KR101515594B1 - Apparatus for processing digital signal, apparatus for processing wireless siganl and signal processing system - Google Patents

Abstract

There is provided a digital signal processing device, a wireless signal processing device, and a signal processing system according to an embodiment of the present invention. Here, the digital signal processing device is a digital signal processing device physically separated from a wireless signal processing device installed in a service area to process a wireless signal and connected to one or more enterprise core systems to process a digital signal, A radio resource allocation unit allocating resource blocks different from one another among a plurality of resource blocks included in the band for each one or more carriers; And a communication unit for transmitting the at least one carrier-specific resource allocation information allocated by the radio resource allocation unit to the radio signal processor.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital signal processing apparatus, a wireless signal processing apparatus,

The present invention relates to a digital signal processing device, a wireless signal processing device, and a signal processing system.

Generally, a communication base station is largely included in one physical system together with a digital signal processing unit and a radio signal processing unit. However, such a system has a limitation in the optimization of the cell design because the base station including all the processing units must be installed in the cell. To improve this, a plurality of antennas are connected to a single base station, and cells are formed in a required manner to reduce a coverage hole.

However, this approach allows efficient cell design, but it is difficult to maximize system capacity. Therefore, there is a need for a new structure and transmission method of the base station to maximize the radio capacity.

Unlike the existing base station system, the CCC (Cloud Communication Center) proposed in the past has separated the digital signal processing unit (DU) of the base station and the radio signal processing unit (RU) And the RU is a wireless network technology installed in the service area.

At this time, it is general that the wireless signal processing unit installed in an arbitrary service area and the digital signal processing unit installed in the center are constituted by the same company, that is, a system of one provider. In other words, after the reception of the radio signal using the frequency band of the same operator and the digital signal processing are performed, it is likewise transmitted to the core system of the same operator.

SUMMARY OF THE INVENTION The present invention provides a digital signal processing apparatus, a radio signal processing apparatus, and a signal processing system for controlling radio resource allocation so that a plurality of operators can share a network in a service area.

According to an aspect of the present invention, a digital signal processing apparatus includes a digital signal processing apparatus that is physically separated from a wireless signal processing apparatus installed in a service area and processes a wireless signal, A radio resource allocation unit allocating different resource blocks among a plurality of resource blocks included in a predefined frequency band for each of at least one provider; And a communication unit for transmitting the at least one carrier-specific resource allocation information allocated by the radio resource allocation unit to the radio signal processor.

In this case,

The predefined frequency band may be divided into one or more frequency bands and allocated to one or more operators, and a plurality of resource blocks included in each allocated frequency band may be allocated to the one or more operators.

Also, the radio resource allocation unit may allocate,

The plurality of resource blocks included in the predefined frequency band may be allocated to the at least one provider in proportion to the ratio information.

In addition,

And may include information on the number of resource blocks allocated to each of the one or more carriers among all resource blocks included in the predefined frequency band.

In addition,

And may include ratio information of resource blocks allocated during a specific time period.

In addition,

And may include relative ratio information between the at least one provider.

Also, the radio resource allocation unit may allocate,

If a business operator is added, radio resource allocation is adjusted to reflect the added operator,

Wherein,

And the resource allocation information adjusted by the radio resource allocation unit may be transmitted to the radio signal processor.

According to another aspect of the present invention, a wireless signal processing apparatus includes a wireless signal processing apparatus that is physically separated from a digital signal processing apparatus that is connected to at least one carrier core system and processes a digital signal, A radio resource allocation unit allocating different resource blocks among a plurality of resource blocks included in a predefined frequency band for each of at least one provider; And at least one wireless antenna for communicating with a wireless terminal of one or more carriers using the resource block allocated by the wireless resource allocator.

And a communication unit connected to the digital signal processing apparatus and receiving resource allocation information from the digital signal processing apparatus,

Wherein the radio resource allocation unit comprises:

According to the resource allocation information, the resource blocks may be allocated to one or more carriers.

The at least one wireless antenna may further comprise:

It is possible to communicate with the wireless terminals of one or more carriers using the resource blocks included in the respective frequency bands allocated to the respective carriers.

The at least one wireless antenna may further comprise:

And may communicate with a wireless terminal of one or more carriers using a resource block allocated according to the ratio information of each of the plurality of resource blocks included in the predefined frequency band.

According to another aspect of the present invention, there is provided a signal processing system, which is connected to a core system of each of at least one provider, allocates different resource blocks among a plurality of resource blocks included in a predefined frequency band, A digital signal processing device for generating resource allocation information; And a wireless communication unit that is physically separated from the digital signal processing apparatus and is installed in a service area to process a wireless signal, And a wireless signal processing device for communicating with the wireless signal processing device.

At this time, the radio signal processing apparatus includes:

And may be a plurality of wireless signal processing devices respectively installed in different service areas.

The digital signal processing apparatus may further include:

The mobility management device of the business entity can be selected by extracting the business entity unique code included in the attach message received from the wireless signal processing device or the message of the Arial connection setup completion.

A mobility management apparatus connected to the at least one carrier core system and integrally managing the mobility of the wireless terminals of the at least one carrier; And a gateway device coupled to the mobility management device and the one or more carrier core systems,

The digital signal processing apparatus comprising:

The access point name is received from the mobility management apparatus to obtain the access address of the at least one provider core system, and the gateway apparatus can request connection to the corresponding provider core system using the access address.

According to the embodiment of the present invention, it is possible to control operation and radio resource allocation of multi-sites having different frequency bands for each service provider in a certain service area.

1 is a configuration diagram of a signal processing system according to an embodiment of the present invention.
2 is a flowchart illustrating a signal processing process of the signal processing system of FIG.
3 is a configuration diagram of a signal processing system according to another embodiment of the present invention.
4 is a flowchart illustrating a signal processing process of the signal processing system of FIG.
5 shows a network structure to which an embodiment of the present invention is applied.
6 shows a channel structure to which an embodiment of the present invention is applied.
7 is a block diagram showing the configuration of DU according to the embodiment of the present invention.
8 is a diagram for explaining a radio resource allocation structure according to an embodiment of the present invention.
9 is a diagram for explaining a radio resource allocation structure according to another embodiment of the present invention.
10 is a block diagram showing a configuration of an RU according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

Also, the terms " part, "" module," and " module ", etc. in the specification mean a unit for processing at least one function or operation and may be implemented by hardware or software or a combination of hardware and software have.

In this specification, a terminal includes a mobile station (MS), a mobile terminal (MT), a subscriber station (SS), a portable subscriber station (PSS), a user equipment , An access terminal (UE), an access terminal (AT), and the like, and may include all or some functions of a terminal, a mobile terminal, a subscriber station, a mobile subscriber station, a user equipment,

In this specification, a base station (BS) includes an access point (AP), a radio access station (RAS), a node B, an evolved NodeB (eNodeB) A base station (BTS), a mobile multihop relay (MMR) -BS, or the like, and may perform all or a part of functions of an access point, a radio access station, a Node B, an eNodeB, a base transceiver station, .

Hereinafter, a digital signal processing apparatus, a wireless signal processing apparatus, and a signal processing system according to embodiments of the present invention will be described in detail with reference to the drawings.

1 is a block diagram of a signal processing system according to an embodiment of the present invention, and shows a structure of a standard network construction scheme.

At this time, an evolved universal terrestrial radio access network (eUTRAN) system supporting Long Term Evolution (LTE) technology is an embodiment.

1, the eNodeB 100 is a base station that wirelessly connects to a mobile terminal (not shown). The base station allocates a frequency to a mobile terminal (not shown) and performs radio bearer control, admission control, mobility control, scheduling , And all wireless related functions including security. And to the core system 200 of the operator A and the core system 300 of the operator B, respectively. At this time, the core system of the operator has been described as two embodiments, but it may be further included.

The eNodeB 100 also includes a plurality of radio signal processing units 110 and a digital signal processing unit 130, .

Here, the RU 110 is installed in a service area, i.e., a cell, as a part for processing a radio signal of the eNodeB 100. [ And a RF amplifier for converting a digital signal received from the DU 130 into a radio frequency (RF) signal according to a frequency band and transmitting and receiving the signal to and from the antenna.

The RU 110 processes one frequency band (Band) to be shared by one or more operators. For example, if the operator is an A company or a B company, an arbitrary cell has one RU 110 for processing a frequency band that can be mutually shared by the A company and the B company.

The DU 130 is a part for processing the digital signal of the eNodeB 100, and comprises a channel card for encrypting and decrypting the radio signal, and is operated as a DU concentrating center. And to the core system 200 of the operator A and the core system 300 of the operator B, respectively. Unlike the RU 110, the DU 130 is not installed in a service area, but is a server installed concentrically mainly in a communication office, and is a virtualized base station. The DU 130 transmits and receives signals to and from a plurality of n RUs 110, for example.

The DU 200 also receives radio signals from n RUs 110 and digitally processes them, and controls radio resource allocation for n RUs 110. The control channel is shared, and the data channel is allocated per operator according to PLMN (Public Land Mobile Network).

Existing eNodeB 100 includes processing units corresponding to each of these RU 110 and DU 130 in one physical system, and one physical system is installed in the service area. On the other hand, in the eNodeB 100 to which the embodiment of the present invention is applied, the RU 110 and the DU 130 are physically separated and only the RU 110 is installed in the service area.

On the other hand, the core system 200 of the operator A and the core system 300 of the operator B refer to different core systems.

The core system 200 of the operator A and the core system 300 of the operator B have the same configuration. The core system 200 of the operator A and the core system 300 of the operator B are respectively connected to an HSS 210 and a home subscriber server 210, an MME 220 and a Mobility Management Entity 320, (S-GW) 230 and 330, a P-GW (Packet Gateway) 240 and 340, a Policy and Charging Rules Function (PCRF) 250 and 350, and an IP Multimedia Subsystem 260, 360).

Here, the HSSs 210 and 310 perform subscriber information management in the All IP network.

The MMEs 220 and 320 are connected to the DU 130 through a wireless channel and are connected to a mobile terminal (not shown) through the DU 130. The MMEs 220 and 320 manage idle mode mobile terminals (not shown) and select the S-GWs 230 and 330 and the P-GWs 240 and 340. And performs functions related to roaming and authentication. And processes a bearer signal generated in a mobile terminal (not shown).

The S-GWs 230 and 330 serve as mobile anchors when a mobile terminal (not shown) moves between handover of the eNodeB 100 or between 3GPP radio networks.

The P-GWs 240 and 340 allocate an IP (Internet Protocol) address of a mobile terminal (not shown), perform packet data related functions of the core network, Role.

The PCRF (250, 350) is a policy decision function for variously applying differentiated QoS and charging policies according to IMS service flow. 7 There is a policy control function defined in the Policy & Charging Control (PCC) structure. The PCRFs 250 and 350 can accommodate both the policy decision function defined in 3GPP release 6 and the flow control function based on the billing control and guarantee differentiated QoS for each service and apply a different billing rate .

The IMSs 260 and 360 are systems for providing multimedia services on an IP basis.

The DU 130 is connected to the MMEs 220 and 320 of the core system 200 of the operator A and the core system 300 of the operator B, respectively. At this time, it can be connected to the MMEs 220 and 320 via the S1 interface.

2 is a flowchart illustrating a signal processing process of the signal processing system of FIG.

Referring to FIG. 2, the DU 130 makes an S1 setup request (Setup REQ) to the MME1 220 of the operator A (S101).

Next, the S1 setup response (Setup Resp) is received from the MME1 220 (S103). Here, the S1 setup response includes GID (: H'8001) and Code (H'01 Capa: 10).

In addition, the DU 130 makes an S1 setup request to the MME2 320 of the operator B (S105).

Next, the S1 setup response is received from the MME2 320 (S107). Here, the S1 setup response includes GID (: H'8001) and Code (H'02 Capa: 200).

At this time, if there are more operators, steps S101, S103, S105, and S107 are repeated.

Also, GID is a group ID, which is information on a cell for communication between different cells, Code is a cell ID, and includes CAPA indicating the capacity of the MME (220, 320).

Next, the RU 110 transmits an attach request message or an RRC connection request message received from the mobile terminal (not shown) to the DU 130 (S109). Here, an S-TMSI of a network to be connected is transmitted in an RRC connection request message, which is composed of MMEC (MME Code) and M-TMSI. At this time, the PLMN of the connected user is confirmed using the MMEC.

Next, the DU 130 checks the PLMN (Public Land Mobile Network) from the message received in step S109 (S111).

Next, the DU 130 confirms the operator according to the PLMN confirmed in step S111, allocates radio resources according to the operator (S113), and transmits the radio resource allocation information to the RU 110 (S115).

Next, the RU 110 processes the operator-to-operator frequency sharing according to the radio resource allocation information received in step S115 (S117).

Next, the DU 130 selects the corresponding MME of the operator based on the PLMN confirmed in step S111 (S119).

FIG. 3 is a block diagram of a signal processing system according to another embodiment of the present invention, illustrating a structure of a non-standard network construction scheme.

FIG. 3 also shows an eUTRAN system supporting LTE technology, as in FIG.

Referring to FIG. 3, the eNodeB 400 includes a plurality of radio units (RU1, ..., RUn) 110 and a DU (430) as in FIG.

1, the MME 500 and the S-GW 600 are not included in the core system 700 of the operator A and the core system 800 of the operator B, unlike FIG. The core system 700 of the operator A and the core system 800 of the operator B are connected to the HSSs 710 and 810, the P-GWs 730 and 830, the IMSs 750 and 850, and the PCRFs 770 and 870, respectively And the function is the same as in Fig.

The DU 430 is connected to the MME 500 and the MME 500 is connected to the S-GW 600 and the HSSs 710 and 810. The S-GW 600 is connected to the P-GWs 730 and 830.

The DU 430 is operable in conjunction with the S-GW 600 to check the amount of packets used by the S-GW 600 and to detect the amount of usage for each operator.

4 is a flowchart illustrating a signal processing process of the signal processing system of FIG.

Referring to FIG. 4, the DU 130 sends an S1 setup request (Setup REQ) to the MME 500 (S201).

Next, an S1 setup response (Setup Resp) is received from the MME 500 (S203). Here, the S1 setup response includes GID (: H'8001) and Code (H'01 Capa: 10).

Next, the RU 110 transmits an Attach Request message or an RRC Connection Request message received from the mobile terminal (not shown) to the DU 130 (S205).

Next, the DU 130 confirms the operator according to the PLMN checked (S207) from the message received in the step S205, and allocates radio resources according to the operator (S209).

Next, the DU 130 transmits the radio resource allocation information allocated in step S209 to the RU 110 (S211).

Next, the RU 110 processes the operator-to-operator frequency sharing according to the radio resource allocation information received in step S211 (S213).

Next, the DU 130 transmits the received message and the APN (Access Point Name) to the MME 500 in step S205 (S215).

Next, the MME 500 checks the connection address of the P-GW based on the APN (S217).

Next, the MME 500 transmits the connection address of the P-GW confirmed in step S217 and the message received in step S215 to the S-GW 600 (S219).

Next, the S-GW 600 selects and connects to the P-GW of the corresponding operator using the connection address of the P-GW received in step S219 (S221).

The steps S113, S115, S117, S209, S211, and S213 will be described later with reference to FIGS. 6 to 9.

5 shows a network structure to which an embodiment of the present invention is applied.

Referring to FIG. 5, two or more operators, for example, operator A using frequency 2 and operator B using frequency 1 construct networks in the outskirts area. In the urban area, the service is provided by integrating the frequency of each provider. This increases the peak throughput of a single user.

6 shows a channel structure to which an embodiment of the present invention is applied.

Referring to FIG. 6, the downlink channel structure transmits control channels (P-SCH, S-SCH, PBCH) of about 1.08 MHz in the middle of the channel bandwidth BW and other channels in the remaining bandwidth channels.

7 is a block diagram showing the configuration of DU according to the embodiment of the present invention.

Referring to FIG. 7, the DU 110 includes a radio resource allocation unit 131, a first communication unit 133, and a control unit 135.

Here, the radio resource assignment unit 131 identifies the operator by identifying the PLMN. And allocates different resource blocks among a plurality of resource blocks included in a predefined frequency band for each of at least one operator.

At this time, according to one embodiment, the radio resource assignment unit 131 divides a predefined frequency band into one or more frequency bands and allocates the divided frequency bands to one or more operators. And allocates a plurality of resource blocks included in each allocated frequency band to one or more operators.

In addition, according to another embodiment, the radio resource assignment unit 131 matches and stores frequency bandwidth ratio information for each of at least one provider, and allocates a plurality of resource blocks to at least one operator in proportion to the stored ratio information .

Here, the ratio information may include resource block number information allocated to each of at least one operator among all the resource blocks included in the predefined frequency band.

In addition, the ratio information may include ratio information of the resource blocks allocated during a specific time period.

In addition, the resource allocation ratio information may include relative ratio information between one or more operators.

In addition, the radio resource assignment unit 131 adjusts the radio resource allocation by reflecting the added operator when the operator is added.

The communication unit 133 transmits one or more operator-specific radio resource allocation information allocated or adjusted by the radio resource assignment unit 131 to the RU 110.

The control unit 135 confirms the PLMN and selects the MME based on the PLMN, as described with reference to FIG. 1 to FIG. Also, the APN is delivered to the MME. Here, the means for interfacing with the MME is omitted, but may be connected to the MME through a means other than the communication unit 133.

8 is a diagram for explaining a radio resource allocation structure according to an embodiment of the present invention.

Referring to FIG. 8, there are two operators A and B, and the entire frequency band consists of 100 resource blocks (RBs).

At this time, the operators A and B use the whole frequency band divided into two bands. That is, if the entire frequency band is 20 MHz, 1 to 10 MHz is assigned to operator A and 11 to 20 MHz to operator B. Therefore, when the PLMN indicates the operator A, the radio resource assignment unit 131 assigns the RBs belonging to the frequency band corresponding to 1 to 10 MHz to the operator A. In addition, when the PLMN indicates the operator B, the radio resource assignment unit 131 assigns RBs belonging to the frequency band corresponding to 11 to 20 MHz to the operator B.

9 is a diagram for explaining a radio resource allocation structure according to another embodiment of the present invention.

Referring to FIG. 9, there are two operators A and B, and the entire frequency band is composed of 100 RBs.

At this time, the ratio information of the frequency bandwidths of the operators A and B are matched in advance. Therefore, unlike in FIG. 7, the operators A and B are able to allocate all the RBs belonging to the entire frequency band, but the allocable number is limited in proportion to the previously matched ratio information. For example, if the ratio information of the frequency bandwidth allocated by the operators A and B is 2: 1, the radio resource assignment unit 131 assigns the ratio of the RBs of the operators A and B allocated for the specific time T to 2: 1 .

10 is a block diagram showing a configuration of an RU according to an embodiment of the present invention.

Referring to FIG. 10, the RU 110 includes a wireless antenna 1 111, a wireless antenna 2 113, a wireless resource allocation unit 115, a signal processing unit 117, and a communication unit 119.

The wireless antenna 1 (111) communicates with the first wireless terminal (150), which is a subscriber terminal of the operator A, by using the allocated RB.

The wireless antenna 2 113 is connected to the second wireless terminal 170, which is a subscriber terminal of the operator B, and communicates using the allocated RB.

The radio resource assignment unit 115 assigns different RBs to one or more operators among the plurality of RBs included in the predefined frequency band according to the radio resource allocation information allocated by the DU 110. [

At this time, the radio resource assignment unit 115 allocates RBs according to the embodiment of FIG. 7 or FIG.

The signal processing unit 117 converts a digital signal received from the DU 110 into a radio frequency (RF) signal according to a frequency band and transmits the converted signal to the wireless antenna 1 111 and the wireless antenna 2 113 . It also processes the radio frequency signal and delivers it to DU 110.

The communication unit 119 is connected to the DU 110 and receives radio resource allocation information from the DU 110 and transfers the received radio resource allocation information to the radio resource allocation unit 115.

The embodiments of the present invention described above are not implemented only by the apparatus and method, but may be implemented through a program for realizing the function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

Claims (17)

A digital signal processing device physically separated from a radio signal processing device installed in a service area for processing a radio signal and connected to at least one carrier core system to process a digital signal,
A radio resource allocation unit allocating resource blocks different from one another among a plurality of resource blocks included in a predefined frequency band for each of at least one provider; And
And a communication unit for transmitting the resource allocation information for each of the one or more carriers allocated by the radio resource allocation unit to the radio signal processor,
Wherein the radio resource allocation unit comprises:
Wherein the ratio information of the frequency bandwidth is stored for each of the at least one provider and stored in the at least one provider, and the plurality of resource blocks included in the predefined frequency band are allocated to the at least one provider in proportion to the ratio information. The method according to claim 1,
Wherein the radio resource allocation unit comprises:
Allocates the predefined frequency band to one or more operators, and allocates a plurality of resource blocks included in each allocated frequency band to the one or more operators. delete The method according to claim 1,
The ratio information includes:
And information on the number of resource blocks allocated to each of the one or more carriers among all resource blocks included in the predefined frequency band. The method according to claim 1,
The ratio information includes:
And ratio information of resource blocks allocated during a specific time period. The method according to claim 1,
The ratio information includes:
Wherein the ratio information includes relative ratio information between the at least one provider. The method according to claim 1,
Wherein the radio resource allocation unit comprises:
If a business operator is added, radio resource allocation is adjusted to reflect the added operator,
Wherein,
And transmits the resource allocation information adjusted by the radio resource allocation section to the radio signal processing apparatus. A wireless signal processing apparatus physically separated from a digital signal processing apparatus connected to at least one provider core system for processing a digital signal and installed in a service area to process a wireless signal,
A radio resource allocation unit allocating resource blocks different from one another among a plurality of resource blocks included in a predefined frequency band for each of at least one provider; And
And one or more wireless antennas communicating with wireless terminals of one or more carriers using the resource blocks allocated by the wireless resource allocator,
Wherein the radio resource allocation unit comprises:
Wherein the radio signal processing apparatus matches and stores ratio information of a frequency bandwidth for each of the at least one provider and allocates a plurality of resource blocks included in the predefined frequency band to the at least one provider in proportion to the ratio information. 9. The method of claim 8,
Further comprising a communication unit connected to the digital signal processing apparatus and receiving resource allocation information from the digital signal processing apparatus,
Wherein the radio resource allocation unit comprises:
And allocates the different resource blocks to one or more carriers according to the resource allocation information. 9. The method of claim 8,
Wherein the at least one wireless antenna comprises:
And communicates with a wireless terminal of one or more carriers using a resource block included in each frequency band allocated to each provider. 9. The method of claim 8,
Wherein the at least one wireless antenna comprises:
And communicates with a wireless terminal of one or more carriers using a resource block allocated according to ratio information of each of the plurality of resource blocks included in the predefined frequency band. A digital signal processor for allocating different resource blocks among a plurality of resource blocks included in a predefined frequency band for each of at least one provider and connected to a core system of each of at least one provider and generating resource allocation information; And
A digital signal processing unit which is physically separate from the digital signal processing unit and is installed in a service area to process a radio signal and transmits the resource blocks allocated by the resource allocation information received from the digital signal processing unit to a wireless terminal And a wireless signal processing device for communicating,
The digital signal processing apparatus comprising:
Allocating a plurality of resource blocks included in the predefined frequency band to the at least one provider in proportion to ratio information of a frequency band matched for each of the at least one provider,
The radio signal processing apparatus includes:
And communicates with a wireless terminal of at least one provider using a resource block allocated in proportion to the ratio information. 13. The method of claim 12,
The digital signal processing apparatus comprising:
Allocating the predefined frequency band to one or more operators, allocating a plurality of resource blocks included in each allocated frequency band to the one or more operators,
The radio signal processing apparatus includes:
And communicates with a wireless terminal of one or more carriers using a plurality of resource blocks included in each of the allocated frequency bands. delete 13. The method of claim 12,
The radio signal processing apparatus includes:
And a plurality of wireless signal processing devices respectively installed in different service areas. 13. The method of claim 12,
The digital signal processing apparatus comprising:
And extracts a vendor unique code included in an attach message or an ALM connection setup complete message received from the wireless signal processing device to select a mobility management device of the business entity. 13. The method of claim 12,
A mobility management apparatus connected to the at least one provider core system and integrally managing the mobility of the wireless terminals of the at least one provider; And
Further comprising a gateway device coupled to the mobility management device and the one or more enterprise core systems,
The digital signal processing apparatus comprising:
Receiving the access point name from the mobility management apparatus to obtain a connection address of the at least one provider core system and requesting the gateway apparatus to connect to the corresponding provider core system using the connection address.

Images