Method and system for processing global navigation satellite system signals
By selectively blanking the GNSS receiver in the FDD wireless communication link, the multi-frequency tone interference problem of the uplink signal on the GNSS receiver is solved, and the positioning accuracy and position estimation accuracy of the GNSS receiver are improved.
Patent Information
- Application Number
- CN202111407638.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2016-12-07
- Filing Date
- 2016-12-15
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2036-12-15
AI Technical Summary
In FDD wireless communication links, the GNSS receiver of a mobile device is affected by the multi-tone jamming effect in the uplink signal, resulting in false detection and affecting the positioning accuracy.
By selectively blanking the GNSS receiver on the mobile device, the transmission interference of specific content in the uplink signal (such as DMRS or SRS symbols) is reduced or eliminated. The modem device is used to enable or disable the blanking function in specific frequency bands of the uplink signal and control the signal synchronization with the blanking terminal of the GNSS receiver.
The multi-tone interference at the GNSS receiver is effectively reduced or eliminated, thereby improving the positioning accuracy of the GNSS receiver and the accuracy of position estimation.
Smart Images

Figure CN114137578B_ABST
Abstract
Description
[0001] This application is a divisional application of Chinese invention patent application 201680071238.0 (PCT / US2016 / 067061), filed on December 15, 2016, and entitled “Method and System for Processing Global Navigation Satellite System Signals”. Technical Field
[0002]
[0046] Embodiments described herein are directed to obtaining measurements of signals acquired from mobile transmitters. Background Art
[0003] Satellite positioning systems (SPS), such as the Global Positioning System (GPS), have enabled navigation services for mobile handsets in outdoor environments. Mobile handsets may have navigation receivers capable of acquiring signals transmitted by the SPS to obtain a position fix. Unfortunately, in some cases, noise and interference at the navigation receiver (e.g., from local jamming signals) may introduce false detections that result in erroneous position estimates. Summary of the Invention
[0004] Briefly, one particular implementation is directed to a method at a mobile device comprising: transmitting an uplink signal in a wireless communication link; and selectively blanking a satellite positioning system (SPS) receiver synchronized to a portion of content in the transmitted uplink signal.
[0005] Another specific embodiment is directed to a mobile device comprising: a satellite positioning system (SPS) receiver for acquiring SPS signals; and a modem device for: encoding content for transmission in an uplink signal in a wireless communication link; and generating a signal to blank the SPS receiver in synchronization with a portion of the content.
[0006] Another particular implementation is directed to a mobile device comprising: means for transmitting an uplink signal in a wireless communication link; and means for selectively blanking a satellite positioning system (SPS) receiver synchronized with a portion of content in the transmitted uplink signal.
[0007] Another specific embodiment is directed to a storage medium comprising computer-readable instructions stored thereon, the computer-readable instructions being executable by one or more processors of a mobile device to: encode content for transmission in an uplink signal in a frequency division duplex (FDD) wireless communication link; and generate a signal to blank an SPS receiver synchronized with a portion of the content.
[0008] In another specific embodiment, a method at a communication device includes: encoding an application content signal for transmission over a wireless transmission medium to provide symbol content, the symbol content comprising first symbols representing portions of the application content signal; up-converting the symbol content into a radio frequency signal for transmission over the wireless transmission medium; and selectively blanking a receiver synchronized with at least a portion of the symbol content. In a specific embodiment, the symbol content further comprises a second symbol interleaved with the first symbol to control a communication channel over the wireless transmission medium. In another specific embodiment, selectively blanking the receiver further comprises generating a blanking signal synchronized with at least a portion of the second symbol. In another specific embodiment, the second symbol comprises a DMRS or SRS symbol. In another specific embodiment, the symbol content is up-converted for transmission over an FDD wireless communication link. In another specific embodiment, the symbol content is up-converted for transmission over a WLAN communication link, a WPAN communication link, or a combination thereof.
[0009] In another specific embodiment, a communication device includes: a receiver for receiving a radio frequency signal; a modem device for: encoding an application content signal for transmission in a wireless transmission medium to provide symbol content, the symbol content including a first symbol representing several portions of the application content signal; and generating a signal to selectively blank the receiver in synchronization with at least a portion of the symbol content.
[0010] In another specific embodiment, a storage medium includes computer-readable instructions stored thereon, the computer-readable instructions being executable by a processor of a communication device to: encode an application content signal for transmission in a wireless transmission medium to provide symbol content, the symbol content including a first symbol representing portions of the application content signal; and generate a signal to selectively blank a receiver synchronized with at least a portion of the symbol content.
[0011] In another embodiment, as described above, a communication device includes: a device for encoding an application content signal for transmission in a wireless transmission medium to provide symbol content, the symbol content including first symbols representing several portions of the application content signal; a device for up-converting the symbol content into a radio frequency signal for transmission in the wireless transmission medium; and a device for selectively blanking a receiver synchronized with at least a portion of the symbol content.
[0012] It should be understood that the foregoing implementations are merely example implementations, and that claimed subject matter is not necessarily limited to any particular aspect of these example implementations. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The subject matter claimed is particularly pointed out and distinctly claimed in the concluding portion of the specification. However, as to the organization and / or method of operation, and objects, features and / or advantages thereof, reference may be made to the appended claims. Figure 1 The following detailed description is best understood when read with reference to the accompanying drawings:
[0014] Figure 1 is a system diagram illustrating certain features of a system including a mobile device according to one embodiment;
[0015] Figure 2 and 3 describing features of a portion of an uplink signal according to certain embodiments;
[0016] Figure 4 is a timing diagram of a blanking signal according to an embodiment;
[0017] Figure 5 illustrates changes in the spectrum of a signal received at a GNSS receiver using blanking according to certain embodiments;
[0018] Figure 6 is a schematic block diagram illustrating an exemplary apparatus according to an embodiment;
[0019] Figure 7A and 7B is a flow chart of a process according to an embodiment; and
[0020] Figure 8 is a schematic block diagram of an example computing system according to an implementation.
[0021] In the following detailed description, reference is made to the accompanying drawings forming part thereof, wherein the same reference numerals may indicate the same parts throughout corresponding and / or similar parts. It will be understood that the figures are not necessarily drawn to scale, for example, for the sake of simplicity and / or clarity of illustration. For example, the dimensions of some aspects may be exaggerated relative to the dimensions of other aspects. In addition, it should be understood that other embodiments may be utilized. In addition, structural and / or other changes may be made without departing from the claimed subject matter. Throughout this specification, references to "claimed subject matter" refer to the subject matter that is intended to be covered by one or more claims or any part thereof, and do not necessarily refer to a complete set of claims, a specific combination of claim groups (e.g., method claims, apparatus claims, etc.), or a specific claim. It should also be noted that directions and / or references such as upward, downward, top, bottom, etc. may be used to facilitate the discussion of the figures and are not intended to limit the application of the claimed subject matter. Therefore, the following detailed description should not be understood to limit the claimed subject matter and / or equivalents. DETAILED DESCRIPTION
[0022] References throughout this specification to an embodiment, an embodiment, an example, an embodiment, and / or the like mean that a particular feature, structure, characteristic, and / or the like described with respect to that particular embodiment and / or example is included in at least one embodiment and / or example of the claimed subject matter. Thus, for example, the appearance of such phrases in various places throughout this specification is not necessarily intended to refer to the same embodiment and / or example or any one particular embodiment and / or example. Furthermore, it should be understood that the particular features, structures, characteristics, and / or the like described can be combined in various ways in one or more embodiments and / or examples and thus fall within the scope of the claims. Of course, generally speaking, as is always the case with the specification of a patent application, these and other issues may vary in the specific context of use. In other words, throughout the patent application, the specific contexts of description and / or use provide useful guidance regarding reasonable inferences to be drawn; however, likewise, "in this context" generally refers to the context of this patent application without further qualification.
[0023] Wireless communication systems have evolved through generations, including first generation analog wireless telephone service (1G), second generation (2G) digital wireless telephone service (including temporary 2.5G networks), and third generation (3G) and fourth generation (4G) high-speed data / Internet-capable wireless service.
[0024] In recent years, Long Term Evolution (LTE) has been developed by the 3rd Generation Partnership Project (3GPP) as a radio access network technology for wireless communication of high-speed data and packetized voice for mobile phones and other mobile terminals. LTE has evolved from the Global System for Mobile Communications (GSM) and from GSM derivatives such as Enhanced Data Rates for GSM Evolution (EDGE), Universal Mobile Telecommunications System (UMTS), and High Speed Packet Access (HSPA).
[0025] Uplink carrier aggregation (ULCA) is a specific technique used to improve upload speeds for LTE-capable mobile devices, which may include increasing modulation complexity and throughput from 16-QAM to 64-QAM. However, these improved uplink bandwidth figures cannot be reliably achieved in areas with poor coverage. In certain implementations of LTE-capable mobile devices, using frequency division duplexing (FDD) to communicate with base stations in wireless communication links may allow for greater coverage.
[0026] An LTE-capable mobile device may include a navigation receiver, such as one capable of acquiring signals transmitted by spacecraft (SVs) in a global navigation satellite system (GNSS). Unfortunately, uplink signals transmitted by an LTE-capable mobile device in an FDD link can cause a multi-tone jamming effect on the mobile device's GNSS receiver. Specifically, the transmission of certain content in the uplink portion of an FDD wireless communication link can cause spectral components that interfere with the GNSS receiver's receive band, leading to false detections at the GNSS receiver. For example, the transmission of certain content in the uplink, such as demodulation reference signal (DMRS) symbols or sounding reference signal (SRS) symbols, can impart a multi-tone jamming effect to a GNSS receiver. As described below, this multi-tone jamming effect can be imparted to tones that are evenly spaced in frequency.
[0027] According to one embodiment, a GNSS receiver on a mobile device may be selectively blanked in synchronization with a portion of the content in an uplink signal being transmitted by the mobile device. Selectively blanking the GNSS receiver during the transmission of specific content in the uplink signal may enable the use of the GNSS receiver concurrently with the transmission of the uplink signal while reducing or eliminating the interference artifacts from the transmission of certain content in the uplink signal, such as SRS symbols or DMRS symbols.
[0028] Figure 1 1 is a system diagram illustrating certain features of a system including a mobile device (MD) 100 according to an embodiment. MD 100 may receive or acquire satellite positioning system (SPS) signals 159 from SPS satellites 160. In some embodiments, SPS satellites 160, including transmitters, may be from a global navigation satellite system (GNSS), such as the GPS or Galileo satellite systems. In other embodiments, the SPS satellites may be from multiple GNSSs, such as, but not limited to, GPS, Galileo, Glonass, or BeiDou (Compass) satellite systems. In other embodiments, the SPS satellites may be from any one of several regional navigation satellite systems (RNSSs), such as WAAS, EGNOS, QZSS, to name a few.
[0029] In addition, MD 100 can transmit and / or receive radio signals to and from a wireless communication network. In one example, MD 100 can communicate with a cellular communication network by transmitting and / or receiving radio signals to and from base transceiver station 110 via wireless communication link 123. Similarly, MD 100 can transmit and / or receive radio signals to and from local transceiver 115 via wireless communication link 125.
[0030] In certain embodiments, local transceiver 115 can be configured to communicate with MD 100 via wireless communication link 123 at a distance shorter than the distance achieved by base transceiver 110 via wireless communication link 123. For example, local transceiver 115 can be located in an indoor environment. Local transceiver 115 can provide access to a wireless local area network (WLAN, such as an IEEE Standard 802.11 network) or a wireless personal area network (WPAN, such as a Bluetooth network). In another example embodiment, local transceiver 115 can include a femtocell transceiver capable of facilitating communication over link 125 according to a cellular communication protocol. However, it should be understood that these are merely examples of networks that can communicate with an MD via a wireless link, and / or that claimed subject matter is not limited in this respect.
[0031] In certain embodiments, base transceiver station 110 and / or local transceiver 115 can communicate with servers 140, 150, and / or 155 via network 130 via link 145. Here, network 130 can include any combination of wired and / or wireless links. In certain embodiments, network 130 can include an Internet Protocol (IP) infrastructure that facilitates communication between MD 100 and servers 140, 150, or 155 via local transceiver 115 or base transceiver station 110. In another embodiment, network 130 can include cellular communication network infrastructure, such as a base station controller or a primary switching center, to facilitate mobile cellular communications with MD 100.
[0032] In certain embodiments, and / or as discussed below, MD 100 may have circuitry and / or processing resources capable of calculating a position fix and / or an estimated position for MD 100. For example, MD 100 may calculate a position fix based at least in part on pseudorange measurements to four or more SPS satellites 160. Here, MD 100 may calculate the pseudorange measurements based at least in part on pseudonoise code phase detection in signals 159 acquired from four or more SPS satellites 160. In certain embodiments, MD 100 may receive positioning assistance data from server 140, 150, or 155 to assist in acquiring signals 159 transmitted by SPS satellites 160, including, for example, almanac, ephemeris data, and Doppler search windows, to name a few examples.
[0033] As discussed above, in certain embodiments, MD 100 may communicate with base transceiver station 110 via an LTE-capable FDD wireless communication link. Thus, when attempting to acquire SPS signal 159 to perform positioning operations, the uplink portion of wireless communication link 123 may impart a multi-tone jamming signal to the SPS receiver at MD 100. In certain implementations, MD 100 may blank the SPS receiver synchronously with what is being transmitted on the uplink portion of wireless communication link 123 to avoid or mitigate the effects of multi-tone jamming.
[0034] Figure 2 The following describes an embodiment of transmitting specific content in an uplink signal of an FDD wireless communication link. Here, the signal transmission is divided into a number of "time slots," during which a series of discrete symbols may be transmitted. In the fourth symbol period of time slots 0 and 1, a demodulation reference symbol (DMRS) pilot symbol is transmitted, and in the first through third and fifth through seventh symbols of time slots 0 and 1, a physical uplink shared channel (PUSCH) symbol is transmitted. Figure 3 The following illustrates the transmission of specific content in another scenario where DMRS pilot symbols are similarly transmitted in the fourth symbol period (shown as PUSCH RS) of time slots 0 and 1. As shown, additional content can be transmitted in the first two and last two subcarrier frequency bands. As noted above according to one embodiment, the transmitter transmits Figure 2 and 3 The DMRS symbols transmitted in time slots 0 and 1 of an FDD uplink of a 400MHz band may impart a multi-tone jammer signal at an SPS receiver co-located with a transmitter (e.g., in a mobile phone). In one example scenario, the multi-tone jammer may comprise a single tone at a particular frequency repeated at a spacing that is an integer multiple of a particular harmonic frequency (e.g., 1.0 kHz). It should be understood, however, that 1.0 kHz is merely an example of a particular harmonic spacing of the tones in the multi-tone jammer signal, and the claimed subject matter is not limited in this respect. As discussed above, the SPS receiver may be blanked during the transmission of the DMRS symbols to reduce or eliminate spectral interference that produces falsely detected jammer signals at the SPS receiver.
[0035] In a specific implementation, a mobile device transmitting an FDD uplink signal may have a transceiver device and / or a modem device to transmit on the uplink signal and process the downlink signal. According to one embodiment, the transceiver device and / or the modem device may generate a blanking signal to be applied to the terminals of the SPS receiver at the same location to control the blanking of the SPS receiver during certain parts of the transmission of the FDD uplink. For example, the blanking signal may be synchronized with the transmission of specific content on the FDD uplink that may introduce the aforementioned multi-tone jamming effect. Figure 4 As shown in , in certain embodiments, a transceiver device and / or a modem device may generate a blanking signal synchronized with the transmission of specific content (e.g., DMRS symbols and / or SRS symbols) in an FDD uplink. The blanking signal may be applied to terminals of an SPS receiver device to blank reception of the signal during the transmission of content that introduces multi-tone jammers.
[0036] According to one embodiment, a GNSS receiver (e.g. Figure 4 Band-dependent blanking (described in
[15] ) can be configured to enable / disable individual FDD-LTE bands for non-ULCA and ULCA scenarios, respectively. For example, for LTE B2 non-ULCA scenarios, LTE B2 can be configured to be non-blanked because the B2 LTE band itself may not interfere with or jam a GNSS receiver. In a B2 / B4 ULCA scenario, LTE B2 can be configured to be blanked because the B4 LTE band may interfere with or jam a GNSS receiver. And in a B2 / B13 ULCA scenario, LTE B2 can be configured to be non-blanked because the B13 band may not interfere with or jam a GNSS receiver. However, it should be understood that these are merely examples of how frequency bands in an FDD uplink can be independently blanked, and claimed subject matter is not limited in this respect. Blanking in individual bands for both non-ULCA and ULCA cases may be controlled independently according to a lookup table (eg, for B2, different lookup table entries for non-ULCA (single Tx), B2 / B4 ULCA, B2 / B13 ULCA, etc.).
[0037] According to one embodiment, blanking can be configured to be enabled in specific FDD-LTE bands among multiple frequency bands in the uplink signal. In one embodiment, modem software or firmware can control the assertion of a signal to a blanking terminal of the GNSS receiver with a specific lead time (e.g., 2.0 μsec) before the transmission of a DMRS or SRS symbol from the LTE transmit antenna begins. In another embodiment, modem software or hardware can assert the blanking terminal to indicate non-blanking 2.0 μsec after the transmission of the DMRS or SRS symbol. However, it should be understood that these are merely examples of how a receiver can be controlled to blank in response to specific content symbols, and claimed subject matter is not limited in this respect.
[0038] Figure 5 This figure illustrates the spectrum of a multi-tone interference signal generated at a GNSS receiver by transmissions in the uplink portion of an FDD wireless communication link without blanking certain content (e.g., SRS or DMRS symbols). Without blanking, energy peaks 500 extending above 119.5 dB can cause false detections at the SPS receiver. Selective blanking at the SPS receiver, synchronized with specific content transmitted in the FDD uplink, can substantially eliminate energy peaks 500.
[0039] Figure 6 FIG2 is a schematic block diagram of a system for transmitting symbols in a wireless transmission medium via radio frequency (RF) circuitry 614 and processing the signals at an SPS receiver 612 (e.g., on the same handset) in close proximity to the R / F circuitry 614, according to one embodiment. In a particular embodiment, the modem 600 may process application content 602 for transmission in an uplink signal at the radio frequency (RF) circuitry 614. The modem 600 may also provide control signals 610 to the SPS receiver 612 to selectively blank reception of signals received at the GNSS receiver 612 to mitigate interference artifacts from the transmission of content at the R / F circuitry 614. The modem 600 may include a combination of hardware circuitry and firmware (e.g., for execution on a microprocessor or digital signal processor) to implement actions or to process the application content 602 for transmission by the R / F circuitry 614 and to generate the control signals 610.
[0040] According to one embodiment, application content 602 may include digital content, such as text from a text message, sampled audio / voice signals, digital images (e.g., video or still images), Internet Protocol packets, to name a few. Application content 602 may be stored in digital form (e.g., as bits representing ones and zeros) in a memory or buffer. While application content 603 may further exist in a specific encoded format (e.g., ASCII encoded text, vocoder or other audio encoded symbols, MPEG or JPEG encoded symbols), block 603 in modem 600 may provide certain application content encoding to process application content 60 for transmission over a wireless transmission medium. In other embodiments, one or more actions described as being performed at block 603 may be performed in an application processor without departing from claimed subject matter.
[0041] Block 604 may further prepare the encoded application content for transmission in a wireless transmission medium (e.g., an LTE FDD uplink channel). Figure 2 and 3 As illustrated in FIG, block 604 may allocate the transmission of encoded symbols containing application content to spread out the transmission time slots (e.g., as PUSCH symbols) and to interleave additional channel-specific symbols (including, for example, DMRS and SRS symbols). However, it should be understood that this is merely an example of how application content may be further processed for transmission in a wireless communication channel, and claimed subject matter is not limited in this respect.
[0042] The encoded content produced by block 604 may be further baseband processed at block 606, for example, by further encoding the symbol content for upconversion at R / F circuitry 614. For example, block 606 may further encode the symbol content for QPSK, CDMA, or QAM processing to produce a baseband signal. The R / F circuitry 614 may then upconvert the baseband signal to an R / F signal for transmission in a wireless communication medium (e.g., a signal in an LTE FDD uplink) using circuitry that performs, for example, digital-to-analog conversion, modulation, RF upconversion, and power amplification.
[0043] According to one embodiment, block 604 may generate a signal comprising a sequence of symbols in digital form (e.g., expressed as a sequence of ones and zeros). Figure 2 and 3In the specific instance of the channel coded content shown in , this symbol sequence may include coded content symbols interleaved with channel specific symbols such as DMRS or SRS symbols. According to one embodiment, block 608 may analyze the channel coded content generated at block 604 to generate a control signal 610 to determine the time and / or duration at which the SPS receiver 612 will blank. For example, block 604 may analyze a specific symbol pattern, such as analyzing a specific symbol or bit sequence assigned to a specific time slot for transmission in an uplink channel. In one embodiment, block 604 may insert / interleave DMRS and / or SRS symbols. Block 608 may detect the timing of the DMRS and / or SRS symbols and predict / determine the timing of transmitting the DMRS and / or SRS symbols through an antenna connected to the R / F circuit 614. The control signal 610 may implement such Figure 4 The blanking signal shown is used to blank the SPS receiver 612 during the transmission of SRS and / or DMRS symbols by the R / F circuit 614. In certain embodiments, the control signal 610 may include a voltage applied to a device pin, such as Figure 4 As shown. In an alternative embodiment, the control signal can be asserted as a toggle for signaling the start of a blanking period followed by the start of a non-blanking period. In another embodiment, the control signal 610 can provide a digital signal on a high-speed bus. However, it should be understood that these are merely examples of how the control signal 610 can be implemented to achieve blanking of the SPS receiver 612, and claimed subject matter is not limited in this respect.
[0044] Figure 7A and 7B is a flow chart of a process for blanking a receiver in a manner synchronized with the content of the signal being transmitted. Figure 7A and 7B The action performed at the location may be performed by, for example, a mobile device (e.g. Figure 8 However, it should be understood that these are only the mobile devices 1100 that can be configured to perform Figure 7A and 7B, and the claimed subject matter is not limited in this respect. At block 702, an uplink signal may be transmitted in a wireless communication link. In one specific embodiment, block 702 may transmit the uplink signal in an FDD wireless communication link (e.g., an LTE FDD uplink). In another specific embodiment, block 702 may transmit the uplink signal in a wireless local area network (WLAN) communication link or a wireless personal area network (WPAN) communication link, or a combination thereof. In this context, an "uplink signal" as referred to herein refers to a signal transmitted to a device in a wireless communication medium to enable access to a wireless communication service. For example, a mobile user device may transmit a message to a base station in an LTE network in an uplink signal. However, it should be understood that these are merely examples of uplink signals, and the claimed subject matter is not limited in this respect. In this context, an "FDD wireless communication link," as referred to herein, refers to a wireless communication link in a format established to permit message transmission between a first and a second device such that messages transmitted from the first device to the second device are transmitted in a first portion of a wireless spectrum, and messages transmitted from the second device to the first device are transmitted in a second portion of the wireless spectrum that does not overlap in frequency with the first portion of the wireless spectrum. In one example embodiment, an uplink signal in the FDD wireless communication link transmits messages from a mobile user device to a base station in a spectrum that does not overlap with a spectrum used to transmit messages from a base station to a mobile user device in a downlink signal. However, it should be understood that this is merely an example of an FDD wireless communication link, and claimed subject matter is not limited in this respect.
[0045] Block 704 includes selectively blanking an SPS receiver that is time-synchronized with a portion of the content transmitted in the uplink at block 702. In this context, an "SPS receiver," as referred to herein, refers to a receiving device capable of processing at least a portion of a received signal transmitted by an SPS transmitter (e.g., SPS signal 159 transmitted by SPS satellite 160) to obtain information (e.g., code phase detection, carrier phase detection, system time, etc.). Furthermore, in this context, "content," as referred to herein, refers to a representation of a signal that is stored or transmitted independently of any specific format for transmission at a specific frequency or in a specific physical transmission medium or storage medium. It should be understood that content is not necessarily limited to application content. For example, content may include encoded application content in combination with channel-specific symbols, including, for example, DMRS and SRS symbols interleaved with application content symbols (e.g., expressed as a series of ones and zeros for transmission in a time slot). In this context, as referred to herein, "blanking" of a receiver refers to suspending reception of one or more signals at the receiver device for a duration. In one example, receiver blanking can include suspending an electrical connection to the receiver device for a duration such that reception of one or more signals is suspended during the blanking period. In a specific embodiment, the SPS receiver may blank for 72.0 μsec, covering the period during which the DMRS symbol is transmitted, and then proceed to normal SPS receiver operation for a subsequent 428.0 μsec without blanking. Furthermore, in this context, "selective blanking," as referred to herein, refers to the process of controlling a receiving device in such a manner as to suspend processing of a received signal. For example, a receiving device can be selectively blanked by, for example, disconnecting a receiving circuit from a received signal, removing power from at least a portion of the receiving device, or attenuating / grounding the received signal, to name a few examples. In one embodiment, the receiver device can be blanked in response to applying a voltage signal (e.g., control signal 610) to an input terminal of a switch to electrically disconnect the receiver device during the blanking period. In another embodiment, blacking the receiver can include forcing digital processing circuitry (e.g., analog-to-digital conversion circuitry) in the receiver to provide 0.0V as an output signal during the blanking period. However, it should be understood that this is merely an example of how a receiver device may be blanked and claimed subject matter is not limited in this respect.
[0046] Also in this context, blanking of a receiver "synchronized with a portion of the content" as referred to herein means that reception is blanked during moments and / or periods that are synchronized with features of the content being transmitted. Figure 6, the SPS receiver 612 can be selectively blanked based at least in part on the timing of the DMRS or SRS symbols detected in the symbol content generated at block 604. For example, the SPS receiver 612 can be selectively blanked during intervals in which a DMRS or SRS signal is to be transmitted via an antenna connected to the R / F circuit 614. In one example, as noted above, the control signal 610 can include providing a blanking signal to the SPS receiver 612 with an advance period (e.g., 2.0 μsec) prior to transmitting specific content (e.g., DMRS or SRS symbols or other content that imparts an artificial interference effect) via the R / F circuit 614. However, it should be understood that this is merely an example of how the blanking of the receiver can be synchronized with the content transmitted in the uplink signal, and claimed subject matter is not limited in this respect.
[0047] In certain embodiments, block 704 may include selectively blanking based at least in part on a particular channel or frequency band of the uplink signal. For example, block 704 may blank the SPS receiver from uplink transmission for ULCA LTE B2 / B4, but not for LTE B2 non-ULCA. Furthermore, block 704 may include selectively blanking based on the transmit power applied by the transmitter to transmit the uplink signal at block 702. Furthermore, for a multi-band SPS receiver (e.g., capable of processing any combination of GPS, GLONASS, BeiDou, or Galileo signals), block 704 may selectively blank some SPS frequency bands while not blanking others.
[0048] Figure 7B is a flow chart of a process according to an alternative embodiment. Block 706 includes encoding an application content signal for transmission in a wireless communication medium to provide symbolic content. In this context, an "application content signal" as referred to herein means an expression or representation of the content of an application (e.g., text, audio signal, image signal, etc.) that supports a particular format. "Symbolic content" as referred to herein includes discrete encoded expressions in a particular format that, if properly combined according to the format, represent all or part of the content to be transmitted in the wireless transmission medium. In the above-discussed Figure 6 In the example of , the symbol content may include a sequence of symbols, as generated by block 604, which may include encoded symbols representing application content interleaved with channel control symbols. Thus, it should be appreciated that in this particular context, the symbol content is not necessarily limited to encoded symbols representing application content, but may also include channel control symbols, such as DMRS or SRS symbols. However, it should be understood that these are merely examples of symbol content, and claimed subject matter is not limited in this respect.
[0049] Block 708 may include up-converting the symbol content generated at block 706 to an R / F frequency for transmission over a wireless transmission medium. In this context, "up-converting," as referred to herein, means converting a signal to a specific format suitable for transmission over a transmission medium at a specific carrier frequency. For example, R / F circuit 614 may modulate a signal at a specific carrier frequency based on a baseband signal from block 606 (where the baseband signal is based at least in part on the symbol content generated by block 604). Block 710 then selectively blanks a receiver synchronized with a portion of the symbol content, as discussed above.
[0050] In one embodiment, Figure 8 The subject matter shown in may include features such as a computing device. It should also be noted that the term computing device generally refers to at least one or more processors and a memory connected by a communication bus. Likewise, at least in the context of the present disclosure, this should be understood to refer to sufficient structure within the meaning of 35 USC § 112(f) such that it is specifically intended that 35 USC § 112(f) not be implied by the use of the terms "computing device," "wireless station," "wireless transceiver device," and / or similar terms; however, if for some reason that is not immediately apparent it is determined that the foregoing understanding does not hold, and 35 USC § 112(f) must therefore be implied by the use of the terms "computing device," "wireless station," "wireless transceiver device," and / or similar terms, then it is intended that the corresponding structure, materials, and / or actions for performing one or more functions be understood and interpreted as at least in accordance with the statutory section. Figure 6 、 7A and 7B and the corresponding text of the present invention.
[0051] Figure 8 is a schematic diagram of a mobile device according to an embodiment. Mobile device 100 ( Figure 1 ) may include Figure 8 1100. In some embodiments, the mobile device 1100 may further include a wireless transceiver 1121 capable of transmitting and receiving wireless signals 1123 over a wireless communication network via a wireless antenna 1122. The wireless transceiver 1121 may be connected to the bus 1101 via a wireless transceiver bus interface 1120. In some embodiments, the wireless transceiver bus interface 1120 may be at least partially integrated with the wireless transceiver 1121. Some embodiments may include multiple wireless transceivers 1121 and wireless antennas 1122 to enable transmission and / or reception of signals in accordance with corresponding multiple wireless communication standards, such as several versions of IEEE Standard 802.11, CDMA, WCDMA, LTE, UMTS, GSM, AMPS, ZigBee, and Bluetooth, to name a few.
[0052] The mobile device 1100 may also include an SPS receiver 1155 capable of receiving and acquiring SPS signals 1159 via an SPS antenna 1158. The SPS receiver 1155 may also process the acquired SPS signals 1159 in whole or in part for use in estimating the position of the mobile device 1100. In some embodiments, the general-purpose processor 1111, the memory 1140, the DSP 1112, and / or a dedicated processor (not shown) may also be utilized to process the acquired SPS signals in whole or in part and / or in conjunction with the SPS receiver 1155 to calculate the estimated position of the mobile device 1100. Storage of SPS or other signals used to perform positioning operations may be performed in the memory 1140 or in registers (not shown).
[0053] According to one embodiment, the SPS receiver 1155 may include a terminal or pin for receiving a blanking signal. For example, the SPS receiver 1155 may blank reception from time to time in response to the blanking signal. In a specific implementation, the wireless transceiver 1121 or the modem processor 1166 may be connected to the terminal or pin of the SPS receiver 1155 via a wired signal path (not shown) to assert the blanking signal on the terminal or pin in synchronization with the content transmitted by the wireless transceiver 1121 on the uplink portion of the FDD wireless communication link, as discussed above. For example, the wireless transceiver 1121 or the modem processor 1166 may have one or more features of the modem 600 to generate a control signal to blank reception at the SPS receiver 1155, as described above.
[0054] Figure 8Also shown in FIG1 , mobile device 1100 may include a digital signal processor (DSP) 1112 connected to bus 1101 via bus interface 1110, and a general-purpose processor 1111 connected to bus 1101 via bus interface 1110 and memory 1140. Bus interface 1110 may be integrated with DSP 1112, general-purpose processor 1111, and memory 1140. In various embodiments, functions may be performed in response to the execution of one or more machine-readable instructions stored in memory 1140, such as stored on a computer-readable storage medium, such as RAM, ROM, flash memory, or an optical drive, to name a few examples. The one or more instructions may be executed by general-purpose processor 1111, a special-purpose processor, or DSP 1112. Memory 1140 may include non-transitory processor-readable memory and / or computer-readable memory that stores software code (programming code, instructions, etc.) that is executable by processor 1111 and / or DSP 1112 to perform the functions described herein. In a particular embodiment, the wireless transceiver 1121 can communicate with the general processor 1111 and / or DSP 1112 via the bus 1101 to enable the mobile device 1100 to be configured as a wireless STA, as discussed above. The general processor 1111 and / or DSP 1112 can execute instructions to perform the above-mentioned combined Figure 6 、 7A and one or more aspects of the processes discussed in 7B.
[0055] Figure 8 As also shown, user interface 1135 may include any of a number of devices, such as a speaker, microphone, display device, vibration device, keyboard, touch screen, to name a few. In a particular embodiment, user interface 1135 enables a user to interact with one or more applications hosted on mobile device 1100. For example, the devices of user interface 1135 may store analog or digital signals on memory 1140 for further processing by DSP 1112 or general / application processor 1111 in response to actions from the user. Similarly, applications hosted on mobile device 1100 may store analog or digital signals on memory 1140 to present output signals to the user. In another embodiment, mobile device 1100 may optionally include dedicated audio input / output (I / O) devices 1170, including, for example, a dedicated speaker, microphone, digital / analog circuitry, analog / digital circuitry, amplifiers, and / or gain controls. However, it should be understood that this is merely one example of how audio I / O may be implemented in a mobile device, and claimed subject matter is not limited in this respect. In another embodiment, the mobile device 1100 may include a touch sensor 1162 that responds to touch or pressure on a keyboard or touch screen device.
[0056] The mobile device 1100 may also include a dedicated camera device 1164 for capturing still or moving images. The dedicated camera device 1164 may include, for example, an imaging sensor (e.g., a charge-coupled device or CMOS imager), a lens, analog / digital circuitry, and a frame buffer, to name a few examples. In one embodiment, additional processing, conditioning, encoding, or compression of signals representing captured images may be performed at the general / application processor 1111 or the DSP 1112. Alternatively, a dedicated video processor 1168 may perform conditioning, encoding, compression, or manipulation of signals representing captured images. Additionally, the dedicated video processor 1168 may decode / decompress stored image data for presentation on a display device (not shown) on the mobile device 1100.
[0057] Mobile device 1100 may also include sensors 1160 coupled to bus 1101. Sensors 1160 may include, for example, inertial sensors and environmental sensors. The inertial sensors of sensors 1160 may include, for example, an accelerometer (e.g., responsive to acceleration of mobile device 1100 in three dimensions), one or more gyroscopes, or one or more magnetometers (e.g., to support one or more compass applications). Environmental sensors of mobile device 1100 may include, for example, a temperature sensor, an air pressure sensor, an ambient light sensor, a camera imager, and a microphone, to name a few. Sensors 1160 may generate analog or digital signals that may be stored in memory 1140 and processed by a DPS or general / application processor 1111, which supports one or more applications, such as those for positioning or navigation operations.
[0058] In a particular embodiment, mobile device 1100 may include a dedicated modem processor 1166 capable of performing baseband processing on signals received and downconverted at wireless transceiver 1121. Similarly, dedicated modem processor 1166 may perform baseband processing on signals that are upconverted for transmission by wireless transceiver 1121. In an example embodiment, modem processor 1166 may have one or more features of modem 600 discussed above. In an alternative embodiment, instead of having a dedicated modem processor, baseband processing may be performed by a general-purpose processor or DSP (e.g., general / application processor 1111 or DSP 1112). However, it should be understood that these are merely examples of structures that may perform baseband processing, and claimed subject matter is not limited in this respect.
[0059] In one embodiment, as described above, a method at a communication device includes: encoding an application content signal for transmission over a wireless transmission medium to provide symbol content, the symbol content including first symbols representing portions of the application content signal; up-converting the symbol content into a radio frequency signal for transmission over the wireless transmission medium; and selectively blanking a receiver synchronized with at least a portion of the symbol content. In a specific embodiment, the symbol content further includes a second symbol interleaved with the first symbol to control a communication channel over the wireless transmission medium. In another specific embodiment, selectively blanking the receiver further includes generating a blanking signal synchronized with at least a portion of the second symbol. In another specific embodiment, the second symbol includes a DMRS or SRS symbol. In another specific embodiment, the symbol content is up-converted for transmission over an FDD wireless communication link. In another specific embodiment, the symbol content is up-converted for transmission over a WLAN communication link, a WPAN communication link, or a combination thereof.
[0060] In another embodiment, as described above, a communication device includes a receiver for receiving a radio frequency signal; a modem for encoding an application content signal for transmission over a wireless transmission medium to provide symbol content, the symbol content including first symbols representing portions of the application content signal; and a receiver for generating a signal to selectively blank the receiver in synchronization with at least a portion of the symbol content. In one specific embodiment, the communication device further includes radio frequency circuitry for upconverting the symbol content for transmission over the wireless transmission medium. In another specific embodiment, the symbol content further includes a second symbol interleaved with the first symbol to control a communication channel over the wireless transmission medium. In another specific embodiment, selectively blanking the receiver further includes generating a blanking signal in synchronization with at least a portion of the second symbol. In another specific embodiment, the second symbol includes a DMRS or SRS symbol. In another specific embodiment, the symbol content is upconverted for transmission over an FDD wireless communication link. In another specific embodiment, the symbol content is upconverted for transmission over a WLAN communication link, a WPAN communication link, or a combination thereof.
[0061] In another embodiment, as described above, a storage medium includes computer-readable instructions stored thereon, the computer-readable instructions executable by a processor of a communication device to: encode an application content signal for transmission over a wireless transmission medium to provide symbol content, the symbol content comprising first symbols representing portions of the application content signal; and generate a signal to selectively blank a receiver synchronized with at least a portion of the symbol content. In one specific embodiment, the symbol content further comprises a second symbol interleaved with the first symbol to control a communication channel in the wireless transmission medium. In another specific embodiment, selectively blanking the receiver further comprises generating a blanking signal synchronized with at least a portion of the second symbol. In another specific embodiment, the second symbol comprises a DMRS or SRS symbol. In another specific embodiment, the symbol content is frequency upconverted for transmission over an FDD wireless communication link. In another specific embodiment, the symbol content is frequency upconverted for transmission over a WLAN communication link, a WPAN communication link, or a combination thereof.
[0062] In another embodiment, as described above, a communication device includes: means for encoding an application content signal for transmission over a wireless transmission medium to provide symbol content, the symbol content including first symbols representing portions of the application content signal; means for up-converting the symbol content into a radio frequency signal for transmission over the wireless transmission medium; and means for selectively blanking a receiver synchronized with at least a portion of the symbol content. In one specific embodiment, the symbol content further includes a second symbol interleaved with the first symbol to control a communication channel over the wireless transmission medium. In another specific embodiment, selectively blanking the receiver further includes generating a blanking signal synchronized with at least a portion of the second symbol. In another specific embodiment, the second symbol includes a DMRS or SRS symbol. In another specific embodiment, the symbol content is up-converted for transmission over an FDD wireless communication link. In another specific embodiment, the symbol content is up-converted for transmission over a WLAN communication link, a WPAN communication link, or a combination thereof.
[0063] As used herein, the term "mobile device" refers to a device that can have a changing location from time to time. Changes in location fixes can include changes in direction, distance, orientation, etc., as a few examples. In specific examples, a mobile device can include a cellular telephone, a wireless communication device, user equipment, a laptop computer, other personal communication system (PCS) devices, a personal digital assistant (PDA), a personal audio device (PAD), a portable navigation device, or other portable communication devices. A mobile device can also include a processor and / or computing platform adapted to execute functions controlled by machine-readable instructions.
[0064] The methods described herein may be implemented by various means depending on the application according to the specific example. For example, the methods may be implemented in hardware, firmware, software, or a combination thereof. In a hardware implementation, for example, the processing unit may be implemented in one or more application specific integrated circuits ("ASICs"), digital signal processors ("DSPs"), digital signal processing devices ("DSPDs"), programmable logic devices ("PLDs"), field programmable gate arrays ("FPGAs"), processors, controllers, microcontrollers, microprocessors, electronic devices, other device units designed to perform the functions described herein, or a combination thereof.
[0065] Algorithmic descriptions and / or symbolic representations are examples of techniques that are used by those skilled in the art of signal processing and / or related fields to convey the substance of their work to other persons skilled in the art. An algorithm is herein and generally considered to be a self-consistent sequence of operations and / or similar signal processing that produces a desired result. In this context, operations and / or processing involve the physical manipulation of physical quantities. Typically, but not necessarily, these quantities may be in the form of electrical and / or magnetic signals and / or states that can be stored, transmitted, combined, compared, processed, or otherwise manipulated as electronic signals and / or states representing various forms of content (e.g., signal measurements, text, images, video, audio, etc.). Primarily for common reasons, it has proven convenient to refer to such physical signals and / or physical states as bits, bytes, values, elements, symbols, characters, terms, numbers, digits, expressions, messages, fields, identifier frames, measurements, content, and / or the like. However, it should be understood that all of these or similar terms should be associated with appropriate physical quantities and are merely convenient labels. Unless otherwise expressly stated, as is apparent from the foregoing discussion, it should be understood that throughout this specification, discussions utilizing terms such as "process," "calculate," "calculate," "determine," "establish," "obtain," "identify," "select," "generate," and / or the like may refer to actions and / or processing procedures of a specific device, such as a special-purpose computer and / or similar special-purpose computing and / or network device. Thus, in the context of this specification, a special-purpose computer and / or similar special-purpose computing and / or network device is capable of processing, manipulating, and / or transforming signals and / or states of physical electrical and / or magnetic quantities typically represented as memories, registers, and / or other storage devices, transmission devices, and / or display devices of the special-purpose computer and / or similar special-purpose computing and / or network device. In the context of this particular patent application, as mentioned, the term "specific device" may include a general-purpose computing and / or network device, such as a general-purpose computer (once it has been programmed to perform specific functions in accordance with instructions from program software).
[0066] In some cases, the operation of a memory device (e.g., a change of state from binary one to binary zero, or a change of state from binary zero to binary one) may include a transformation such as a physical transformation. In the case of certain types of memory devices, such physical transformations may include physically transforming an item to a different state or object. For example, but not limited to, for some types of memory devices, the change of state may involve accumulating and / or storing charge or releasing stored charge. Similarly, in other memory devices, the change of state may include a physical change, such as a transformation of magnetic orientation and / or physical changes and / or a transformation of molecular structure, such as from crystalline to amorphous or from amorphous to crystalline. In yet other memory devices, for example, the change of physical state may involve quantum mechanical phenomena, such as superpositions, kinks, and the like of quantum bits (qubits). The foregoing is not intended to be an exhaustive list of all instances in which a change of state in a memory device (from binary one to binary zero or from binary zero to binary one) may include transformations such as physical transformations. In fact, the foregoing is intended to be illustrative examples.
[0067] The wireless communication techniques described herein may be combined with various wireless communication networks, such as wireless wide area networks ("WWAN"), wireless local area networks ("WLAN"), wireless personal area networks (WPAN), etc. In this context, a "wireless communication network" includes multiple devices or nodes that can communicate with each other via one or more wireless communication links. Figure 1 and Figure 2As shown in FIG1 , for example, a wireless communication network may include two or more devices from mobile devices 100a, 100b, 115a, and 115b. The terms "network" and "system" are used interchangeably herein. A WWAN may be a code division multiple access ("CDMA") network, a time division multiple access ("TDMA") network, a frequency division multiple access ("FDMA") network, an orthogonal frequency division multiple access ("OFDMA") network, a single carrier frequency division multiple access ("SC-FDMA") network, or any combination thereof. A CDMA network may implement one or more radio access technologies ("RATs"), such as cdma2000, wideband CDMA ("W-CDMA"), to name a few radio technologies. Here, cdma2000 may include technologies implemented according to the IS-95, IS-2000, and IS-856 standards. A TDMA network may implement the Global System for Mobile Communications ("GSM"), the Digital Advanced Mobile Phone System ("D-AMPS"), or some other RAT. GSM and W-CDMA are described in documents from a consortium named "3rd Generation Partnership Project" (3GPP). cdma2000 is described in documents from a consortium named "3rd Generation Partnership Project 2" (3GPP2). 3GPP and 3GPP2 documents are publicly available. In one aspect, a 4G Long Term Evolution ("LTE") communication network may also be implemented in accordance with the claimed subject matter. For example, a WLAN may include an IEEE 802.11x network, and a WPAN may include a Bluetooth network, IEEE 802.15x. The wireless communication implementations described herein may also be used in conjunction with any combination of a WWAN, a WLAN, or a WPAN.
[0068] In another aspect, as previously mentioned, the wireless transmitter or access point may comprise a femtocell for extending cellular telephone service into a business or home. In this implementation, for example, one or more mobile devices may communicate with the femtocell via a code division multiple access ("CDMA") cellular communication protocol, and the femtocell may provide the mobile devices with access to a larger cellular telecommunications network via another broadband network, such as the Internet.
[0069] The techniques described herein can be used with an SPS comprising any one of several GNSSs and / or a combination of GNSSs. In addition, these techniques can be used with positioning systems utilizing ground-based transmitters acting as "pseudo-satellites" or a combination of SVs and these ground-based transmitters. Ground-based transmitters may, for example, include ground-based transmitters that broadcast PN codes or other ranging codes (e.g., similar to GPS or CDMA cellular signals). This transmitter may be assigned a unique PN code to permit identification by a remote receiver. Ground-based transmitters may, for example, be used to amplify SPSs in situations where SPS signals from orbiting SVs may not be available, such as in tunnels, mines, buildings, urban canyons, or other enclosed areas. Another embodiment of a pseudo-satellite is referred to as a radio beacon. The term "SV," as used herein, is intended to include ground-based transmitters that act as pseudo-satellites, equivalents of pseudo-satellites, and possibly others. As used herein, the terms "SPS signal" and / or "SV signal" are intended to include SPS-like signals from ground-based transmitters, and ground-based transmitters include ground-based transmitters that act as pseudo-satellites or equivalents of pseudo-satellites.
[0070] Likewise, in this context, the terms "coupled," "connected," and / or similar terms are generally used. It should be understood that these terms are not intended to be synonymous. In fact, "connected" is generally used to indicate that two or more components are in direct physical (including electrical) contact, for example; while "coupled" is generally used to mean that two or more components may be in direct physical (including electrical) contact; however, "coupled" is also generally used to mean that two or more components are not necessarily in direct contact, but are capable of cooperating and / or interacting. The term coupled is also generally understood to mean an indirect connection, for example, in the context in which it is appropriate.
[0071] As used herein, the terms "and," "or," "and / or," and / or similar terms include and are intended to have multiple meanings based, at least in part, on the specific context in which the terms are used. In general, "or," if used in connection with a list (e.g., A, B, or C), is intended to mean A, B, and C (used herein in an inclusive sense), as well as A, B, or C (used herein in an exclusive sense). Additionally, the terms "one or more" and / or similar terms are used to describe any feature, structure, and / or characteristic in the singular, and / or are also used to describe a plurality of features, structures, and / or characteristics and / or some other combination of features, structures, and / or characteristics. Likewise, the term "based on" and / or similar terms are understood not to convey an exclusive set of factors, but rather to allow for the existence of additional factors that need not be explicitly described. Of course, for all of the foregoing, the specific circumstances of the description and / or use provide helpful guidance regarding the inferences to be made. It should be noted that the following description provides only one or more illustrative examples, and claimed subject matter is not limited to the one or more examples; however, again, the description and / or use of a specific context provides helpful guidance regarding inferences to be made.
[0072] In this context, the term network device refers to any device capable of communicating via and / or as part of a network, and may include computing devices. Although network devices may be capable of sending and / or receiving signals (e.g., signal packets and / or frames), for example, via wired and / or wireless networks, they may also be capable of performing arithmetic and / or logical operations, processing and / or storing signals, for example, as physical memory states stored in memory, and / or in various embodiments, may operate, for example, as a server. As an example, a network device capable of operating as a server or otherwise may include a dedicated rack-mounted server, a desktop computer, a laptop computer, a set-top box, a tablet computer, a netbook, a smartphone, a wearable device, an integrated device combining two or more features of the aforementioned devices, the like, or any combination thereof. For example, signal packets and / or frames may be exchanged, for example, between a server and a client device and / or other types of network devices, including between wireless devices coupled via, for example, a wireless network. It should be noted that the terms server, server device, server computing device, server computing platform, and / or similar terms may be used interchangeably. Similarly, the terms client, client device, client computing device, client computing platform, and / or similar terms can also be used interchangeably. Although in some cases, for ease of description, these terms are used in the singular, for example, by reference to a "client device" or a "server device," the description is intended to encompass one or more client devices and / or one or more server devices, as appropriate. Similarly, reference to a "database" is understood to mean one or more databases and / or portions thereof, as appropriate.
[0073] It should be understood that for ease of description, a network device (also referred to as a networking device) may be embodied and / or described in terms of a computing device. However, it should be further understood that this description should in no way be interpreted as limiting the claimed subject matter to one embodiment, such as a computing device and / or a network device, and instead, may be embodied as a variety of devices or combinations thereof, including (for example) one or more illustrative examples. References throughout this specification to an embodiment, an embodiment, an embodiment, an embodiment, and / or the like mean that the specific features, structures, and / or characteristics described in conjunction with a particular embodiment and / or embodiment are included in at least one embodiment and / or embodiment of the claimed subject matter. Therefore, the appearance of such phrases (for example) in various places throughout this specification is not necessarily intended to refer to the same embodiment or any one of the specific embodiments described. Furthermore, it should be understood that, for example, the specific features, structures, and / or characteristics described can be combined in various ways in one or more embodiments and are therefore within the scope of the established claims. In general, of course, these and other issues vary with the context. Therefore, the specific context of description and / or use provides helpful guidance regarding the inferences to be made. While what is presently considered to be example features has been illustrated and described, it will be understood by those skilled in the art that various other modifications may be made and equivalents may be substituted without departing from the claimed subject matter. Additionally, many modifications may be made to adapt a particular situation to the teachings of the claimed subject matter without departing from the central concept described herein. It is intended, therefore, that the claimed subject matter not be limited to the specific examples disclosed, but that such claimed subject matter may also encompass all aspects coming within the scope of the appended claims and their equivalents.
Claims
1. A method performed at a communication device, comprising: encoding an application content signal for transmission in a wireless transmission medium to provide symbol content, the symbol content comprising first symbols representing portions of the application content signal and second symbols interleaved with the first symbols to control a communication channel in the wireless transmission medium, wherein the second symbols comprise demodulation reference signal (DMRS) or sounding reference signal (SRS) symbols; Up-converting the symbol content into a radio frequency signal for transmission in the wireless transmission medium; and A receiver is selectively blanked based on at least a portion of the symbol content.
2. The method of claim 1, wherein selectively blanking the receiver further comprises generating a blanking signal based on at least a portion of the second symbol.
3. The method of claim 1, wherein the symbol content is upconverted for transmission in an FDD wireless communication link.
4. The method of claim 1, wherein the symbol content is up-converted for transmission in a WLAN communication link or a WPAN communication link or a combination thereof.
5. A communication device comprising: a receiver for receiving radio frequency signals; as well as A modem device configured to: encoding an application content signal for transmission in a wireless transmission medium to provide symbol content, the symbol content comprising first symbols representing portions of the application content signal and second symbols interleaved with the first symbols to control a communication channel in the wireless transmission medium, wherein the second symbols comprise demodulation reference signal (DMRS) or sounding reference signal (SRS) symbols; as well as A signal is generated for selectively blanking the receiver based on at least a portion of the symbol content.
6. The communication device of claim 5, wherein selectively blanking the receiver further comprises generating a blanking signal based on at least a portion of the second symbol.
7. The communication device of claim 5, wherein the symbol content is up-converted for transmission in an FDD wireless communication link.
8. The communication device of claim 5, wherein the symbol content is up-converted for transmission in a WLAN communication link or a WPAN communication link or a combination thereof.
9. A communication device comprising: means for encoding an application content signal for transmission in a wireless transmission medium to provide symbol content, the symbol content comprising first symbols representing portions of the application content signal and second symbols interleaved with the first symbols to control a communication channel in the wireless transmission medium, wherein the second symbols comprise demodulation reference signal (DMRS) or sounding reference signal (SRS) symbols; means for up-converting the symbol content into a radio frequency signal for transmission in the wireless transmission medium; as well as Means for selectively blanking a receiver based on at least a portion of the symbol content.
10. The communication device of claim 9, wherein the means for selectively blanking the receiver further comprises means for generating a blanking signal based on at least a portion of the second symbol.
11. The communication device of claim 9, wherein the symbol content is upconverted for transmission in an FDD wireless communication link.
12. The communication device of claim 9, wherein the symbol content is up-converted for transmission in a WLAN communication link or a WPAN communication link or a combination thereof.
13. A storage medium comprising machine-readable instructions stored thereon, the machine-readable instructions being executable by a processor of a communication device to: encoding an application content signal for transmission in a wireless transmission medium to provide symbol content, the symbol content comprising first symbols representing portions of the application content signal and second symbols interleaved with the first symbols to control a communication channel in the wireless transmission medium, wherein the second symbols comprise demodulation reference signal (DMRS) or sounding reference signal (SRS) symbols; and A signal is generated for selectively blanking a receiver based on at least a portion of the symbol content.
14. The storage medium of claim 13, wherein selectively blanking the receiver further comprises generating a blanking signal based on at least a portion of the second symbol.
15. The storage medium of claim 13, wherein the symbol content is up-converted for transmission in an FDD wireless communication link.
16. The storage medium of claim 13, wherein the symbol content is up-converted for transmission in a WLAN communication link or a WPAN communication link or a combination thereof.
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