to complete the cell allocation used by the UE, for example, the network side configures a periodic SR for the UE in each of the multiple Cells, and the UE may select a suitable cell to send the SR according to the quality of an air interface channel. Such as SPS allocated resources, CQI reported periodically, and the like, thereby completing mapping of the logical channel of the UE to the cell.

The Multiplexing UE in cell completes the RB that each cell can transmit, i.e. the data content that the UE transmits in the cell in this TTI.

And Scheduling/Priority Handling in Cells completes the Scheduling of the UE in the Cells according to the Scheduling/Priority Handling in Cells for the Scheduling result of the UE, thereby completing the selection of the carrier of the UE in the Cells and realizing the mapping of the UE from the Cells to the carriers in the Cells.

The Multiplexing UE in CC completes the data that each carrier can finally send, that is, in this TTI, the data content sent by the UE in the cell completes the mapping of the carrier transport channel carried by the UE from the cell-cell.

The Unicast Scheduling/Priority Handling and Multiplexing UE completes the Scheduling of the UE in the carrier, the function of the Scheduling/Priority Handling and Multiplexing UE is the same as that of the traditional MAC function, and the mapping of a transmission channel carried by the carrier in the cell of the UE and a physical channel carried by the carrier in the cell is completed.

Uplink CCCH function: the UE may select the most suitable air interface channel to send to the network side according to the channel quality (measured by the physical layer) of the UE on each cell, that is, in the random access process, the UE may send Msg1/Msg3 on different cells, so the CCCH needs to be scheduled by two levels of cells and UEs.

During scheduling, the MAC first performs cell-level scheduling. According to the quality information (including load, the number of PRBs on the edge, and the like) of the cells and the quality of the air interface of each UE on the relevant cell, the MAC finishes the mapping processing of one UE and a plurality of cells, decides that each UE can receive and transmit data on the plurality of cells, and configures a plurality of most suitable cells for the UE according to the requirements of the UE to finish the transmission of the data on the air interface. Secondly, the MAC completes the mapping function of the UE and the wireless resources of the cell level according to the specific requirements of the UE, and completes the calculation of the size of the packet sent by the UE. Finally, if the downlink processing is carried out, data is applied to the RLC according to the packet size; and if the data is uplink data, waiting for the UE to transmit.

It can be seen that, by adopting the above scheme, the MAC protocol entities can be divided into two types, namely, a fast control MAC entity and at least one real-time MAC entity, the fast control MAC entity is arranged in the RCC, the real-time MAC entity is arranged in the RRS, and the fast control MAC entity sends the control signaling to the at least one real-time MAC entity. Therefore, even under the scene that the number of cells in 5G is increased greatly, the cloud base station can provide more abundant computing power and can effectively support large-scale MAC.

In addition, based on the description of the two embodiments, an entity management system may also be provided, as shown in fig. 8, including: a fast control MAC entity 81, and at least one real time MAC entity 82; wherein the content of the first and second substances,

the quick control MAC entity is arranged in the central control unit and used for generating a control signaling; sending the control signaling to at least one real-time MAC entity;

the real-time MAC entity is arranged in the distribution unit and used for receiving and processing the control instruction sent by the quick control MAC entity.

The function of the above-mentioned fast control MAC entity is the same as the embodiment, and is not described herein again.

The integrated module according to the embodiment of the present invention may also be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as an independent product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product stored in a storage medium, and including several instructions for enabling a computer device (which may be a personal computer, a network device, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims (19)

1. A method of entity management, the method comprising:

generating a control signaling through a fast control Medium Access Control (MAC) entity; the quick control MAC entity is arranged in a central control unit;

the quick control MAC entity arranged in the central control unit sends the control signaling to at least one real-time MAC entity; each real-time MAC entity in the at least one real-time MAC entity is arranged in a distribution unit, and each distribution unit can be provided with one real-time MAC entity or a plurality of real-time MAC entities; the rapid control MAC entity receives a Radio Resource Control (RRC) protocol signaling function;

wherein the central control unit comprises a wireless cloud center (RCC); the distribution unit comprises a radio remote system RRS;

the fast control MAC entity is used for realizing at least one of the following functions: the wireless resource control, the infinite resource management function of the terminal equipment, the channel quality management function of the terminal equipment and the wireless air interface quality management function among cells.

2. The method of claim 1, wherein the generating control signaling by the fast control MAC entity comprises:

acquiring the content of RRC signaling from a Radio Resource Control (RRC) entity through a quick control MAC entity;

and the rapid control MAC entity generates a control signaling based on the content of the RRC signaling.

3. The method of claim 1, further comprising:

acquiring air interface resource information by rapidly controlling a wireless resource management function of terminal equipment in an MAC entity;

and/or the presence of a gas in the gas,

acquiring channel quality information by quickly controlling a terminal equipment channel quality management function in an MAC entity;

and/or the presence of a gas in the gas,

and acquiring the wireless air interface quality information of each cell by quickly controlling the inter-cell wireless air interface quality management function in the MAC entity.

4. The method of claim 3, wherein the generating control signaling by the fast control MAC entity comprises:

the rapid control MAC entity allocates a target cell for the terminal equipment according to at least one of the air interface resource information, the channel quality information and the wireless air interface quality information of each cell;

allocating a target real-time MAC entity to a terminal device based on a target cell allocated to the terminal device, and allocating the size of a data unit transmitted in the target cell to the terminal device;

taking the size of the target real-time MAC entity and the data unit as a first distribution result;

generating control signaling for the target real-time MAC entity based at least on the first allocation result.

5. The method of claim 4, further comprising:

allocating a Radio Bearer (RB) to the terminal equipment through a quick control Media Access Control (MAC) entity;

mapping the allocated RBs to the target real-time MAC entity.

6. The method of claim 4, wherein the generating control signaling by the fast control MAC entity further comprises:

the quick control MAC entity selects an air interface bearing mode for the terminal equipment;

and the rapid control MAC entity generates a control signaling aiming at a target real-time MAC entity of the terminal equipment based on the air interface bearing mode selected for the terminal equipment.

7. The method of claim 1, wherein the generating control signaling by the fast control MAC entity comprises:

determining a data transmission type for each of the at least one real-time MAC entity; the data transmission type comprises data transmission of a control plane and/or data transmission of a user plane;

and generating the control signaling based on the data transmission type corresponding to the at least one real-time MAC entity.

8. The method of claim 1, further comprising:

at least one entity at the data link layer is functionally adjusted by a fast control MAC entity.

9. The method according to any one of claims 1-8, further comprising:

and acquiring the uplink signaling uploaded by at least one terminal device from the at least one real-time MAC entity through the quick control MAC entity, and analyzing and processing the uplink signaling.

10. A fast control MAC entity is characterized in that the fast control MAC entity is arranged in a central control unit and comprises:

a signaling generation unit, configured to receive a radio resource control RRC protocol signaling function by generating a control signaling;

a signaling sending unit, configured to send the control signaling to at least one real-time MAC entity;

wherein the central control unit comprises a wireless cloud center (RCC); the distribution unit comprises a radio remote system RRS;

the fast control MAC entity is used for realizing at least one of the following functions: the wireless resource control, the infinite resource management function of the terminal equipment, the channel quality management function of the terminal equipment and the wireless air interface quality management function among cells.

11. The fast control MAC entity of claim 10,

the signaling generation unit is used for acquiring the content of the RRC signaling from the RRC entity; and generating control signaling based on the content of the RRC signaling.

12. The fast control MAC entity of claim 10, wherein the fast control MAC entity further comprises:

a radio resource management unit, configured to acquire air interface resource information;

and/or the presence of a gas in the gas,

a channel quality management unit for acquiring channel quality information;

and/or the presence of a gas in the gas,

and the inter-cell wireless air interface quality management unit is used for acquiring the wireless air interface quality information of each cell.

13. The fast control MAC entity of claim 12,

the signaling generation unit is used for allocating a target cell for the terminal equipment according to at least one of the air interface resource information, the channel quality information and the wireless air interface quality information of each cell; allocating a target real-time MAC entity to a terminal device based on a target cell allocated to the terminal device, and allocating the size of a data unit transmitted in the target cell to the terminal device; taking the size of the target real-time MAC entity and the data unit as a first distribution result; generating control signaling for the target real-time MAC entity based at least on the first allocation result.

14. The fast control MAC entity of claim 13, wherein the signaling generating unit is configured to allocate a radio bearer RB to the terminal device; mapping the allocated RBs to the target real-time MAC entity.

15. The MAC entity of claim 13, wherein the signaling generation unit is configured to select an air interface bearer mode for the terminal device; and generating a control signaling aiming at a target real-time MAC entity of the terminal equipment according to the air interface bearing mode selected for the terminal equipment.

16. The fast control MAC entity of claim 10, wherein the signaling generating unit is configured to determine a data transmission type for each of the at least one real-time MAC entity; the data transmission type comprises data transmission of a control plane and/or data transmission of a user plane; and generating the control signaling based on the data transmission type corresponding to the at least one real-time MAC entity.

17. The fast control MAC entity of claim 10, wherein the signaling generation unit is configured to perform a function adjustment on at least one entity at a data link layer.

18. The fast control MAC entity of any of claims 10-17, further comprising:

and the signaling processing unit is used for acquiring the uplink signaling uploaded by the at least one terminal device from the at least one real-time MAC entity, and analyzing and processing the uplink signaling.

19. An entity management system, the system comprising: a fast control MAC entity, and at least one real-time MAC entity; wherein the content of the first and second substances,

the quick control MAC entity is arranged in the central control unit and used for generating a control signaling; sending the control signaling to at least one real-time MAC entity; carrying a Radio Resource Control (RRC) protocol signaling function;

the real-time MAC entity is arranged in the distribution unit and used for receiving and processing the control signaling sent by the quick control MAC entity;

wherein the central control unit comprises a wireless cloud center (RCC); the distribution unit comprises a radio remote system RRS;

the fast control MAC entity is used for realizing at least one of the following functions: the wireless resource control, the infinite resource management function of the terminal equipment, the channel quality management function of the terminal equipment and the wireless air interface quality management function among cells.

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