초록 ▼

The amount of data that is transmitted over a cellular network is reduced thereby providing an improvement in the quality of service. The data reduction is obtained by intercepting data units transferred over a bearer between two nodes, such as a BTS and BSC. The current load for a bearer is determi

The amount of data that is transmitted over a cellular network is reduced thereby providing an improvement in the quality of service. The data reduction is obtained by intercepting data units transferred over a bearer between two nodes, such as a BTS and BSC. The current load for a bearer is determined and based on the current load, the source of the data is requested to change the bit rate of subsequent data units. Thus, the bit rate of data that is transmitted toward two intermediate nodes is changed in order to control the load over a bearer that connects the two intermediate nodes.

대표청구항 ▼

1. A method for controlling the load over a bearer that communicatively couples two intermediate nodes, a first node and a second node in a cellular fixed network, wherein each end of the bearer is communicatively coupled to its associated node via a first load reducer module and a second load reduc

1. A method for controlling the load over a bearer that communicatively couples two intermediate nodes, a first node and a second node in a cellular fixed network, wherein each end of the bearer is communicatively coupled to its associated node via a first load reducer module and a second load reducer module respectively, the method comprising the actions of: measuring a current load over the bearer;adjusting, based on the measured load over the bearer, the load that is transmitted toward the two intermediate nodes by requesting a change in the bit rate used by a source of data that is transmitted toward the two intermediate nodes;intercepting, at the first load reducer module, a data unit received from the first node, wherein the data unit carries a media payload and the media payload targeted toward a destination device;determining whether the data unit is capable of impacting the bit rate that is used by the destination device and, based on the measured load;changing a portion of the data unit, which impacts the bit rate used by the destination device; andtransferring the changed data unit toward the bearer. 2. The method of claim 1, wherein each load reducer is capable of reducing the number of bits that are transmitted toward the bearer. 3. The method of claim 1, wherein the first node is a base station controller (BSC) and the second node is base transceiver station (BTS). 4. The method of claim 1, wherein the first node is BTS and the second node BSC. 5. The method of claim 1, wherein the destination device is a mobile terminal. 6. The method of claim 1, wherein the data unit is an Abis frame. 7. The method of claim 6, wherein the step of determining whether the data unit is capable of impacting the bit rate of the destination device, further comprising: (i) parsing the Abis frame searching for a Request or Indication Flag (RIF) and its associated control bits; (ii) determining whether the Request Indication Flag reflects a request; and (iii) changing the control bits. 8. The method of claim 1, wherein the destination device uses an adaptive multi-rate (AMR) codec. 9. The method of claim 1, wherein the step of measuring the current load over the bearer further comprises the steps of: (i) calculating the bit rate of the currently received data traffic from the bearer;(ii) defining the percentage of the calculated currently received bit rate from a maximum bit rate of the bearer; and(iii) presenting the defined percentage as a load parameter. 10. An apparatus for controlling the load over a bearer communicatively coupling two intermediate nodes, a first node and a second node in a cellular fixed network, wherein at least one end of the bearer is communicatively coupled to its associated node via the apparatus, the apparatus comprising: a controller;a manipulator module capable of receiving data traffic that is transferred toward the bearer, manipulating the data traffic by reducing the number of bits in the received data traffic, and transferring the manipulated data traffic toward the bearer; anda bit rate changer module capable of adjusting the load that is transmitted toward the first and second nodes by changing the bit rate used by a source of data, the load being adjusted by:a load measuring module capable of measuring a current load over the bearer and adjusting the load by the bit rate changer module is based on the measured current load over the bearer;the bit rate changer module is capable of adjusting the load by changing the bit rate used by a source of data that is transmitted toward the two intermediate nodes;(a) intercepting a data unit received from the first node, wherein the data unit carries a media payload and the media payload targeted toward a destination device;(b) determining whether the data unit is capable of impacting the bit rate that is used by the destination device and changing a portion of the data unit which impacts the bit rate used by the destination device; and(c) transferring the changed data unit toward the bearer. 11. The apparatus of claim 10, wherein the first node is a base station controller (BSC) and the second node is a base transceiver station (BTS). 12. The apparatus of claim 10, wherein the first node is a base transceiver station (BTS) and the second node is a base station controller (BSC). 13. The apparatus of claim 10, wherein the destination device is a mobile terminal. 14. The apparatus of claim 10, wherein the data unit is an Abis frame. 15. The apparatus of claim 10, wherein the codec of a destination device is an adaptive multi-rate (AMR) codec. 16. An apparatus for controlling the load over a bearer communicatively coupling two intermediate nodes, a first node and a second node in a cellular fixed network, wherein at least one end of the bearer is communicatively coupled to its associated node via the apparatus, the apparatus comprising: a controller;a manipulator module capable of receiving data traffic that is transferred toward the bearer, manipulating the data traffic by reducing the number of bits in the received data traffic, and transferring the manipulated data traffic toward the bearer; anda load measuring module capable of measuring a current load over the bearer and adjusting the load by the bit rate changer module is based on the measured current load over the bearer by:(a) calculating the bit rate of the currently received data traffic from the bearer;(b) defining the percentage of the calculated currently received bit rate from a maximum bit rate of the bearer; and(c) presenting the defined percentage as a load parameter; anda bit rate changer module capable of adjusting the load that is transmitted toward the two nodes based on the measured current load over the bearer;the bit rate changer module is capable of adjusting the load by changing the bit rate used by a source of data that is transmitted toward the two intermediate nodes. 17. The apparatus of claim 16, further capable of adjusting the load that is transmitted toward the two intermediate nodes by informing one of the intermediate nodes to adjust the load that is transmitted toward the other intermediate node. 18. The apparatus of claim 17, wherein causing one of the intermediate nodes to adjust the load is implemented by signaling that a dummy link fails. 19. The apparatus of claim 16, wherein the bit rate changer module is capable of: (a) parsing the Abis frame searching for a Request Indication Flag (RIF) and its associated control bits; (b) determining whether the Request Indication Flag reflects a request; and (c) changing the control bits based on the calculated load parameter.