WO2003077579A1 - Radio resource allocation in a radio communication network - Google Patents
Radio resource allocation in a radio communication network Download PDFInfo
- Publication number
- WO2003077579A1 WO2003077579A1 PCT/CH2002/000148 CH0200148W WO03077579A1 WO 2003077579 A1 WO2003077579 A1 WO 2003077579A1 CH 0200148 W CH0200148 W CH 0200148W WO 03077579 A1 WO03077579 A1 WO 03077579A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- user
- utilization factor
- allocated
- radio
- data
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
- H04W28/20—Negotiating bandwidth
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
Definitions
- the invention relates to a method for allocating radio resources of a radio communication network to a plurality of users, where a user is allocated a certain transmission capacity.
- the invention further relates to a radio network as well as a device with means for an allocation of radio resources to a plurality of users, where a user is allocated a certain transmission capacity.
- resource allocation it is not only important, how much of the available resource, i.e. data rate, is allocated to a user, but also how fast it is allocated to him. Radio resource allocation is particularly difficult, when a user is sending information intermittently. Ideally, the necessary resources should be allocated to the user as soon as he asks for it and then the resources should be taken away, again without delay, when he has nothing more to send.
- the user can not send data continuously from the beginning, but only during the time when the resource is available. Hence he sometimes has to wait for allocation even if he has data to send. This results in a lowered throughput for this user, but since the resource can be shared with other users, less resources are wasted.
- the user will have a high throughput rate if he has data to send. However, if he is only able to send data intermittently, some of the resources allocated to the user are wasted, because he was not using it all the time.
- Each allocation method has its advantages and disadvantages.
- One method is best suited for a first application while another method is best suited for another application.
- the pro- blem is, that the network provider does not know, how the actual allocation method performs. He gets no corresponding feedback.
- the object of the invention is achieved by the method defined in claim 1.
- the radio resources of the network are allocated to a plurality of users and where a user is allocated a certain transmission capacity
- the radio resources are, according to the invention, allocated to a user depending on an utilization factor which is determined relating to the transmission capacity allocated to a user. In other words, it is determined, how much of the transmission capacity, which is assigned to a particular user, is actually used by this particular user. If the actually used transmission capacity is too low compared to the assigned capacity, then the algorithm for radio resource allocation can be modified or adjusted in order to achieve a higher utilization factor.
- the utilization factor is some kind of measure for the amount of radio resources, which are assigned to but not used by the user, in other words, a measure for the wasted amount of radio resources.
- the utilization factor can, for example, be expressed as a ratio of the used to the unused resources, as an absolute value of the unused resources or as any other suitable value.
- the utilization factor It could for example be determined by monitoring the absolute amount of transmitted data or by determining the existence of an active connection to another terminal. But these possibilities could lead to distorted values, because the user has transmitted a large amount of data, but could have transmitted an even larger amount or because there exists an active connection, but ac- tually no data is transmitted.
- the utilization factor is determined by detecting time intervals in which the user does not or not completely exploit the transmission capacity which is allocated to him. He either transmits no or not as much data as the assigned transmission capacity would allow. This enables a precise measurement how much of the transmission capacity allocated to the user is actually used by the user to transmit data.
- An advantageous way to determine the utilization factor is to detect just those time intervals, in which the user does not make use of the assigned transmission capacity, that means in which the user does not transmit or receive any data at all.
- the detection of these time intervals can be done in several, favoured ways.
- the first of them is to directly monitor the radio interface of the radio communication network and detect those time periods without any data throughput.
- communication systems with a plurality of communication channels only those channels which are allocated to the particular user have to be monitored.
- This method has the advantage, that the equipment to detect the time intervals, i.e. a radio receiver, can be placed anywhere between the transmitter and the receiver, where the sig- nal from the transmitter can be received. It furthermore permits to consider properties of the air interface when determining the utilization factor.
- data transmission between a transmitter and a transceiver is typically done with a multilayer protocol stack where each layer is designed to carry out a specific task.
- Many of the current protocol stacks comply with the generally known OSI (Open Systems Interconnection) model, which specifies seven different layers.
- OSI Open Systems Interconnection
- the measuring of the data rate, the number of bytes transmitted and the actual transmission time can, for example, be done by evaluating the protocols used for the transmission in the radio network.
- the second method it is not the air interface that is monitored, but it is the first layer of the protocol stack, which is monitored directly in the transmitter and/or the receiver.
- the first layer is usually known as the physical layer and performs tasks in connection with the actual bit transmission.
- An advantage of this method is, that no additional hardware is necessary, because the mo- nitoring can for example be implemented as software running on the hardware of the transmitter and/or the receiver.
- a third method can be applied in systems, where the user is allocated radio resources by allocating a data transmission rate or where the allocated radio resources can be expressed as a data transmission rate.
- an actual transmission time is determined by measuring, how much time is needed by the user to transmit a given amount of data.
- a target transmission time which relates to the shortest possible time period in which the given amount of data can be transmitted with the given data rate, is calculated by dividing the given amount of data by the data transmission rate.
- the time intervals without data transmission are calculated by subtracting the target transmission time from the actual transmission time.
- the desired utilization factor can be determined.
- This method also can be easily implemented in existing systems for instance as pure software to be integrated in node of a telephone network.
- the data transmission rate e.g. a given number of bytes per second
- the amount of transmitted data e.g. the number of bytes transmitted
- the measuring of the data rate, the number of bytes transmitted and the actual transmission time can, for example, again be done by monitoring the protocols used for the transmission in the radio network.
- a user can be assigned more than one transmission channel simultaneously, i.e. two or more timeslots in a TDMA system or two different carrier frequencies in a FDMA system. It would be possible to determine the utilization factor relating to the joint transmission capacity of all or at least two transmission channels. However, in such systems, it could be possible, that the user continuously transmits data in one channel but only intermittently in another channel. Hence, there are time intervals with a higher throughput than other time intervals but there are no time intervals with no data throughput at all. Thus the determination of the utilization factor by detection of time intervals without any data transmission could produce incorrect results.
- the utilization factor is preferably determined for each transmission channel separately by separate- ly monitoring each channel.
- a radio communication network with means for an allocation of radio resources to a plura- lity of users, where a user is allocated a certain transmission capacity further includes means for the determination of the utilization factor relating to the transmission capacity allocated to a specific user.
- the means for allocating the radio resources are formed in such a way that the radio resources are allocated to the users depending on the determined utilization factor.
- Fig. 1 A diagram showing the waiting time for a user and the wastage of radio resources for a particular user transmission behaviour and a specific radio resource allocation method within a radio communication network;
- FIG. 2 another diagram showing the waiting time and the wastage of radio re- sources for another transmission behaviour and another allocation method
- Fig. 3 a schematical view of a part of a radio communication network according to the invention.
- Fig. 4 a more detailed view of some elements of the radio network as shown in fig. 3.
- a first method allocates a particular amount of data for a long time, as soon as a user wants to transmit data.
- This method has a disadvantage with respect to the exploitation of the totally available radio resources. This is particularly true in those cases, where the user is not able to produce enough data to send it continuously, because for example his production rate is smaller than the data transmission rate or because he does not want to send anything.
- the waiting time for a user and the wastage of the radio resources for such a scenario are shown in the diagram of figure 1.
- Time is shown as the horizontal axis of the diagram.
- the first row 1.1 shows the intention of the user to transmit data.
- Row 1.1 is alternating between high and low, because, as explained above, the user is not able to send data continuously.
- Row 1.2 shows the radio resources which are allocated to the user. After the first send request of the user, he is allo- cated a particular resource for a long time without any interruptions.
- Row 1.3 shows the time periods, when the user is actually transmitting data. Row 1.3 has substantially the same shape as row 1.1 , which indicates that the user can send data as soon as he has some data to send. He does not have to wait until he is allocated some resources to transmit his data. The waiting time for the user is shown in row 1.4.
- row 1.4 is always low.
- row 1.5 shows the wastage of the radio resources allocated to the user. During those periods of time where the line in row 1.5 is high, radio resources are allocated to the user, but not used by him, because he is not able or does not want to transmit data. As can be seen, the percentage of the line being high is relatively high and there- fore a lot of radio resources are wasted. On the other hand, the user hardly has to wait to transmit data, resulting in a high data throughput for this user.
- the user has a lot of data to send, which is indicated by row 2.1, which is high almost all of the time.
- row 2.1 which is high almost all of the time.
- the user is alloca- ted a specific radio resource only for small periods of time.
- row 2.3 which shows the actual transmission time, has substantially the same shape as row 1.2, which indicates that the actual sending time is not limited by the ability of the user to produce the data but by the short resource allocation periods.
- the data throughput is lowered, because the user has to wait for data transmission almost all of the time, when he is not allocated any resources.
- This is shown in row 2.4.
- the last row 2.5 again shows the wastage of the radio resources.
- the advantage of this allocation method can be seen. Only a small amount of the allocated radio resources are wasted, because the periods of ti- me, where the user is allocated the radio resources, but does not actually transmit any data, are very small. Hence the available radio resources can be shared with other users.
- a utilization factor which is a measure for the amount of radio resources wasted by a user, is determined.
- figure 3 shows a part of a mobile telephone network with a mobile switching centre (MSC) 3, two basestations 4 and 5, which are connected to the MSC 3 by communication links 6 and 7, and two mobile user terminals 8 and 9, which are connected to the basestations 4 and 5 respectively by radio links 10 and 1 1.
- MSC 3 is connected to a telephone network 14 by a communication link 15 and a second MSC 12 is connected to MSC 3 by a communication link 13.
- MSC 12 can serve other basestations and users (not shown) in a different geographical area.
- the connection between the mobile terminals 8 and 9 and the basestations 4 and 5 are always radio links
- the communication links 6, 7 between the basestations 4,5 and the MSC 3 as well as the communication links 13, 15 from or to the MSC 3 can be of a any type, including for example cable, radio or glass fibre links.
- a mobile telephone network comprises further components, which are not essential to the invention and therefore not shown in the drawings.
- the utilization factor has to be determined for the user of terminal 8, called user A, when, for instance, communicating with the user of terminal 9, called user B.
- This monitoring of the communication activities of user A can be done in different locations.
- monitoring devices 16.1 - 16.5 are shown in some of these locations.
- Monitoring device 16.1 is located within the mobile switching centre MSC 3 and is built for monitoring the communication channels used by user A. Monitoring device 16.1 could directly monitor the data packets sent from or to user A on the incoming or outgoing links of MSC 3. In this case, it would have to evaluate the data packets by itself. Another possibility would be to benefit from the fact, that the MSC 3 does evaluate the data packets any- way and therefore use these results to monitor the transmission protocols and to determine the utilization factor.
- Monitoring device 16.2 directly monitors the communication link 6 between MSC 3 and basestation 4 by tapping this link. How this link is tapped depends on the physical type (radio link, cable etc.) of link.
- Monitoring device 16.3 is located within basestation 4. The monitoring can be done in the same ways as done by monitoring device 16.1.
- Monitoring device 16.4, which monitors directly the air interface by receiving and evaluating the transmission signals sent by terminal 8 or the basestation 4, is located somewhere within the radio cell served by basestation 4, where it can receive the signals from the basestation 4 as well as those from terminal 8.
- Monitoring device 16.5 is directly connected to terminal 8. It can evaluate the data packets by itself or, similar to monitoring device 16.1 can benefit from the data packet evaluation of the terminal 8.
- Each of the monitoring devices 16.1 - 16.5 can, as shown in figure 3, be implemented as an independent apparatus in a separate housing which then has to be connected to the other components of the network as required. However, the monitoring devices 16.1 - 16.5 can also be integrated in other components of the network by means of hardware and/or software.
- one of the shown monitoring devices 16.1 - 16.5 is sufficient. Nevertheless, two or more monitoring devices 16.1 - 16.5 could be used simultaneously to determine two or more utilization factors. Here the resource allocation could depend on some or all of these utilization factors.
- FIG. 4 shows a more detailed view of the monitoring device 16.4 and MSC 3, which, according to our example, allocates the required radio resources to the terminals 8 and 9 with an allocation unit 21.
- the resource allocation is done depending on this utilization fac- tor, that is why it has to be communicated to the MSC 3.
- the monitoring of the communication between basestation 4 and terminal 8 by the monitoring device 16.4 is done by receiving the transmission signals from terminal 8 and/or basestation 4, transmitted on radio link 10. Next, the monitoring device 16.4 detects with a detector 18 time periods in the received signals where the terminal 8 does neither send nor receive any data.
- a processor unit 19 determines a utilization factor and transmits this factor to the MSC 3.
- the communication link 20 which is shown as a dotted line, because the type of communication link depends on where the monitoring device 16.4 is located.
- the utilization factor would probably be transmitted to the MSC 3 by a radio link from the monitoring device 16.4 to the basestation 4 and fur- ther from basestation 4 to MSC 3 via communication link 6.
- the utilization factor as received by the MSC 3 is forwarded to the allocation unit, which, depending on the value of the utilization factor, adjusts the currently used resource allocation algorithm in order to obtain a better resource exploitation by the terminals.
- the invention enables the improvement of the algo- rithms, which are used to allocate the available radio resources in a radio communication network to the users, by measuring how much of the radio resources allocated to a user are actually used, in other words, how much of these resources are wasted. By repeating this measurements, the end result should be a radio network, where the transmission capacity is used efficiently to serve the maximum number of subscribers simultaneously.
Abstract
Description
Claims
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/506,783 US20050124350A1 (en) | 2002-03-12 | 2002-03-12 | Radio resource allocation in a radio communication network |
PCT/CH2002/000148 WO2003077579A1 (en) | 2002-03-12 | 2002-03-12 | Radio resource allocation in a radio communication network |
JP2003575650A JP2005520420A (en) | 2002-03-12 | 2002-03-12 | Wireless resource allocation in wireless communication networks |
EP02701148A EP1483927B1 (en) | 2002-03-12 | 2002-03-12 | Radio resource allocation in a radio communication network |
CA002475536A CA2475536C (en) | 2002-03-12 | 2002-03-12 | Radio resource allocation in a radio communication network |
AT02701148T ATE383046T1 (en) | 2002-03-12 | 2002-03-12 | RADIO RESOURCE ALLOCATION IN A RADIO TRANSMISSION NETWORK |
ES02701148T ES2299554T3 (en) | 2002-03-12 | 2002-03-12 | ALLOCATION OF RADIOCOMMUNICATION CAPACITY RESERVATIONS WITHIN A RADIOCOMMUNICATION NETWORK. |
AU2002234479A AU2002234479A1 (en) | 2002-03-12 | 2002-03-12 | Radio resource allocation in a radio communication network |
DE60224453T DE60224453T2 (en) | 2002-03-12 | 2002-03-12 | RADIO COMMUNICATION IN A RADIO TRANSMISSION NETWORK |
NO20044298A NO326956B1 (en) | 2002-03-12 | 2004-10-11 | Radio resource allocation in a radio communication network |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CH2002/000148 WO2003077579A1 (en) | 2002-03-12 | 2002-03-12 | Radio resource allocation in a radio communication network |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003077579A1 true WO2003077579A1 (en) | 2003-09-18 |
Family
ID=27792850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH2002/000148 WO2003077579A1 (en) | 2002-03-12 | 2002-03-12 | Radio resource allocation in a radio communication network |
Country Status (10)
Country | Link |
---|---|
US (1) | US20050124350A1 (en) |
EP (1) | EP1483927B1 (en) |
JP (1) | JP2005520420A (en) |
AT (1) | ATE383046T1 (en) |
AU (1) | AU2002234479A1 (en) |
CA (1) | CA2475536C (en) |
DE (1) | DE60224453T2 (en) |
ES (1) | ES2299554T3 (en) |
NO (1) | NO326956B1 (en) |
WO (1) | WO2003077579A1 (en) |
Cited By (10)
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WO2005079094A1 (en) * | 2004-02-12 | 2005-08-25 | Nokia Corporation | Method, system, apparatus and computer program for allocating radio resources in tdma cellular telecommunications system |
WO2007064292A1 (en) * | 2005-12-02 | 2007-06-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Flow control for low bitrate users on high speed downlink |
WO2008115003A3 (en) * | 2007-03-19 | 2010-11-11 | Lg Electronics Inc. | A resource allocation method and a method for transmitting/receiving resource allocation information in mobile communication system |
US7953061B2 (en) | 2006-10-02 | 2011-05-31 | Lg Electronics Inc. | Method for transmitting control signal using efficient multiplexing |
US7953169B2 (en) | 2007-06-13 | 2011-05-31 | Lg Electronics Inc. | Transmitting spread signal in communication system |
US8009720B2 (en) | 2007-06-13 | 2011-08-30 | Lg Electronics, Inc. | Transmitting spread signal in communication system |
US8009760B2 (en) | 2007-06-21 | 2011-08-30 | Lg Electronics Inc. | Method for receiving control information in orthogonal frequency division multiplexing system of mobile communication system |
US8027297B2 (en) | 2006-10-02 | 2011-09-27 | Lg Electronics Inc. | Method for transmitting downlink control signal |
US8116277B2 (en) | 2007-03-19 | 2012-02-14 | Lg Electronics Inc. | Method for receiving ACK/NACK signal in mobile communication system |
RU2454814C2 (en) * | 2007-03-19 | 2012-06-27 | Эл Джи Электроникс Инк. | Method to dedicate resources and method to send/receive information on dedication of resources in mobile communication system |
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US7684806B2 (en) * | 2005-11-21 | 2010-03-23 | Intel Corporation | Device, system and method of point to multipoint communication |
US8462727B2 (en) * | 2006-03-10 | 2013-06-11 | Motorola Mobility Llc | Method and system for streamlined call setup |
US8270990B2 (en) * | 2009-12-18 | 2012-09-18 | Hewlett-Packard Development Company, L.P. | Techniques to provide enhanced message management services |
CN103369684B (en) * | 2013-07-18 | 2016-06-01 | 北京北方烽火科技有限公司 | A kind of resource regulating method based on carrier aggregation and device |
CN105007631B (en) * | 2015-08-05 | 2018-06-26 | 山东大学 | The federated resource distribution method that guaranteed qos require in a kind of cooperative cognitive network |
US10957445B2 (en) | 2017-10-05 | 2021-03-23 | Hill-Rom Services, Inc. | Caregiver and staff information system |
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2002
- 2002-03-12 DE DE60224453T patent/DE60224453T2/en not_active Expired - Lifetime
- 2002-03-12 ES ES02701148T patent/ES2299554T3/en not_active Expired - Lifetime
- 2002-03-12 EP EP02701148A patent/EP1483927B1/en not_active Expired - Lifetime
- 2002-03-12 WO PCT/CH2002/000148 patent/WO2003077579A1/en active IP Right Grant
- 2002-03-12 US US10/506,783 patent/US20050124350A1/en not_active Abandoned
- 2002-03-12 AU AU2002234479A patent/AU2002234479A1/en not_active Abandoned
- 2002-03-12 AT AT02701148T patent/ATE383046T1/en not_active IP Right Cessation
- 2002-03-12 JP JP2003575650A patent/JP2005520420A/en not_active Ceased
- 2002-03-12 CA CA002475536A patent/CA2475536C/en not_active Expired - Fee Related
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- 2004-10-11 NO NO20044298A patent/NO326956B1/en not_active IP Right Cessation
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WO2005079094A1 (en) * | 2004-02-12 | 2005-08-25 | Nokia Corporation | Method, system, apparatus and computer program for allocating radio resources in tdma cellular telecommunications system |
WO2007064292A1 (en) * | 2005-12-02 | 2007-06-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Flow control for low bitrate users on high speed downlink |
US7564788B2 (en) | 2005-12-02 | 2009-07-21 | Telefonaktiebolaget Lm Ericsson (Publ) | Flow control for low bitrate users on high-speed downlink |
US8027297B2 (en) | 2006-10-02 | 2011-09-27 | Lg Electronics Inc. | Method for transmitting downlink control signal |
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Also Published As
Publication number | Publication date |
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ATE383046T1 (en) | 2008-01-15 |
EP1483927B1 (en) | 2008-01-02 |
CA2475536A1 (en) | 2003-09-18 |
ES2299554T3 (en) | 2008-06-01 |
NO326956B1 (en) | 2009-03-23 |
JP2005520420A (en) | 2005-07-07 |
US20050124350A1 (en) | 2005-06-09 |
DE60224453D1 (en) | 2008-02-14 |
DE60224453T2 (en) | 2008-12-18 |
EP1483927A1 (en) | 2004-12-08 |
AU2002234479A1 (en) | 2003-09-22 |
NO20044298L (en) | 2004-10-11 |
CA2475536C (en) | 2009-11-03 |
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