KR100610804B1 - Method for optimizing resources in radio system, and radio system - Google Patents

Abstract

The present invention relates to a wireless system and a resource optimization method in the wireless system. The method includes: transmitting 402 transmission network information about traffic in a transmission network of the wireless system to a wireless network of the wireless system, wherein the transmission network is configured to transmit network elements of the wireless network and the wireless network. Connect to a core network of the wireless system; The serving network element of the wireless network comprises routing 404 a telecommunication connection of user equipment through the serving network element to a core network. The method further includes adjusting 406 a telecommunications connection of a user equipment between the serving network element and the user equipment based on the transport network information.

Radio resource management, wireless system, transmission network information,

Description

Resource optimization method and wireless system in wireless system {METHOD FOR OPTIMIZING RESOURCES IN RADIO SYSTEM, AND RADIO SYSTEM}

The present invention relates to a resource optimization method and a wireless system in a wireless system.

The requirements and requirements for the capacity and resources of the mobile communication system are rapidly increasing with the need for a large amount of data transmission through the wireless communication system and the increase in the number of users and the density of the mobile equipment. With the advancing new technologies, future wireless communication networks have been proposed to use various forms of radio access technology instead of just one form of technology. Technologies such as WCDMA (Wideband Code Division Multiple Access) and GSM / EDGE (Enhanced Data Rate for Wide Area Systems / Wide Development for Mobile Communications) are already in use worldwide and are under continuous development. In the near future, wireless communication networks and wireless user equipment will continue to support Internet Protocol (IP) based technologies. With the use of other technologies, the network as a whole can take advantage of the coverage and capacity characteristics of other technologies. Managing quality of service (QoS) in the network without wasting resources is an important requirement. However, all of these create new demands to optimize network resources and their use.

A communication network using packet switched transmission may be implemented, for example, as an IP based packet transmission network. The IP packet contains information about the destination along with the origin of the packet, which allows the packet to be easily routed. The destination address of an IP packet causes a specific routing decision at the router, which causes the packet to be sent to that destination. In a circuit-switched network, content does not know its destination, and the network prepares for a connection, which secures network capacity while the connection exists. Routing not only performs file transfers well, but also performs well for real-time traffic such as voice and video telephony as long as sufficient network capacity is available and quality of service (QoS) can be protected.

Problems arise when a communication network is congested (eg, when a portion of the communication network is overloaded) or when congestion is expected. Congestion may occur, for example, when a router or other network elements receive its data faster than the router can transmit. If the traffic is allowed to flow freely in the transmission portion (eg the IP transmission portion of the mobile network) as on the Internet, the thin transmission portion near the base station will be congested. Congestion will increase because of link failures that reduce transmission capacity. The use of soft handover to secure transmission capacity can make the congestion situation worse.

In the past, it has been proposed that data packets be dropped or withheld when the destination path is congested. Packets waiting in the buffer in the communication system are dropped to make room for the arrival packet. New packets can be prevented from entering the congested portion of the communication system until free space is created for new data. However, these techniques degrade the quality of service and cause problems of undesirable data drop or delay and deviation of delay, especially in real-time telecommunication services.

In terms of coverage, it would be necessary to establish a radio capacity larger than the transmission capacity of the links near the base station. However, not from a transmission point of view, but from a radio point of view, the method will increase the likelihood of eventually becoming a congestion situation, for example if it is reasonable to handover from one cell to another. In particular, soft handover load is a problem in WCDMA based networks. In the current system, radio resource management (RRM) of the network responsible for handover control is performed independently and substantially accommodates all changes in soft handover access (ie, SHO legs cause large variations in soft handover load). do. All of this will create a situation where it is necessary to establish a larger transmission capacity that can handle the traffic coming from the wireless network. This is a problem because establishing new transmission resources is expensive.

The present invention seeks to provide an improved method of resource optimization in a wireless system.

In accordance with an aspect of the present invention, there is provided a resource optimization method in a wireless system, the method comprising: transmitting transport network information about traffic in a transport network of a wireless system to a wireless network of a wireless system, wherein the transport network is wireless Connect the network elements of the network and the wireless network to the core network of the wireless system; The serving network element of the wireless network routing the telecommunication connection of the user equipment through the serving network element to the core network; And adjusting the telecommunication connection of the user equipment between the serving network element and the user equipment based on the transmission network information.

In an aspect of the invention, there is provided a resource optimization method in a wireless system, the method comprising: transmitting transport network information about traffic in a transport network of a wireless system to a wireless network of a wireless system, wherein the transport network is Connect the network elements of the wireless network and the wireless network to the core network of the wireless system; And coordinating 504 soft handover of the telecommunications connection between the base station and the user equipment of the wireless network based on the transmission network information.

In an aspect of the invention, a wireless system is provided, comprising a core network; A wireless network coupled to the core network, wherein the wireless network includes network elements to provide a telecommunications connection to user equipment, one of the network elements configured to act as a serving network element, the serving network element Routes a telecommunications connection of user equipment through the serving network element to a core network; A transmission network connecting the network elements of the wireless network and the wireless network to the core network; And receiving means for receiving transport network information relating to traffic of the transport network, and wherein the wireless system receives means for coordinating a user equipment telecommunication connection between a serving network element and the user equipment based on the transport network information. It further comprises an adjustment means connected to.

In an aspect of the invention, a wireless system is provided, comprising a core network; A wireless network coupled to the core network; The wireless network includes network elements to provide a telecommunications connection to user equipment; A transport network connecting the network elements of the wireless network and the wireless network to the core network; And receiving means for receiving transport network information relating to traffic of the transport network, wherein the wireless system coordinates soft handover of a telecommunications connection between a base station and user equipment of the wireless network based on the transport network information. And adjusting means connected to the receiving means to make it possible.
In one aspect, the invention provides a core network comprising: a core network; A wireless network coupled to the core network, wherein the wireless network comprises network elements to provide a telecommunications connection to a user device and one of the network elements is configured to act as a serving network element, the serving network element being the user Route a device telecommunications connection through the serving network element to the core network; A transmission network connecting the network elements of the wireless network and the wireless network to the core network; And receiving means for receiving transport network information relating to traffic of the transport network, wherein the base station is a user between the serving network element and the user device based on the transport network information. Adjusting means connected to said receiving means for adjusting a telecommunication connection of the apparatus.
In another aspect, the present invention is directed to a core network; A wireless network coupled to the core network, wherein the wireless network includes network elements to provide a telecommunications connection to a user device; A transmission network connecting the network elements of the wireless network and the wireless network to the core network; And receiving means for receiving transmission network information about the traffic of the transmission network, wherein the base station is a telecommunication connection between the base station and the user equipment based on the transmission network information. Adjusting means connected to said receiving means for adjusting a soft handover of the apparatus.
In another aspect, the present invention is directed to a core network; A wireless network coupled to the core network, wherein the wireless network comprises network elements to provide a telecommunications connection to a user device and one of the network elements is configured to act as a serving network element, the serving network element Route a user device telecommunications connection through the serving network element to the core network; A transmission network connecting the network elements of the wireless network and the wireless network to the core network; And receiving means for receiving transport network information relating to traffic of the transport network, wherein the wireless network controller is configured to serve the serving network element and the user device based on the transport network information. Adjusting means connected to said receiving means to adjust the telecommunication connection of the user device therebetween.
In one aspect, the invention provides a core network comprising: a core network; A wireless network coupled to the core network, wherein the wireless network includes network elements to provide a telecommunications connection to a user device; A transmission network connecting the network elements of the wireless network and the wireless network to the core network; And receiving means for receiving transmission network information about the transmission network traffic, wherein the wireless network controller is configured to establish an electrical connection between a base station and the user device based on the transmission network information. Adjusting means connected to said receiving means for adjusting soft handover of a communication connection.

Another embodiment of the invention is disclosed in the dependent claims.

The present invention provides several advantages. The present invention allows the wireless system to consider the transmission load situation during resource optimization in the wireless system. An advantage of the present invention is that transmission resources do not need to be sized in the worst case. Therefore, the cost savings in establishing network resources can be achieved by reducing the need for new network resources.

An advantage of the present invention is that the additional load caused by soft handover can be adjusted and minimized when a runaway situation or runaway is anticipated (eg, busy times).

Another advantage is that the network can better adapt to changes in the load without drastic measures such as data drops that degrade the quality of service. In addition, when data does not need to be dropped on the most congested link, the dropped data does not load other links, unnecessarily use transmission resources, and do not reduce the quality of other traffic.

Another advantage is that network resources can be used more efficiently as the access transport network does not act as a limiting factor. Therefore, the size of the access transport network does not have to be oversized.

Another advantage of the present invention is that it can reduce vibration in traffic mixing. For example, a more uniform type of traffic mixing is advantageous because the parameters in the router are adjusted to a particular type of traffic mixing.

In the following, the present invention will be described in more detail with reference to preferred embodiments and the accompanying drawings, which are as follows.

1 illustrates an example of a wireless system;

2 shows an example of a generic protocol model for a radio access system;

3 shows another example of a wireless system;

4 is a flow chart illustrating a method of managing radio resources in a wireless system;

5 is a flow chart illustrating another method of managing radio resources in a wireless system;

6 shows an example of a transmission load recorded in a wireless network;

7 shows an example of using a resource optimization method; And

8 illustrates an example of soft handover load movement in a wireless cell.

1, a wireless system is shown as an example of a system to which an embodiment of the present invention may be applied. In FIG. 1, an embodiment is shown in a simplified wireless system and includes the main parts of the wireless system: core network (CN) 100, radio access networks 120, 130, 160 and user equipment (UE) 170.

 Figure 1 illustrates the general structure of an evolving 3G radio system using interoperation between different technologies and different generations of radio access networks, where second, 2.5 and third generation network elements coexist. In the figure, the second generation wireless system is represented as GSM (wide area system for mobile communication), and the second generation wireless system based on the GSM based wireless system uses EDGE (Enhanced Data Rate for Wide Area Development) technology to increase the data rate. And can also be used to perform packet transmission in GPRS (Wideband Packet Radio System). The third generation wireless system appears to be a wireless system known under the names of at least IMT-2000 (International Mobile Telecommunications 2000) and UMTS (Universal Mobile Telecommunications System).

The core network 100 of the wireless system is connected to external networks 180 and 182. The external networks 180, 181 are represented by a public land mobile communication network (PLMN) 180 or a general switched telephone network (PSTN) 180, and the Internet 182.

The base station subsystem (BSS) 160 based on GSM consists of a base station controller (BSC) 166 and a transmit / receive base station (BTS) 162, 164. The base station controller 166 controls the transmission and reception base stations 162 and 164. The interface 106 between the core network 100 and the BSS 160 is called an A interface. The interface between the BSC 166 and the BTSs 162 and 164 is called an A-bis interface. In principle, the devices implementing the radio paths and their functions should be located in the transmit and receive base stations 162, 164 and the management device in the base station controller 166. The implementation deviates essentially from this principle. As is known to those skilled in the art, a wireless system may include several base station subsystems 160 that are not shown in FIG. 1 for clarity.

UMTS Radio Access Network (UTRAN) 130 is comprised of Radio Network Subsystem (RNS) 140,150. Each Radio Network Subsystem (RNS) 140,150 is comprised of a Radio Network Controller (RNC) 146,156 and Node Bs 142,144,152,154. Node B is a rather shortened concept, often replaced by a 'base station'. The interface between the other radio network subsystems (RNS) 140,150, more specifically the radio network controller (RNC) 146,156, is called Iur. In UMTS, the interface between core network 100 and UTRAN 130 is called Iu interface 108. The interface between the RNC 146 and the Node Bs 142, 144 is called an Iub interface. In functional terms, the radio network controller 146 roughly corresponds to the base station controller 166 of the GSM system and the Node Bs 142, 144 correspond to the base stations 162, 164 of the GSM system. A solution is also possible when the same device functions as both a base station and a Node B (ie, the device can simultaneously perform TDMA (Time Division Multiple Access) and WCDMA air interface).

The wireless system will also use an IP-technology based radio access network, namely IP RAN (Internet Protocol Radio Access Network) 120. 1 shows an IP RAN 120 used as an example of a radio access network (RAN) to which this embodiment may be applied. As the IP-technology based radio access network and its structure continues to evolve, the IP RAN 120 of FIG. 1 shows an exemplary structure that describes some of the main functions of such an IP-technology based RAN. The implementations will vary. The IP RAN 120 shown in FIG. 1 is a radio access network platform based on IP-technology, and more general radio network access technologies and networks (ie, UTRAN (UMTS radio access network), GSM (wide area for mobile communication) It also enables interoperability with BSS (Base Station Subsystem) or GERAN (GSM EDGE Radio Access Network) used in the system. The IP RAN is connected to the UTRAN 130 via an interface 112, to the BSS 160 via the interface 114, and to the core network 100 via the interface 110.

IP RAN 120 may be briefly described as the following entity groups shown in FIG. 1: IP such as IP Base Station (IP BTS) 126, 128, and Radio Access Network Gateway (RAN Gateway, RNGW) 121. RAN gateway 122 and circuit switched gateway (CS gateway, CSGW) 123 for circuit switched traffic. IP RAN gateway 122 will generally include other elements such as a RAN access server that controls access to the network. IP RAN 120 may also include other elements such as servers and routers not shown in FIG. 1.

In IP RAN 120, most of the functions of centralized controllers RNC146 and BSC166 are directed to move to IP base station 126. In particular, all wireless protocols are allowed to move to IP base station 126. Outer entities of IP base station 126 are required, for example, to perform configuration and radio resource (RR) functions, or to interact with common radio access networks or base station subsystems or gateways to the core network 100. . But in more advanced architectures, RNC or BSC will still be used.

1 shows the coverage area (ie, cell) of a base station of other radio access networks. Cells 143, 145, 153 and 155 represent the coverage areas of Node Bs 142, 144, 152 and 154, and cells 163 and 165 represent the coverage areas of base stations 162 and 164. One Node B 142, 144, 152, 154 or the base station 162, 164 will be responsible for one cell as shown in Figure 1, or in the case of the base stations will be responsible for several cells that may be a divided cell. The IP base station will also be responsible for several cells. In the figure, the coverage area of IP base station (IP BTS) 126 is represented by cells 124 and 125, and the coverage of IP BTS 128 is represented by cells 127 and 129.

The user equipment 170 shown in FIG. 1 is preferably applicable to both 2G and 3G systems and includes at least one transceiver to establish a wireless connection to the radio access network 120. In general, user equipment 170 is a mobile station and further includes an antenna, a user interface, and a battery. Today, various kinds of user equipment 170 are available, such as equipment installed in automobiles or portable equipment. User equipment 170 may also have characteristics similar to those of a personal computer or a portable computer. User equipment 170 is connected with a wireless system through a base station of a radio access network, such as IP RAN 120, to allow a user of user equipment 170 to access the core network of the wireless system using a telecommunications connection. The telecommunication connection includes a wireless connection with a base and a connection between the base station and the core network.

2, a general protocol model for a radio access network is described using UTRAN as an example. Protocol models for other radio access networks such as IP RAN may be similarly described. As shown in FIG. 2, UTRAN internal functions and protocols may be classified into two horizontal layers: a radio network layer (RNL) 200, and a transport network layer 210. In the vertical direction, the protocol model includes three planes, a (wireless network) control plane 202, a (wireless network) user plane 212, and a transmission network control plane 208. The control plane 202 and the user plane 212 of the wireless network layer 200 are connected through a transport network layer using the transport network user plane 220. 2 shows application protocols 204 and data streams 214 at the wireless network layer 200, and signaling bearers 206, data bearer at the transport network user plane 220 of the transport network layer 210. 216 and physical layer 205 are shown. The signaling bearers 226 and the access link control application protocol (ALCAP) 224 in the transport network control plane 208 of the transport network layer 210 are also shown in FIG. 2. The control plane 202 transmits signaling information, and the user plane 212 transmits all information transmitted and received by the user. The radio network layer 200 includes all functions and protocols or cellular specific protocols related to radio (ie, RAN). The transport network layer 210 represents a standard transport technology (e.g., IP or ATM (asynchronous transmission mode) in UTRAN or IP in IPRAN) selected for use in the RAN. In the transport network layer 210, the signaling bearer is always established by the operation and management (O & M) action. The signaling protocol for ALCAP 224 may be in the same or different form as the signaling protocol for application protocol 204. If the signaling bearer is appropriate, the application protocol 204 at the wireless network layer 200 will request the data bearers 216 to be established by the ALCAP 224, which will bear all necessary information regarding user plane technology. Contains information. In the case where there is no ALCAP 224 so that signaling bearer 226 and transport network control plane 208 are not needed, the previously configured data bearers may also be used similarly to the Iu interface on the packet switched side.

Each layer of the protocol model may be shown as logical entities. One physical network element will contain one or more logical entities for each layer. More information about wireless telecommunication systems can be found in the literature and standards in the art.

Wireless systems (e.g., systems that use UTRAN or IP RAN as their radio access system) generally include two basic logic parts for handling user plane traffic: the radio related part and the transmission related part. The radio related portion may be for example radio resource management (RRM); Air interface; Iub interface; And radio related protocols such as RRC (Radio Resource Control), RLC (Radio Link Control) and MAC (Media Access Control). RRM includes algorithms such as handover control, power control, admission control (AC) and packet scheduling and code management. The transmission related part includes the selected transmission technique and its control function. The transmission technology selected is, for example, IP based on the IP RAN and IP or ATM based on the UTRAN (asynchronous transmission mode).

Since radio resources are expensive, radio-related parts of radio access networks seek to optimize their utilization. There are many ways available to control the function of all radio related controls. For example, an entity called Common Resource Management Server (CRMS) can be used to manage radio resource control. In this application the term 'radio manager' (RM) is used to control the functions of all radio-related controls.

The transmission-related portion of the radio access network seeks to optimize transmission resource utilization and control their use. For example, a method called differential service (DiffServ) can be used to ensure a significant level of quality of service (QoS) for other types of traffic, such as real-time or non-real-time traffic in an IP network. When using a discrimination service, data packets are presented in terms of importance and delay sensitivity to information about the content of the packet. In this application, the term 'transmission manager' (TM) is used to control all transmission related control functions. The TM also has information about the transport network load and preferably also contains information about the topology of the transport network.

The wireless communication related parts and the transmission related parts of a wireless system are generally very independent and make their decisions independently. However, these decisions affect other parts and their functions. For example, the radio manager RM makes decisions regarding the use of soft handover SHO in a telecommunications connection between the user equipment and the base station. However, these decisions will greatly increase the load on the transport network.

Handover function is one of the most important ways to perform user mobility in wireless network. Maintaining a traffic connection with the moving user equipment is possible by using handover, where an important concept is to establish a new connection with the target cell as the user equipment moves from the coverage area of one cell to another and to the existing cell. Is to disconnect from it.

There are several reasons for enabling handover. The basic reason for handover is that a wireless connection can no longer meet criteria sets such as signal quality, user mobility or traffic distribution. Signal quality handover occurs when the quality of a wireless signal deteriorates below a defined parameter. This deterioration is detected by signal measurements delivered by user equipment or base stations.

Traffic allocation handover occurs when a cell's traffic capacity reaches or approaches its maximum. In such a situation, user equipment near the edge of a cell with a large load is moved to a cell with a smaller load.

Handover (HO) is classified into hard handover (HHO), soft handover (SHO) and softer handover. In hard handover, the existing connection is released before making a new connection. In inter-frequency hard handover, the carrier frequency of the new radio access connection is different from the existing carrier frequency of the user equipment, and in intra-frequency handover is the same as the existing carrier frequency. If different carriers are assigned to the wireless network cell (eg, between the macro cell and the micro cell using different carriers in the same coverage area), inter-frequency handover may be used. In addition, inter-frequency handovers will occur between the other two types of radio access networks (e.g., between UTRAN and GSM or IP RAN and GSM). It may also be called inter-system handover or inter-radio access technology handover and these are inter-frequency handovers. Intersystem handover is furthermore only possible if fully supported by the user equipment.

In soft handover, the user equipment establishes a new connection to the network before the existing connection is released. The UE collects survey information in an active set, which is a list of base stations, more particularly radio cells, through which the UE has simultaneous connections to the RAN (eg UTRAN or IP RAN). The active set is a list of cells that meet the criteria set for handover. For example, in a WCDMA system, most handovers are in-frequency soft handovers, where neighboring base stations included in the handover transmit using the same frequency. Soft handover is performed between two radio cells belonging to different base stations. However, in UTRAN, for example, the cells do not necessarily belong to the same RNC, and the RNC involved in soft handover is responsible for coordinating soft handover execution over the Iur interface. In circuit switched calls, the user equipment performs soft handover for almost all the time if the cells in the wireless network are small. Simultaneous connections between the UE and the network are called soft handover legs. A soft handover leg is a connection that includes a wireless connection between a UE and a base station and a possible transport connection between the serving network element that routes the UE's connection to the core network through the base station and the serving network element.

There are also several variations of soft handovers (eg softer and soft-softer handover). In softer handover, new signals are added or removed from the active set, or replaced by powerful signals from other sectors of the same base station. The term 'soft-softer handover' is often used when soft and softer handovers occur simultaneously.

The basic handover process includes three main states, commonly referred to as survey state, decision state, and execution state. The network manages all handover types. For this purpose the network makes a survey on the uplink connection and receives the UE survey results for the downlink connection. The user equipment always surveys the strength of the signal of the neighbor cell for handover purposes and reports the result to the network, radio resource control (RRC) (eg located at the RNC in the UTRAN) during the connection. Surveyed cells can be divided into three different cell sets: active, monitor, and detection sets. Each set performs a survey according to their respective needs in the cell.

UE surveying may include intra-frequency surveys, such as surveys of downlink physical channel strength for signals having the same frequency, traffic survey surveys such as surveys of uplink traffic volume, quality parameters (e.g., downlink transport block error rate). Quality surveys such as surveys and internal surveys such as surveys of user equipment transmit power and user equipment received signal levels. The UE survey event will be triggered based on criteria such as a change in the best cell, a change in the signal-to-interference ratio (SIR), a periodic reporting or trigger time, or changes in the first common pilot channel (CPICH) signal level. The UE collects survey information in the active set. When the signal strength of the BTS transmission exceeds the additional threshold at the UE, the BTS is added to the active set, and the UE starts the SHO if it has not already become a SHO. The UE does not add or remove base stations independently from the active set, and the network requires modification to the active set through a signaling mechanism.

The measurement reported by the UE and the BTS and the reference set by the handover algorithm form the basis of the handover decision process. The handover algorithm is not standardized, and more dependent implementation types can be used freely. General principles of the handover algorithm may be described using, as an example, the decision making criteria of the handover algorithm based on the pilot signal strength reported by the user equipment. In an exemplary handover algorithm, the following terms and relative parameters are used: active set, upper threshold, lower threshold and handover limit. In general, these parameters are numerical values relative to, for example, signals of other base stations. The upper threshold is the level when the sum of the signal strengths of the cells in the active set of connections is at the maximum allowable level that satisfies the required QoS. Thus, the lower threshold is the level when the sum of the signal strengths of the cells in the active set of connections is at the minimum allowable level for the required QoS. That is, the signal strength of the connection must not fall below the lower threshold. In this example, the term 'handover limit' is an already defined parameter set at a point when the signal strength of an adjacent cell begins to exceed the strength of the current cell by a certain amount and / or for a period of time.

In the example, it is assumed that UE camping in cell A is moving toward neighboring cell B, and pilot signal A to where the UE has a current connection deteriorates as the UE moves and approaches a lower threshold. . This results in handover triggering during the following three states: The strength of signal A reaches a lower threshold. Based on the UE survey, the wireless network recognizes that an adjacent signal B with an appropriate strength to improve the quality of the connection is already available. The wireless network adds signal B to the active set, after which the UE has two simultaneous connections to the radio access network and can benefit from the sum of the signals A and B. That is, for example, the lower threshold may be referred to as an add threshold. As the UE moves, the quality of signal B begins to be better than the quality of signal A and the wireless network starts handover margin calculation. Eventually the strength of signal B reaches or exceeds the defined lower threshold (i.e. the strength of signal B is adapted to meet the required QoS of the connection). On the other hand, the sum of the strengths of the summed signals passes the upper threshold and begins to cause further interference in the system. As a result of this, the wireless network deletes signal A from the active set. That is, in the example, the upper threshold may be referred to as a drop threshold. The active set generally ranges from 1 to 3 signals, but its size may vary. In this example, the size of the active set varies between 1 and 2.

In general, the drop threshold parameter set by the network is always below the additional threshold and prevents early removal of the radio cell from the active set. The exact value of the drop parameter is a system performance parameter and can be set dynamically.

Since the direction in which the UE moves changes randomly, the UE will move towards the existing cell (cell A in the example) immediately after the first handover. This causes a so-called ping-pong effect in which the same cell is repeatedly added and removed from the active set. This is detrimental to system capacity and overall performance. Undesired handovers that cause additional signaling load on the radio access network can be avoided by using handover limits or hysteresis parameters. This effect can also be avoided with the use of a timer. The drop timer is started when the signal strength value falls below the set threshold. If the signal strength value of the base station stays below the set threshold by the time the timer expires, the base station is eventually removed from the active set. The timer must be long enough to prevent the ping-pong effect.

The radio access network uses both add and drop thresholds to determine when an active set update is needed. Thresholds are applied to the UE survey, and the UE must use the current thresholds to trigger the transmission of the survey report to the wireless access network. When the monitored cell exceeds the RAN-regulated addition threshold, a survey report containing the latest results is sent to the network. Depending on the control algorithm, the network will then send an active set update message to the UE. The control algorithm also includes other parameters and considerations in addition to additional thresholds. For example, if a cell is very overloaded, new connections are not allowed in that cell.

Cells identified as potential candidates for handover but not yet added to the active set are included in the monitor set. The RAN informs these cells of the proximity cell list to the UE and the UE should monitor these cells according to the given rules. If the cells in the monitor set exceed the additional threshold, the survey report will be triggered. The detection set includes all other cells found at the UE during monitoring that are not included in the neighbor cell list.

If the UE moves from one cell to another, the RRC layer is responsible for maintaining the connection between the UE and the network. Handover decisions are made at the RAN RRC, which are based in particular on UE measurements. SHOs are managed with an active set update message sent by the network. That is, the UE cannot update the active set on its own and must follow this message. In SHO, a UE always consumes more network resources than a UE with a normal single connection to the network. Therefore it is the network that determines if the UE needs additional gain from the SHO.

3 illustrates a radio resource optimization method in a wireless system. Embodiments are shown in a simplified wireless system using an IP RAN based system as an example. However, the embodiment is not limited to the system given by way of example, and those skilled in the art will apply the solution to other wireless systems or combinations thereof having the necessary characteristics.

 The radio system of FIG. 3 includes a radio access network (RAN), in this case an IP RAN 120 but the radio access network may also be another radio access network, such as the UTRAN shown in FIG. 1.

The wireless system includes at least one user equipment unit 170. The IP RAN of FIG. 3 includes a wireless network 320 to provide a telecommunications connection to the user equipment 170 and connects the network elements of the wireless network 320 and the wireless network 320 to the core network 100 of the wireless system. And a transport network 322 to connect. A telecommunications connection is established by a user equipment and a base station communicating with each other on a wireless connection (ie, a call or data transfer connection between other UEs is established through the base station). Radio cells generated by a base station generally overlap in a range to provide broad coverage. Wireless network 320 includes base stations 324, 326, 328 which are IP base stations in the case of IP RANs. The first base station 326 provides a wireless connection 306 in the wireless cell 336 to provide access to the user equipment 170 with the wireless system. The logical function of wireless network 320 provides wireless cells 336, 338, 334 to user equipment 170 for wireless transmission and reception. Logical functions of the transport network 322 provide wireless cells 334, 336, 338 to the core network 100. One base station may include several radio cells, but is not shown in FIG. 3 for clarity.

 IP RAN 120 also includes radio access network gateways 121 and 123, which are access points from the core network and other radio access networks to the IP RAN. Radio access network gateways include gateways such as circuit switched gateway (CSGW) 123 for circuit switched traffic, and radio access network gateway (RNGW) 121. The IP RAN generally may also include other RAN gateways, such as radio access network servers (RNAS, RAN access server) for controlling access to the radio access network. The transport network 322 is connected to the CSGW 123 via a connection 314 and to the RNGW 121 via a connection 316. Both connections 314 and 316 are part of the transport network 322. In the example of FIG. 3, connections 314 and 316 are implemented as IP connections, but these implementations are not limited to IP and other suitable techniques may also be used.

In the case of UTRAN (see UTRAN 140 and RNS 140 in FIG. 1), the radio access network includes a Node B connected to the RNC via an Iub interface.

The core network 100 shown in FIG. 3 includes other generations of core networks, such as 2G core network 352, 3G core network 354, 3G packet core network 356, and 2G packet core network 358. . The 2G core network 352 includes a 2G mobile station controller (2G MSC) connected to the CSGW 123 via interface A. The 3G core network 354 includes a 3G mobile station controller (3G MSC) 355 coupled to the CSGW 123 via an Iu-CS interface. The 3G packet core network 356 is connected to the RNGW 121 via an Iu interface. The 2G packet core network 358 is connected to the transport network 322 via a Gb / lP interface. One of the network elements of the wireless network 320 acts as a serving network element that satisfies the serving function, in other words routing the telecommunication connection of the user equipment 170 through the serving network element to the core network 100. It terminates the core network interface and RRC (Radio Resource Control). There is always one serving network element for each UE having a connection to the RAN. In the case of an IP RAN this serving network element is a serving base station (serving IP BTS) and in the case of UTRAN a serving radio network controller (RNC). Wireless network 320 also includes a drifting network element, which in the case of IP RAN is called drifting IP BTS, and in the case of UTRAN, is called drifting RNC. The role of the drifting network element is to simply provide radio resources for the UE connection to the serving network element when the connection needs to use cells controlled by the drifting network element. Serving and drifting network elements will exchange their location. That is, the drifting network element later acts as the serving network element and vice versa.

The telecommunication connection of the UE in a wireless system may be anchored to a network element, such as a base station of a wireless network. The term 'anchoring' may be used in an IP RAN to describe a situation in which serving IP BTS functions are provided by the BTS and do not provide radio resources to the UE. The term in UTRAN can be used to describe a situation where the UE has no connection to any cell controlled by the serving RNC.

The wireless system of FIG. 3 also includes a radio manager 305 coupled to the wireless network 320 to perform control functions of all radio related controls and to manage radio resources between base stations and user equipment in the wireless network. The radio manager 305 is generally configured to receive radio capacity information, which can be represented by the cell load of the radio cell. The radio manager 305 may be performed by one of the RAN common servers, for example, an entity called a common resource management server (CRMS). However, implementation of the embodiment is not limited to CRMS and the radio manager 305 may be any entity configured to control radio resources in the wireless system.

The wireless system of FIG. 3 further includes a transmission manager 303 coupled to the transmission network 322 to perform control functions of all transmission related controls and to manage transmission network resources. The transmission manager 303 has information about the transmission network and its topology. The transmission manager 303 is configured to receive transmission load information about the transmission network 322 available to the radio cell. The transmission manager 303 may be performed by an entity called, for example, an IP transmission resource manager (ITRM), which is disclosed in the applicant's application (PCT / IB02 / 00919) and is incorporated herein by reference. ITRM belongs to the transport network 322 logical structure and manages and monitors the resources that pass through the IP transport network (not the core network). However, the implementation of this embodiment is not limited to ITRM and the transmission manager 303 may be any entity configured to receive information about the transmission load and topology of the transmission network 322.

The transmission manager 303 and the radio manager 305 may be performed in a common device (eg as part of the common manager entity 300) but may be separated as isolated devices (eg in separate servers or other parts of a radio access network). As parts or functions of logical entities) may also be performed.

The wireless system coordinates the telecommunications connection between the receiving means 301 and the user equipment and the serving network element of the wireless network based on the transmission network information to receive the transmission network information about the traffic of the transmission network via the connection 323. And adjusting means 302 connected to the receiving means via a connection 321. In an embodiment the coordinating means 302 adjusts the soft handover of the telecommunication connection between the base station of the wireless network and the user equipment based on the transmission network information received by the receiving means 301.

The receiving means 301 and the coordinating means 302 can be performed as part of the radio manager RM functions (eg as part of the CRMS functions) or as part of the transmission manager TM functions (eg as part of the ITMR) and also their functions. May be divided between the RM 305 and the TM 303. In this case, the TM 303 and the RM 305 may be performed in the same device or in separate devices provided protection of signaling between the devices. The receiving means 301 and the adjusting means 302 will also be performed as part or functions of other logical entities of the radio access network. The receiving means 301 and the coordinating means 302 may be performed in the RNC, for example in the case of IP BTS 324,326,328 or UTRAN.

The receiving means 301 receives the survey and reports an indication of the transmission load of the transmission network 322. The transmission load will also appear as the transmission capacity of the transmission network 322.

The receiving means 301 directs the transmission load information to the adjusting means 302 to which they are connected. The coordinating means 302 then adjusts the telecommunication connection between the serving network element and the user equipment 170 based on the transport network information. In particular, the adjusting means 302 is used to adjust the soft handover of the telecommunication connection between the base station and the user equipment of the wireless network based on the transmission network information.

3 illustrates a situation where the UE 170 is in a soft handover state. The user equipment 170 communicates with the first base station 326 via a wireless connection 306, and the cell 336 is included in an active set of the UE 170. The UE 170 measures the common pilot of the first base station 326 and simultaneously measures the common pilot of the second base station 324 and the third base station 328. Wireless connections 304 and 308 between UE 170 and BTS 324 and BTS 328 are then established to provide connectivity to core network 100 via the base stations, and cells 334 and 338 are already cells Is added to the active set containing 336. Simultaneous connections between the UE 170 and the network are called soft handover legs, which are the wireless connection 304, 308 between the UE 170 and the base stations 324, 328 and the serving network with the base station 324, 328. It also includes transport connections between the network element acting as an element (serving IP BTS in the case of IP RAN and serving RNC in the case of UTRAN). Creation and retention of SHO legs increases the load on the transport network 322. Assume that the receiving means 301 receives the transmission network information about the transmission network 322 indicating a heavy load or congestion in the transmission network 322. This information is directed to the adjustment means 302. In an embodiment, the adjusting means 302 adjusts the soft handover of the telecommunication connection between the base station and the user equipment of the wireless network based on the transmission network information. When the load in the transmission network 322 changes, for example when it decreases, the receiving means 301 receives the information about it and instructs the adjusting means 302 to take this information into account based on the updated transmission network information. Adjust handover.

In Figure 3 we also assume BTS 326 as the serving network element, in this case serving BTS 326. BTS 326 is connected to transport network 322 via connection 317, and BTS 324 is connected to ( BTS 328 is connected to the transport network via connection 318. Connections 317, 318, and 319 belong to transport network 322. Serving BTS 326 is connected to BTS 324 via connection 315. Is connected to the BTS 328 via connection 313. Connections 313 and 315 are also part of the transport network 322 and also actually connect to the transport network 322 from the base stations 324, 326 and 328. That is, connection 313 includes connections 317 and 318 and connection 315 includes connections 317 and 319. The serving BTS 326 is a UE between the serving BTS 326 and the core network 100. Protects the telecommunications connection of 170. The telecommunications connection includes a wireless connection (e.g., connection 304 to a base station (e.g., BTS 324)); If the base station 324 is a drift base station it includes a connection 315 between the drift base station and the serving base station BTS 326, and a connection between the serving base station 326 and the core network 100. In the sort handover situation, Such a telecommunication connection may include a wireless connection 306, 304, 308 and a connection between the serving BTS 326 and the drift BTS 324 (ie, connections 315 and 313) and also between the serving BTS 326 and the core network 100. In the case of UTRAN, the serving RNC routes the UE's telecommunications connection to the core network 100 and the telecommunications connection includes all wireless and transport connections between the UE 170 and the core network 100. Include them.

As already mentioned, the receiving means 301 receives transmission network information about the transmission network 322 which indicates heavy load or congestion in the transmission network 322. This information is directed to the adjustment means 302. In an embodiment, the coordinating means 302 adjusts the telecommunication connection between the serving network element and the user equipment based on the transmission network information. In our example, the coordination means 302 adjusts the telecommunication connection between the serving BTS 326 and the UE 170 based on the transmission network information. Again, when the load changes in the transmission network 322, the receiving means 323 receives this information and instructs the information to the coordination means 302, taking this into account based on the updated transmission network information. To coordinate the connection between 326 and the UE 170.

In an embodiment, when coordinating a telecommunications connection between the serving network element and the user equipment, the coordinating means 302 is adapted to establish an electrical connection between the base station of the wireless network and the user equipment having a wireless connection to the base station based on the transmission network information. It will coordinate soft handover of the communication connection.

In an embodiment, the adjustment means 302 adjusts the criteria for soft handover to reduce the active set update. This may be done by using the adjustment means 302 to adjust the SHO limit for soft handover triggering, or alternatively to adjust the SHO hysteresis limit for soft handover triggering. More specifically, the adjustment means 302 can be used to adjust the SHO criteria by adjusting the limit that triggers the soft handover survey report based on the transmission network information, alternatively the SHO hysteresis limit that triggers the soft handover survey report. It can be used to adjust. In another embodiment, the adjustment means 302 maintains existing limits and hysteresis limits, but is used to adjust the SHO by adjusting the sending of the active set update message to the UE 170. In another embodiment, the update message will not be delivered even if the UE survey indicates an update reason to reduce the active set update. In another embodiment, the adjusting means 302 is used to adjust the SHO by adjusting the SHO limit or hysteresis limits with respect to the relative signal strength of the telecommunication connection between the base station and the user equipment. SHO criteria and SHO limits and hysteresis limits for triggering survey reports will also be adjusted individually for each handover leg.

 In an embodiment the coordination means 302 adjusts the number of soft handover legs allowed for the UE 170 (ie, soft handover legs are allowed to be generated only between a certain number of base stations or cells). In an embodiment the adjusting means 302 limits the number of SHO legs to two SHO legs.

In another embodiment, the coordination means 302 adjusts soft handover allowance with a particular service (ie soft handover will not be used with all services). For example, soft handover may not be allowed to be used with any non-real time (NRT) service, or may only be allowed for some NRT services. This restriction will be based on the type of service used, traffic classification or access priority. For example, soft handovers are only allowed for so-called gold users and will not be allowed for silver or bronze users.

In an embodiment, the coordinating means 302 coordinates the use of soft handover per base station. In another embodiment, the adjustment means 302 coordinates the use of handover per radio cell. This is achieved, for example, by setting limits on SHO usage for specific or all radio cells or base stations. The limit would be, for example, the maximum amount of traffic (kbps) from the cell or BTS.

In an embodiment, the adjusting means 302 adjusts the bit rate assigned to the bearer between the network elements of the wireless network. In general, when adjusting the allocated bit rate through the Iur or Iub interface in the UTRAN, or the Iur 'interface in the IP RAN, the adjusting means 302 allocates a smaller bit rate for some non-real-time (NRT) services. In an embodiment the assigned bit rate may also be multiplexed (ie, the assigned bit rate for several bearers is adjusted simultaneously). This can be achieved by allowing only a certain number of bits (i.e., a specific bit rate for all bearers) or giving a larger bit rate to one or several connections at the same time.

In an embodiment the coordination means 302 coordinates the anchoring of the telecommunications connection of the user equipment to the network element of the wireless network. In embodiments the anchoring is limited. In other embodiments, anchoring is not allowed. For example, when the transmission network information received through the receiving means 301 indicates congestion or heavy load in the transmission network, the coordinating means 302 may indicate that the telecommunication connection of the UE 170 is a base station (e.g., BTS 326). Used to prevent anchoring. This means that the serving function is not anchored to the BTS 326 and other base stations (eg, BTS 328) can act as the serving base station.

The functions disclosed may be performed in other parts of the wireless system by software means (generally as a processor and its software), but various hardware solutions, such as circuits composed of logic elements or one or more custom semiconductor ASICs, may also be implemented. Mixing of these other implementations can also be performed. When selecting an implementation method, those skilled in the art will consider the requirements placed on the size and power consumption of the device, the required processing capacity, the cost of production, and the yield.

Referring now to the flowchart of FIG. 4, there is shown a first method of resource optimization in a wireless system.

The method starts at 400. At 402, transport network information regarding traffic in the transport network of the wireless system is transmitted to the wireless network of the wireless system. The transport network connects the network elements of the wireless network and the wireless network to the core network of the wireless system.

At 404, one of the network elements of the wireless network acts as a serving network element, which routes the telecommunication connection of the user equipment through the serving network element to the core network.

At 406, the telecommunications connection of the user equipment between the serving network element and the user equipment is adjusted based on the transmission network information. The method ends at 408.

In the adjustment of the telecommunication connection of the user equipment of the embodiment of the first method, the soft handover of the telecommunication connection between the base station of the wireless network and the user equipment having the wireless connection to the base station is adjusted based on the transmission network information. .

Referring now to the flowchart of FIG. 5, a second method of resource optimization in a wireless system is shown.

The method starts at 500. At 502, transport network information about traffic in the transport network of the wireless system is transmitted to the wireless network of the wireless system. The transport network connects the network elements of the wireless network and the network to the core network of the wireless system.

At 504, soft handover of the telecommunications connection between the base station and the user equipment of the wireless network is adjusted based on the transmission network information. The method ends at 506.

According to the second method, one of the network elements of the wireless network will act as a serving network element, which routes the telecommunication connection of the user equipment through the serving network element to the core network.

Other embodiments applicable to both methods are now described.

In an embodiment the serving network element is a serving base station or a serving radio network controller.

In an embodiment, the telecommunications connection comprises a wireless connection between the user equipment and the serving network element.

In an embodiment, the telecommunication connection comprises a wireless connection between user equipment and a base station of a wireless network, and a connection between a base station and a serving network element.

In an embodiment the anchoring of the telecommunications connection of the user equipment to the network element of the wireless network is coordinated. In embodiments the anchoring is limited. In other embodiments, anchoring is not allowed.

In an embodiment, the criteria for soft handover are adjusted. In an embodiment the limit that triggers the soft handover survey report is adjusted. In an embodiment the hysteresis limits that trigger the soft handover survey report are adjusted. In an embodiment the soft handover limits are adjusted. In an embodiment the soft handover hysteresis limits are adjusted. In other embodiments the limits on relative signal strength are adjusted. In an embodiment the hysteresis limits for relative signal strength are adjusted.

In an embodiment, the number of soft handover legs is adjusted. In an embodiment the number of SHO legs is limited to two SHO legs.

In an embodiment, the acceptability of soft handover with certain services is adjusted. In an embodiment soft handovers are not allowed to be used with any non-real time (NRT) service, or are only allowed to be used for some NRT service. In an embodiment the adjustment is based on the type of service used, the traffic classification or the priority of the connection.

In an embodiment, the use of soft handover per base station is coordinated.

In an embodiment, the use of soft handover per radio cell is coordinated.

In an embodiment, the bit rate assigned to the bearer between the elements of the wireless network is adjusted. In an embodiment, a smaller bit rate is allocated for some non-real-time (NRT) services. In another embodiment, the assigned bit rate may be multiplexed (ie, the assigned bit rate is adjusted simultaneously for several bearers).

The disclosed methods can be performed by the wireless system disclosed previously, as well as other types of wireless systems can also be used.

The above adjustments will only be used for existing telecommunication connections, or new telecommunication connections. The adjustments will be used to modify the control function of the connection at the user equipment and / or the IP BTS or RNC.

The adjustments will be used for a telecommunications connection between all or some base stations of the wireless system.

The adjustments, in particular the adjustments of the SHO and the limitations of the SHO load, are especially necessary when the transport network is under heavy load (eg during busy times). When the transport network is under less load, there is less demand for coordination or no coordination is needed.

Adjustments will be temporarily needed when the network is under load and the mobility of the UEs is high. In this case, the percentage of SHO traffic is very high. When SHO traffic is classified as urgent traffic, its large percentage reduces the gains that can normally be gained by using differential service (DiffServ).

6 shows an example of the transmission load that the receiving means reports to the adjusting means. As the load increases, triggering to reduce the SHO load is performed. These actions reduce the load. In such a situation, the load may be, for example, a direct measurement of the transmission load (kbps) or a QoS measurement such as transmission queue length or transmission delay.

7 illustrates a method of reducing the SHO probability of a connection using a resource optimization method. Thresholds TH1 and -TH1 provide thresholds when new connections are added to the active set, and TH2 and -TH2 provide thresholds when connections are removed from the active set. This action reduces the threshold as shown in the figure. Hysteresis limits will also be reduced (eg TH2-TH1).

8 shows a simulated SHO load in one cell. The vertical axis represents the SHO load percentage, which in this example is a separate load due to the second and third SHO legs compared to the case where there is only one leg per connection (ie no SHO). The variation of SHO load is severe. During a 2-3 second time interval, the SHO load increases or decreases by tens of percent. This rapid change will not be stable unless actively restricting SHO traffic. For example, admission control cannot respond so quickly. The deviation depends on the SHO limit shown in FIG. If TH1 = TH2 = 0dB, there will be no SHO or SHO load.

Although the invention has been described with reference to the examples according to the accompanying drawings, the invention is not limited thereto but may be modified in several ways within the scope of the appended claims.

Claims (32)

Transmitting (402) transport network information about traffic in a transport network of a wireless system to a wireless network of the wireless system, wherein the transport network transmits network elements and the wireless network of the wireless network to the core network of the wireless system. Connect to; Wherein the serving network element of the wireless network routes (404) a telecommunications connection of user equipment through the serving network element to the core network. Coordinating a telecommunications connection of the user equipment between the serving network element and the user equipment based on the transport network information. 2. The resource optimization of a wireless system according to claim 1, wherein, in said adjusting step, soft handover of said telecommunication connection between a base station of said wireless network and said user equipment is adjusted based on said transmission network information. Way. Transmitting (502) transport network information about traffic in a transport network of a wireless system to a wireless network of the wireless system, wherein the transport network transmits network elements of the wireless network and the wireless network to the wireless system. In the resource optimization method in a wireless system connected to the core network of, Adjusting (504) soft handover of a telecommunication connection between a base station and user equipment of the wireless network based on the transmission network information. 4. The method of claim 3, wherein one of the network elements of the wireless network is a serving network element, which serves to route the telecommunications connection of the user equipment through the serving network element to the core network. A resource optimization method in a wireless system. 5. The method of claim 1 or 4, wherein the serving network element is a serving base station or a serving radio network controller. 5. A method according to claim 1 or 4, wherein the telecommunication connection comprises a wireless connection between the user equipment and the serving network element. 5. A system according to claim 1 or 4, wherein the telecommunication connection comprises a wireless connection between the user equipment and a base station of the wireless network and a connection between the base station and the serving network element. Resource optimization method. 5. A method according to claim 1 or 4, wherein in said step of coordinating said anchoring of said telecommunication connection of said user equipment to a network element of said wireless network is coordinated. 4. Method according to claim 1, 2 or 3, characterized in that the criterion for soft handover is adjusted in the adjusting step. 4. A method according to claim 1, 2 or 3, wherein the number of soft handover legs is adjusted in the adjusting step. 4. A method according to claim 1, 2 or 3, wherein the allowance of soft handover with a certain service is adjusted in the adjusting step. 4. A method according to claim 1, 2 or 3, characterized in that the use of soft handover per base station is coordinated in the coordination step. 4. A method according to claim 1, 2 or 3, wherein the use of soft handover per radio cell is coordinated in the coordination step. 4. Method according to claim 1, 2 or 3, characterized in that the bit rate allocation for the bearer between the network elements of the wireless network is adjusted in the coordination. The core network 100; A wireless network 320 coupled to the core network 100, wherein the wireless network includes network elements 324, 326, and 328 for providing a telecommunications connection to user equipment 170, wherein one of the network elements is a serving network element. Configured to act as (326), the serving network element (326) routing a telecommunication connection of the user equipment (170) through the serving network element (326) to the core network (100); A transport network (322) connecting the network elements of the wireless network and the wireless network (320) to the core network; And In a wireless system comprising receiving means (301) for receiving transmission network information about the traffic of the transmission network (322), The wireless system is means for coordinating the receiving means 301 to adjust the telecommunications connection of the user equipment 170 between the serving network element 326 and the user equipment 170 based on the transmission network information. (302) further comprising a wireless system. 16. The apparatus of claim 15, wherein said coordinating means (302) coordinates soft handover of a telecommunications connection between a base station of said wireless network (320) and said user equipment (170) based on said transmission network information. Wireless system. The core network 100; A wireless network (320) connected to the core network (100), wherein the wireless network includes network elements (324,326,328) to provide a telecommunication connection to user equipment (170); A transport network (322) connecting the network elements of the wireless network and the wireless network (320) to the core network (100); And In a wireless system comprising receiving means (301) for receiving transmission network information about the traffic of the transmission network (322), The wireless system may comprise coordination means coupled to the receiving means 301 to coordinate soft handover of a telecommunication connection between the base station of the wireless network 320 and the user equipment 170 based on the transmission network information. 302) further comprising a wireless system. 18. The system of claim 17, wherein one of the network elements of the wireless network is configured to act as a serving network element 326, which serves to serve a telecommunications connection of the user equipment 170. And route to the core network (100) via a network element (326). 19. The system of claim 15 or 18, wherein the serving network element is a serving base station or a serving radio network controller. 19. The wireless system of claim 15 or 18, wherein the telecommunication connection comprises a wireless connection between the user equipment (170) and the serving network element (326). 19. The system of claim 15 or 18, wherein the telecommunication connection is a wireless connection between the user equipment 170 and the base stations 324,328 of the wireless network 320 and the base station 324,328 and the serving network element (20). 326) a connection between the wireless system. 19. The apparatus according to claim 15 or 18, wherein the adjustment means 302 adjusts the anchoring of the telecommunication connection of the user equipment 170 to the network element of the wireless network 320 based on the transmission network information. Wireless system, characterized in that. 18. Wireless system according to claim 15, 16 or 17, wherein said adjustment means (302) adjusts the criteria for soft handover. 18. A wireless system according to claim 15, 16 or 17, wherein the adjustment means (302) adjusts the number of soft handover legs. 18. A wireless system according to claim 15, 16 or 17, wherein said coordinating means (302) adjusts the tolerance of soft handover with a certain service. 18. A wireless system according to claim 15, 16 or 17, wherein said coordinating means (302) coordinates the use of soft handover per base station. 18. A wireless system according to claim 15, 16 or 17, wherein the means for adjusting (302) coordinates the use of soft handover per radio cell. 18. A wireless system according to claim 15, 16 or 17, wherein said means for adjusting (302) adjusts bit rate allocation for bearers between network elements of said wireless network. A core network; A wireless network coupled to the core network, wherein the wireless network comprises network elements to provide a telecommunications connection to a user device and one of the network elements is configured to act as a serving network element, the serving network element Route a user device telecommunications connection through the serving network element to the core network; A transmission network connecting the network elements of the wireless network and the wireless network to the core network; And a receiving means for receiving transmission network information about the traffic of the transmission network, wherein the base station of the wireless system comprises: And the base station comprises coordination means connected to the receiving means to coordinate a telecommunications connection of the user equipment between the serving network element and the user equipment based on the transmission network information. A core network; A wireless network coupled to the core network, wherein the wireless network includes network elements to provide a telecommunications connection to a user device; A transmission network connecting the network elements of the wireless network and the wireless network to the core network; And a receiving means for receiving transmission network information about the traffic of the transmission network, the base station of the wireless system, The base station further comprises coordinating means connected to the receiving means to coordinate soft handover of a telecommunication connection between the base station and the user equipment based on the transmission network information. A core network; A wireless network coupled to the core network, wherein the wireless network comprises network elements to provide a telecommunications connection to a user device and one of the network elements is configured to act as a serving network element, the serving network element Route a user device telecommunications connection through the serving network element to the core network; A transmission network connecting the network elements of the wireless network and the wireless network to the core network; And receiving means for receiving transmission network information about the traffic of the transmission network, the wireless network controller of the wireless system comprising: The radio network controller comprises coordinating means connected to the receiving means to negotiate a telecommunications connection of a user device between the serving network element and the user device based on the transmission network information. Network controller. A core network; A wireless network coupled to the core network, wherein the wireless network includes network elements to provide a telecommunications connection to a user device; A transmission network connecting the network elements of the wireless network and the wireless network to the core network; And a receiving means for receiving transmission network information about the transmission network traffic, the wireless network controller of the wireless system comprising: The wireless network controller further comprising coordinating means connected to the receiving means for coordinating soft handover of a telecommunication connection between a base station and the user equipment based on the transmission network information. Controller.

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