Field of the Invention The present disclosure relates to bearer management in a wireless communication network. In particular, the invention relates to transport of signalling messages on the interface between a relay node and another node in a mobile communication network. Background Wireless network technologies are widely deployed to provide various communication contents such as voice, video, packet data, messaging, broadcast, etc., which provide multiple-access systems capable of supporting multiple users by sharing the available system resources. In order to provide better qualities of service and wider communication ranges between wireless nodes, the concept of relay station has been introduced in network systems. The purpose of deploying relay station or Relay Node (RN) in network system is to extend the serving coverage of base station; hence, user equipment (UE) which is not within the communication coverage of base station can access the services provided by relay node as well via base station. Wireless network architecture as defined by 3GPP introduces wireless relay node (RN) entity to extend the coverage of base station (eNB). A long term evolution-advanced (LTE-A) system, as its name implies, is an evolution of the LTE system, considering relaying for cost-effective throughput enhancement and coverage extension. For example, a relay can be deployed at the cell edge where the eNB is unable to provide required radio quality/throughput for the UEs or at certain location where radio signals of the eNB cannot cover. The Relay Node (RN) forms an independent physical cell. From a user equipment (UE) perspective, the RN is seen as a usual base station. The RN is connected via a wireless link to the base station. The relay node architecture deployment foresees that a RN emulates a base station for the UE, which means that the UE would see the RN as a usual base station. From the network side, the RN is seen as a usual UE by the base station. The base station, to which the RN is connected, is called Donor-eNB (DeNB) and operates as a usual base station. The deployment of RN in the 3GPP network architecture is described in 3GPP Technical Specification 36.806; "Relay architectures for E-UTRA (LTE-Advanced)". In order for the user equipment to receive a service from the network, it needs to establish connectivity via base station, by initiating Non-Access Stratum (NAS) signalling messages with network nodes like Mobility Management Entity (MME) serving the UE. Consequential signalling messages are exchanged between network nodes to allocate bearer resources for UE and RN to service the UE request. The above bearer management procedure can be initiated by UE or the Evolved Packet Core (EPC in terms of 3GPP LTE) or simply the communication network. Similar procedures are followed for managing existing bearers. The managing functions include creating new entry, updating and deleting. Thus, whenever a UE bearer is created or modified, the RN bearer modify or create procedures may be initiated by the RN. This increases the exchange of messages separately for the UE and for the RN to modify/create a new bearer. Thus additional messages may be exchanged by the RN each time a bearer is created/modified for the UE, leading to delayed access service and as well as backhaul bandwidth is wasted or underutilized. Therefore, there is a need for a bearer management to optimize radio and backhaul resources by effectively setting-up the bearers. Summary of the invention The summary represents the simplified condensed version of the claimed subject matter and it is not an extensive disclosure of the claimed subject matter. The summary neither identifies key or critical elements nor delineates the scope of the claimed subject matter. The summary presents the simplified form of the claimed subject matter and acts as a prelude to the detailed description that is given below. The present invention and its embodiments are made to provide for a feasible solution for facilitating bearer management in a communication network optimizing exchange of signalling communication in managing bearers for UE and RN. An aspect of the invention provides for a method of managing bearer signalling in a communication network, by transporting "Union of Resource Request" (UR Request) signalling message from Evolved Packet Edge (EPE) entities to managing entities of UE via DeNB and receiving "Intersection of Admission Response" (lA Response) signalling message for the transported UR Request from at least one of the said managing entity of UE by DeNB, wherein the said management entity serves/manages all the entities in the EPE. EPE is a conglomeration of network nodes comprising of user equipment, relay nodes and all other network nodes that communicate over EPC via DeNB. Network nodes in the EPE may establish connectivity external to EPC like Intemet or PSTN (Public Switch Telephone Network). Another aspect relates to receiving "Intersection of Admission Response" (lA Response) signalling message for the transported UR Request from managing entities of UE by the DeNB, wherein at least one of the said managing entities are not serving/managing the same entities in the EPE. Another aspect relates to transmitting bearer request, either single or multiple bearers within a single NAS message from the user equipment (UE) coupled to a relay node (RN), or relay nodes, to a mobility management entity serving the user equipment (MME_UE) via DeNB. The bearer request is received at the relay node (RN) as a UE NAS Message which is added with the relay node identity RN_ID, (referred to as tagging and represented as RN_TAG) and fonwarded to MME_UE via DeNB by insertion of RN_TAG message at any one of the protocol layers preferably over any one of the NAS, S1-AP, SCTP protocol layers. The RN_TAG message is processed by the mobility management entity serving the user equipment (MME_UE). MME_UE grants utmost UE request and then a 'RR Request' message for relay nodes is generated by the Mobility Management Entity serving the user equipment (MME_UE) based on the RNJDs stored, to be sent to the mobility management entity serving the relay node (MME_RN). Upon receiving the 'RR Request' message, MME_RN processes the bearer request of RN and if MME_RN grants utmost RN bearer request, a 'RR Response Positive Ack' message, is generated and forwarded to MME_UE. In response MME_UE generates "lA Response Accept" message and fon/vards to DeNB. Another aspect relates to generating "lA Response Reject" message and fonwarding to DeNB, if the MME_RN does not grant RN bearer request. Another aspect relates to generating 'UE NAS message for bearer resource reject' if the IVIME_UE upon receiving the RN_TAG message from RN does not grant UE bearer request. All the above responses are available to DeNB. The DeNB receives at least one among the above responses from MME_UE. Another aspect relates to systems facilitating the above method of managing bearers each comprising of at least a receiver, for receiving the said messages, processors for executing the functions, transmitter for transmitting messages, a memory for storing information and retaining instructions for executing functions associated with the above methods. Another aspect relates to respective network nodes like RN, DeNB, MME_UE and MME_RN facilitating the above method of managing bearers each comprising of at least a receiver, for receiving the said messages, processors for executing the functions, transmitter for transmitting messages, a memory for storing information and retaining instructions for executing functions associated with the above methods. Other aspects, advantages, and salient features of the invention will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses exemplary embodiments of the invention. Description of the Drawings The features, advantages and other aspects of the embodiments of the present invention will be obvious to any person skilled in the art to appreciate the invention when read with the following description taken in conjunction with the accompanying drawings. Figure 1 illustrates a relay enhanced communication network as specified in 3GPP LTE network architecture, where the subject matter of the embodiments of the invention is deployed. Figure 2 is an illustrative representation of multiple base stations (DeNB), as specified in 3GPP network architecture, being served by one or more of MMEs and SGWs. Figure 3 is an illustration of existing bearer establishment procedure for user equipments (UE) and relay nodes (RN) as specified in 3GPP LTE (A) network architectures. Figure 4 shows the network nodes conglomeration between two network entities in accordance with the principles of the invention. Figure 5 represents 'UR Request' message signalling in the uplink from Evolved Packet Edge to Evolved Packet Core via DeNB in accordance with the embodiments of the invention. Figure 6 depicts the 'Intersection of Admission Responses' (lAR) that are available to DeNB in accordance with the embodiments of the invention. Figure 7 shows a detailed method of relay node identity tagging (RN_TAG) in any one of the control plane protocol layers in accordance with the embodiments of the invention. Figure 8 represents bearer establishment signalling loop in accordance with various aspects of the invention. Figure 9 depicts the function of bearer establishment signalling loop for an UE coupled with a Relay Node (RN) in accordance with the embodiments of the invention. Figure 10 depicts the function of bearer establishment signalling loop for an UE coupled to Relay Nodes, in accordance with the embodiments of the invention. Figure 11 is the first sequence flowchart of the functions performed by the relay node in accordance with the embodiments of the invention. Figure 12 is the second sequence flowchart of the functions performed by Donor eNB, in accordance with the embodiments of the invention Figure 13 is the third sequence flowchart of the functions performed by the mobility management entity serving the UE (MME_UE) in accordance with the embodiments of the invention. Figure 14 is the fourth sequence flowchart of the functions performed by the mobility management entity serving the RN (MME_RN) in accordance with the embodiments of the invention. Figure 15 is the fifth sequence flowchart of the functions performed by the mobility management entity serving the UE (MME_UE) in accordance with the embodiments of the invention. Figure 16 is the sixth sequence flowchart of the functions performed by Donor eNB, in accordance with the embodiments of the invention Figure 17 illustrates a system diagram of various components of devices within a relay node, in accordance with the embodiments of the invention. Figure 18 illustrates a system diagram of various components of devices within Donor eNB, in accordance with the embodiments of the invention. Figure 19 illustrates a system diagram of various components of devices within MME_UE, in accordance with the embodiments of the invention. Figure 20 illustrates a system diagram of various components of devices within the MME_RN, in accordance with the embodiments of the invention. The figures are not drawn to scale and are illustrated for simplicity and clarity to help understand the various embodiments of the present invention. Throughout the drawings it should be noted that like reference numbers are used to depict the same or similar elements, features and structures. Detailed Description The following descriptions with reference to the accompanying drawings are provided to assist in a comprehensive understanding of exemplary embodiments of the invention as defined by the claims and their equivalents. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the invention. Accordingly, it should be apparent to those skilled in the art that the following description of exemplary embodiments of the present invention are provided for illustration purpose only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents. In the figures certain embodiments are shown in block diagrams in order to facilitate describing those embodiments. The terms, component, module, system, and the like are intended to refer to an entity or entities within a communication network node comprising of; hardware, software, a combination of hardware and software. For eg., a component may be, but not limited to being, a process running on a processor, a processor, an integrated circuit, or a computer. Both an application running on a computing device and the computing device can be a component. A component may be localized on one computer and/or distributed between two or more computers. The components may communicate by way of local and/or remote processes. Those skilled in the art will understand that the principles of the present disclosure may be implemented in any suitably arranged systems. The terms used to describe various embodiments are exemplary. It should be understood that these are provided to merely aid the understanding of the description, and that their use and definitions in no way limit the scope of the invention. Any term specifically reciting some of the present invention's characteristic, parameter, or value need not be achieved exactly, but that deviations or variations, including tolerances, measurement error, measurement accuracy limitations and other factors known to those of skilled in the art, may occur in amounts that do not preclude the effect the present invention was intended to provide. The present invention and its embodiments are mainly described in relation to 3GPP specifications and standards (LTE-Advanced) for applicability of certain exemplary embodiments. The terminology used is therefore related thereto. Such terminology is used in the context of describing the embodiments of the invention and it does not limit the invention in any way. Any other network architecture or system deployment, etc., may also be utilized as long as it is compliant with the features described herein. In particular, embodiments of the present invention may be applicable in any relay-enhanced (cellular) system with a need for signalling optimization. Embodiments of the present invention may be applicable for/in any kind of modem and future communication network including any mobile/wireless communication networks/systems. Example embodiments to be described below are not intended to limit the present invention to any specific example, embodiment, environment, applications, or particular implementations described in these example embodiments. It should be appreciated that, in the following example embodiments and the attached drawings are illustrated for the ease of understanding, but not to limit the actual scale. The following paragraphs will describe various embodiments of the invention. For exemplary purposes only, most of the embodiments are outlined according to the LTE-Advanced mobile communication system with the solution to the problem discussed in the background. It should be noted that the invention may be advantageously used in connection with the communication system described above, but the invention is not limited to its use in this particular exemplary communication network. The explanations given below are intended to better understand specific exemplary embodiments described herein and should not be understood as limiting the invention to the specific implementations of processes and functions in a mobile communication network. The improvements/solutions proposed herein may be readily applied in architectures/systems having relevance to relay architectures. Some embodiments of the invention may also make use of standard and improved procedures of these architectures/systems. The techniques described herein may be used for various wireless communication networks such as CDMA networks, CDMA implementing radio technology such as UTRA, TDMA networks, TDMA implementing radio technology such as GSM, FDMA networks, OFDMA networks, OFDDA implementing radio technology such as Evolved URTA (E-UTRA), SC-FDMA networks. User equipment (UE) used in the following description denotes various terminologies used like an access terminal (AT), wireless communication device, terminal, wireless handset, computer or wireless module, wireless module for use with a computer, personal digital assistant (PDA), tablet computer or device. Figure 1 represents an overall architecture of a network with a relay node (RN). A relay node 10 has a donor base station (DeNB) 30 and a tenninal side called as user equipment (UE) 20. Towards UE 20 the RN 10 behaves as a conventional eNB using the access link 15 (Uu interface) and the UE 20 is not aware of whether it is communicating with a relay node 10 or a base station 30. Relay nodes are therefore transparent for the UE. Towards base stations relay nodes initially operate as a UE using the radio interface to connect to the base station. Once connection is established and the relay node is configured, the relay uses a subset of the UE functionality for communication on the backhaul link 25 (Un interface). In relay architecture as shown in the above figure, donor eNB 30 acts as a proxy between the core network 100 and the relay node 10. From the relay perspective, it appears as if RN 10 is directly connected to the core network 100 as the donor eNB appears as a mobility management entity (MME) 101 for the SI interface and a base station (eNB) for X2 interface towards the relay node 10. From the perspective of core network 100, the relay node 10 appears as it belongs to the donor eNB. Core network 100 and also other blocks (106, 107), show the relationship between them. The above diagram shows signalling interfaces. Interfaces like SI; S2 supports both user plane and control plane signalling, whereas interfaces like S6, S7 support only control plane signalling. The IMS (IP Multimedia Subsystem) 105 located on top of the blocks provide access to both private IP network 107 and PSTN (Public Switched Telephone Network) 106 via Media Gateway network entities. The HSS (Home Subscriber Server) 108 manages user subscription information and provides services to all Core Network (CN) 100 blocks of 3G and evolved 3G architecture. The MME 101 is in charge of all the control plane functions related to subscriber and session management. Its responsibility includes connection/release of bearers to a terminal, handling of IDLE to ACTIVE transitions, and handling of security keys. The functionality operating between the UE and the Core Network is referred to as Non-Access Stratum (NAS), whereas Access Stratum (AS) handles functionality operating between the terminal and the radio access network. It supports security procedures, terminal-to-network session handling, and Idle terminal location management. The MME 101 is linked through the S6 interface to the HSS and is linked through the SI interface to the donor eNB. The Serving GW 102 is the termination point of the packet data interface towards donor eNB and UE through RN (E-UTRAN 100a). When UEs move across eNB in E-UTRAN 100a, Serving GW 102 serves as a local mobility anchor, meaning that packets are routed through this point for intra E-UTRAN mobility and mobility with other 3GPP technologies like 2G/GSM and 3G/UMTS. The Packet Data Network Gateway (PDN GW) 103 is similar to the Serving GW 102. The PDN GW is the tennination point of the packet data interface towards Packet Data Network and also supports policy enforcement features as well as packet filtering (like deep packet inspection for virus signature detection) and evolved charging support (like per URL charging). Policy and Charging Rules Function (PCRF) 104 enforces policy features (which apply operator-defined rules for resource allocation and usage. The UEs are connected to the RN by means of an Uu interface 15 and the RN to the Donor eNB by means of Un interface 25. Multiple base stations (eNBs) are normally interconnected with each other by means of the X2-lnterface, and to the Core Network by means of the SI interface, more specifically to the MME (Mobility Management Entity) via the SI- MME, and to the Serving Gateway (S-GW) by means of the S1-U interface. The SI interface supports a many-to-many relation between MMEs/Serving Gateways and multiple base stations. When the network eg., MME 101 has no valid location or routing information for the UE 20, the UE 20 cannot be reached. This is more likely when the UE 20 is in a state of switched off, or out of coverage area. 3GPP defines this state as a de-registered state and this could also happen when the UE is in non-3GPP access. When the UE 20 is attached to the network eg., MME 101, it can receive Core Network 100 services. This state is defined by 3GPP as registered state. In this registered state the UE 20 can be in two different connection management states like RRCJDLE state and RRC_CONNECTED state. When no data is being transmitted and the radio resources are released, the UE has a valid IP configuration. In such idle state there is no Non-Access Stratum (NAS) signalling connection between the UE and the network, e.g., MME 101. Also during the idle state there is no S1 connection between the eNB and the Serving Gateway. In the RRC_CONNECTED state, there is an active connection between the UE 20 and donor eNB 30, which implies a communication context being stored within the donor eNB 30 for this UE 20. Both sides can exchange user data and or signalling messages over logical channels. From the wireless network perspective, protocol structure for the User and Control planes correspond to user data transmission and signalling transmission. Control plane corresponds to the information flows actually considered as signalling by E-UTRAN 100a and Core Network 100. This includes all the RRC (Radio Resource Control) E-UTRAN signalling (supporting functions such as Radio Bearer management, radio mobility, user paging) and NAS (Non Access Stratum) signalling. On the radio interface, the Control plane uses the Control plane protocol stack namely PDCP (Packet Data Convergence Protocol), RLC (Radio Link Control), MAC (Medium Access Control) and PHY (Physical) stack to transport both RRC and Core Network NAS signalling. The above protocol stack layers support the same functions for both the User and Control Planes. The NAS signalling stops at MME 101 level because the top-level protocols terminate in the MME. When a Non-Access Stratum (NAS) signalling connection needs to be established between the UE 20 and the MME 101 routed via relay node 10, the UE 20 and the MME 101 shall enter the connected state. The NAS protocol/signalling occurs between the UE 20 and the MME 101 via relay node 10, thus supporting mobility management functionality as well as the user plane bearer activation, modification and deactivation. It should be noted that donor eNB is in fact connected to one or more than one MME or Serving GW node. In the figure 2, MMEs 101 and Serving GWs 102 are seen connected to more than one donor eNB 30. These plurality of donor eNB form a pool area 203 such that a pool area can be served by one or several MME and/or Serving GW. A given MME or Serving GW node may serve one or several pool areas. The connectivity of the relay node and the UE communicating via relay node, is managed by the network eg., MME. The MME manages a pool referred to as 201, 202 or 203 as shown in figure 2. Based on initial NAS signalling, MMEs in the pool analyzes the request and determines which MME should manage the radio resources for the respective relay node or the UE communicating via relay node. This communication message essentially comprising of bearer request acknowledgement, indicates the uplink channel through which the UE is to communicate for establishing radio bearers. For the sake of simplicity MME 101a managing the UE 20 and the MME 101b managing the RN 10 is indicated as MME_UE and MME_RN respectively, hereinafter. Similarly the Serving GW 102 managing the UE 20 and the Serving GW 102 managing the RN 10 is indicated as SGW/PGW_UE and SGW/PGW_RN respectively, hereinafter. Figure 3 shows the signalling message for bearer initiation procedure existing in 3GPP LTE specification. UE 20 sends an initial NAS message or service request to the MME_UE 101a, which is routed through RN 10 and Donor eNB 30. When a NAS layer in the UE has to send an initial NAS message denoted as 'UE NAS Msg' in fig 3, the UE first initiates the establishment of the Radio Resource Control (RRC) connection over the Uu interface. The RRC procedures are elaborated in 3GPP specification TS 36.331 available at www.3gpp.org. In parallel to the establishment of the RRC connection over the Uu interface, the RN initiates the establishment of the RRC connection over the Un interface. The RRC connection establishment procedure over the Uu and Un interfaces are identical. The Non-initial NAS message is a ciphered message directed to MME (UE) 101a and the RN 10 is transparent. The MME_UE 101a understands the message and forwords it to the SGW/PGW_UE 102a for checking the UE subscription data (which is to be obtained from HSS 108, fig 1). Then the SGW/PGW_UE 102a authorizes MME_UE 101a to create a dedicated bearer and sends the message over S11 interface (Interface between S/PGW and I\/1ME). On receiving the response, MME_UE 101a sends bearer setup request to the UE 20 as an S1-AP message routed through RN 10. RN 10 understands this S1-AP message and initiates RRC configuration between UE 20 and RN 10. A bearer setup response is then sent by UE 20 to MME_UE 101a routed via RN 10 and Donor eNB 30 as an S1-AP message. On receiving the response from UE 20, MME_UE 101a establishes the bearers and sends the response to SGW/PGW_UE 102a. This process establishes radio bearers to enable data flow from the SGW/PGW_UE 102a to the UE 20. After completion of this procedure, the RN 10 may send a NAS message seeking bearer-resource request to MME_RN 101b through Donor eNB 30. MME_RN 101b understands the message and provisions bearer resource allocation to RN 10. Upon receiving bearer resource allocation, RN 10 bearer establishment is completed. Radio resources for the relay node 10 are allocated so as to serve the already established UE's bearer requirements. The above process of initiating bearer establishment can also be initiated by EPC/Core Network. This happens both when the UE 20 is in the RRCJDLE state and a message/data is to be transported to the UE 20 by the Core Network or when there is a change in existing bearer configuration to the UE 20 in the RRC_CONNECTED state. In this state, MME_UE 101a initiates bearer-setup or modify procedure for the UE 20 at any point of time based on UE subscription and QoS requirements. Thus in all the above instances of UE NAS Messages, whenever a UE 20 bearer is created or modified, the RN bearer, modify or create may be initiated subsequently by the RN 10. Thus additional messages are exchanged separately for the UE 20 and for the RN 10 to modify/create a new bearer. This either wastes or underutilizes the backhaul bandwidth. Further, there is delay in traffic flow. Figure 4 shows the network nodes conglomeration between two network entities in accordance with the principles of the invention. Network entity 625 is called as Evolved Packet Edge (EPE) comprising of plurality of network nodes like UE, RN and all other nodes that communicate with Evolved Packet Core Network entity 675 via DeNB 30. Network nodes in the EPE 625 may establish connectivity external to EPC like Internet 106 or PSTN (Public Switch Telephone Network) 107. EPC entity 675 comprises of network nodes like Mobility Management Entity (MME), Serving gate way/Packet gate way (S/PGW), Policy of Charging Rules Function[PCRF-actually a concatenation of PDF (Policy Decision Function) and CRF (Charging Rules Function) network nodes] etc., These nodes essentially manages the entities in the EPE. For e.g., a UE bearer resource request is processed and allowed only by the MME serving the UE. Depending on the complexity of the communication network, it so happens that, MMEs are segregated to perform management of plurality of UE and RN separately. In such cases, it is appropriate to indicate MMEs serving the UEs as MME_UE and MMEs serving the RNs as MME_RN. As part of bearer management signalling as envisaged, a communication from EPE 625 comprising of bearer resource request of both the UE and RN is transported via DeNB 30 to EPC as a single signalling message over uplink channel 651 hereinafter referred to as "Union of Resource Request" (UR Request) message. The response message comprising of bearer resource response from either one of the managing entity or managing entities of EPC 675 are transported as a single signalling message to DeNB 30 over the downlink channel 652 hereinafter referred to as "Intersection of Admission Response" (lA Response). This manages bearer setup signalling loop, with a single transportation of 'UR Request' signalling message and receiving one "lA Response" signalling message over uplink and downlink channels respectively. Figure 5 represents "UR Request" message signalling in the uplink from EPE 625 to EPC 675 via DeNB 30 in accordance with the embodiments of the invention. When the UE 20 is in the state of RRC_CONNECTED or RRCJDLE; a UE NAS signalling message requesting bearer resource of the fornn 'Create, Update, Detach, Modify' etc., hereinafter referred to as "CRUD" messages, are generated. It so happens that, depending on the complexity of the EPE communication network, multiple relay nodes may be wirelessly connected in a sequence so as to serve a distant UE. In such cases, a bearer request of a UE initiated by sending a UE NAS message to the MME in the EPC 675, has to be routed via all the relay nodes acting in sequence. Such an arrangement is shown towards the right of EPE 625. As soon as the UE NAS message generated by UE 20 is received at RN 1, RN1 adds its identity with the UE NAS message, denoted as 'UE NAS Msg+RNJDI' referred to as 'first tagged message' and routes the first tagged message to RN 2. Relay node identity or RNJD is a unique identifier that uniquely identifies the IVIIVIE serving the said RN. Relay node identity comprises of MME Group ID, MME code of MME_RN. RN 2 adds its identity with the received first tagged message denoted as 'UE NAS Msg+RN_ID1+RNJD2' and referred to as 'second tagged message' and routes the second tagged message to such 'n' number of RNs, such that it finally ends up with RNn. RNn adds its Identity with the received such 'multiple tagged messages' denoted as 'UE NAS Msg+RNJD1+RN_ID2+RN_IDn' hereinafter referred to as 'tagged message' and forwards the said tagged message to the managing entity of EPC 675 via DeNB 30. This tagged message is available at the EPC as 'UR Request' message. Depending on the mobility of the UE within EPE of a communication network, it so happens that, a single UE may be connected to different relay nodes at random. Such circumstances may arise based on the mobility of the UE and/or proximity of the UE with a RN exhibiting excellent signal strength. In such cases, a bearer request of a UE initiated by sending a UE NAS message to the MME in the EPC 675 has to be routed through the respective RN which is coupled to the UE. Such an arrangement is shown towards the left of EPE 625. As soon as the UE NAS message generated by UE 20 is received at RN1, RN1 adds its identity with the UE NAS message, denoted as 'UE NAS Msg+RNJD1' which becomes a tagged message. This tagged message represented as 'RN_TAG' is forwarded by the RN1 to the managing entity of EPC 675 via DeNB 30. This RN_TAG message is also available at the EPC as "UR Request" message. Figure 6 depicts the "Intersection of Admission Response" (lA Response) that is available to donor eNB 30. "Intersection of Admission Response" comprises of bearer resource allocation message pertaining to the respective EPE entities. For e.g., if MME_UE grants bearer resource (x) to the UE (Y), MME_UE generates 'RR Request' message seeking bearer allocation for the relay nodes (P,Q,R) and forwards to MME_RN. The 'RR Request' message may be in the form of Yx(P,Q,R). MME_RN may grant the same resources ('x') to the respective relay nodes (P,Q,R). In such cases "RR Response" message generated by MME_RN may be x(P,Q,R). When this 'RR Response' message is received by MME_UE, IVII\/IE_UE may generate an "Intersection of Admission Response" in the form of (Y, P, Q, R)(x,x,x,x). This response is understood by the DeNB as a message comprising of allocated bearer resources corresponding to the value of 'x' to UE, and as a message comprising of allocated bearer resources corresponding to the value of 'x' for the relay nodes 'P', 'Q' and 'R' respectively. In the above given example given, in case MME_RN grants bearer resources for each relay node in the sequence P,Q,R, corresponding to the value less than the granted value of UE i.e., 'x-a', then the 'RR Response' message that is generated by MME_RN would be '(P,Q,R)(b,b,b)', (wherein x-a=b). When this 'RR Response' message is received by MME_UE, MME_UE may generate an "Intersection of Admission Response" in the form of '(Y, P,Q,R)(b,b,b,b)'. This "Intersection of Admission Response" is understood by the DeNB as a message comprising of allocated bearer resources corresponding to the value of 'b' to UE, and as a message comprising of allocated bearer resources corresponding to the value of 'b' for the respective relay nodes 'P', 'Q' and 'R'. Further in the given example above, in case MME_RN grants bearer resources for the relay node 'P' corresponding to the value less than the granted value of UE i.e., 'x-d'; and grants bearer resources for the relay node 'Q' corresponding to the value less than the granted value of RN 'P' i.e., 'x-e'; and grants bearer resources for the relay node 'R' corresponding to the value less than the granted value of RN 'Q' i.e., 'x-f wherein (f