US20060072518A1 - Code power measurement for dynamic channel allocation - Google Patents

Code power measurement for dynamic channel allocation Download PDF

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US20060072518A1
US20060072518A1 US11/284,254 US28425405A US2006072518A1 US 20060072518 A1 US20060072518 A1 US 20060072518A1 US 28425405 A US28425405 A US 28425405A US 2006072518 A1 US2006072518 A1 US 2006072518A1
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code
measurement device
power measurement
correlating
measured
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US11/284,254
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Jung-Lin Pan
Ariela Zeira
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InterDigital Technology Corp
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InterDigital Technology Corp
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Priority to US09/901,289 priority patent/US6993002B2/en
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Priority to US11/284,254 priority patent/US20060072518A1/en
Publication of US20060072518A1 publication Critical patent/US20060072518A1/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/04Wireless resource allocation
    • H04W72/08Wireless resource allocation where an allocation plan is defined based on quality criteria
    • H04W72/082Wireless resource allocation where an allocation plan is defined based on quality criteria using the level of interference
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69Spread spectrum techniques
    • H04B1/707Spread spectrum techniques using direct sequence modulation
    • H04B1/7097Interference-related aspects
    • H04B1/7103Interference-related aspects the interference being multiple access interference
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J13/00Code division multiplex systems
    • H04J13/16Code allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B2201/00Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/7097Direct sequence modulation interference
    • H04B2201/709709Methods of preventing interference
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14Spectrum sharing arrangements between different networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/10Scheduling measurement reports ; Arrangements for measurement reports
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0212Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0212Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0219Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave where the power saving management affects multiple terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation where an allocation plan is defined based on the type of the allocated resource
    • H04W72/0446Wireless resource allocation where an allocation plan is defined based on the type of the allocated resource the resource being a slot, sub-slot or frame
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation where an allocation plan is defined based on the type of the allocated resource
    • H04W72/0466Wireless resource allocation where an allocation plan is defined based on the type of the allocated resource the resource being a scrambling code
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access, e.g. scheduled or random access
    • H04W74/04Scheduled or contention-free access
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks
    • Y02D70/10Techniques for reducing energy consumption in wireless communication networks according to the Radio Access Technology [RAT]
    • Y02D70/12Techniques for reducing energy consumption in wireless communication networks according to the Radio Access Technology [RAT] in 3rd Generation Partnership Project [3GPP] networks
    • Y02D70/124Techniques for reducing energy consumption in wireless communication networks according to the Radio Access Technology [RAT] in 3rd Generation Partnership Project [3GPP] networks in 3rd generation [3G] networks
    • Y02D70/1242Techniques for reducing energy consumption in wireless communication networks according to the Radio Access Technology [RAT] in 3rd Generation Partnership Project [3GPP] networks in 3rd generation [3G] networks in Universal Mobile Telecommunications Systems [UMTS] networks
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks
    • Y02D70/40According to the transmission technology

Abstract

A code power measurement device for measuring an interference level with respect to a desired code potentially used in a code division multiple access communication system includes an input, a correlating device, and a power measurement device. The input is configured to receive a signal corresponding to a received radio frequency spectrum potentially used by the desired code. The correlating device correlates the received signal with the desired code. The power measurement device measures a power level of the correlated signal.

Description

  • This application claims priority of U.S. patent application Ser. No. 09/901,289 filed Jul. 9, 2001, which in turn claims benefit of Provisional Application No. 60/217,093, filed Jul. 10, 2000 which are incorporated by reference as if fully set forth herein.
  • BACKGROUND
  • The invention relates generally to resource allocation in wireless spread spectrum time division duplex communication systems using code division multiple access. More specifically, the invention relates to assigning time slots and codes in such systems.
  • FIG. 1 depicts a wireless spread spectrum time division duplex (TDD) communication system using code division multiple access (CDMA). The system has a plurality of base stations 20 1-20 7. Each base station 20 1 communicates with user equipments (UEs) 22 1-22 3 in its operating area or cell. Communications transmitted from the base station 201 to the UE 22 1 are referred to as downlink communications and communications transmitted from the UE 22 1 to the base station 20 1 are referred to as uplink communications. In addition to communicating over different frequency spectrums, spread spectrum TDD/CDMA systems carry multiple communications over the same spectrum. The multiple signals are distinguished by their respective codes.
  • Since a signal sent using a particular code is distinguishable from other signals in the same spectrum, each code creates a virtual communication channel within the spectrum. For use in distinguishing signals originating from different cells, each base station 20 1-20 7 has an assigned scrambling code, c*scramb. To transmit a specific data signal in such a system, the data signal is mixed with its base station's scrambling code, c*scramb, and spread using its assigned channel code.
  • Also, to more efficiently use the spread spectrum, TDD/CDMA systems use repeating frames 26 divided into a number of time slots 24 1-24 n, such as fifteen time slots, as illustrated in FIG. 2. In such systems, a communication is sent in selected time slots 24 1-24 n using selected codes. Accordingly, one frame 26 is capable of carrying multiple communications distinguished by both time slot 24 1-24 n and code. The use of a single code in a single time slot at a single frequency spectrum with a spreading factor of sixteen is referred to as a resource unit. If a lower spreading factor is used, the use of a single code in a time slot is considered more than a single resource unit. To illustrate, using a spreading factor of one for a code in a time slot is sixteen resource units.
  • A system using N time slots, S1-SN, M channel codes, Code 1-Code M, and O frequency spectrums, Frequency 1-Frequency O, is illustrated in the Matrix 28 of FIG. 3. Each empty box in the Matrix 28 represents a single resource unit (if a spreading factor of sixteen is used). This Matrix 28 has a total of M×N×O resource units. A typical TDD system uses 15 time slots, 16 channel codes and one or multiple frequency spectrums. Based on the bandwidth required to support a communication, one or multiple resource units are assigned to that communication.
  • One problem in such systems is assigning resource units in the presence of radio interference. Radio interference has multiple causes, such as nearby radio frequency sources and cross interference by signals transmitted in neighboring cells. Sending a communication over a resource unit with a high interference level may result in a loss of signal data.
  • One technique for dealing with this problem is to measure the interference level in each time slot immediately prior to assigning resource units to a communication. Only resource units in time slots having acceptable interference levels will be assigned to the communication. Although this technique reduces the possibility of signal data loss, it does not eliminate all resource units suffering unacceptable interference levels. Additionally, measuring the interference levels immediately prior to assignment requires extensive monitoring using valuable system resources. Accordingly, there exists a need for an alternative approach for assigning resource units.
  • SUMMARY
  • Resource units are assigned within a cell of a wireless time division duplex communication system using code division multiple access. Each resource unit is associated with a time slot and a code. For selected ones of the cell's resource units, the code interference level is measured during that unit's time slot and using that unit's code. The code interference level is compared to a threshold to determine whether that unit has an acceptable code interference level. Resource units are assigned to communications out of the unit's having acceptable interference levels.
  • A code power measurement device for measuring an interference level with respect to a desired code potentially used in a code division multiple access communication system includes an input, a correlating device, and a power measurement device. The input is configured to receive a signal corresponding to a received radio frequency spectrum potentially used by the desired code. The correlating device correlates the received signal with the desired code. The power measurement device measures a power level of the correlated signal.
  • A code power measurement device for measuring an interference level with respect to a desired code potentially used in a code division multiple access communication system includes receiving means, correlating means, and measuring means. The receiving means receives a signal corresponding to a received radio frequency spectrum potentially used by the desired code. The correlating means correlates the received signal with the desired code. The measuring means measures a power level of the correlated signal.
  • A method for measuring an interference level with respect to a desired code potentially used in a code division multiple access communication system begins by receiving a signal corresponding to a received radio frequency spectrum potentially used by the desired code. The received signal is correlated with the desired code and the power level of the correlated signal is measured.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a wireless spread spectrum TDD/CDMA system.
  • FIG. 2 is an illustration of time slots in repeating frames.
  • FIG. 3 is an illustration of resource units distinguished by channel code, time slot and frequency.
  • FIG. 4 is a simplified base station and user equipment.
  • FIG. 5 is a flow chart of slow dynamic channel assignment.
  • FIG. 6 is an example of a preference matrix.
  • FIG. 7 is a code power interference level measurement device.
  • FIG. 8 is a flow chart of fast dynamic channel assignment.
  • FIG. 9 is an illustration of two threshold code assignment.
  • FIG. 10 is an illustration of multiple threshold code assignment.
  • FIG. 11 is a flow chart of multiple threshold code assignment.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • FIG. 4 is a simplified base station 20 1 and UE 22 1 used to implement slow and fast dynamic channel allocation (DCA). FIG. 5 is a flow chart of slow DCA. The flow chart of FIG. 5 will be described in conjunction with the preference matrix 92 of FIG. 6. FIG. 6 is an illustration of a preference matrix 92 created as a result of slow DCA in a TDD/CDMA system having 16 channel codes, 15 time slots and one frequency. Each box in the matrix 92 represents one out of 240 possible resource units.
  • Initially, the radio frequency power interference level in each time slot is measured, such as by interference signal code power (ISCP) or determining inter-cell interference, by link gain, step 80. The ISCP may be measured using the midambles of received communication bursts, although other ISCP measurement techniques may be used. Each time slot's interference is measured at either the base station 20 1, UEs 22 1-22 n or both. For time slots interference measurements taken at the base station 20 1, the base station's antenna 30 receives various radio frequency signals. The received signals are passed through an isolator 32 to a demodulator 36 to produce a baseband signal. A time slot interference measurement device 52 processes the baseband signal to measure the interference level, such as by ISCP, within each time slot 24 1-24 n of the frame 26.
  • For time slot interference measurements taken at the UEs 22 1-22 n, the UE's antenna 60 receives various radio frequency signals. The received signals are passed through an isolator or switch 62 to a demodulator 64 to produce a baseband signal. A time slot interference measurement device 78 processes the baseband signal to measure the interference level, such as by ISCP, within each time slot 24 1-24 n. The time slot measurements taken at each UE 22 1-22 n are typically signaled to the base station 20 1. Alternately, the measurements may be multiplexed with the uplink data sent to the base station 20 1 produced by the data generator 78.
  • A comparator 56 at the base station 20 1 compares each time slot's interference level to a threshold, step 82. If only the base station 20 1 took time slot interference measurements, each of these measurements is compared to the threshold. If only the UEs measurements are used, the comparator 56 compares the average for each time slots interference level to the threshold. If measurements from the base station 20 1 and UEs 22 1-22 n are used, a weighted average of each time slot's measurement is used with the base station's given higher weight. If UE measurements or UE and base station measurements differ significantly, each will use its own measurements to determine time slot availability. Alternately, averaging may still be applied. If a time slot's interference level is above the threshold, all the resource units associated with that time slot are eliminated for potential assignment to communications, step 84. The resource unit assignment device 58 eliminates all the eliminated time slots' resource units in the stored preference matrix 92. To illustrate using FIG. 6, time slot 4 has an unacceptable interference level. All of the resource units in the column under time slot 4 are marked with an “X” indicating that they are eliminated from potential assignment. Additionally, other time slots are eliminated because they are reserved for other purposes, such as for a broadcast channel, and are likewise marked with an “X”.
  • For each resource unit in time slots having acceptable interference levels, the code power interference level is measured, step 86. The code power measurements may be taken at the base station 20 1 with code power interference measurement device 50, UE's code power interference measurement devices 68 or both. Code power measurements taken at the UE 20 1 are either signaled or multiplexed with uplink data.
  • FIG. 7 depicts one possible code power interference measuring device 50, 68. The code power measurement 50, 68 is taken on a frequency spectrum where the codes of interest are to be transmitted. A signal 94 representing the received frequency spectrum is input into the code power measurement device. The input signal 94 may be a radio frequency, an intermediate frequency or a baseband signal. A code correlation device 96 correlates the input signal with the code of interest. The code correlation device 96 may be a despreader, a correlator or a matched filter. If the code of interest is a complex code, the correlator may perform a complex multiplication for the correlation. The power measurement device 98 sums the power of the correlated chips. If a complex code is used, the sum is the sum of the magnitude of the complex chips. The resulting sum is the code power 100 for the code of interest. The code power measurement is taken during each time slot to be measured. The measured power may be indexed into a short hand value, such as “1” to “10” in FIG. 6.
  • Each non-eliminated resource unit's code interference level is compared to a threshold at comparator 54. If only the base station 201 took code interference measurements, these measurements are compared to the threshold. If only the UE's measurements are used, the comparator 54 compares the average of these measurements to the threshold. If measurements from the base station 20 1 and UEs 22 1-22 n are used, a weighted average is used. Typically, the base station's measurement is given a higher weight. Alternately, the interference measurements may be UE 22 1-22 n specific. Furthermore, if UE measurements or UE and base station measurements differ significantly, each will use its own measurements. Each UE's measurement is compared to a threshold for use in resource assignments for that UE 22 1-22 n. Each UE 22 1-22 n has its own preference matrix 92, if UE specific.
  • If a resource unit's code interference level is above the threshold, the resource unit is eliminated from being assigned, step 88. The resource unit assignment device 58 eliminates the resource unit in the preference matrix 92. To illustrate using FIG. 6, the resource unit associated with time slot 2 and channel code 1 has an unacceptable interference level and is marked in the matrix 92 with an “x”. The resource unit assignment device 58 also stores in preference matrix 92 an indicator of the code interference level of the acceptable resource units, step 90. As shown in the preference matrix 92, the interference levels are indicated with a value of “1” to “10” with a “1” having a high marginally acceptable code interference level and a “10” having an extremely low code interference level.
  • The base station's resource unit assignment device 58 sends signals to the base station's data estimation device 48, channel estimation device 46 and spreading and training sequence insertion devices 42 1-42 n to control which codes and time slots are used by each device. The channel estimation device 46 and data estimation device 48 process the baseband signal in the time slots and appropriate codes assigned to the uplink communication's burst and the base station's scrambling code, c*scramb. The assigned time slots and codes are sent to the channel estimation device 46 and data estimation device 48 from the resource unit assignment device 58. The channel estimation device 46 commonly uses the training sequence component in the baseband signal to provide channel information, such as impulse responses. The channel information is used by the data estimation device 48 to estimate the data in the received burst.
  • Data to be sent to the UEs 20 1-20 n, such as over a traffic channel, is generated by data generators 44 1-44 n. The data is assigned one or multiple resource units based on the communications' bandwidth requirements by the resource unit assignment device 58. Each spreading and training sequence insertion device 42 1-42 n mixes the data with the base station's scrambling code, c*scramb, spreads the data and makes the spread reference data time-multiplexed with a training sequence in the appropriate time slots and codes of the assigned resource units. The output of the spreading and training sequence insertion devices are referred to as a communication burst. Each communication burst is subsequently amplified by a corresponding amplifier 40 1-40 n. Each amplified communication burst is summed by a sum device 38 with any other communication burst created through other devices. The summed communication bursts are modulated by a modulator 34. The modulated signal is passed through an isolator 32 and radiated by an antenna 30, as shown, or, alternately, through an antenna array. The radiated signal is passed through a wireless radio interface 80 to the UEs 22 1-22 n.
  • The base station's resource unit assignment device also sends the resource unit assignments to the UEs 22 1-22 n. The assignments may be signaled to the UEs 22 1-22 n or multiplexed with traffic data. The sent assignments are used by the UE's resource unit assignment device 76 to determine which resource units are assigned to the UE's downlink and uplink channels.
  • For the received downlink data, the channel estimation device 68 and data estimation device 70 processes the received baseband signal in the time slots and appropriate codes assigned to the downlink communication burst and the base station's scrambling code, c*scramb. The assigned time slots and codes are sent to the channel estimation device 68 and data estimation device 70 from the resource unit assignment device 58. The channel estimation device 68 commonly uses the training sequence component in the baseband signal to provide channel information. The channel information is used by the data estimation device 70 to estimate the data in the received burst. Uplink data is generated by a data generator 78. The uplink data is assigned one or multiple resource units based on the communication's bandwidth requirements. Spreading and training sequence insertion device 74 mixes the data with the base station's scrambling code, c*scramb, spreads the data and makes the spread reference data time-multiplexed with a training sequence in the appropriate time slots and codes of the assigned resource units. The assigned resource units are sent to the spreading and training sequence insertion device 74 by the resource unit assignment device 76. The resulting sequence from the spreading and training sequence insertion device 74 is referred to as a communication burst. The communication burst is subsequently amplified by an amplifier 72. The amplified communication burst is modulated to radio frequency by the modulator 66, passed through an isolator 62 and radiated by an antenna 60 or, alternately, by an antennal array. The radiated signal passes through the wireless radio interface 80 to the base station 20 1.
  • The preference matrix 92 used by the resource unit assignment device 58 may be updated on a per frame basis or on a more periodic basis. Using a statistical analysis, the preference matrix 92 may be updated from a period of minutes to a daily basis. In one approach, the user equipments 22 1-22 n measure the time slot interference level and the code interference level during the idle time between successive reception and transmission bursts. These measurements are sent to the base station 20 1. In another approach, the measurements are taken on a periodic basis. In a different approach, the base station 201 signals the UE 22 1-22 n to take measurements. Accordingly, the measurements are taken on-demand. The base station 20 1 updates the preference matrix 92 based on these measurements. The updated resource unit assignments are subsequently sent from the base station 20 1 to the UEs 22 1-22 n.
  • FIG. 8 is a flow chart for fast DCA and will also be explained in conjunction with FIGS. 4 and 6. To support communications, a cell is assigned resource units for both the uplink and the downlink. The number of assigned resource units is based on the uplink and downlink bandwidth demand. When the cell requires additional resource units, the resource unit assignment device 58 will select additional resource units to allocate for uplink and downlink communications, step 106. Using the preference matrix 92, the resource unit assignment device 58 will assign a corresponding number of resource units from the available resource units, step 94. When demand decreases, conversely, the resource unit assignment device 58 releases the resource units.
  • One approach for selecting resource units is first available. Using this technique, the assignment device 58 searches through the preference matrix 92 until it reaches the first available acceptable time slot. To illustrate using matrix 92, if two resource units were requested, starting at code 1, slot 1 and first working left to right, code 1, slots 5 and 6 would be selected. These slots are the first encountered acceptable slots.
  • Another approach is least interfered channel. The assignment device 58 searches through the preference matrix 92 for the resource unit with the lowest code interference level. To illustrate, if one resource unit was selected, code 5, slot 11 having a value of “10” is selected. Since this approach searches through the entire matrix 92 before selecting a resource unit, it requires more processing time. However, since the selected resource unit has the lowest interference level out of the available resource units, communication interference is reduced.
  • In systems using adaptive power control, it is advantageous to assign consecutive time slots. In such systems, a modified approach may be used. Using first available, the first available number of consecutive time slots would be assigned. For instance, if three time slots were to be assigned, code 1, S5-S7 would be selected. Using least-interfered channel, the consecutive time slots with the least interference are selected. For instance, if three were assigned, code 1, S11-S13 would be selected.
  • Similarly, to minimize the number of time slots used, multiple codes within a time slot are assigned, such as codes 1-3, S11. Additionally, a hybrid approach, such as blocks, may be used—i.e. for four resource units, code 1, S11-S12 and code 2, S11-S12.
  • One technique for assigning resource units is to minimize the number of time slots used. By reducing the number of used time slots, interference to neighboring cells is reduced. Using the multiple threshold technique, when resource units need to be allocated initially, the system finds the time slot or slots with the maximum number of codes available as determined by the interference level. As a result, the minimum number of time slots are allocated for a given number of resource units.
  • After the initial allocation, resource units are assigned to the time slots which already allocated codes to communications but still have codes available first. This allocation prevents additional time slots from being used. After the previously assigned time slots are used, new time slots are assigned with the time slot having the highest number of available codes being assigned first.
  • FIG. 11 illustrates an approach for controlling the maximum number of codes assigned to a time slot. Generally, it is desirable to limit the number of time slots used. By not using time slots, these time slots are left available for use by other cross interfering cells.
  • An interference level for each time slot is measured, 124. To determine the number of codes that should be used in each time slot, a multiple threshold scheme is utilized. The measured interference for each slot is compared to the multiple thresholds 126, and a maximum number of time slots to assign is determined from the comparison, 128. One multiple threshold scheme uses two thresholds, I1 and I2 as shown in FIG. 9. If the measured interference level is below I1, multiple codes 110 may be assigned to the time slot. If the measured interference level is between I1 and I2, one code 112 may be assigned in these time slots. If the interference level is above I2, no codes 114 may be used in this time slot.
  • Another multiple threshold scheme uses more than two interference levels, I1, I2, . . . ,In. If the measured interference level is above In, no codes 122 are available. If between In and In-1, one code 120 is available. The codes available for the time slot keep increasing by one per each threshold, In-2, In-3, etc., until the interference level is less than I1. When the interference is less than I1, n codes 118 are available for the time slot.

Claims (17)

1. A code power measurement device for measuring an interference level with respect to a desired code potentially used in a code division multiple access communication system, the code power measurement device comprising:
an input configured to receive a signal corresponding to a received radio frequency spectrum potentially used by the desired code;
a correlating device for correlating the received signal with the desired code; and
a power measurement device for measuring a power level of the correlated signal.
2. The code power measurement device of claim 1, wherein said correlating device includes a matched filter.
3. The code power measurement device of claim 1, wherein said correlating device includes a despreader.
4. The code power measurement device of claim 1, wherein the desired code is complex and said correlating device performs a complex multiplication.
5. The code power measurement device of claim 1, wherein said correlating device includes a correlator.
6. The code power measurement device of claim 1, wherein an output of said power measurement device is an indicator of the measured power level of the correlated signal.
7. The code power measurement device of claim 1 for use in a time division duplex/code division multiple access system, wherein the measured power level is measured in a time slot of interest.
8. A code power measurement device for measuring an interference level with respect to a desired code potentially used in a code division multiple access communication system, the code power measurement device comprising:
receiving means for receiving a signal corresponding to a received radio frequency spectrum potentially used by the desired code;
correlating means for correlating the received signal with the desired code; and
measuring means for measuring a power level of the correlated signal.
9. The code power measurement device of claim 8, wherein said correlating means includes a matched filter.
10. The code power measurement device of claim 8, wherein said correlating means includes a despreader.
11. The code power measurement device of claim 8, wherein the desired code is complex and said correlating means performs a complex multiplication.
12. The code power measurement device of claim 8, wherein said correlating means includes a correlator.
13. The code power measurement device of claim 8, wherein an output of said measuring means is an indicator of the measured power level of the correlated signal.
14. The code power measurement device of claim 8 for use in a time division duplex/code division multiple access system, wherein the measured power level is measured in a time slot of interest.
15. A method for measuring an interference level with respect to a desired code potentially used in a code division multiple access communication system, the method comprising the steps of:
receiving a signal corresponding to a received radio frequency spectrum potentially used by the desired code;
correlating the received signal with the desired code; and
measuring a power level of the correlated signal.
16. The method of claim 15, further comprising the step of:
determining an indicator of the measured power level.
17. The method of claim 15 for use in a time division duplex/code division multiple access system, wherein the measured power level is measured in a time slot of interest.
US11/284,254 2000-07-10 2005-11-21 Code power measurement for dynamic channel allocation Abandoned US20060072518A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US21709300P true 2000-07-10 2000-07-10
US09/901,289 US6993002B2 (en) 2000-07-10 2001-07-09 Code power measurement for dynamic channel allocation
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Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070105574A1 (en) * 2005-10-26 2007-05-10 Qualcomm Incorporated Interference management using resource utilization masks sent at constant psd
US20070105576A1 (en) * 2005-10-26 2007-05-10 Qualcomm Incorporated Weighted fair sharing of a wireless channel using resource utilization masks
US20070115817A1 (en) * 2005-10-26 2007-05-24 Qualcomm Incorporated Minimum rate guarantees on wireless channel using resource utilization messages
US20070298809A1 (en) * 2006-06-27 2007-12-27 Samsung Electronics Co., Ltd. Apparatus and method for allocating resources in a wireless communication system
US20110105065A1 (en) * 2008-01-04 2011-05-05 Qualcomm Incorporated Dynamic interference control in a wireless communication network
GB2484278A (en) * 2010-10-04 2012-04-11 Airspan Networks Inc Suppressing co-channel interference in dependence upon probabilities of establishing a link between a base station and a terminal via resource blocks
US20120094680A1 (en) * 2010-10-18 2012-04-19 Telefonaktiebolaget Lm Ericsson (Publ) Communication scheduling
US8472339B2 (en) 2010-10-04 2013-06-25 Airspan Networks Inc. Apparatus and method for controlling a wireless feeder network
US8811243B2 (en) 2010-10-04 2014-08-19 Airspan Networks Inc. Apparatus and method for controlling a wireless feeder network
US8918114B2 (en) 2005-10-26 2014-12-23 Qualcomm Incorporated Using resource utilization messages in a multi-carrier MAC to achieve fairness
US9001689B1 (en) * 2014-01-24 2015-04-07 Mimosa Networks, Inc. Channel optimization in half duplex communications systems
US9130305B2 (en) 2013-03-06 2015-09-08 Mimosa Networks, Inc. Waterproof apparatus for cables and cable interfaces
US9161387B2 (en) 2013-05-30 2015-10-13 Mimosa Networks, Inc. Wireless access points providing hybrid 802.11 and scheduled priority access communications
US9179336B2 (en) 2013-02-19 2015-11-03 Mimosa Networks, Inc. WiFi management interface for microwave radio and reset to factory defaults
US9191081B2 (en) 2013-03-08 2015-11-17 Mimosa Networks, Inc. System and method for dual-band backhaul radio
USD752566S1 (en) 2014-09-12 2016-03-29 Mimosa Networks, Inc. Wireless repeater
US9362629B2 (en) 2013-03-06 2016-06-07 Mimosa Networks, Inc. Enclosure for radio, parabolic dish antenna, and side lobe shields
US9780892B2 (en) 2014-03-05 2017-10-03 Mimosa Networks, Inc. System and method for aligning a radio using an automated audio guide
US9930592B2 (en) 2013-02-19 2018-03-27 Mimosa Networks, Inc. Systems and methods for directing mobile device connectivity
US9998246B2 (en) 2014-03-13 2018-06-12 Mimosa Networks, Inc. Simultaneous transmission on shared channel
US10070325B2 (en) 2015-06-25 2018-09-04 Airspan Networks Inc. Sub-sampling antenna elements
US10098018B2 (en) 2015-06-25 2018-10-09 Airspan Networks Inc. Configurable antenna and method of operating such a configurable antenna
US10231139B2 (en) 2015-06-25 2019-03-12 Airspan Networks Inc. Node role assignment in networks
US10257733B2 (en) 2015-06-25 2019-04-09 Airspan Networks Inc. Managing external interference in a wireless network
US10306485B2 (en) 2015-06-25 2019-05-28 Airspan Networks Inc. Configurable antenna and method of operating such a configurable antenna

Families Citing this family (62)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004503170A (en) * 2000-07-10 2004-01-29 インターデイジタル テクノロジー コーポレーション Code power measurement for dynamic channel assignment
MXPA03000798A (en) 2000-07-27 2004-03-18 Interdigital Tech Corp Adaptive uplink/downlink timeslot assignment in a hybrid wireless time division multiple access/code division multiple access communication system.
FR2821230B1 (en) * 2001-02-20 2003-04-11 Mitsubishi Electric Inf Tech Method of transmission resource allocation
US6952410B2 (en) * 2001-02-26 2005-10-04 Lucent Technologies Inc. Semi-static code space division for multiple shared packet data channels in high bandwidth mixed service CDMA systems
US6591109B2 (en) 2001-08-17 2003-07-08 Interdigital Technology Corporation Cross cell user equipment interference reduction in a time division duplex communication system using code division multiple access
GB0125390D0 (en) * 2001-10-23 2001-12-12 Ipwireless Inc Resource allocation in a packet-based radio communication system
FI20020154A0 (en) * 2002-01-28 2002-01-28 Nokia Corp Hõiri ÷ nDeleting radiojõrjestelmõn receiver
JP3581357B2 (en) * 2002-05-22 2004-10-27 松下電器産業株式会社 Communication terminal apparatus and the spreading code estimating method
EP1722497A3 (en) * 2002-06-27 2012-03-21 Interdigital Technology Corporation Method for estimating an interference signal code power measurement, user equipment and base station corresponding to the method
US6826411B2 (en) * 2002-06-27 2004-11-30 Interdigital Technology Corporation Low power interference signal code power (ISCP) measurement
EP1420603A1 (en) * 2002-11-18 2004-05-19 Siemens Aktiengesellschaft Method for dynamic channel allocation
AT556564T (en) * 2002-11-20 2012-05-15 Interdigital Tech Corp Assignment of timelets
US7106708B2 (en) * 2003-02-19 2006-09-12 Interdigital Technology Corp. Method for implementing fast dynamic channel allocation (F-DCA) call admission control in radio resource management
US7107060B2 (en) * 2003-02-27 2006-09-12 Interdigital Technology Corporation Method of optimizing an implementation of fast-dynamic channel allocation call admission control in radio resource management
US7130637B2 (en) * 2003-02-27 2006-10-31 Interdigital Technology Corporation Method for implementing fast dynamic channel allocation background interference reduction procedure in radio resource management
US7212826B2 (en) * 2003-02-27 2007-05-01 Interdigital Technology Corporation Method for implementing fast dynamic channel allocation escape mechanism in radio resource management
WO2004077850A2 (en) * 2003-02-27 2004-09-10 Interdigital Technology Corporation Method for implementing fast-dynamic channel allocation radio resource management procedures
US7136656B2 (en) * 2003-03-20 2006-11-14 Interdigital Technology Corporation Method of fast dynamic channel allocation call admission control for radio link addition in radio resource management
TW200807915A (en) * 2003-03-25 2008-02-01 Interdigital Tech Corp Method and system for managing resources in wireless communication systems
US20040190541A1 (en) * 2003-03-26 2004-09-30 Interdigital Technology Corporation Determination of optimal switching points between the uplink and downlink
US7110771B2 (en) * 2003-04-17 2006-09-19 Interdigital Technology Corporation Method for implementing fast-dynamic channel allocation call admission control for radio link reconfiguration in radio resource management
AT352966T (en) * 2003-07-24 2007-02-15 Siemens Spa Italiana Method of estimating interference signal code performance (iscp) in a td-cdma system
US9585023B2 (en) * 2003-10-30 2017-02-28 Qualcomm Incorporated Layered reuse for a wireless communication system
US8526963B2 (en) * 2003-10-30 2013-09-03 Qualcomm Incorporated Restrictive reuse for a wireless communication system
KR20060095778A (en) * 2003-11-07 2006-09-01 인터디지탈 테크날러지 코포레이션 Wireless communication method and apparatus for implementing call admission control based on common measurements
WO2005046151A1 (en) * 2003-11-07 2005-05-19 Aalborg Universitet Method of detecting signals using an iterative inter-symbol interference (isi) and multiple access interference (mai) removal
US7599339B2 (en) 2003-11-12 2009-10-06 Interdigital Technology Corporation Method and system for transferring wireless transmit/receive unit-specific information
KR100575434B1 (en) * 2003-11-19 2006-05-03 한국전자통신연구원 Method for resource space partition and a physical channel assignment in cellular based on ofdma
CN1622500A (en) * 2003-11-28 2005-06-01 皇家飞利浦电子股份有限公司 A channel dynamic allocation method and apparatus for TDD-CDMA communication system
US7096304B2 (en) * 2003-12-31 2006-08-22 Micron Technology, Inc. Apparatus and method for managing voltage buses
GB2413240A (en) 2004-04-13 2005-10-19 Ipwireless Inc Dynamic channel assignment in a TDD communication system
US8059589B2 (en) * 2004-06-09 2011-11-15 Qualcomm Incorporated Dynamic restrictive reuse scheduler
US7680475B2 (en) 2004-06-09 2010-03-16 Qualcomm Incorporated Dynamic ASBR scheduler
US8032145B2 (en) 2004-07-23 2011-10-04 Qualcomm Incorporated Restrictive reuse set management algorithm for equal grade of service on FL transmission
US7489732B2 (en) * 2004-10-26 2009-02-10 Jian Cheng Decreasing computational complexity of TD-SCDMA measurement process
US7548752B2 (en) * 2004-12-22 2009-06-16 Qualcomm Incorporated Feedback to support restrictive reuse
CN100536377C (en) 2005-05-13 2009-09-02 上海原动力通信科技有限公司 Method for allocating code channel
JP4915636B2 (en) * 2005-05-20 2012-04-11 株式会社国際電気通信基礎技術研究所 Wireless device
US8081592B2 (en) 2005-10-26 2011-12-20 Qualcomm Incorporated Flexible medium access control (MAC) for ad hoc deployed wireless networks
CA2626378C (en) * 2005-10-26 2016-09-20 Qualcomm Incorporated Interference management using resource utilization masks sent at constant psd
KR100895183B1 (en) * 2006-02-03 2009-04-24 삼성전자주식회사 Transmitting/receiving method and apparatus canceling other cell interference in wireless communication systems
US8260340B2 (en) * 2006-02-17 2012-09-04 Alcatel Lucent Methods of reverse link power control
US8125887B2 (en) * 2006-03-01 2012-02-28 Nec Corporation Mobile communication system, its scramble code assigning method, mobile station, and base station
KR100726078B1 (en) * 2006-08-17 2007-05-31 에스케이 텔레콤주식회사 Apparatus and method for eliminating interference signal in the reciever of base station
CN101641874B (en) 2006-08-18 2013-11-06 富士通株式会社 New and legacy wireless communication device coexisting amble sequence
US8238319B2 (en) 2006-09-01 2012-08-07 Advanced Telecommunications Research Institute International Radio apparatus
CN100596224C (en) 2006-09-08 2010-03-24 大唐移动通信设备有限公司 Method and device for dynamically regulating system channel resource
US20080165741A1 (en) * 2007-01-05 2008-07-10 Industrial Technology Research Institute Methods for interference measurement and prediction
WO2008093621A1 (en) 2007-01-31 2008-08-07 Sharp Kabushiki Kaisha Mobile communication system, base station device, and mobile station device
US7995641B2 (en) * 2007-11-06 2011-08-09 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for code power parameter estimation for received signal processing
US8705506B2 (en) 2007-11-16 2014-04-22 Qualcomm Incorporated Time reservation for a dominant interference scenario in a wireless communication network
US9820240B2 (en) 2008-02-01 2017-11-14 Qualcomm Incorporated Virtual scheduling in heterogeneous networks
BRPI0908040A2 (en) 2008-02-04 2015-08-04 Samsung Electronics Co Ltd Data control and multiplexing in systems and communication
CA2714421C (en) 2008-02-08 2017-09-12 Zte (Usa) Inc. Dynamic adjustment of downlink/uplink allocation ratio in tdd wireless systems
KR100964446B1 (en) * 2008-02-15 2010-06-16 에스케이 텔레콤주식회사 Method and system for allocating a channel in downlink
US8050205B2 (en) * 2009-07-16 2011-11-01 Palo Alto Research Center Incorporated Slot adaptation in a wireless dynamic TDMA network with reservations
CN102264138B (en) * 2010-05-24 2014-04-02 电信科学技术研究院 Method, device and system for bearing services
GB2486494A (en) * 2010-12-17 2012-06-20 Vodafone Ip Licensing Ltd Interference detection in mobile telecommunications networks
CN102158969B (en) * 2011-02-15 2013-11-20 大唐移动通信设备有限公司 Method and equipment for selecting time code resource
US20150071257A1 (en) * 2013-09-10 2015-03-12 Qualcomm Incorporated Radio resource request for irat measurement in td-hsupa/td-hsdpa
US20160119917A1 (en) * 2014-10-23 2016-04-28 Qualcomm Incorporated Scheduling downlink time slots in a high speed data network
GB2543800A (en) * 2015-10-28 2017-05-03 Ayyeka Tech Ltd Method and system for scheduling transmit time slots for network-connected measurement units

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2003A (en) * 1841-03-12 Improvement in horizontal windivhlls
US5297161A (en) * 1992-06-29 1994-03-22 Motorola Inc. Method and apparatus for power estimation in an orthogonal coded communication system
US5420850A (en) * 1993-03-10 1995-05-30 Ntt Mobile Communications Network, Inc. Mobile station and cell selecting method for code division multiplex access mobile communication
US5533013A (en) * 1992-12-01 1996-07-02 Nokia Mobile Phones Limited Communication method and system
US6064662A (en) * 1994-04-28 2000-05-16 At&T Corp System and method for optimizing spectral efficiency using time-frequency-code slicing
US20010007551A1 (en) * 1996-03-22 2001-07-12 Eiji Katsura Radio communication apparatus and method
US20020003782A1 (en) * 2000-07-10 2002-01-10 Interdigital Technology Corporation Code power measurement for dynamic channel allocation
US20020018529A1 (en) * 2000-07-05 2002-02-14 Texas Instruments Incorporated Code division multiple access wireless system with time reversed spaced time block transmitter diversity encoding
US6421380B1 (en) * 1999-03-10 2002-07-16 International Business Machines Corporation Demodulator for digital communication systems
USRE37870E1 (en) * 1994-01-31 2002-10-08 Matsushita Electric Industrial Co., Ltd. CDMA/TDD radio communication system
US20030016641A1 (en) * 2001-05-14 2003-01-23 Terry Stephen E. Channel quality measurements for downlink resource allocation
US20030058929A1 (en) * 1998-09-30 2003-03-27 Earl C. Cox Adaptive wireless communication receiver
US6580703B1 (en) * 1998-09-24 2003-06-17 Matsushita Electric Industrial Co., Ltd. CDMA base station apparatus and code assignment method
US6650694B1 (en) * 2000-02-18 2003-11-18 Texas Instruments Incorporated Correlator co-processor for CDMA RAKE receiver operations
US6694141B1 (en) * 1997-06-24 2004-02-17 Nokia Networks Oy Channel selection in a radio link system
US6775260B1 (en) * 1999-02-25 2004-08-10 Texas Instruments Incorporated Space time transmit diversity for TDD/WCDMA systems
US6996162B1 (en) * 1999-10-05 2006-02-07 Texas Instruments Incorporated Correlation using only selected chip position samples in a wireless communication system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2320648A (en) * 1996-12-20 1998-06-24 Dsc Telecom Lp Controlling interference in a cell of a wireless telecommunications system
EP1087630B1 (en) * 1999-09-24 2009-07-15 Alcatel Lucent Method for dynamic channel allocation with rearrangement in a TDD/CDMA radio communications system and system therefor
EP1176730A1 (en) * 2000-07-26 2002-01-30 Motorola, Inc. Interference estimation in a communications system

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2003A (en) * 1841-03-12 Improvement in horizontal windivhlls
US5297161A (en) * 1992-06-29 1994-03-22 Motorola Inc. Method and apparatus for power estimation in an orthogonal coded communication system
US5533013A (en) * 1992-12-01 1996-07-02 Nokia Mobile Phones Limited Communication method and system
US5420850A (en) * 1993-03-10 1995-05-30 Ntt Mobile Communications Network, Inc. Mobile station and cell selecting method for code division multiplex access mobile communication
USRE37870E1 (en) * 1994-01-31 2002-10-08 Matsushita Electric Industrial Co., Ltd. CDMA/TDD radio communication system
US6064662A (en) * 1994-04-28 2000-05-16 At&T Corp System and method for optimizing spectral efficiency using time-frequency-code slicing
US20010007551A1 (en) * 1996-03-22 2001-07-12 Eiji Katsura Radio communication apparatus and method
US6694141B1 (en) * 1997-06-24 2004-02-17 Nokia Networks Oy Channel selection in a radio link system
US6580703B1 (en) * 1998-09-24 2003-06-17 Matsushita Electric Industrial Co., Ltd. CDMA base station apparatus and code assignment method
US20030058929A1 (en) * 1998-09-30 2003-03-27 Earl C. Cox Adaptive wireless communication receiver
US6775260B1 (en) * 1999-02-25 2004-08-10 Texas Instruments Incorporated Space time transmit diversity for TDD/WCDMA systems
US6421380B1 (en) * 1999-03-10 2002-07-16 International Business Machines Corporation Demodulator for digital communication systems
US6996162B1 (en) * 1999-10-05 2006-02-07 Texas Instruments Incorporated Correlation using only selected chip position samples in a wireless communication system
US6650694B1 (en) * 2000-02-18 2003-11-18 Texas Instruments Incorporated Correlator co-processor for CDMA RAKE receiver operations
US20020018529A1 (en) * 2000-07-05 2002-02-14 Texas Instruments Incorporated Code division multiple access wireless system with time reversed spaced time block transmitter diversity encoding
US7154958B2 (en) * 2000-07-05 2006-12-26 Texas Instruments Incorporated Code division multiple access wireless system with time reversed space time block transmitter diversity
US20020003782A1 (en) * 2000-07-10 2002-01-10 Interdigital Technology Corporation Code power measurement for dynamic channel allocation
US20030016641A1 (en) * 2001-05-14 2003-01-23 Terry Stephen E. Channel quality measurements for downlink resource allocation

Cited By (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070105574A1 (en) * 2005-10-26 2007-05-10 Qualcomm Incorporated Interference management using resource utilization masks sent at constant psd
US20070105576A1 (en) * 2005-10-26 2007-05-10 Qualcomm Incorporated Weighted fair sharing of a wireless channel using resource utilization masks
US20070115817A1 (en) * 2005-10-26 2007-05-24 Qualcomm Incorporated Minimum rate guarantees on wireless channel using resource utilization messages
US8942161B2 (en) 2005-10-26 2015-01-27 Qualcomm Incorporated Weighted fair sharing of a wireless channel using resource utilization masks
US9204428B2 (en) * 2005-10-26 2015-12-01 Qualcomm Incorporated Interference management using resource utilization masks sent at constant PSD
US8918114B2 (en) 2005-10-26 2014-12-23 Qualcomm Incorporated Using resource utilization messages in a multi-carrier MAC to achieve fairness
US20070298809A1 (en) * 2006-06-27 2007-12-27 Samsung Electronics Co., Ltd. Apparatus and method for allocating resources in a wireless communication system
US8213948B2 (en) * 2006-06-27 2012-07-03 Samsung Electronics Co., Ltd. Apparatus and method for allocating resources in a wireless communication system
US20110105065A1 (en) * 2008-01-04 2011-05-05 Qualcomm Incorporated Dynamic interference control in a wireless communication network
GB2484278A (en) * 2010-10-04 2012-04-11 Airspan Networks Inc Suppressing co-channel interference in dependence upon probabilities of establishing a link between a base station and a terminal via resource blocks
US8472339B2 (en) 2010-10-04 2013-06-25 Airspan Networks Inc. Apparatus and method for controlling a wireless feeder network
US8811243B2 (en) 2010-10-04 2014-08-19 Airspan Networks Inc. Apparatus and method for controlling a wireless feeder network
US8842621B2 (en) 2010-10-04 2014-09-23 Airspan Networks Inc. Apparatus and method for controlling a wireless network
US8467397B2 (en) 2010-10-04 2013-06-18 Airspan Networks Inc. Apparatus and method for controlling a wireless feeder network
US20120094680A1 (en) * 2010-10-18 2012-04-19 Telefonaktiebolaget Lm Ericsson (Publ) Communication scheduling
US9220111B2 (en) * 2010-10-18 2015-12-22 Telefonaktiebolaget L M Ericsson (Publ) Communication scheduling
US10200925B2 (en) 2013-02-19 2019-02-05 Mimosa Networks, Inc. Systems and methods for directing mobile device connectivity
US9179336B2 (en) 2013-02-19 2015-11-03 Mimosa Networks, Inc. WiFi management interface for microwave radio and reset to factory defaults
US10425944B2 (en) 2013-02-19 2019-09-24 Mimosa Networks, Inc. WiFi management interface for microwave radio and reset to factory defaults
US9930592B2 (en) 2013-02-19 2018-03-27 Mimosa Networks, Inc. Systems and methods for directing mobile device connectivity
US9986565B2 (en) 2013-02-19 2018-05-29 Mimosa Networks, Inc. WiFi management interface for microwave radio and reset to factory defaults
US9130305B2 (en) 2013-03-06 2015-09-08 Mimosa Networks, Inc. Waterproof apparatus for cables and cable interfaces
US10096933B2 (en) 2013-03-06 2018-10-09 Mimosa Networks, Inc. Waterproof apparatus for cables and cable interfaces
US9362629B2 (en) 2013-03-06 2016-06-07 Mimosa Networks, Inc. Enclosure for radio, parabolic dish antenna, and side lobe shields
US10186786B2 (en) 2013-03-06 2019-01-22 Mimosa Networks, Inc. Enclosure for radio, parabolic dish antenna, and side lobe shields
US9531114B2 (en) 2013-03-06 2016-12-27 Mimosa Networks, Inc. Waterproof apparatus for cables and cable interfaces
US9871302B2 (en) 2013-03-06 2018-01-16 Mimosa Networks, Inc. Enclosure for radio, parabolic dish antenna, and side lobe shields
US9949147B2 (en) 2013-03-08 2018-04-17 Mimosa Networks, Inc. System and method for dual-band backhaul radio
US10257722B2 (en) 2013-03-08 2019-04-09 Mimosa Networks, Inc. System and method for dual-band backhaul radio
US9843940B2 (en) 2013-03-08 2017-12-12 Mimosa Networks, Inc. System and method for dual-band backhaul radio
US9191081B2 (en) 2013-03-08 2015-11-17 Mimosa Networks, Inc. System and method for dual-band backhaul radio
US10117114B2 (en) 2013-03-08 2018-10-30 Mimosa Networks, Inc. System and method for dual-band backhaul radio
US9693388B2 (en) 2013-05-30 2017-06-27 Mimosa Networks, Inc. Wireless access points providing hybrid 802.11 and scheduled priority access communications
US9295103B2 (en) 2013-05-30 2016-03-22 Mimosa Networks, Inc. Wireless access points providing hybrid 802.11 and scheduled priority access communications
US9161387B2 (en) 2013-05-30 2015-10-13 Mimosa Networks, Inc. Wireless access points providing hybrid 802.11 and scheduled priority access communications
US9001689B1 (en) * 2014-01-24 2015-04-07 Mimosa Networks, Inc. Channel optimization in half duplex communications systems
US9888485B2 (en) 2014-01-24 2018-02-06 Mimosa Networks, Inc. Channel optimization in half duplex communications systems
US9504049B2 (en) 2014-01-24 2016-11-22 Mimosa Networks, Inc. Channel optimization in half duplex communications systems
US10090943B2 (en) 2014-03-05 2018-10-02 Mimosa Networks, Inc. System and method for aligning a radio using an automated audio guide
US9780892B2 (en) 2014-03-05 2017-10-03 Mimosa Networks, Inc. System and method for aligning a radio using an automated audio guide
US9998246B2 (en) 2014-03-13 2018-06-12 Mimosa Networks, Inc. Simultaneous transmission on shared channel
US10447417B2 (en) 2014-03-13 2019-10-15 Mimosa Networks, Inc. Synchronized transmission on shared channel
USD752566S1 (en) 2014-09-12 2016-03-29 Mimosa Networks, Inc. Wireless repeater
US10098018B2 (en) 2015-06-25 2018-10-09 Airspan Networks Inc. Configurable antenna and method of operating such a configurable antenna
US10231139B2 (en) 2015-06-25 2019-03-12 Airspan Networks Inc. Node role assignment in networks
US10257733B2 (en) 2015-06-25 2019-04-09 Airspan Networks Inc. Managing external interference in a wireless network
US10306485B2 (en) 2015-06-25 2019-05-28 Airspan Networks Inc. Configurable antenna and method of operating such a configurable antenna
US10070325B2 (en) 2015-06-25 2018-09-04 Airspan Networks Inc. Sub-sampling antenna elements

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