WO2015176762A1

WO2015176762A1 - Radio communication device and method therein for handling operation of an algorithm

Info

Publication number: WO2015176762A1
Application number: PCT/EP2014/060590
Authority: WO
Inventors: Marko Leinonen; Kauko Heinikoski
Original assignee: Telefonaktiebolaget L M Ericsson (Publ)
Priority date: 2014-05-22
Filing date: 2014-05-22
Publication date: 2015-11-26

Abstract

A radio communication apparatus (200, 300) and a method (100) performed thereby for handling an operation of an algorithm, which algorithm when run affects radio performance of the radio communication device are provided. The radio communication apparatus (200, 300) is operable in a wireless communication network. The method comprises determining (110) at least one of available power for the radio communication device and/or a current radio characteristic of the radio communication device; and comparing (120) each one out of the determined at least one of the available power and/or radio characteristic to a respective criterion. The method (100) further comprises activating (130) or deactivating (140) the algorithm based on the comparison.

Description

RADIO COMMUNICATION DEVICE AND METHOD THEREIN FOR HANDLING

OPERATION OF AN ALGORITHM

Technical field

[0001] The present disclosure relates to radio communication and in particular to a radio communication device and method performed by the radio

communication device for handling operation of an algorithm.

Background

[0002] Radio communication networks support more and more different services and are becoming more and more advanced. Further, the number of users and the different services of the radio communication networks are also increasing. Some radio communication devices are powered by batteries, which needs to be charged regularly. Thus in order to prolong the time between charging intervals, it is desirable that the radio communication device is as power efficient as possible.

[0003] Same radio communication devices are powered by external power sources. Thus the available power may not be as limited and/or critical as for a battery powered radio communication device. However, a large amount of radio communication devices may together consume a large amount of power and even a relatively small reduction in power usage of each radio communication device may result in a relatively large overall power reduction. Thus it is desirable also to make externally powered radio communication devices as power efficient as possible.

[0004] Still further, some radio communication devices may be externally powered but still have a limited amount of available power making it necessary to be as power efficient as possible.

Summary

[0005] The object is to obviate at least some of the problems outlined above. In particular, it is an object to provide a radio communication apparatus and a method performed thereby for handling an operation of an algorithm, which algorithm when run affects radio performance of the radio communication device, wherein power consumption of the radio communication device may be reduced. These objects and others may be obtained by providing a radio communication apparatus and a method performed by a radio communication apparatus according to the independent claims attached below.

[0006] According to an aspect, a method performed by a radio communication device for handling an operation of an algorithm, which algorithm when run affects radio performance of the radio communication device, is provided. The radio communication is operable in a wireless communication network. The method comprises determining at least one of available power for the radio communication device and/or a current radio characteristic of the radio communication device; and comparing each one out of the determined at least one of the available power and/or radio characteristic to a respective criterion. The method further comprises activating or deactivating the algorithm based on the comparison.

[0007] According to an aspect, a radio communication device adapted for handling an operation of an algorithm, which algorithm when run affects radio performance of the radio communication device, is provided. The radio

communication is operable in a wireless communication network. The radio communication device comprises a processor and memory. The memory comprises instructions which when executed by the processor causes the radio communication device to determine at least one of available power for the radio communication device and/or a current radio characteristic of the radio

communication device; to compare each one out of the determined at least one of the available power and/or radio characteristic to a respective criterion; and to activate or deactivate the algorithm based on the comparison.

[0008] According to an aspect, a radio communication device for handling an operation of an algorithm, which algorithm when run affects radio performance of the radio communication device, is provided. The radio communication is operable in a wireless communication network. The radio communication device comprises a determining unit for determining at least one of available power for the radio communication device and/or a current radio characteristic of the radio communication device; a comparing unit for comparing each one out of the determined at least one of the available power and/or radio characteristic to a respective criterion; and an activating unit for activating or deactivating the algorithm based on the comparison.

[0009] The method performed by the radio communication device and the radio communication device itself may have several advantages. One possible advantage is that power consumption may be reduced, both temporarily and over time. Another possible advantage is that the power consumption reduction may be achieved without seriously degrading the performance of the radio communication device. A further possible advantage is that in case of low available power, a possible shut down of the radio communication device may be avoided by deactivating the algorithm, thereby reducing the power consumption of the radio communication device.

Brief description of drawings

[00010] Embodiments will now be described in more detail in relation to the accompanying drawings, in which:

[0001 1 ] Figure 1 a is a flowchart of a method for handling an operation of an algorithm according to an exemplifying embodiment.

[00012] Figure 1 b is a flowchart of a method for handling an operation of an algorithm according to still an exemplifying embodiment.

[00013] Figure 1 c is an illustration of exemplifying thresholds for activating and deactivating the algorithm with regards to received signal strength.

[00014] Figure 1d is an illustration of an exemplifying threshold for activating and deactivating the algorithm with regards to transmitted signal strength.

[00015] Figure 1 e is an illustration of an exemplifying threshold for activating and deactivating the algorithm with regards to noise signal strength.

[00016] Figure 1f is a flowchart of a method for handling an operation of an algorithm according to yet an exemplifying embodiment. [00017] Figure 1g is an illustration of exemplifying thresholds for activating and deactivating the algorithm with regards to reception and transmission frequency bands.

[00018] Figure 2a is a block diagram of a radio communication device adapted for handling an operation of an algorithm according to an exemplifying

embodiment.

[00019] Figure 2b is a block diagram of a radio communication device adapted for handling an operation of an algorithm according to still an exemplifying embodiment.

[00020] Figure 2c is a block diagram of a radio communication device adapted for handling an operation of an algorithm according to yet an exemplifying

embodiment.

[00021 ] Figure 2d is a block diagram of a part of a radio communication device adapted for handling an operation of an algorithm according to an exemplifying embodiment.

[00022] Figure 2e is a block diagram of a part of a radio communication device adapted for handling an operation of an algorithm according to another

exemplifying embodiment.

[00023] Figure 2f is a block diagram of a part of a radio communication device adapted for handling an operation of an algorithm according to a further exemplifying embodiment.

[00024] Figure 2g is a block diagram of a part of a radio communication device adapted for handling an operation of an algorithm according to still an exemplifying embodiment.

[00025] Figure 2h is a block diagram of a part of a radio communication device adapted for handling an operation of an algorithm according to yet an exemplifying embodiment. [00026] Figure 2i is an illustration of a Radio Access Network, RAN, and a mobile station communicating with a base station.

[00027] Figure 3 is a block diagram of a radio communication device for handling an operation of an algorithm according to an exemplifying embodiment.

[00028] Figure 4 is a block diagram of an arrangement in a radio communication device adapted for handling an operation of an algorithm according to an exemplifying embodiment.

Detailed description

[00029] Briefly described, a radio communication device and a method performed by the radio communication device for handling an operation of an algorithm are provided. Depending on different circumstances, e.g. available power and/or radio characteristics of the radio communication device, the algorithm may be activated or deactivated.

[00030] The increasing demand for radio resources and the demand for coverage at different locations have influenced the development of low power radio base stations, RBSs. A radio communication network may comprise a combination of so-called macro RBSs together with low power RBSs. Such radio communication networks are sometimes referred to as hetnets, which is short for heterogeneous networks. The low power RBSs generally transmit with significantly lower transmission power than macro RBSs.

[00031] A problem in low power RBSs is that used Radio Frequency, RF, components need to be miniaturised and those will not have the same

performance as those used in macro RBSs. Also RF components need to be cost effective and power efficient which sets additional performance challenges. In order to use reduced performance components and to maintain good radio performance an additional algorithm may be needed. The additional algorithm may be cross talk algorithm to reduce receiver interference or other algorithm to affect radio performance. Additionally small components are cheaper than macro product which is an essential for high volume products. [00032] As stated above, a radio communication device may be powered internally, e.g. by means of a battery, or externally. Irrespective of the power source, it may be important to reduce the consumption of energy to a minimum, however this is even more important for e.g. battery powered radio communication devices and for radio communication devices having very limited amount of available power.

[00033] Low power RBSs may be powered with Power over Ethernet, PoE, and this may set a strict upper bound for the power consumption of the low power RBS. The PoE can deliver 12.5W and PoE+ can deliver 25.5W of power for RBSs in the Ethernet connector. This power should be regulated and down converted to usable operational voltages and this will even further lower real available power for all RBS functionalities including Ethernet backhauling, WiFi radio and baseband operations, 3^rd Generation Partnership Project, 3GPP, baseband operations, 3GPP radio cards, synchronisations, clock generations to mention just few.

[00034] Thus there are many functions and/or algorithms that run continuously and which thus may consume power.

[00035] Embodiments of a method performed by a radio communication device, for handling operation of an algorithm, which algorithm when run affects radio performance of the radio communication device will now be described with reference to figures 1a-1 c. The radio communication is operable in a wireless communication network. Figure 1a illustrates the method 100 comprising determining 1 10 at least one of available power for the radio communication device and/or a current radio characteristic of the radio communication device; and comparing 120 each one out of the determined at least one of the available power and/or radio characteristic to a respective criterion. The method 100 further comprises activating 130 or deactivating 140 the algorithm based on the comparison.

[00036] The radio communication device may be an RBS, low power RBS, base station, Node B, evolved Node B, User Equipment, UE, mobile station, mobile telephone, smartphone, personal digital assistant, laptop or any other device comprising means for radio communication. The radio communication device determines at least one of available power for the radio communication device and/or a current radio characteristic of the radio communication device. Both the available power and the radio characteristics may vary dynamically. In other words, the radio characteristics may vary being everything between good and bad, and the available power may vary being everything between maximum and minimum.

[00037] There is a respective criterion for the available power and radio characteristics. Thus the radio communication device compares the available power to a power criterion and/or the radio characteristic to a radio characteristic criterion. It shall be pointed out that there may be more than one radio

characteristic and each radio characteristic may have its own criterion. In other words, the radio communication device may determine available power and/or one, or more, radio characteristic and then compare it or them to a respective criterion.

[00038] Depending on the result of the comparison, the radio communication device may activate or deactivate the algorithm.

[00039] Merely as an example, if there is relatively low available power in relation to a maximum level, the radio communication device may deactivate the algorithm. On the other hand, if there is relatively much available power in relation to a maximum level, the radio communication device may activate the algorithm.

Likewise, if the one or more radio characteristic is relatively unfavourable or bad, the radio communication device may activate the algorithm; or on the other hand, if the one or more radio characteristic is relatively good, the radio communication device may deactivate the algorithm.

[00040] The algorithm typically runs on hardware such that deactivating the algorithm may incur shutting down at least a part of the hardware. In this manner, the power consumption may be reduced when the algorithm is deactivated. [00041 ] Merely as an example, assume the radio communication device determines a certain level of available power and that the comparison with a power criterion indicates that the available power is below a critical level. If so, the radio communication device may deactivate the algorithm, thereby reducing power consumption and possibly saving enough power in order to avoid the radio communication shutting down.

[00042] The method performed by the radio communication device may have several advantages. One possible advantage is that power consumption may be reduced, both temporarily and over time. Another possible advantage is that the power consumption reduction may be achieved without seriously degrading the performance of the radio communication device. A further possible advantage is that in case of low available power, a possible shut down of the radio

communication device may be avoided by deactivating the algorithm, thereby reducing the power consumption of the radio communication device.

[00043] The algorithm may be a cross talk algorithm.

[00044] There are many examples of different algorithms that are typically running as long as the radio communication device is power on and active. The cross talk algorithm is one example. By shutting it down, e.g. in case the available power is below a critical level, the power consumption may be reduced, thereby avoiding sudden shutdown of the radio communication device. The user of the radio communication device or users of other radio communication devices communicating with the radio communication device may experience a

degradation of quality, e.g. of a voice call, due to the deactivation of the cross talk algorithm, however the alternative may be to risk the radio communication device shutting down wherein any ongoing communication is lost or dropped. Thus it is preferable to at least have the radio communication device running even if some users may experience a degradation of quality of service.

[00045] Merely as an example, the radio communication device is a UE. Then the user of the UE may experience a degradation of quality of service, but at least the UE is still operable. In another example, the radio communication device is an RBS or a low power RBS; then all radio communication device (e.g. UEs) connected to the radio communication device will lose their connections in case the radio communication device shuts down. Thus it is preferable that possibly some of the users of the UEs may experience a degradation of quality of service.

[00046] Further, in case the radio communication device determines at least one radio characteristic of the radio communication device, and the comparison of the radio characteristic to the corresponding thresholds results in the determined radio characteristic being above the threshold, indicating that the radio characteristic is relatively good, then deactivation of the algorithm may not severely affect the experienced quality of service for one or users. If the radio characteristic is relatively good, the algorithm may possibly not further improve the experienced quality of service and thus deactivating the algorithm may reduce power without significantly affecting the performance of the radio communication device.

[00047] The radio communication device may be powered in different ways, either by an external power source or an internal power source or a combination thereof. For example, the power source may be at least one of power supply power / voltage / current, power domain, power island or regulated operational power for radio communication device.

[00048] As described above, the radio communication device may be powered by an internal battery, external power source such as a battery, PoE, PoE+, power island and so on. The power may be measured as at least one of voltage or current from the power source.

[00049] The method may further comprise determining 150 if the radio

communication device is in a sleep mode of operation, wherein if so, the method comprising deactivating 140 the algorithm. This is illustrated in figure 1 b.

[00050] The radio communication device may have different modes of operation, e.g. active, idle, or sleep mode. Active mode may be when the radio

communication is in use, e.g. having an ongoing connection or service running with another radio communication device. Idle or sleep mode may be when the radio communication device is powered on but not actively in use. If the radio communication device is not in use, i.e. in the sleep (or idle) mode of operation then there may be no need for having the algorithm active, especially if the algorithm is related to enhancing radio performance, and thus the algorithm is deactivated.

[00051 ] Still further, the method may comprise determining 155 if a receiver of the radio communication device is in an idle mode or in an inactive mode of operation, wherein if so, the method comprises deactivating 140 the algorithm. This is also illustrated in figure 1 b.

[00052] It may also be that instead of the whole radio communication device being in sleep or idle mode, parts of the radio communication device may be in idle mode. If the receiver of the radio communication device is in idle (or sleep) mode, then the radio communication device is not actively receiving

communication and then the algorithm may be deactivated, especially if the algorithm is related to enhancing radio performance.

[00053] By the receiver of the radio communication device is meant hardware associated with a receiving unit of the radio communication device, e.g. signal processing unit, decoding unit and so on.

[00054] An example of current radio characteristic is a received signal strength of a received signal, wherein the criterion is at least one received signal strength threshold, wherein the algorithm is activated if the received signal strength is above the received signal strength threshold or deactivated if the received signal strength is below the received signal strength threshold.

[00055] The radio communication device may send and receive signals and hence, one radio characteristic is received signal strength. In this example, the algorithm is deactivated if the received signal strength is below the received signal strength threshold. If the received signal strength is below the received signal strength threshold, the received signal may be too weak to be received properly, and thus the algorithm may not be needed. [00056] According to an embodiment, illustrated in figure 1c, wherein the current radio characteristic is received signal strength of a received signal, the criterion is a first and a second received signal strength threshold, wherein the first received signal strength threshold is lower than the second received signal strength threshold, wherein the algorithm is activated if the received signal strength is between the first and the second threshold, or deactivated if the received signal strength is below the first received signal strength threshold or above the second received signal strength threshold.

[00057] In this embodiment, the cross talk algorithm is only activated if the between the two received signal strength thresholds. If the received signal strength is below the first received signal strength threshold, the received signal may be too weak to be received properly, and thus the algorithm may not be needed. If the received signal strength is above the second received signal strength threshold, the received signal may be so strong that even after e.g. the cross talk algorithm, the received signal quality cannot be improved. Then the algorithm is not needed and may be deactivated in order to reduce power consumption. However, if the if received signal strength is the between the two received signal strength thresholds, then the algorithm, e.g. the cross talk algorithm, may improve the received signal quality and is thus activated.

[00058] In this embodiment and the example above, deactivating the algorithm may not even affect the experienced quality of service of any user involved since the algorithm may not make a difference, or merely a very small difference, to the received signal quality that it may not be noticeable to the user or users.

[00059] Another example of the current radio characteristic is a transmitted signal strength of a transmitted signal, which is illustrated in figure 1d, wherein the criterion is at least one transmitted signal strength threshold, wherein the algorithm is activated if the transmitted signal strength is above the transmitted signal strength threshold or deactivated if the transmitted signal strength is below the transmitted signal strength threshold. [00060] The transmission power level information, i.e. the strength of the transmitted signal, may be determined by radio circuitries based on measurement results or alternatively based on transmission power level control signal from a control unit or from other radio unit. If the transmission signal(s) power level(s) are higher than at least one transmitted signal strength threshold value then the crosstalk algorithm may be activated.

[00061 ] If the strength of the transmitted signal is above the transmitted signal strength threshold then the transmitted signal may cause internal interference within the radio communication device and thus the cross talk algorithm may reduce the interference to a received signal caused by the transmitted signal. Correspondingly, when the strength of the transmitted signal is below the transmitted signal strength threshold then the transmitted signal may be less likely to cause internal interference within the radio communication device and thus the cross talk algorithm may be deactivated.

[00062] Still an example of the current radio characteristic is noise level of a received signal, illustrated in figure 1 e, wherein the criterion is at least one noise level threshold, wherein the algorithm is activated if the noise level is above the noise level threshold or deactivated if the received noise level is below the noise level threshold.

[00063] If the noise level is above the noise level threshold it means that there is relatively much noise. Thus the algorithm, e.g. the cross talk algorithm, may help to reduce the noise and thus improve the quality of a received signal, hence the algorithm is activated. On the other hand, if the noise level, or wideband noise level, is below the threshold, the quality of the received signal may already be sufficient and the algorithm may not significantly further improve the signal quality and hence the algorithm may be deactivated.

[00064] According to an embodiment, illustrated in figure 1f, the method 100 further comprises determining 160 that a transmission signal path or a filtering characteristics has changed, determining 1 10 anew at least one current radio characteristic of the radio communication device, comparing 120 the determined characteristic to at least one corresponding criterion, and activating 130 or deactivating 140 the algorithm based on the comparison.

[00065] There may be different things or circumstances that affect the

transmission signal path or the filtering characteristics. The change may be caused by changing the radio frequency filter from one filter to second filter with different filtering attenuations. Alternatively the change of filtering characteristics may be done by tuning the frequency response of the filter by adjusting at least one parameter of the filter. Adjustment may be done for example by applying a control signal to control or alter a value of electrical component such as PIN diode or Digitally Tuned Capacitor, DTC. Alternatively, filtering characteristics of a digitally implemented filter may be changed e.g. by applying new tap coefficient values to a digital Finite Impulse Response, FIR, filter. If the filtering characteristics of the transmission signal path are changed then the cross-talk algorithm may be activated.

[00066] The change of transmission signal path or in the filtering characteristics may affect e.g. the radio performance of the radio communication device and/or the power consumption of the radio communication device if additional or different hardware is used than before the change. Hence the radio communication device may anew determine at least one current radio characteristic of the radio communication device, compare the determined characteristic to at least one corresponding criterion, and activate or deactivate the algorithm based on the comparison.

[00067] Another example of the current radio characteristic is operational frequency of transmission and/or reception of the radio communication device, illustrated in figure 1 g, wherein the criterion is at least a first, second, third and fourth operational frequency threshold, wherein the algorithm is activated if the operational reception frequency is below the 1 ^st operational frequency threshold or above the 2^nd operational frequency threshold value or alternatively if the operational transmission frequency is below the 3^rd operational frequency threshold or above the 4^th operational frequency threshold value or deactivated if the operation reception frequency is in between 1 ^st and 2^nd operational frequency thresholds or the operational transmission frequency is in between 3 and 4 operational frequency threshold.

[00068] The separation of the transmitted signal and received signal may be constant, but it may be variable. Thus the allocation of the reception frequency band and the transmission frequency band may be changed during the operation and thus the threshold when the cross talk algorithm activation maybe needed to be updated during the operation of the radio communication device. The transmission or the reception frequency band allocation may trigger the activation of the cross talk algorithm. If the frequency of the reception is between threshold 1 and 2, then the cross talk algorithm maybe deactivated. Alternatively if the frequency of the transmission is between threshold 3 and 4, then the cross talk algorithm maybe deactivated.

[00069] The reason to activate cross talk algorithm between threshold 2 and the higher band edge is that it is assumed that the receiver is most sensitive for interference from the transmitted signal. The reason to activate cross talk algorithm between threshold 3 and the lower band edge is that it is assumed that the receiver is most sensitive for interference from the transmitted signal due to close frequency allocation. In these cases a fixed or reasonably fixed duplex distance (a frequency separation between transmission and reception signals) is assumed.

[00070] Yet another example of the current radio characteristic is a frequency separation between a reception band of a 1 ^st radio communication system and a transmission band of the 1 ^st radio communication system or a transmission band of a 2^nd radio communication system, wherein the criterion is at least a frequency separation threshold, wherein the algorithm is activated if the frequency separation is above the frequency separation threshold or deactivated if the frequency separation is below the frequency separation threshold.

[00071 ] Generally, there are several different operators and/or radio

communication systems. Different communication systems generally use different radio communication technology on separate frequency bands, e.g. LTE and WiFi operate in different frequency bands and have different radio communication technology. Depending on overlapping communication networks employing the same or different radio communication technology, they may cause more or less interference to each other. In other words, the band gap frequency allocation separation, e.g. band gap between one 3GPP frequency band or band gap between Band 7 and 2.4GHz WiFi.

[00072] According to an embodiment, the radio communication device has at least a first and a second antenna radiator, wherein the current radio characteristic is antenna isolation level between the antenna radiators, wherein the criterion is at least an antenna isolation level threshold, wherein the algorithm is activated if the antenna isolation level is below the isolation level threshold or deactivated if the antenna isolation level is above the isolation level threshold.

[00073] For example, there may be an external antenna or an attachable antenna construction is attached to the radio communication device. It may be

advantageous to use antenna isolation between a one antenna radiator and a second antenna radiator to make some filtering between the transmission signal and the reception signal. The antenna isolation may be implemented with a physical distance between the antenna elements or with orientation of the elements or other means. When the antennas are operating in a near field operation then the physical distance may not the only way to increase separation or isolation between antennas. If an antenna construction which has higher or better isolation between a reception and a transmission signals (including all frequency components; noise, interference and spurious included), is attached to a radio communication device, then the algorithm, e.g. the cross talk algorithm, may be deactivated. This is because a high or good isolation should inhibit or reduce interference within the radio communication device. This includes both dual band radiator isolation and separate receiving and transmitting antennas. The antenna radiators may be separate units or integrated.

[00074] According to yet an embodiment, the radio communication device has at least a first and a second radio units, wherein the current radio characteristic is at least one of an isolation level between the radio units, an isolation level of the antennas associated with radio units or an isolation level from a radio card to an antenna associated to other radio unit, wherein the criterion is at least an isolation level threshold, wherein the algorithm is activated if the isolation level is below the isolation level threshold or deactivated if the isolation level is above the isolation level threshold.

[00075] One example is that a first radio card supports 3GPP band 7 and a second support WLAN at 2.4GHz band or both radio cards supports band 7 with both antennas or alternatively radio unit 1 support one radio frequencies which partly overlaps the operational frequencies the radio unit 2.

[00076] Also in this example, if the isolation level (s) is/are of a certain level, i.e. equal or above the isolation level threshold, the algorithm, e.g. the cross talk algorithm, may not be needed or significantly improve signal quality and may consequently be deactivated.

[00077] The isolation level of the between different radio units, antennas and other parts may be measured during operation at predefined time(s).

[00078] The respective threshold values mentioned above may be changed or altered individually prior to or during the operation of the radio communication device. The initial threshold values may be defined during the product

development phase of the radio communication device and those may be loaded or other means to store into a memory of the radio communication device. The different threshold values and the instructions and methods to activate or deactivate the algorithm may also be stored into the memory, which may be e.g. a Random Access Memory, RAM, or Read Only Memory, ROM. A control unit of the radio communication device may be a digital processor unit which may be integrated into the same physical device where the algorithm is physically implemented. The physical implementation of the control unit and algorithm may be a Command/Central Processor Unit, CPU, Field Programmable Gate Array, FPGA, structured Application Specific Integrated Circuit, ASIC, or other means. [00079] Embodiments herein also relate to a radio communication device adapted for handling operation of an algorithm, which algorithm when run affects radio performance of the radio communication device, wherein the radio communication device is operable in a wireless communication network. The radio communication device has the same technical features, objects and advantages as the method performed by the radio communication device. The radio

communication device will therefore only be described in brief in order to avoid unnecessary repetition.

[00080] Figure 2a illustrates the radio communication device 200 comprising a processor 221 and memory 222, the memory comprising instructions which when executed by the processor 221 causes the radio communication device 200 to determine at least one of available power for the radio communication device and/or a current radio characteristic of the radio communication device; to compare each one out of the determined at least one of the available power and/or radio characteristic to a respective criterion; and to activate or deactivate the algorithm based on the comparison.

[00081] Figure 2a further illustrates the radio communication device comprising further functionality 240. Further functionality 240 may be hardware and/or software of the radio communication device for performing other functions and operations not disclosed herein. The further functionality 240 may also be hardware and/or software illustrated in 2b-2h.

[00082] Further, figure 2b is an exemplifying illustration of the radio

communication device 200. Figure 2b illustrates the radio communication device 200 comprising radio circuitries 245 which may correspond to the communication unit 230 of figure 2a. The radio circuitries 245 are further illustrated comprising a receiver 245a and a transmitter 245b. Further, figure 2b illustrates the radio communication device comprising a memory unit 242 which may be the same as the memory 210 or 222 of figure 2a, but it may also be a different memory unit. The radio communication device 200 according to figure 2b further has a control unit 244 which may correspond to the processor 221 of figure 2a or may be a different control unit. Still further, figure 2b illustrates the radio communication device 200 comprising an algorithm 243, which is controlled by the control unit 244 so that the control unit 244 may activate or deactivate the algorithm 243. The algorithm 243 is illustrated as "connected to" the radio circuitry 245, illustrating that the algorithm may affect radio performance of the radio communication device 200. The radio communication device 200 is further illustrated comprising an information source 241 , illustrating that the radio communication device may determine e.g. at least one of available power for the radio communication device and/or a current radio characteristic of the radio communication device 200.

[00083] Figure 2c is a block diagram of an exemplifying illustration of the radio communication device 200 comprising the control unit 244, algorithm 243 as in figure 2b. Figure 2c illustrated the radio communication device further comprising a voltage regulation and conversion unit 246 for regulating and converting the voltage to suit the radio communication device. The input power may come from an internal power source or an external power source as described above. The control unit 244 may, e.g. by means of the voltage regulation and conversion unit 246, determine available power for the radio communication device 200. This may e.g. be done during a handshaking procedure of PoE power-up negotiation. The control unit may further determine a currently used amount of current or power and thus deduce how much of available power is currently consumed by the radio communication device.

[00084] The algorithm, e.g. the cross talk algorithm, may use additional receiver/observation path to detect and convey signal to the algorithm which is implemented in a digital domain. Once the algorithm is deactivated, this additional signal path and digital correction algorithm may be shut down thus saving power. Power saving depends on the implementation.

[00085] The control unit 244 may support, or execute, an Adaptive Usage Algorithm, AUA, which may control the activation and deactivation of the algorithm 243.

[00086] The radio device has the same possible advantages as the method performed by the radio communication device. One possible advantage is that power consumption may be reduced, both temporarily and over time. Another possible advantage is that the power consumption reduction may be achieved without seriously degrading the performance of the radio communication device. A further possible advantage is that in case of low available power, a possible shut down of the radio communication device may be avoided by deactivating the algorithm, thereby reducing the power consumption of the radio communication device.

[00087] The algorithm may be a cross talk algorithm.

[00088] According to an embodiment, the memory 222 further comprises instructions, which when executed by the processor 221 causes the radio communication device 200 to determine if the radio communication device is in a sleep mode of operation, wherein if so, to deactivate the algorithm.

[00089] According to yet an embodiment, the memory 222 further comprises instructions, which when executed by the processor 221 causes the radio communication device 200 to determine if a receiver of the radio communication device is in an idle mode or in an inactive mode of operation, wherein if so, to deactivate the algorithm.

[00090] An example of current radio characteristic is a received signal strength of a received signal, wherein the criterion is at least one received signal strength threshold, wherein the algorithm is activated if the received signal strength is above the received signal strength threshold or deactivated if the received signal strength is below the received signal strength threshold.

[00091 ] According to an embodiment, wherein the current radio characteristic is received signal strength of a received signal, the criterion is a first and a second received signal strength threshold, wherein the first received signal strength threshold is lower than the second received signal strength threshold, wherein the algorithm is activated if the received signal strength is between the first and the second threshold, or deactivated if the received signal strength is below the first received signal strength threshold or above the second received signal strength threshold.

[00092] Another example of the current radio characteristic is a transmitted signal strength of a transmitted signal, wherein the criterion is at least one transmitted signal strength threshold, wherein the algorithm is activated if the transmitted signal strength is above the transmitted signal strength threshold or deactivated if the transmitted signal strength is below the transmitted signal strength threshold.

[00093] Still an example of the current radio characteristic is noise level of a received signal, wherein the criterion is at least one noise level threshold, wherein the algorithm is activated if the noise level is above the noise level threshold or deactivated if the received noise level is below the noise level threshold.

[00094] According to an embodiment, the memory 222 further comprises instructions, which when executed by the processor 221 causes the radio communication device 200 to determine that a transmission signal path or a filtering characteristics has changed, to determine anew at least one current radio characteristic of the radio communication device, to compare the determined characteristic to at least one corresponding criterion, and to activate or deactivate the algorithm based on the comparison.

[00095] Figure 2d is an exemplifying illustration of different signal paths within the radio communication device 200. The control unit of figures 2b and 2c may e.g. control digital parts of a transmitter signal chain and digital filtering 255 and other radio parts of the transmitter and analogue filters 254 of the radio

communication device 200. The radio communication device 200 further comprises digital parts of a receiver signal chain 256 and radio parts of a receiver 257. In unit 253, there are two different transmission paths that may be selected, an upper path and a lower path.

[00096] Figure 2e is an exemplifying illustration how filtering characteristics may change. Box 251 of figure 2d is a filtering unit, or combining component, which is illustrated in more detail in figure 2e. The combining component may be e.g. a duplex filter or diplexer or isolator or Wilkinson divider/combiner.

[00097] Figure 2e illustrates that the combining component 251 is directly or indirectly connected, at one end to an antenna, and at a second end to a transmitter unit and a receiver unit. Thus the combining component 251 may change its filtering characteristics more or less dynamically to supress interference between received signals and transmitted signals. The combining component 251 may not have enough filtering capacity or good enough performance to meet needed radio performance resulting in the algorithm to be activated in order to compensate for any inadequate of the combining component 251 . The combining component 251 is illustrated as being comprised in a combining element 251 -1 , which may be placed with the transmitter and the receiver.

[00098] It may further be possible that the combining element 251 and antenna may be contacted to the transmitter and receiver. This may be the case with an external antenna installation. This new combination may have different filtering characteristics than a combining component before and thus the algorithm may be activated.

[00099] Still an example of the current radio characteristic is operational frequency of transmission and /or reception of the radio communication device, wherein the criterion is at least a first, second, third and fourth operational frequency threshold, wherein the algorithm is activated if the operational reception frequency is below the 1 ^st operational frequency threshold or above the 2^nd operational frequency threshold value or alternatively if the operational transmission frequency is below the 3^rd operational frequency threshold or above the 4^th operational frequency threshold value or deactivated if the operation reception frequency is in between 1 ^st and 2^nd operational frequency thresholds or the operational transmission frequency is in between 3^rd and 4^th operational frequency threshold.

[000100] Yet an example of the current radio characteristic is a frequency separation between a reception band of a 1 ^st radio system and a transmission band of the 1 system or a transmission band of a 2 radio system, wherein the criterion is at least a frequency separation threshold, wherein the algorithm is activated if the frequency separation is above the frequency separation threshold or deactivated if the frequency separation is below the frequency separation threshold.

[000101 ] According to an embodiment, the radio communication device has at least a first and a second antenna radiator, wherein the current radio characteristic is antenna isolation level between the antenna radiators, wherein the criterion is at least an antenna isolation level threshold, wherein the algorithm is activated if the antenna isolation level is below the isolation level threshold or deactivated if the antenna isolation level is above the isolation level threshold.

[000102] Figure 2f is a block diagram of an exemplifying illustration of a combined antenna 260, wherein the combined antenna 260 comprises two antenna radiators 261 and 262, wherein a first radio antenna radiator 261 is connected to a radio part of a transmitter 265 and a second antenna radiator 262 is connected to a radio part of a receiver 266. The curved double-headed arrow between the two antenna radiators 261 and 262 illustrates an antenna isolation between the two antenna radiators.

[000103] The combined antenna 260 is an embodiment of an implementation with two antenna radiators 261 and 262. The antenna radiators 261 and 262 may have multiple antenna resonances and if any of those antenna isolations are below threshold then the algorithm may be activated. Additionally, antenna radiators 261 and 262 may operate on different frequency bands with partly or fully overlapping frequencies.

[000104] According to another embodiment, illustrated in figure 2g, wherein the radio communication device has at least a first and a second radio units 267 and 268, wherein the current radio characteristic is at least one of an isolation level between the radio units, an isolation level of the antennas associated with radio units or an isolation level from a radio card to an antenna associated to other radio unit, wherein the criterion is at least an isolation level threshold, wherein the algorithm is activated if the isolation level is below the isolation level threshold or deactivated if the isolation level is above the isolation level threshold.

[000105] Figure 2h is an illustration of a radio communication device comprising at least a first and a second radio unit 267 and 268, wherein e.g. timing

information and/or current radio characteristics may be exchanged between the radio units. The radio unit may be a radio card inside of the same physical enclosure or radio unit may be a radio unit side of a radio base station or alternatively radio unit may be an integrated radio module or an integrated radio component inside of the same physical enclosure. The isolation between radio units may be isolation between 267 and 268 or from 261 / 262 to 268 or from 262 / 264 to 267. Timing information may be for example transmission and reception periods of TDD radio device. This information may be used to activating or deactivating the algorithm synchronously.

[000106] Isolation between different radio units may e.g. be measured during research and development phase of product development or during normal operation of the radio unit with a test signal transmission from e.g. 267 and receiving the test signal with 268. The test signal may be a dedicated test signal like Continuous Wave, CW, signal or normal operation radio signal transmitted at a pre-defined time.

[000107] It should be noted that radio unit 267 and 268 may support different radio protocols e.g. 267 supports LTE and 268 WiFi.

[000108] Figure 2i is an illustration of a Radio Access Network, RAN, and a mobile station communicating with a base station. According to an embodiment, an Operations and Support System, OSS, or a Base Station Controller, BSC, Radio Network Controller, RNC, Operation and Administration and Maintenance system, OAM, may command the radio communication device to change a radio parameter, e.g. operational frequency, maximum allowed transmission power, current transmission power or other parameters, which will affect the radio characteristics of the radio communication device. The radio communication device may be e.g. an RBS, low power RBS, base station, Node B, evolved Node B, User Equipment, UE, mobile station, mobile telephone, smartphone, personal digital assistant, laptop or any other device comprising means for radio

communication. In figure 2i, the radio communication device is exemplified as being either a base station 200a or a mobile station 200b.

[000109] The OSS may thus command the base station to change one or more radio parameters, and/or the base station may command the mobile station to change transmission power and/or operational frequency.

[0001 10] Embodiments herein also relate to a radio communication device for handling operation of an algorithm, which algorithm when run affects radio performance of the radio communication device, wherein the radio communication device is operable in a wireless communication network. The radio communication device has the same technical features, objects and advantages as the method performed by the radio communication device and the radio communication device described above with reference to figure 2a. The radio communication device will therefore only be described in brief in order to avoid unnecessary repetition.

[0001 1 1 ] Figure 3 illustrates the radio communication device 300 comprising a determining unit 303 for determining at least one of available power for the radio communication device and/or a current radio characteristic of the radio

communication device; a comparing unit 304 for comparing each one out of the determined at least one of the available power and/or radio characteristic to a respective criterion; and an activating unit 305 for activating or deactivating the algorithm based on the comparison.

[0001 12] Figure 3 also illustrates the radio communication device 300 comprising further functionality 309. Further functionality 309 may be hardware and/or software of the radio communication device 300 for performing other functions and operations not disclosed herein.

[0001 13] The radio device has the same possible advantages as the method performed by the radio communication device and the radio communication device described above with reference to figure 2a. One possible advantage is that power consumption may be reduced, both temporarily and over time. Another possible advantage is that the power consumption reduction may be achieved without seriously degrading the performance of the radio communication device. A further possible advantage is that in case of low available power, a possible shut down of the radio communication device may be avoided by deactivating the algorithm, thereby reducing the power consumption of the radio communication device.

[0001 14] In figure 3, the radio communication device 300 is also illustrated comprising a communication unit 301 . Through this unit, the radio communication device 300 is adapted to communicate with other nodes and/or entities in the wireless communication network. The communication unit 301 may comprise more than one receiving arrangement. For example, the communication unit 301 may be connected to both a wire and an antenna, by means of which the radio

communication device 300 is enabled to communicate with other nodes and/or entities in the wireless communication network. Similarly, the communication unit 301 may comprise more than one transmitting arrangement, which in turn are connected to both a wire and an antenna, by means of which the radio

communication device 300 is enabled to communicate with other nodes and/or entities in the wireless communication network. The radio communication device 300 further comprises a memory 302 for storing data. Further, the radio

communication device 300 may comprise a control or processing unit which in turns may be connected to the different units 303-304. It shall be pointed out that this is merely an illustrative example and the radio communication device 300 may comprise more, less or other units or modules which execute the functions of the radio communication device 300 in the same manner as the units illustrated in figure 3.

[0001 15] It should be noted that figure 3 merely illustrates various functional units in the radio communication device 300 in a logical sense. The functions in practice may be implemented using any suitable software and hardware means/circuits etc. Thus, the embodiments are generally not limited to the shown structures of the radio communication device 300 and the functional units. Hence, the previously described exemplary embodiments may be realised in many ways. For example, one embodiment includes a computer-readable medium having instructions stored thereon that are executable by the control or processing unit for executing the method steps performed by the radio communication device 300. The instructions executable by the computing system and stored on the computer-readable medium perform the method steps of the radio communication device 300 as set forth in the claims.

[0001 16] Figure 4 schematically shows an embodiment of an arrangement in a radio communication device 400. Comprised in the arrangement in the radio communication device 400 are here a processing unit 406, e.g. with a Digital Signal Processor, DSP. The processing unit 406 may be a single unit or a plurality of units to perform different actions of procedures described herein. The arrangement in the radio communication device 400 may also comprise an input unit 402 for receiving signals from other entities, and an output unit 404 for providing signal(s) to other entities. The input unit and the output unit may be arranged as an integrated entity or as illustrated in the example of figure 3, as one or more interfaces 301 .

[0001 17] Furthermore, the arrangement in the radio communication device 400 comprises at least one computer program product 408 in the form of a non-volatile memory, e.g. an Electrically Erasable Programmable Read-Only Memory,

EEPROM, a flash memory and a hard drive. The computer program product 408 comprises a computer program 410, which comprises code means, which when executed in the processing unit 406 in the arrangement in the radio

communication device 400 causes the arrangement in the radio communication device 400 to perform the actions e.g. of the procedure described earlier in conjunction with figure 1 a.

[0001 18] The computer program 410 may be configured as a computer program code structured in computer program modules 410a-410e. Hence, in an exemplifying embodiment, the code means in the computer program of the arrangement in the radio communication device 400 comprises a determining unit, or module, for determining at least one of available power for the radio

communication device and/or a current radio characteristic of the radio communication device. The computer program further comprises a comparing unit, or module, for comparing each one out of the determined at least one of the available power and/or radio characteristic to a respective criterion. The computer program further comprises an activating unit, or module, for activating or deactivating the algorithm based on the comparison.

[0001 19] The computer program modules could essentially perform the actions of the flow illustrated in figure 1 a, to emulate the arrangement in the radio

communication device 400. In other words, when the different computer program modules are executed in the processing unit 406, they may correspond to the units 303-305 of figure 3.

[000120] While the embodiments have been described in terms of several embodiments, it is contemplated that alternatives, modifications, permutations and equivalents thereof will become apparent upon reading of the specifications and study of the drawings. It is therefore intended that the following appended claims include such alternatives, modifications, permutations and equivalents as fall within the scope of the embodiments and defined by the pending claims.

Claims

1 . A method (100) performed by a radio communication device, for handling operation of an algorithm, which algorithm when run affects radio performance of the radio communication device, wherein the radio communication device is operable in a wireless communication network, the method comprising:

- determining (1 10) at least one of available power for the radio

communication device and/or a current radio characteristic of the radio communication device,

- comparing (120) each one out of the determined at least one of the

available power and/or radio characteristic to a respective criterion, and

- activating (130) or deactivating (140) the algorithm based on the

comparison.

2. A method (100) according to claim 1 , wherein the algorithm is a cross talk algorithm.

3. A method (100) according to claim 1 or 2, further comprising determining (150) if the radio communication device is in a sleep mode of operation, wherein if so, the method comprising deactivating (140) the algorithm.

4. A method (100) according to any of preceding claims, further comprising determining (155) if a receiver of the radio communication device is in an idle mode or in an inactive mode of operation, wherein if so, the method comprises deactivating (140) the algorithm.

5. A method (100) according to any of preceding claims, wherein the current radio characteristic is a received signal strength of a received signal, wherein the criterion is at least one received signal strength threshold, wherein the algorithm is activated if the received signal strength is above the received signal strength threshold or deactivated if the received signal strength is below the received signal strength threshold.

6. A method (100) according to claim 5, wherein the current radio characteristic is received signal strength of a received signal, wherein the criterion is a first and a second received signal strength threshold, wherein the first received signal strength threshold is lower than the second received signal strength threshold, wherein the algorithm is activated if the received signal strength is between the first and the second threshold, or deactivated if the received signal strength is below the first received signal strength threshold or above the second received signal strength threshold.

7. A method (100) according to any of preceding claims, wherein the current radio characteristic is a transmitted signal strength of a transmitted signal, wherein the criterion is at least one transmitted signal strength threshold, wherein the algorithm is activated if the transmitted signal strength is above the transmitted signal strength threshold or deactivated if the transmitted signal strength is below the transmitted signal strength threshold.

8. A method (100) according to any of preceding claims, wherein the current radio characteristic is noise level of a received signal, wherein the criterion is at least one noise level threshold, wherein the algorithm is activated if the noise level is above the noise level threshold or deactivated if the received noise level is below the noise level threshold.

9. A method (100) according to any of preceding claims, further comprising determining (160) that a transmission signal path or a filtering characteristics has changed, determining (1 10) anew at least one current radio characteristic of the radio communication device, comparing (120) the determined characteristic to at least one corresponding criterion, and activating (130) or deactivating (140) the algorithm based on the comparison.

10. A method (100) according to any of preceding claims, wherein the current radio characteristic is operational frequency of transmission and / or reception of the radio communication device, wherein the criterion is at least a first, second, third and fourth operational frequency threshold, wherein the algorithm is activated if the operational reception frequency is below the 1 ^st operational frequency threshold or above the 2 operational frequency threshold value or alternatively if the operational transmission frequency is below the 3^rd operational frequency threshold or above the 4^th operational frequency threshold value or deactivated if the operation reception frequency is in between 1^st and 2^nd operational frequency thresholds or the operational transmission frequency is in between 3^rd and 4^th operational frequency threshold.

1 1 . A method (100) according to any of preceding claims, wherein the current radio characteristic is a frequency separation between a reception band of a 1 ^st radio system and a transmission band of the 1 ^st system or a transmission band of a 2^nd radio system, wherein the criterion is at least a frequency separation threshold, wherein the algorithm is activated if the frequency separation is above the frequency separation threshold or deactivated if the frequency separation is below the frequency separation threshold.

12. A method (100) according to any of preceding claims, wherein the radio communication device has at least a first and a second antenna radiator, wherein the current radio characteristic is antenna isolation level between the antenna radiators, wherein the criterion is at least an antenna isolation level threshold, wherein the algorithm is activated if the antenna isolation level is below the isolation level threshold or deactivated if the antenna isolation level is above the isolation level threshold.

13. A method (100) according to any of preceding claims, wherein the radio communication device has at least a first and a second radio units, wherein the current radio characteristic is at least one of an isolation level between the radio units, an isolation level of the antennas associated with radio units or an isolation level from a radio card to an antenna associated to other radio unit, wherein the criterion is at least an isolation level threshold, wherein the algorithm is activated if the isolation level is below the isolation level threshold or deactivated if the isolation level is above the isolation level threshold.

14. A radio communication device (200) adapted for handling operation of an algorithm, which algorithm when run affects radio performance of the radio communication device, wherein the radio communication device is operable in a wireless communication network, the radio communication device (200) comprising a processor (221 ) and memory (222), the memory comprising instructions which when executed by the processor (221 ) causes the radio communication device (200) to:

- determine at least one of available power for the radio communication

device and/or a current radio characteristic of the radio communication device,

- compare each one out of the determined at least one of the available power and/or radio characteristic to a respective criterion, and

- activate or deactivate the algorithm based on the comparison.

15. A radio communication device (200) according to claim 14, wherein the algorithm is a cross talk algorithm.

16. A radio communication device (200) according to claim 14 or 15, wherein the memory (222) further comprises instructions, which when executed by the processor (221 ) causes the radio communication device (200) to determine if the radio communication device is in a sleep mode of operation, wherein if so, to deactivate the algorithm.

17. A radio communication device (200) according to any of preceding claims, wherein the memory (222) further comprises instructions, which when executed by the processor (221 ) causes the radio communication device (200) to determine if a receiver of the radio communication device is in an idle mode or in an inactive mode of operation, wherein if so, to deactivate the algorithm.

18. A radio communication device (200) according to any of preceding claims, wherein the current radio characteristic is a received signal strength of a received signal, wherein the criterion is at least one received signal strength threshold, wherein the algorithm is activated if the received signal strength is above the received signal strength threshold or deactivated if the received signal strength is below the received signal strength threshold.

19. A radio communication device (200) according to claim 18, wherein the current radio characteristic is received signal strength of a received signal, wherein the criterion is a first and a second received signal strength threshold, wherein the first received signal strength threshold is lower than the second received signal strength threshold, wherein the algorithm is activated if the received signal strength is between the first and the second threshold, or deactivated if the received signal strength is below the first received signal strength threshold or above the second received signal strength threshold.

20. A radio communication device (200) according to any of preceding claims, wherein the current radio characteristic is a transmitted signal strength of a transmitted signal, wherein the criterion is at least one transmitted signal strength threshold, wherein the algorithm is activated if the transmitted signal strength is above the transmitted signal strength threshold or deactivated if the transmitted signal strength is below the transmitted signal strength threshold.

21 . A radio communication device (200) according to any of preceding claims, wherein the current radio characteristic is noise level of a received signal, wherein the criterion is at least one noise level threshold, wherein the algorithm is activated if the noise level is above the noise level threshold or deactivated if the received noise level is below the noise level threshold.

22. A radio communication device (200) according to any of preceding claims, wherein the memory (222) further comprises instructions, which when executed by the processor (221 ) causes the radio communication device (200) to determine that a transmission signal path or a filtering characteristics has changed, to determine anew at least one current radio characteristic of the radio communication device, to compare the determined characteristic to at least one corresponding criterion, and to activate or deactivate the algorithm based on the comparison.

23. A radio communication device (200) according to any of preceding claims, wherein the current radio characteristic is operational frequency of transmission and /or reception of the radio communication device, wherein the criterion is at least a first, second, third and fourth operational frequency threshold, wherein the algorithm is activated if the operational reception frequency is below the 1 ^st operational frequency threshold or above the 2^nd operational frequency threshold value or alternatively if the operational transmission frequency is below the 3^rd operational frequency threshold or above the 4^th operational frequency threshold value or deactivated if the operation reception frequency is in between 1 ^st and 2^nd operational frequency thresholds or the operational transmission frequency is in between 3^rd and 4^th operational frequency threshold.

24. A radio communication device (200) according to any of preceding claims, wherein the current radio characteristic is a frequency separation between a reception band of a 1 ^st radio system and a transmission band of the 1^st system or a transmission band of a 2^nd radio system, wherein the criterion is at least a frequency separation threshold, wherein the algorithm is activated if the frequency separation is above the frequency separation threshold or deactivated if the frequency separation is below the frequency separation threshold.

25. A radio communication device (200) according to any of preceding claims, wherein the radio communication device has at least a first and a second antenna radiator, wherein the current radio characteristic is antenna isolation level between the antenna radiators, wherein the criterion is at least an antenna isolation level threshold, wherein the algorithm is activated if the antenna isolation level is below the isolation level threshold or deactivated if the antenna isolation level is above the isolation level threshold.

26. A radio communication device (200) according to any of preceding claims, wherein the radio communication device has at least a first and a second radio units, wherein the current radio characteristic is at least one of an isolation level between the radio units, an isolation level of the antennas associated with radio units or an isolation level from a radio card to an antenna associated to other radio unit, wherein the criterion is at least an isolation level threshold, wherein the algorithm is activated if the isolation level is below the isolation level threshold or deactivated if the isolation level is above the isolation level threshold.

27. A radio communication device (300) for handling operation of an algorithm, which algorithm when run affects radio performance of the radio communication device, wherein the radio communication device is operable in a wireless communication network, the radio communication device (300) comprising:

- a determining unit (303) for determining at least one of available power for the radio communication device and/or a current radio characteristic of the radio communication device,

- a comparing unit (304) for comparing each one out of the determined at least one of the available power and/or radio characteristic to a respective criterion, and

- an activating unit (305) for activating or deactivating the algorithm based on the comparison.

28. A Computer program (410), comprising computer readable code means, which when run in a processing unit (406) comprised in an arrangement in a radio communication device (300, 400) according to claims 14-26 causes the radio communication device (300, 400) to perform the corresponding method according to claims 1 -13.

29. A Computer program product (408) comprising the computer program (410) according to claim 28.