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The internal and external monitoring mechanism is a beneficial monitoring mode which is in line with the current national condition, the situation of the power grid, and the construction progress of the power spot market. However, the independence of third-party monitoring agencies cannot be completely guaranteed because of the incomplete management system of China’s electricity market at present. Therefore, the market is prone to power rent-seeking in which third-party monitoring agencies conspire with the market internal monitoring organization. Based on the evolutionary game theory, this study constructed a coordination game model between third-party monitoring agencies and the market internal monitoring organization, as well as an asymmetric coordination game model between the interest group composed of internal and external monitoring agencies and government regulatory authorities. By analyzing the evolutionarily stable strategy of each game participant, the study identified the underlying factors that affect the strategic choices made by internal and external monitoring agencies and government regulatory authorities and then put forward some reasonable suggestions for reducing the probability of third-party monitoring agencies colluding with internal monitoring organizations so that the efficiency of internal and external monitoring mechanisms can be improved.

Abstract-This paper aims to quantify the performance improvement due to the use of fixed relays in the uplink of a wireless cellular network. Consider an orthogonal frequency division multiplex (OFDM) based cellular network in which each cell consists of a base station, multiple mobile users, and a number of relays. The questions of which frequency tones each link should use, whether the mobile station should communicate directly to the base station or though a relay, and how much power should be allocated on each frequency tone, form a simultaneous routing, frequency planning, and power allocation problem. This paper presents a dual decomposition approach to this problem and illustrates that while the use of relays does not necessarily increase the total cell throughput, it significantly improves the minimum common rate achievable across all the mobile users. Thus, the main benefit for deploying relays is in the improvement in fairness, rather than the total throughput. I. INTRODUCTIONThe use of relays to improve the performance of wireless cellular systems has been a subject of intense research activities in recent years. Relays have been shown to be capable of improving the capacity, coverage, and reliability of wireless connections in various settings (e.g. [1]- [7]). However, the deployment of relays in a cellular network also introduces significant practical challenges. Not only does the use of relays increase deployment cost, the network planning and resource allocation problem in relay networks also becomes more complicated. This paper aims to quantify the performance improvement due to the use of relays from a system point of view by considering a resource allocation problem in the uplink of a wireless cellular network with fixed relay infrastructure. We consider an orthogonal frequency division multiple access (OFDMA) based system and dynamically optimize which frequency tones each mobile station (MS) and relay station (RS) should use, whether the MS should communicate directly to the base station (BS) or though a relay, and how much power should be used on each frequency tone. We use a dual decomposition technique and show that such a simultaneous routing, frequency planning, and power allocation problem can be solved efficiently. Further, by comparing with traditional networks while taking deployment cost and fairness across the users into account, we illustrate that the main benefit of relay deployment is in improving the minimum supportable data rate rather than the overall throughput.Resource allocation issues for wireless cellular networks with relays have been considered extensively in the literature.